decomposition chamber

Abstract

A decomposition chamber for an exhaust aftertreatment system includes an inlet pipe, a selective catalytic reduction (SCR) catalyst member, a mixing collector wall, a distribution cap, and a flow splitter. The inlet pipe is configured to receive exhaust gas. The mixing collector wall includes a mixing assembly flow hole. The distribution cap is coupled to the inlet pipe and is configured to receive exhaust gas from the inlet pipe. The flow splitter is coupled to the mixing collector wall. The flow splitter separates the distribution cap from the mixing assembly flow hole. The flow splitter includes a first flow splitter inlet hole configured to receive exhaust gas from the distribution cap. A flow splitter outlet hole is configured to provide exhaust gas to the mixing assembly flow hole.

Description

[0001] Cross-referencing of related patent applications

[0002] This application is a divisional application of the application filed on December 1, 2020, with application number 202080095473.8 and invention title "Decomposition Chamber".

[0003] This application claims the benefit of U.S. Provisional Application No. 62 / 942,470, filed December 2, 2019, the entire disclosure of which is incorporated herein by reference. Technical Field

[0004] This application generally relates to a disassembly chamber for an exhaust aftertreatment system for an internal combustion engine. Background Technology

[0005] For internal combustion engines, such as diesel engines, nitrogen oxides (NOx) compounds may be emitted in the exhaust. For example, it may be desirable to reduce NOx emissions to comply with environmental regulations. To reduce NOx emissions, reducing agents can be dispensed into the exhaust through a dosing system and within an aftertreatment system. Reducing agents help convert a portion of the exhaust into non-NOx emissions, such as nitrogen (N2), carbon dioxide (CO2), and water (H2O), thereby reducing NOx emissions.

[0006] Exhaust gases and reducing agents react within components of an aftertreatment system. These components are typically configured to achieve a specific conversion from exhaust gases to non-NOx emissions. However, this configuration often degrades the performance and efficiency of the aftertreatment system. For example, such a configuration can lead to increased back pressure on an internal combustion engine, potentially resulting in reduced engine efficiency. Summary of the Invention

[0007] In one embodiment, a decomposition chamber for an exhaust aftertreatment system includes an inlet pipe, a selective catalytic reduction (SCR) catalyst assembly, a mixing collector wall, a distribution cap, and a branch pipe. The inlet pipe is configured to receive exhaust gas. The mixing collector wall includes mixing assembly flow orifices. The distribution cap is coupled to the inlet pipe and configured to receive exhaust gas from the inlet pipe. The branch pipe is coupled to the mixing collector wall. The branch pipe separates the distribution cap from the mixing assembly flow orifices. The branch pipe includes a first branch pipe inlet orifice configured to receive exhaust gas from the distribution cap. A branch pipe outlet orifice is configured to supply exhaust gas to the mixing assembly flow orifices.

[0008] In some embodiments, the decomposition chamber further includes: a shell body; a conveying component shell wall coupled to the shell body; and an outer shell wall; wherein the SCR catalyst component is coupled to the conveying component shell wall; wherein the mixing collector wall is coupled to the shell body; and wherein the outer shell wall is coupled to the shell body.

[0009] In some embodiments, the conveying assembly housing wall further includes a conveying assembly inlet port; the mixing collector wall includes a mixing assembly inlet port coaxial with the conveying assembly inlet port; and the inlet pipe extends through the conveying assembly inlet port and provides exhaust through the mixing assembly inlet port.

[0010] In some embodiments, the decomposition chamber further includes a mixing component wall; wherein the mixing component wall is coupled to the mixing collector wall; wherein the diverter further includes a diverter body, the diverter body including: a first end coupled to the mixing component wall, and a second end coupled to the mixing component wall; and wherein the first diverter inlet extends through the diverter body and is disposed between the first end and the second end; and wherein the diverter outlet extends through the diverter body and is disposed between the first end and the second end.

[0011] In some embodiments, the decomposition chamber further includes an outer shell wall; wherein the first diversion pipe inlet hole is disposed between the mixing collector wall and the outer shell wall; and wherein the diversion pipe outlet hole is disposed between the mixing collector wall and the outer shell wall.

[0012] In some embodiments, the diverter pipe further includes more than one diverter pipe body perforation opposite to the diameter of the diverter pipe outlet hole.

[0013] In some embodiments, the mixing collector wall further includes a diverter coupling hole; and the diverter is disposed within the diverter coupling hole.

[0014] In some embodiments, the diverter further includes a second diverter inlet orifice configured to receive exhaust gas from the distribution cap; and the diverter outlet orifice is disposed between the first diverter inlet orifice and the second diverter inlet orifice.

[0015] In some embodiments, the decomposition chamber further includes a mixing component wall; wherein the mixing component wall is coupled to the mixing collector wall; wherein the diverter further includes: a diverter body including a first end and a second end; a first diverter flange coupled to the first end and separated from the mixing component wall; and more than one first diverter flange through-hole extending through the first diverter flange; and wherein the diverter outlet hole is disposed between the first end and the first diverter inlet hole.

[0016] In some embodiments, the decomposition chamber further includes: an outer shell wall; a mixing component wall coupled to the mixing collector wall; wherein the diverter is separate from the outer shell wall and the mixing collector wall to allow exhaust gas to flow between the diverter and the outer shell wall and between the diverter and the mixing collector wall.

[0017] In another embodiment, a decomposition chamber for an exhaust aftertreatment system includes a selective catalytic reduction (SCR) catalyst component, a distribution cap, a mixing collector wall, and a splitter assembly. The distribution cap is configured to receive exhaust gas. The mixing collector wall includes a mixing component flow orifice. The splitter assembly extends between a first portion and a second portion of the mixing collector wall. The splitter assembly includes an inlet splitter and an outlet splitter. The inlet splitter has an inlet splitter inlet orifice configured to receive exhaust gas from the distribution cap. The outlet splitter is configured to receive exhaust gas from the inlet splitter. The outlet splitter has an outlet splitter outlet orifice configured to supply exhaust gas to the mixing component flow orifice.

[0018] In some embodiments, the outlet diverter includes more than one outlet diverter perforation oriented toward the mixing component flow orifice, and the more than one outlet diverter perforation is configured to supply exhaust gas to the mixing component flow orifice independently of the outlet diverter outlet orifice.

[0019] In some embodiments, the decomposition chamber further includes a first diversion pipe assembly flange coupled to the inlet diversion pipe and the outlet diversion pipe. The first diversion pipe assembly flange includes: more than one first flange inlet body through-hole, the more than one first flange inlet body through-hole being external to the inlet diversion pipe and configured to provide exhaust gas into the inlet diversion pipe; and more than one second flange inlet body through-hole, the more than one second flange inlet body through-hole being external to the outlet diversion pipe and configured to provide exhaust gas into the outlet diversion pipe.

[0020] In another embodiment, a decomposition chamber for an exhaust aftertreatment system includes a selective catalytic reduction (SCR) catalyst component, a distribution cap, a mixing collector wall, a mixing assembly wall, an outer shell wall, and a splitter. The SCR catalyst component is configured to receive exhaust gas. The mixing collector wall includes a mixing assembly flow orifice. The mixing assembly wall is coupled to the mixing collector wall. The outer shell wall is coupled to the mixing assembly wall. The splitter is coupled to the mixing collector wall around the mixing assembly flow orifice. The splitter separates the distribution cap from the mixing assembly flow orifice. The splitter includes a splitter body, a splitter inlet orifice, a splitter body bypass opening, and a splitter outlet orifice. The splitter body is separate from the outer shell wall. The splitter inlet orifice extends through the splitter body and is configured to receive exhaust gas from the distribution cap. The splitter body bypass opening extends through the splitter body. The splitter body bypass opening is aligned with the splitter inlet orifice and faces the mixing assembly wall. The splitter body bypass opening is configured to receive exhaust gas between the splitter body and the mixing collector wall. The outlet port of the splitter pipe is configured to supply exhaust gas to the flow port of the mixing component.

[0021] In yet another embodiment, a decomposition chamber for an exhaust aftertreatment system includes: a selective catalytic reduction (SCR) catalyst component; a distribution cap configured to receive exhaust gas; a mixing collector wall including a mixing component flow orifice; a mixing component wall coupled to the mixing collector wall; a housing wall coupled to the mixing component wall; and a diverter pipe coupled to the mixing collector wall around the mixing component flow orifice, the diverter pipe separating the distribution cap from the mixing component flow orifice, the diverter pipe encompassing... Includes: a diverter body, separate from the housing wall; a diverter inlet hole extending through the diverter body and configured to receive exhaust gas from the distribution cap; a diverter body bypass opening extending through the diverter body, aligned with the diverter inlet hole and facing the mixing assembly wall, and configured to receive exhaust gas from between the diverter body and the mixing collector wall; and a diverter outlet hole configured to provide exhaust gas to the mixing assembly flow hole.

[0022] In some embodiments, the diverter further includes a first diverter flange, the first diverter flange including more than one first diverter flange opening, the more than one first diverter flange opening being configured to allow exhaust gas to flow into the diverter, the first diverter flange being coupled to the mixing collector wall and the diverter body.

[0023] In some embodiments, the diverter further includes a second diverter flange coupled to the mixing collector wall and the diverter body, the second diverter flange including a second diverter flange orifice configured to allow a reducing agent to pass into the diverter.

[0024] In some embodiments, the manifold further includes an exhaust assist cone that is coupled to and extends from the second manifold flange into the manifold and toward the first manifold flange, the exhaust assist cone being externally connected to a hole in the second manifold flange.

[0025] In some embodiments, the exhaust assist cone includes more than one exhaust assist orifice, each of which is configured to allow exhaust gas to pass from within the splitter through the exhaust assist cone.

[0026] In some embodiments, the diverter further includes a splash protection device that extends from the diverter body into the diverter; and at least a portion of the splash protection device is disposed between the exhaust auxiliary cone and at least a portion of the diverter inlet hole.

[0027] In some embodiments, the diverter further includes more than one diverter body orifice, each of which is aligned with the splash guard and configured to allow exhaust gas to pass through the diverter body. Attached Figure Description

[0028] Details of one or more implementations are set forth in the accompanying drawings and the following description. Other features, aspects, and advantages of this disclosure will become apparent from the specification, drawings, and claims, wherein:

[0029] Figure 1 This is a block diagram illustrating an example exhaust aftertreatment system;

[0030] Figure 2 This is an exploded view of an example disassembly chamber used in an exhaust aftertreatment system;

[0031] Figure 3 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0032] Figure 4 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0033] Figure 5 This is a cross-sectional view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0034] Figure 6This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0035] Figure 7A This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0036] Figure 7B It is intercepted along plane AA. Figure 7A A cross-sectional view of a portion of the decomposition chamber shown;

[0037] Figure 8 This is a front view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0038] Figure 9A It is intercepted along plane BB. Figure 8 A cross-sectional view of a portion of the decomposition chamber shown;

[0039] Figure 9B It is intercepted along plane CC. Figure 8 A cross-sectional view of a portion of the decomposition chamber shown;

[0040] Figure 10 It is intercepted along plane DD. Figure 9A A cross-sectional view of a portion of the decomposition chamber shown;

[0041] Figure 11 This is a perspective view of an example splitter pipe used in the decomposition chamber of an exhaust aftertreatment system;

[0042] Figure 12 It is cut along the plane EE. Figure 11 A cross-sectional view of a portion of the shunt pipe shown;

[0043] Figure 13 This is a front view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0044] Figure 14 It is intercepted along plane FF. Figure 13 A cross-sectional view of a portion of the decomposition chamber shown;

[0045] Figure 15 It is intercepted along plane GG. Figure 14 A cross-sectional view of a portion of the decomposition chamber shown;

[0046] Figure 16 This is a perspective view of an example splitter pipe used in the decomposition chamber of an exhaust aftertreatment system;

[0047] Figure 17 It is intercepted along plane HH. Figure 16 A cross-sectional view of a portion of the shunt pipe shown;

[0048] Figure 18 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0049] Figure 19 It is intercepted along plane JJ. Figure 18 A cross-sectional view of a portion of the decomposition chamber shown;

[0050] Figure 20 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0051] Figure 21 This is a top perspective view of an example transfer pipe used in the decomposition chamber of an exhaust aftertreatment system;

[0052] Figure 22 yes Figure 21 The bottom perspective view of the conveyor tube shown;

[0053] Figure 23 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0054] Figure 24 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0055] Figure 25 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0056] Figure 26 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0057] Figure 27 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0058] Figure 28 This is a front view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0059] Figure 29 It is used for Figure 28 An exploded view of the branch pipe of the decomposition chamber shown.

[0060] Figure 30 yes Figure 28 An exploded rear view of a portion of the decomposition chamber shown.

[0061] Figure 31A It is intercepted along plane KK. Figure 28 A cross-sectional view of a portion of the decomposition chamber shown;

[0062] Figure 31B It is intercepted along plane KK. Figure 28Another cross-sectional view of a portion of the decomposition chamber shown;

[0063] Figure 32 It is intercepted along the plane LL. Figure 28 A cross-sectional view of a portion of the decomposition chamber shown;

[0064] Figure 33 It is intercepted along plane MM. Figure 28 A cross-sectional view of a portion of the decomposition chamber shown;

[0065] Figure 34 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0066] Figure 35 It is intercepted along plane NN. Figure 34 A cross-sectional view of a portion of the decomposition chamber shown;

[0067] Figure 36 It is cut along the plane PP. Figure 34 A cross-sectional view of a portion of the decomposition chamber shown;

[0068] Figure 37 yes Figure 34 A perspective view of a portion of the example decomposition chamber shown;

[0069] Figure 38 It is a cut along the plane QQ. Figure 34 A cross-sectional view of a portion of the decomposition chamber shown.

[0070] Figure 39 This is a cross-sectional view of a portion of the example decomposition chamber;

[0071] Figure 40 This is a perspective view of an example splitter pipe used in the decomposition chamber of an exhaust aftertreatment system;

[0072] Figure 41 yes Figure 40 Another perspective view of the shunt tube shown;

[0073] Figure 42 This is a perspective view of an example splitter pipe used in the decomposition chamber of an exhaust aftertreatment system;

[0074] Figure 43 yes Figure 42 Another perspective view of the shunt tube shown;

[0075] Figure 44 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0076] Figure 45This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0077] Figure 46 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0078] Figure 47 It is intercepted along plane RR. Figure 46 A cross-sectional view of a portion of the decomposition chamber shown;

[0079] Figure 48 It is used for Figure 46 A perspective view of the branch pipe of the decomposition chamber shown.

[0080] Figure 49 yes Figure 48 The front view of the shunt shown;

[0081] Figure 50 It is used for Figure 46 A perspective view of the diversion tube collector of the decomposition chamber shown;

[0082] Figure 51 This is a perspective view of an example splitter pipe used in the decomposition chamber of an exhaust aftertreatment system;

[0083] Figure 52 yes Figure 51 Another perspective view of the shunt tube shown;

[0084] Figure 53 It is used for Figure 51 A perspective view of the first shunt flange of the shunt shown;

[0085] Figure 54 It is used for Figure 51 A perspective view of another first branch flange of the branch pipe shown;

[0086] Figure 55 It is used for Figure 51 A perspective view of another first branch flange of the branch pipe shown;

[0087] Figure 56 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0088] Figure 57 It is intercepted along plane SS. Figure 56 A cross-sectional view of a portion of the decomposition chamber shown;

[0089] Figure 58 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0090] Figure 59This is a perspective view of an example splitter pipe used in the decomposition chamber of an exhaust aftertreatment system;

[0091] Figure 60 yes Figure 59 Another perspective view of the shunt tube shown;

[0092] Figure 61 yes Figure 59 A perspective view of the shunt tube shown;

[0093] Figure 62 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0094] Figure 63A yes Figure 62 Another perspective view of the decomposition chamber shown;

[0095] Figure 63B It is intercepted along plane TT. Figure 63A A cross-sectional view of a portion of the decomposition chamber shown;

[0096] Figure 63C It is intercepted along plane UU. Figure 63A A cross-sectional view of a portion of the decomposition chamber shown;

[0097] Figure 64 This is a perspective view of an example splitter pipe used in the decomposition chamber of an exhaust aftertreatment system;

[0098] Figure 65 yes Figure 64 Another perspective view of the shunt tube shown;

[0099] Figure 66 It is intercepted along the VV plane. Figure 64 The cross-sectional view of the shunt pipe shown;

[0100] Figure 67 This is a perspective view of an example splitter pipe used in the decomposition chamber of an exhaust aftertreatment system;

[0101] Figure 68 yes Figure 67 Another perspective view of the shunt tube shown;

[0102] Figure 69 yes Figure 67 The bottom view of the shunt pipe shown;

[0103] Figure 70 This is a perspective view of an example splitter pipe used in the decomposition chamber of an exhaust aftertreatment system;

[0104] Figure 71 This is a perspective view of an example splitter pipe used in the decomposition chamber of an exhaust aftertreatment system;

[0105] Figure 72 This is a perspective view of an example splitter pipe used in the decomposition chamber of an exhaust aftertreatment system;

[0106] Figure 73 This is a perspective view of an example splitter pipe used in the decomposition chamber of an exhaust aftertreatment system;

[0107] Figure 74 This is a perspective view of an example splitter pipe used in the decomposition chamber of an exhaust aftertreatment system;

[0108] Figure 75 This is a perspective view of an example splitter pipe used in the decomposition chamber of an exhaust aftertreatment system;

[0109] Figure 76 This is a perspective view of an example splitter pipe used in the decomposition chamber of an exhaust aftertreatment system;

[0110] Figure 77 This is a perspective view of an example splitter pipe used in the decomposition chamber of an exhaust aftertreatment system;

[0111] Figure 78A This is a perspective view of an example splitter pipe used in the decomposition chamber of an exhaust aftertreatment system;

[0112] Figure 78B It is intercepted along plane XX. Figure 78A The cross-sectional view of the shunt pipe shown;

[0113] Figure 78C It is intercepted along the plane WW. Figure 78A The cross-sectional view of the shunt pipe shown;

[0114] Figure 78D yes Figure 78A Another perspective view of the shunt tube shown;

[0115] Figure 79 It is intercepted along the YY plane. Figure 78D The cross-sectional view of the shunt pipe shown;

[0116] Figure 80 It is intercepted along the ZZ plane. Figure 78D The cross-sectional view of the shunt pipe shown;

[0117] Figure 81 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0118] Figure 82 yes Figure 81 Another perspective view of the decomposition chamber shown;

[0119] Figure 83 yes Figure 81Another perspective view of the decomposition chamber shown;

[0120] Figure 84 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0121] Figure 85 yes Figure 84 Another perspective view of the decomposition chamber shown;

[0122] Figure 86 It is intercepted along plane AA-AA. Figure 84 The perspective cross-sectional view of the shunt shown;

[0123] Figure 87 It is intercepted along the plane BB-BB. Figure 84 The cross-sectional view of the shunt pipe shown;

[0124] Figure 88 It is intercepted along plane AA-AA. Figure 84 The cross-sectional view of the decomposition chamber shown;

[0125] Figure 89 It is intercepted along plane AA-AA. Figure 84 Another perspective cross-sectional view of the decomposition chamber shown;

[0126] Figure 90 yes Figure 84 Another perspective cross-sectional view of the decomposition chamber shown;

[0127] Figure 91 yes Figure 84 Another perspective cross-sectional view of the decomposition chamber shown;

[0128] Figure 92 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0129] Figure 93 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0130] Figure 94 This is a perspective view of an example splitter pipe used in the decomposition chamber of an exhaust aftertreatment system;

[0131] Figure 95 It is intercepted along the CC-CC plane. Figure 94 The cross-sectional view of the shunt pipe shown;

[0132] Figure 96 It is intercepted along the CC-CC plane. Figure 94 The perspective cross-sectional view of the shunt shown;

[0133] Figure 97 yes Figure 94 Another perspective view of the shunt tube shown;

[0134] Figure 98 It is intercepted along the plane DD-DD. Figure 94 The perspective cross-sectional view of the shunt shown;

[0135] Figure 99 This is a perspective view of an example splitter pipe used in the decomposition chamber of an exhaust aftertreatment system;

[0136] Figure 100 It is intercepted along the plane EE-EE. Figure 99 The perspective cross-sectional view of the shunt shown;

[0137] Figure 101 It is intercepted along the plane FF-FF. Figure 99 The perspective cross-sectional view of the shunt shown;

[0138] Figure 102 It is intercepted along the plane FF-FF. Figure 99 The perspective cross-sectional view of the shunt shown;

[0139] Figure 103 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0140] Figure 104 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0141] Figure 105 This is a front view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0142] Figure 106 This is a front view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0143] Figure 107 This is a front view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0144] Figure 108A This is a side view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0145] Figure 108B yes Figure 108A The cross-sectional view of the decomposition chamber shown;

[0146] Figure 109 This is a front view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0147] Figure 110 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0148] Figure 111 This is a front view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0149] Figure 112 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0150] Figure 113 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0151] Figure 114 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0152] Figure 115 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0153] Figure 116 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0154] Figure 117 This is a front view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0155] Figure 118 This is a front view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0156] Figure 119 This is a front view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0157] Figure 120 This is a front view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0158] Figure 121 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0159] Figure 122 This is a front view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0160] Figure 123 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0161] Figure 124 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0162] Figure 125 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0163] Figure 126This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0164] Figure 127 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0165] Figure 128 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0166] Figure 129 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0167] Figure 130 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0168] Figure 131 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0169] Figure 132 This is a front view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0170] Figure 133 This is a front view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0171] Figure 134 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0172] Figure 135 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0173] Figure 136 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0174] Figure 137 This is a front view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0175] Figure 138 This is a front view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0176] Figure 139 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system;

[0177] Figure 140 This is a perspective view of a portion of an example decomposition chamber used in an exhaust aftertreatment system; and

[0178] Figure 141 This is a front view of a portion of an example decomposition chamber used in an exhaust aftertreatment system.

[0179] It should be recognized that the drawings, in part or in whole, are schematic representations for illustrative purposes. These drawings are provided to show one or more implementations and are to be clearly understood not to be used to limit the scope or meaning of the claims. Detailed Implementation

[0180] The following describes in more detail the methods, apparatus, and various concepts related to the decomposition of exhaust gas in the exhaust aftertreatment system of an internal combustion engine, and their implementations. The various concepts introduced above and discussed in more detail below can be implemented in any of a variety of ways, as the described concepts are not limited to any particular implementation. Examples of specific implementations and applications are provided primarily for illustrative purposes.

[0181] I. Overview

[0182] Internal combustion engines (e.g., diesel internal combustion engines) produce exhaust containing components such as NOx, N2, CO2, and / or H2O. In some applications, exhaust aftertreatment systems are used to dispense a reducing agent into the exhaust to reduce NOx emissions. These exhaust aftertreatment systems may include a decomposition chamber in which the reducing agent is supplied and mixed with the exhaust.

[0183] Enhancing the mixing of reducing agents and exhaust gases can increase the desirability of exhaust aftertreatment systems. However, the mixing of reducing agents and exhaust gases can lead to an increase in back pressure in the decomposition chamber (e.g., in internal combustion engines with exhaust aftertreatment systems), thereby reducing the desirability of the exhaust aftertreatment system (e.g., because the performance of the internal combustion engine is negatively affected by the increased back pressure). Furthermore, reducing agents can form deposits within the exhaust aftertreatment system, such as on the inner surface of the decomposition chamber, which can further reduce the desirability of the decomposition chamber due to increased back pressure and / or unsatisfactory reduction in NOx emissions.

[0184] The embodiments described herein relate to various decomposition chambers that mix reducing agents and exhaust gases in a manner that does not increase back pressure and reduces the formation of reducing agent deposits, thereby increasing the desirability of the decomposition chambers described herein compared to other decomposition chambers.

[0185] Some embodiments described herein involve a decomposition chamber having a collecting wall that forms a throat and a vortex cavity. Exhaust gas is propelled by the collecting wall through the throat, where its velocity increases, and is subsequently supplied to the vortex cavity, where the exhaust gas is vortexed to increase the mixing of the reducing agent and the exhaust gas.

[0186] Some embodiments described herein involve a decomposition chamber having channel walls and a guide that creates vortices in the exhaust gas. The decomposition chamber also includes baffles to protect the dispensing cap from the impact of the reducing agent.

[0187] Some embodiments described herein relate to a decomposition chamber having a manifold in which a reducing agent is provided. Exhaust gas is forced into the manifold, mixed with the reducing agent, forms a vortex by the manifold, and is then exited from the manifold. The manifold also includes conduits for guiding the exhaust gas into the manifold and conduits for guiding the exhaust gas across the various surfaces of the manifold to mitigate the impact of the reducing agent on these surfaces.

[0188] Some embodiments described herein relate to a decomposition chamber having a transfer tube in which a reducing agent is provided. Exhaust gas is provided into the transfer tube on one side of the shell wall, mixed with the reducing agent, provided through the shell wall via the transfer tube, and provided from the transfer tube on the other side of the shell wall.

[0189] The embodiments described herein provide exhaust gas radially (e.g., tangentially) into each component. By providing exhaust gas radially, vortices can be formed within each component. This effect of vortices can be achieved by injecting a reducing agent into the exhaust gas and utilizing these vortices to promote mixing between the reducing agent and the exhaust gas. Furthermore, the embodiments described herein can provide exhaust gas radially from each component (e.g., to catalyst components, etc.). By providing exhaust gas radially, the momentum of the exhaust gas can be maintained, and the pressure drop experienced by the exhaust gas can be reduced.

[0190] II. Example Exhaust Aftertreatment System

[0191] Figure 1 An exhaust aftertreatment system 100 is depicted, which has an exemplary reductant delivery system 102 for an exhaust duct system 104. The exhaust aftertreatment system 100 includes the reductant delivery system 102, a particulate filter (e.g., a diesel particulate filter (DPF)) 106, a decomposition chamber 108 (e.g., a decomposition reactor, reactor tube, decomposition pipe, reactor tube, etc.), and a selective catalytic reduction (SCR) catalyst component 110.

[0192] DPF 106 is configured to remove particulate matter, such as soot, from exhaust gas flowing in exhaust duct system 104. DPF 106 includes an inlet and an outlet, receiving exhaust gas at the inlet and discharging it at the outlet after substantially filtering out particulate matter and / or converting particulate matter into carbon dioxide. In some implementations, DPF 106 may be omitted.

[0193] The decomposition chamber 108 is configured to convert the reducing agent into ammonia. The reducing agent can be, for example, urea, diesel exhaust fluid (DEF), etc. Urea aqueous solution (UWS), aqueous urea solution (e.g., AUS32, etc.), and other similar fluids. The decomposition chamber 108 includes an inlet fluidly coupled to the DPF 106 (e.g., fluidly configured to communicate with the DPF 106, etc.) to receive exhaust gas containing NOx emissions and an outlet for the exhaust gas, NOx emissions, ammonia, and / or reducing agent to flow to the SCR catalyst component 110.

[0194] The reducing agent delivery system 102 includes a dispensing module 112 (e.g., a dispenser, etc.) configured to dispense reducing agent into the decomposition chamber 108 (e.g., via an injector). The dispensing module 112 is mounted to the decomposition chamber 108 such that it can dispense reducing agent into exhaust gas flowing in the exhaust duct system 104. The dispensing module 112 may include a separator inserted between a portion of the dispensing module 112 and a portion of the decomposition chamber 108 on which the dispensing module 112 is mounted.

[0195] The dispensing module 112 is fluidly coupled to the reducing agent source 114. The reducing agent source 114 may include more than one reducing agent source 114. The reducing agent source 114 may, for example, contain... The diesel engine exhaust aftertreatment fluid tank. A reducing agent pump 116 (e.g., a supply unit, etc.) is used to pressurize the reducing agent from the reducing agent source 114 to deliver it to the dispensing module 112. In some embodiments, the reducing agent pump 116 is pressure-controlled (e.g., controlled to obtain a target pressure, etc.). The reducing agent pump 116 includes a reducing agent filter 118. The reducing agent filter 118 filters (e.g., strain, etc.) the reducing agent before it is supplied to the internal components of the reducing agent pump 116 (e.g., piston, vanes, etc.). For example, the reducing agent filter 118 may inhibit or prevent the transport of solids (e.g., solidified reducing agent, contaminants, etc.) to the internal components of the reducing agent pump 116. In this way, the reducing agent filter 118 may facilitate (e.g., allow, permit, etc.) an extended operating time for the reducing agent pump 116 to meet requirements. In some embodiments, the reducing agent pump 116 is coupled to the chassis of a vehicle associated with the exhaust aftertreatment system 100.

[0196] The dispensing module 112 includes at least one injector 120. Each injector 120 is configured to dispense reducing agent into exhaust gas (e.g., within the decomposition chamber 108, etc.). In some embodiments, the reducing agent delivery system 102 further includes an air pump 122. In these embodiments, the air pump 122 draws air from an air source 124 (e.g., an air inlet, etc.) and through an air filter 126 disposed upstream of the air pump 122. Additionally, the air pump 122 supplies air to the dispensing module 112 via a duct. In these embodiments, the dispensing module 112 is configured to mix air and reducing agent into an air-reducing agent mixture and to supply the air-reducing agent mixture to the decomposition chamber 108. In other embodiments, the reducing agent delivery system 102 does not include an air pump 122 or an air source 124. In such embodiments, the dispensing module 112 is not configured to mix the reducing agent with air.

[0197] The dispensing module 112 and the reducing agent pump 116 are also electrically or communicatively coupled to the reducing agent delivery system controller 128. The reducing agent delivery system controller 128 is configured to control the dispensing module 112 to dispense reducing agent into the decomposition chamber 108. The reducing agent delivery system controller 128 may also be configured to control the reducing agent pump 116.

[0198] The reducing agent delivery system controller 128 includes processing circuitry 130. Processing circuitry 130 includes a processor 132 and a memory 134. Processor 132 may include a microprocessor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a combination thereof. Memory 134 may include, but is not limited to, electronic, optical, magnetic, or any other storage or transmission device capable of providing program instructions to the processor, ASIC, FPGA, etc. Memory 134 may include a memory chip, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), flash memory, or any other suitable memory from which the reducing agent delivery system controller 128 can read instructions. Instructions may include code in any suitable programming language. Memory 134 may include more than one module that includes instructions configured to be implemented by processor 132.

[0199] In various embodiments, the reducing agent delivery system controller 128 is configured to communicate with the central controller 136 (e.g., engine control unit (ECU), engine control module (ECM), etc.) of the internal combustion engine having the exhaust aftertreatment system 100. In some embodiments, the central controller 136 and the reducing agent delivery system controller 128 are integrated into a single controller.

[0200] In some embodiments, the central controller 136 may communicate with a display device (e.g., a screen, monitor, touchscreen, head-up display (HUD), indicator light, etc.). The display device may be configured to change its state in response to receiving information from the central controller 136. For example, the display device may be configured to change between a static state (e.g., displaying a green light, displaying a "System OK" message, etc.) and an alarm state (e.g., displaying a flashing red light, displaying a "Service Required" message, etc.) based on communication from the central controller 136. By changing the state, the display device may provide an indication of the status (e.g., operation, service required, etc.) of the reducing agent delivery system 102 to a user (e.g., operator, etc.).

[0201] The decomposition chamber 108 is located upstream of the SCR catalyst component 110. As a result, a reducing agent is injected upstream of the SCR catalyst component 110 via an injector 120, causing the SCR catalyst component 110 to receive a mixture of the reducing agent and exhaust gas. The reducing agent droplets undergo evaporation, pyrolysis, and hydrolysis processes to form non-NOx emissions (e.g., gaseous ammonia, etc.) within the decomposition chamber 108 and / or the exhaust duct system 104.

[0202] The SCR catalyst assembly 110 is configured to help reduce NOx emissions to diatomic nitrogen, water, and / or carbon dioxide by accelerating the NOx reduction process between the reductant and NOx in the exhaust gas. The SCR catalyst assembly 110 includes an inlet that is fluidly coupled to and receives exhaust gas and reductant from the decomposition chamber 108, and an outlet that is fluidly coupled to the end of the exhaust duct system 104.

[0203] The exhaust aftertreatment system 100 may also include (e.g., downstream of the SCR catalyst component 110 or upstream of the DPF 106) an oxidation catalyst (e.g., diesel oxidation catalyst (DOC)) fluidly coupled to the exhaust duct system 104 to oxidize hydrocarbons and carbon monoxide in the exhaust.

[0204] In some embodiments, the DPF 106 may be located downstream of the decomposition chamber 108. For example, the DPF 106 and the SCR catalyst component 110 may be combined into a single unit. In some embodiments, the dispensing module 112 may alternatively be located downstream or upstream of the turbocharger.

[0205] Although the exhaust aftertreatment system 100 has been shown and described in the context of use with a diesel internal combustion engine, it should be understood that the exhaust aftertreatment system 100 can be used with other internal combustion engines (e.g., gasoline internal combustion engines, hybrid internal combustion engines, propane internal combustion engines, and other similar internal combustion engines).

[0206] III. Exemplary Decomposition Chamber

[0207] Figure 2 An exploded view of a decomposition chamber 108 according to an example embodiment is shown. The decomposition chamber 108 includes a communication assembly 200 (e.g., an inlet / outlet assembly, etc.). The communication assembly 200 includes an inlet mating member 202 (e.g., a connector, coupler, etc.). The inlet mating member 202 is configured to receive exhaust gas from a portion of the exhaust duct system 104 downstream of the DPF 106 and upstream of the decomposition chamber 108. The communication assembly 200 also includes an inlet pipe 204. The inlet pipe 204 is coupled to (e.g., attached, fixed to, welded to, integrated into, etc.) the inlet mating member 202 and is configured to receive exhaust gas from the inlet mating member 202. The communication assembly 200 also includes an outlet mating member 206 (e.g., a connector, coupler, etc.). The outlet mating member 206 is configured to provide exhaust gas from the decomposition chamber 108 to a portion of the exhaust duct system 104 downstream of the decomposition chamber 108 and upstream of the SCR catalyst component 110. The communication assembly 200 also includes an outlet connector 208. The outlet connector 208 is coupled to the outlet mating member 206 and configured to provide exhaust gas to the outlet mating member 206. The connector assembly 200 also includes a connector assembly housing wall 212 (e.g., a panel, body, etc.). The inlet pipe 204 and the outlet connector 208 are each coupled to the connector assembly housing wall 212.

[0208] The decomposition chamber 108 also includes a transfer assembly 214 (e.g., an exchange assembly, etc.). The transfer assembly 214 includes at least one SCR catalyst component 216 (e.g., a component, pipe, channel, etc.). Each SCR catalyst component 216 is coupled to an outlet connector 208 and configured to supply exhaust gas to the outlet connector 208. Similar to the SCR catalyst component 110, each SCR catalyst component 216 is configured to assist in the reduction of NOx emissions to diatomic nitrogen, water, and / or carbon dioxide by accelerating the NOx reduction process between the reducing agent and NOx in the exhaust gas.

[0209] Each SCR catalyst member 216 is also coupled to a delivery assembly housing wall 218 (e.g., a panel, body, etc.). For example, the delivery assembly housing wall 218 may include more than one aperture, with each SCR catalyst member 216 coupled to the delivery assembly housing wall 218 around (e.g., around, along, etc.) one of the apertures and along the length of the SCR catalyst member 216 (e.g., opposite one end of the SCR catalyst member 216, etc.). Thus, the SCR catalyst member 216 provides exhaust gas through the delivery assembly housing wall 218. In an example embodiment, the delivery assembly 214 includes five SCR catalyst members 216. In other embodiments, the delivery assembly 214 includes one, two, three, four, six, eight, ten, or other numbers of SCR catalyst members 216. The delivery assembly 214 includes a delivery assembly inlet port 220 (e.g., a hole, opening, etc.) in the delivery assembly housing wall 218. The delivery assembly inlet port 220 is configured to receive an inlet pipe 204 such that the inlet pipe 204 protrudes through the delivery assembly housing wall 218. The inlet pipe 204 is coupled to the housing wall 218 of the conveying component around the inlet pipe hole 220 of the conveying component.

[0210] The decomposition chamber 108 also includes a mixing assembly 222 (e.g., a treatment assembly, a decomposition assembly, etc.). The mixing assembly 222 includes a mixing collector 224. The mixing collector 224 is configured to supply exhaust gas to each SCR catalyst element 216. The mixing collector 224 is coupled to a mixing collector wall 226 (e.g., a panel, a body, etc.). The mixing collector wall 226 includes mixing collector wall orifices 227 (e.g., holes, openings, etc.). The mixing collector wall orifices 227 are configured to facilitate exhaust gas flow from the mixing collector 224 to the SCR catalyst element 216.

[0211] The mixing assembly 222 includes a mixing assembly inlet port 228 (e.g., a hole, opening, etc.) in the mixing collector wall 226. The mixing assembly inlet port 228 is configured to receive an inlet pipe 204 such that the inlet pipe 204 protrudes through the mixing collector wall 226. The inlet pipe 204 is coupled to the mixing collector wall 226 around the mixing assembly inlet port 228.

[0212] The mixing assembly 222 also includes a mixing assembly wall 230 (e.g., a panel, body, etc.) and a housing wall 232 (e.g., a panel, body, etc.). The mixing assembly wall 230 is coupled to the mixing collector wall 226. For example, the mixing assembly wall 230 may be coupled to the mixing collector wall 226 along its perimeter. Similarly, the mixing assembly wall 230 is coupled to the housing wall 232. For example, the mixing assembly wall 230 may be coupled to the housing wall 232 along its perimeter. The mixing assembly 222 also includes an injector coupler 234. The injector coupler 234 is coupled to the mixing assembly wall 230 and / or the housing wall 232. The injector coupler 234 is configured to couple to the injector 120 and / or the dispensing module 112 and to facilitate the injection of a reducing agent through the mixing assembly wall 230 and / or the housing wall 232.

[0213] The decomposition chamber 108 also includes a housing body 236 (e.g., a wall, panel, etc.). The housing body 236 is coupled to the communication component housing wall 212, the transfer component housing wall 218, the mixing collector wall 226, and the mixing component wall 230. For example, the housing body 236 may be coupled to the communication component housing wall 212 around its perimeter, to the transfer component housing wall 218 around its perimeter, to the mixing collector wall 226 around its perimeter, and to the mixing component wall 230 along its edge. The housing body 236 includes an inlet mating hole 238 (e.g., a hole, opening, etc.) and an outlet mating hole 240 (e.g., a hole, opening, etc.). The inlet mating hole 238 is configured to receive the inlet mating member 202, such that the inlet mating member 202 protrudes through the housing body 236, and the outlet mating hole 240 is configured to receive the outlet mating member 206, such that the outlet mating member 206 protrudes through the housing body 236. The housing body 236 is coupled to the inlet mating member 202 around the inlet mating hole 238 and to the outlet mating member 206 around the outlet mating hole 240.

[0214] In operation, exhaust gas enters inlet fitting 202, flows through inlet fitting orifice 238 across housing body 236, and flows into inlet pipe 204. The exhaust gas passes through inlet pipe 204 through transfer assembly housing wall 218 and mixing collector wall 226, and flows into a cavity (e.g., mixing assembly cavity, etc.) defined between mixing collector wall 226, mixing assembly wall 230, and housing wall 232. A reducing agent is introduced into the cavity via injector coupler 234 and mixes with the exhaust gas within the cavity. The exhaust gas then flows into mixing collector 224. The exhaust gas is supplied through mixing collector wall 226 via mixing collector 224 and is supplied to SCR catalyst member 216. SCR catalyst member 216 facilitates the exhaust gas through transfer assembly housing wall 218 and into outlet connector 208. The exhaust gas then flows from outlet connector 208 into outlet fitting 206, through outlet fitting orifice 240 across housing body 236, and out of decomposition chamber 108.

[0215] IV. Example decomposition chamber with first example hybrid component

[0216] Figures 3-5 A decomposition chamber 108 and a mixing assembly 222 according to an example embodiment are shown. The decomposition chamber 108 includes a dispensing cap 300 coupled to an inlet pipe 204. The dispensing cap 300 may abut or be coupled to a mixing collector wall 226. The dispensing cap 300 includes at least one dispensing cap hole 302 disposed on the dispensing cap wall 304. When exhaust gas flows out of the inlet pipe 204, the exhaust gas first flows into the dispensing cap 300, rather than directly into the cavity defined between the mixing collector wall 226, the mixing assembly wall 230, and the housing wall 232. The exhaust gas exits the dispensing cap 300 via the dispensing cap hole 302.

[0217] In various embodiments, the dispensing cap 300 includes more than one dispensing cap hole 302. For example, the dispensing cap 300 may include three, five, six, eight, ten, twelve, or other numbers of dispensing cap holes 302. The dispensing cap holes 302 may be uniformly arranged along the dispensing cap wall 304. In some embodiments, each dispensing cap hole 302 is identical (e.g., having the same diameter, etc.). The number, shape, and size of the dispensing cap holes 302 can be selected to guide flow in a targeted manner.

[0218] After flowing out of the dispensing cap 300 via the dispensing cap orifice 302, the exhaust flows into a collection cavity 306 defined between the dispensing cap wall 304, the mixing collector wall 226, the mixing assembly wall 230, the housing wall 232, the first collection wall 308 (e.g., a panel, etc.), and the second collection wall 310 (e.g., a panel, etc.). The first collection wall 308 and the second collection wall 310 are respectively coupled to the mixing collector wall 226 and the housing wall 232.

[0219] The collecting cavity 306 has an annular portion 311 extending around the dispensing cap 300 and generally formed between the dispensing cap wall 304 and one of the first collecting walls 308 or the second collecting wall 310. The collecting cavity 306 also has a throat 312 (e.g., an hourglass-shaped portion, a converging portion, etc.) formed between the first collecting wall 308 and the second collecting wall 310. As exhaust gas flows out of the dispensing cap orifice 302, the velocity of the exhaust gas increases as it flows toward the throat 312. A first width of the collecting cavity 306 at the throat 312 is smaller than a second width of the collecting cavity 306 outside the throat 312 (e.g., near the dispensing cap 300, etc.). In various embodiments, the width of the collecting cavity 306 gradually decreases from the dispensing cap 300 to the throat 312.

[0220] The injector coupler 234 is coupled to the housing wall 232, not the mixing assembly wall 230. During operation, the reducing agent is supplied to the injection region 314 by the injector 120 and / or the dispensing module 112. In various embodiments, the injector coupler 234 is positioned along the housing wall 232 to position the injection region 314 near the junction (e.g., intersection, boundary, etc.) between the annular portion 311 and the throat portion 312. Thus, the injection region 314 is located upstream of the throat 312. The injector coupler 234 can be positioned such that the reducing agent is dispersed into the exhaust gas at a relatively high exhaust velocity (e.g., upstream of the throat 312, etc.). This minimizes the impact of the reducing agent on the mixing collector wall 226 (e.g., accumulation of reducing agent deposits, formation of wall films, etc.). By minimizing the impact of the reducing agent, the decomposition chamber 108 can operate for extended periods between maintenance (e.g., cleaning, etc.) or replacement. In other embodiments, the injector coupler 234 is configured such that the injection region 314 is located outside the vicinity of the junction between the annular portion 311 and the throat 312.

[0221] After exiting the throat 312, the exhaust gas flows into the first vortex cavity 316 and the second vortex cavity 318. The first vortex cavity 316 is defined between the mixing collector wall 226, the outer shell wall 232, the first collecting wall 308, the splitting wall 320, and the first vortex wall 322. Similarly, the second vortex cavity 318 is defined between the mixing collector wall 226, the outer shell wall 232, the first collecting wall 308, the splitting wall 320, and the second vortex wall 324.

[0222] The first collecting wall 308 is coupled to the mixing collector wall 226, the housing wall 232, the separating wall 320, and the first vortex wall 322 (e.g., such that the flow of exhaust gas between the first collecting wall 308 and the mixing collector wall 226 is substantially prohibited, the flow of exhaust gas between the first collecting wall 308 and the housing wall 232 is substantially prohibited, the flow of exhaust gas between the first collecting wall 308 and the separating wall 320 is substantially prohibited, the flow of exhaust gas between the first collecting wall 308 and the first vortex wall 322 is substantially prohibited, etc.). It should be understood that when the flow between two elements is “substantially prohibited,” fluid transfer between the two elements can be completely prohibited, or only a very small amount (e.g., 5%) of fluid transfer between the two elements can be permitted.

[0223] The second collecting wall 310 is coupled to the mixing collector wall 226, the outer casing wall 232, the separating wall 320, and the second vortex wall 324 (e.g., such that the flow of exhaust gas between the second collecting wall 310 and the mixing collector wall 226 is substantially prohibited, the flow of exhaust gas between the second collecting wall 310 and the outer casing wall 232 is substantially prohibited, the flow of exhaust gas between the second collecting wall 310 and the separating wall 322 is substantially prohibited, the flow of exhaust gas between the second collecting wall 310 and the second vortex wall 324 is substantially prohibited, etc.).

[0224] The separation wall 320 is coupled to the mixing collector wall 226, the outer shell wall 232, the first collecting wall 308, the second collecting wall 310, the first vortex wall 322, and the second vortex wall 324 (e.g., to substantially prohibit the flow of exhaust gas between the separation wall 320 and the mixing collector wall 226, to substantially prohibit the flow of exhaust gas between the separation wall 320 and the outer shell wall 232, to substantially prohibit the flow of exhaust gas between the separation wall 320 and the first collecting wall 308, to substantially prohibit the flow of exhaust gas between the separation wall 320 and the second collecting wall 310, to substantially prohibit the flow of exhaust gas between the separation wall 320 and the first vortex wall 322, and to substantially prohibit the flow of exhaust gas between the separation wall 320 and the second vortex wall 324, etc.).

[0225] The first vortex wall 322 is coupled to the mixing collector wall 226, the outer shell wall 232, the separating wall 320, and the first collecting wall 308 (e.g., such that the flow of exhaust gas between the first vortex wall 322 and the mixing collector wall 226 is substantially prohibited, the flow of exhaust gas between the first vortex wall 322 and the outer shell wall 232 is substantially prohibited, the flow of exhaust gas between the first vortex wall 322 and the separating wall 320 is substantially prohibited, the flow of exhaust gas between the first vortex wall 322 and the first collecting wall 308 is substantially prohibited, etc.).

[0226] The second vortex wall 324 is coupled to the mixing collector wall 226, the outer shell wall 232, the separation wall 320, and the second collecting wall 310 (e.g., such that the flow of exhaust gas between the second vortex wall 324 and the mixing collector wall 226 is substantially prohibited, the flow of exhaust gas between the second vortex wall 324 and the outer shell wall 232 is substantially prohibited, the flow of exhaust gas between the second vortex wall 324 and the separation wall 320 is substantially prohibited, the flow of exhaust gas between the second vortex wall 324 and the second collecting wall 310 is substantially prohibited, etc.).

[0227] The separation wall 320 includes a separation surface 326, a first vortex surface 328, and a second vortex surface 330. In various embodiments, the separation wall 320 is symmetrical about the plane that bisects the separation surface 326, such that the first vortex surface 328 is identical to the second vortex surface 330. As explained in more detail herein, the separation wall 320 distributes the exhaust flow into the first vortex chamber 316 and the second vortex chamber 318, thereby increasing both the uniformity index (UI) of the reducing agent and the exhaust flow distribution index (FDI), thus increasing the desirability of the decomposition chamber 108 (e.g., compared to other decomposition chambers).

[0228] After flowing through the throat 312, the exhaust gas can flow against the separation surface 326 (e.g., flow into, etc.). The separation surface 326 is curved toward the throat 312 (e.g., rounded, protruding, etc.), causing the exhaust gas to be separated (e.g., split, etc.). As a result of this separation, a portion of the exhaust gas flows toward the first vortex surface 328, and a portion flows toward the second vortex surface 330. The first vortex surface 328 and the second vortex surface 330 are each curved (e.g., concave, etc.), such that the exhaust gas flowing along the first vortex surface 328 is propelled into the first vortex cavity 316 (e.g., away from the second vortex cavity 318, etc.), and the exhaust gas flowing along the second vortex surface 330 is propelled into the second vortex cavity 318 (e.g., away from the first vortex cavity 316, etc.). In addition to separating the exhaust gas between the first vortex chamber 316 and the second vortex chamber 318, the separation wall 320 also serves to prevent the exhaust gas from flowing directly from the throat 312 (where the exhaust gas has a relatively high velocity) onto the mixing assembly wall 230. This reduces the impact of the reducing agent on the mixing assembly wall 230. Furthermore, due to the convex shape of the separation surface 326, the first vortex surface 328, and the second vortex surface 330, the impact of the reducing agent on the separation wall 320 is minimized.

[0229] The mixing collector wall 226 includes a first mixing component flow orifice 332 (e.g., a hole, opening, etc.) located between the first vortex wall 322 and the first converging wall 308, and a second mixing component flow orifice 334 (e.g., a hole, opening, etc.) located between the second vortex wall 324 and the second converging wall 310. After flowing along the first vortex surface 328, exhaust gas flows between the separating wall 320 and the first converging wall 308, along the first corner portion 336 of the separating wall 320, and then flows between the first converging wall 308 and the first vortex wall 322, entering the first mixing component flow orifice 332. The first mixing component flow orifice 332 and the second mixing component flow orifice 334 together serve as a mixing collector wall orifice 227. Similarly, after flowing along the second vortex surface 330, the exhaust gas flows between the separation wall 320 and the second collecting wall 310, along the second corner portion 338 of the separation wall 320, and then between the second collecting wall 310 and the second vortex wall 324, and enters the second mixing assembly flow orifice 334. The first collecting wall 308, the first corner portion 336, the first vortex wall 322, the second collecting wall 310, the second corner portion 338, and the second vortex wall 324 are each generally curved to minimize the impact of the reductant (e.g., the formation of reductant deposits, etc.) and to minimize the back pressure of the decomposition chamber 108 (e.g., in an internal combustion engine, etc.). The first mixing assembly flow orifice 332 and the second mixing assembly flow orifice 334 are each positioned to be at least partially aligned with at least one SCR catalyst member 216. As the efficiency and / or performance characteristics (e.g., power, torque, etc.) of the internal combustion engine with exhaust aftertreatment system 100 are increased, minimizing back pressure (e.g., compared to other decomposition chambers, etc.) increases the desirability of decomposition chamber 108.

[0230] In various embodiments, the dispensing cap 300, dispensing cap orifice 302, first collecting wall 308, second collecting wall 310, separating wall 320, first vortex wall 322, and second vortex wall 324 are configured such that the collecting cavity 306 is symmetrical about the axis that divides the collecting cavity 306 in two, and such that the first vortex cavity 316 is a mirror image of the second vortex cavity 318. As a result of this configuration, the flow of exhaust gas through the mixing assembly 222 is optimized, and the mixing (e.g., dispersion, etc.) of the reducing agent in the exhaust gas is enhanced. By increasing the mixing of the reducing agent in the exhaust gas, the exhaust gas UI is improved.

[0231] In some embodiments, the first collecting wall 308 includes at least one first collecting wall drain hole 340 (e.g., a hole, opening, etc.), and the second collecting wall 310 includes at least one second collecting wall drain hole 342 (e.g., a hole, opening, etc.). The first collecting wall drain hole 340 facilitates exhaust gas through the first collecting wall 308 and directly into the first mixing component flow hole 332. Similarly, the second collecting wall drain hole 342 facilitates exhaust gas through the second collecting wall 310 and directly into the second mixing component flow hole 334. In this way, the first collecting wall drain hole 340 and the second collecting wall drain hole 342 help a portion of the exhaust gas flowing into the first mixing component flow hole 332 and the second mixing component flow hole 334 bypass the throat 312, the first vortex cavity 316, and the second vortex cavity 318. As a result, the back pressure of the decomposition chamber 108 can be reduced.

[0232] In some embodiments, such as Figure 4 As shown, the decomposition chamber 108 also includes a first perforated cylinder 400 and a second perforated cylinder 402. The first perforated cylinder 400 is coupled to the outer casing wall 232 (e.g., such that the flow of exhaust gas between the first perforated cylinder 400 and the outer casing wall 232 is substantially prohibited) and the mixing collector wall 226 (e.g., such that the flow of exhaust gas between the first perforated cylinder 400 and the mixing collector wall 226 is substantially prohibited) around the first mixing component flow hole 332. Similarly, the second perforated cylinder 402 is coupled to the outer casing wall 232 (e.g., such that the flow of exhaust gas between the second perforated cylinder 402 and the outer casing wall 232 is substantially prohibited) and the mixing collector wall 226 (e.g., such that the flow of exhaust gas between the second perforated cylinder 402 and the mixing collector wall 226 is substantially prohibited) around the second mixing component flow hole 334.

[0233] The first perforated cylinder 400 includes more than one first perforated cylinder perforation 404 (e.g., hole, opening, orifice). In operation, exhaust gas enters the first perforated cylinder 400 from the first vortex chamber 316 through the first perforated cylinder perforation 404 and flows through the first mixing assembly flow orifice 332. As the exhaust gas flows through the first perforated cylinder perforation 404, the exhaust gas flow is straightened (e.g., exhaust gas turbulence is reduced). Consequently, the back pressure of the decomposition chamber 108 can be reduced. In addition, the first perforated cylinder perforation 404 causes a reduction in the rotational speed of the exhaust gas flowing along the first perforated cylinder 400. As a result, the reducing agent in the exhaust gas flowing around the first perforated cylinder 400 is propelled toward the first vortex wall 322, the first collecting wall 308, and the separating wall 320, which increases the mixing of the reducing agent in the exhaust gas near the first perforated cylinder 400. This reduced rotational speed of the exhaust gas also helps to increase the diffusion of the reducing agent in the exhaust gas near the first perforated cylinder 400. Furthermore, micro-vortices (e.g., turbulence) are generated downstream of and within the first perforated cylinder 400. These micro-vortices further enhance the mixing of the reducing agent and the exhaust gas.

[0234] Similarly, the second perforated cylinder 402 includes more than one second perforated cylinder perforation 406 (e.g., hole, opening, aperture, etc.). In operation, exhaust gas flows from the second vortex chamber 318 through the second perforated cylinder perforation 406 into the second perforated cylinder 402 and flows through the second mixing assembly flow hole 334. As the exhaust gas flows through the second perforated cylinder perforation 406, the exhaust gas flow is straightened (e.g., exhaust gas turbulence is reduced). As a result, the back pressure of the decomposition chamber 108 can be reduced. In addition, the second perforated cylinder perforation 406 causes a reduction in the rotational speed of the exhaust gas flowing along the second perforated cylinder 402. As a result, the reducing agent in the exhaust gas flowing around the second perforated cylinder 402 is propelled toward the second vortex wall 324, the second collecting wall 310, and the separating wall 320, which increases the mixing of the reducing agent in the exhaust gas near the second perforated cylinder 402. This reduced rotational speed of the exhaust gas also helps to increase the diffusion of the reducing agent in the exhaust gas near the second perforated cylinder 402. Furthermore, micro-vortices (e.g., turbulence) are generated downstream of the second perforated cylinder 406 and within the second perforated cylinder 402. These micro-vortices further enhance the mixing of the reducing agent and the exhaust gas.

[0235] In some embodiments, such as Figure 5As shown, the housing wall 232 includes an injector coupling recess 500 recessed (e.g., embedded) within the housing wall 232, and the mixing collector wall 226 includes an injection region recess 502 recessed within the mixing collector wall 226. The injector coupling recess 500 is configured to receive an injector coupler 234 such that the injector coupler 234 can couple to the housing wall 232 without substantially protruding from it. This reduces the space requirements of the decomposition chamber 108. The injection region recess 502 is configured to accommodate at least a portion of the injection region 314. Impact is reduced by the injection region recess 502 because the distance between the injector coupler 234 and the mixing collector wall 226 is maintained despite the presence of the injector coupling recess 500. In some embodiments, the injector coupling recess 500 is defined by a first recess distance (e.g., relative to housing wall 232, etc.), while the injection region recess 502 is defined by a second recess distance (e.g., relative to mixing collector wall 226), the second recess distance being substantially equal to (e.g., within 5% of, etc.) the first recess distance. In some embodiments, the first recess distance and the second recess distance are each substantially equal to 35 millimeters (mm) (e.g., within 5% of 35 mm, etc.). In various applications, the first recess distance and / or the second recess distance are between 1 mm and 90 mm, including 1 mm and 90 mm. In other applications, the first recess distance and / or the second recess distance are between 20 mm and 90 mm, including 20 mm and 90 mm. In some embodiments, the first recess distance and the second recess distance are each equal and each is substantially less than or equal to about 50.8 mm (e.g., within 5% of 50.8 mm, etc.).

[0236] V. Example decomposition chamber with a second example hybrid component

[0237] Figure 6 A decomposition chamber 108 and a mixing assembly 222 according to another example embodiment are shown. The decomposition chamber 108 includes the dispensing cover 300 described herein. The decomposition chamber 108 also includes a flow deflector 600. As explained in more detail herein, the flow deflector 600 diverts exhaust gas into a first collecting chamber 602 and a second collecting chamber 604. The flow deflector 600 includes a first separating wall 606. The first separating wall 606 includes a first separating surface 608, a first collecting surface 610, and a second collecting surface 612. The flow deflector 600 is coupled to a housing wall 232 (e.g., such that the flow of exhaust gas between the flow deflector 600 and the housing wall 232 is substantially prohibited, etc.) and a mixing collector wall 226 (e.g., such that the flow of exhaust gas between the flow deflector 600 and the mixing collector wall 226 is substantially prohibited, etc.).

[0238] After the exhaust gas flows out of the dispensing cap orifice 302, it flows into either a first collecting cavity 602 defined between the first collecting surface 610, the dispensing cap wall 304, the mixing collector wall 226, the mixing assembly wall 230, and the housing wall 232, or a second collecting cavity 604 defined between the second collecting surface 612, the dispensing cap wall 304, the mixing collector wall 226, the mixing assembly wall 230, and the housing wall 232. A first separating surface 608 is curved toward the dispensing cap 300 (e.g., rounded, protruding, etc.) to separate the exhaust gas (e.g., divert it). As a result of this separation, a portion of the exhaust gas flows toward the first collecting surface 610, and a portion flows toward the second collecting surface 612.

[0239] When exhaust gas flows within the first collecting chamber 602, it flows along the first collecting wall 614 of the guide vane 600 (e.g., between the first collecting wall 614 and the mixing component wall 230, etc.) and toward the second separating wall 616 of the guide vane 600. Similarly, when exhaust gas flows within the second collecting chamber 604, it flows along the second collecting wall 622 of the guide vane 600 (e.g., between the first collecting wall 614 and the mixing component wall 230, etc.) and toward the second separating wall 616. The second separating wall 616 includes a second separating surface 624, a first vortex surface 626, and a second vortex surface 628.

[0240] Exhaust gas flows into a first vortex cavity 630 defined between a first collecting wall 614, a first vortex surface 626, a mixing collector wall 226, and a housing wall 232, or a second vortex cavity 632 defined between a second collecting wall 622, a second vortex surface 628, a mixing collector wall 226, and a housing wall 232. A second separation surface 624 bends (e.g., rounded, protruding, etc.) toward the mixing assembly wall 230, causing the exhaust gas to be separated (e.g., diverted, etc.). As a result of this separation, a portion of the exhaust gas flows toward the first vortex surface 626, and a portion flows toward the second vortex surface 628.

[0241] When the exhaust gas flows within the first vortex cavity 630, it flows along the first vortex surface 626 and the first collecting wall 614 and toward the first mixing component flow hole 332. Similarly, when the exhaust gas flows within the second vortex cavity 632, it flows along the second vortex surface 628 and the second collecting wall 622 and toward the second mixing component flow hole 334.

[0242] The mixing component wall 230 includes an injector coupling groove 634 configured to receive an injector coupler 234. The injector coupler 234 is coupled to the injector coupling groove 634. The injector coupling groove 634 extends into the region between the first collecting cavity 602 and the second collecting cavity 604 and aligns with the second separation surface 624. Therefore, the injection region 314 is located at the junction between the first collecting cavity 602, the second collecting cavity 604, the first vortex cavity 630, and the second vortex cavity 632. Due to the relatively high velocity of the exhaust gas within the first collecting cavity 602, the second collecting cavity 604, the first vortex cavity 630, and the second vortex cavity 632, the impact of the reducing agent on the second separation wall 616, the first collecting wall 614, and the second collecting wall 622 is minimized.

[0243] The injector coupling recess 634 is configured to receive the injector coupler 234, such that the injector coupler 234 can couple to the mixing assembly wall 230 without protruding substantially from it. This reduces the space requirements of the decomposition chamber 108.

[0244] The decomposition chamber 108 also includes a first corner wall 636 (e.g., a flange, wall, etc.). The first corner wall 636 is coupled to the mixing collector wall 226 and the housing wall 232. The first corner wall 636 is positioned adjacent to a first corner of the mixing assembly wall 230 near the first mixing assembly flow orifice 332. The first corner wall 636 extends away from the first corner and along the mixing assembly wall 230 toward the dispensing cap 300. The first corner wall 636 may extend around a portion of the first collection wall 614. The first corner wall 636 is separated from the mixing assembly wall 230 by a first gap distance (e.g., spaced apart from the mixing assembly wall 230, etc.). In some embodiments, the first gap distance is constant along the first corner wall 636. In various embodiments, the first gap distance is less than 10 mm. The first gap distance provides thermal insulation, thereby mitigating heat transfer from the first corner wall 636 and maintaining the first corner wall 636 at a relatively high temperature. This relatively high temperature mitigates the formation of reducing agent deposits and increases the desirability of the decomposition chamber 108.

[0245] The decomposition chamber 108 also includes a second corner wall 638 (e.g., a flange, wall, etc.). The second corner wall 638 is coupled to the mixing collector wall 226 and the housing wall 232. The second corner wall 638 is positioned adjacent to a second corner of the mixing assembly wall 230 near the second mixing assembly flow orifice 334. The second corner wall 638 extends away from the second corner and along the mixing assembly wall 230 toward the dispensing cap 300. The second corner wall 638 may extend around a portion of the second collecting wall 622. The second corner wall 638 is separated from the mixing assembly wall 230 by a second gap distance (e.g., spaced apart from the mixing assembly wall 230, etc.). In some embodiments, the second gap distance is constant along the second corner wall 638. In various embodiments, the second gap distance is less than 10 mm. In some embodiments, the second gap distance is approximately equal to a first gap distance. In some embodiments, the second corner wall 638 is an identical reflection of the first corner wall 636. The second gap provides thermal insulation, thereby mitigating heat transfer from the second corner wall 638 and maintaining the second corner wall 638 at a relatively high temperature. This relatively high temperature reduces the formation of reducing agent deposits and increases the desirability of the decomposition chamber 108.

[0246] In some embodiments, the first separating wall 606 includes holes, and the second separating wall 616 includes holes. Thus, exhaust gas can flow from the dispensing cap hole 302 through the holes in the first separating wall 606, through the holes in the second separating wall 616, and into the injection region 314, without flowing through the first collecting chamber 602 or the second collecting chamber 604. This exhaust gas disrupts the injection of the reducing agent, increases convective heat transfer to the injected reducing agent, and increases the decomposition of the reducing agent (which correspondingly reduces the likelihood of reducing agent impact and increases the uniformity index).

[0247] In some embodiments, both the first separating wall 606 and the second separating wall 616 are perforated, allowing exhaust gas to flow from the distribution cover hole 302 through the first separating wall 606, through the second separating wall 616, and into the injection region 314, without flowing through the first collecting cavity 602 or the second collecting cavity 604. This exhaust gas disrupts the injection of the reducing agent, increases convective heat transfer to the injected reducing agent, and increases the decomposition of the reducing agent (which correspondingly reduces the likelihood of reducing agent impact and increases the uniformity index).

[0248] VI. Example decomposition chamber with a third example hybrid component

[0249] Figure 7A and Figure 7BA decomposition chamber 108 and a mixing assembly 222 according to another exemplary embodiment are shown. The decomposition chamber 108 includes the dispensing cover 300 described herein. The decomposition chamber 108 also includes a first channel wall 700 coupled to a mixing collector wall 226 (e.g., such that the flow of exhaust gas between the first channel wall 700 and the mixing collector wall 226 is substantially prohibited, etc.), a housing wall 232 (e.g., such that the flow of exhaust gas between the first channel wall 700 and the housing wall 232 is substantially prohibited, etc.), a dispensing cover wall 304 (e.g., such that the flow of exhaust gas between the first channel wall 700 and the dispensing cover wall 304 is substantially prohibited, etc.), and a mixing assembly wall 230 (e.g., such that the flow of exhaust gas between the first channel wall 700 and the mixing assembly wall 230 is substantially prohibited, etc.).

[0250] The decomposition chamber 108 also includes a second channel wall 702 coupled to a mixing collector wall 226 (e.g., such that the flow of exhaust gas between the second channel wall 702 and the mixing collector wall 226 is substantially prohibited), a housing wall 232 (e.g., such that the flow of exhaust gas between the second channel wall 702 and the housing wall 232 is substantially prohibited), and a mixing assembly wall 230 (e.g., such that the flow of exhaust gas between the second channel wall 702 and the mixing assembly wall 230 is substantially prohibited).

[0251] The first channel wall 700 and the second channel wall 702 together form a channel cavity 706. The channel cavity 706 originates from the distribution cap 300 and terminates in a mixing component flow hole 708 (e.g., an orifice, etc.) in the mixing collector wall 226. The mixing component flow hole 708 serves as a mixing collector wall orifice 227. In various embodiments, the mixing component flow hole 708 is substantially centered relative to the SCR catalyst member 216. For example, the mixing component flow hole 708 may be located on the mixing collector wall 226 to have a center (e.g., a center point, etc.) centered relative to the center of each SCR catalyst member 216. In this way, the mixing component flow hole 708 can increase the FDI and UI of the exhaust gas.

[0252] The decomposition chamber 108 also includes a first corner wall 707 and a second corner wall 709. The first corner wall 707 is located near a first corner of the mixing assembly wall 230, and the second corner wall 709 is located near a second corner of the mixing assembly wall 230. The first corner wall 707 is coupled to the mixing collector wall 226 (e.g., such that the flow of exhaust gas between the first corner wall 707 and the mixing collector wall 226 is substantially prohibited), the housing wall 232 (e.g., such that the flow of exhaust gas between the first corner wall 707 and the housing wall 232 is substantially prohibited), and the mixing assembly wall 230 (e.g., such that the flow of exhaust gas between the first corner wall 707 and the mixing assembly wall 230 is substantially prohibited). The first corner wall 707 is coupled to the mixing assembly wall 230 at a first end and a second end, but is separated from the mixing assembly wall 230 between the first end and the second end. The second corner wall 709 is coupled to the mixing collector wall 226 (e.g., to substantially prohibit the flow of exhaust gas between the second corner wall 709 and the mixing collector wall 226), the housing wall 232 (e.g., to substantially prohibit the flow of exhaust gas between the second corner wall 709 and the housing wall 232), and the mixing assembly wall 230 (e.g., to substantially prohibit the flow of exhaust gas between the second corner wall 709 and the mixing assembly wall 230). The second corner wall 709 is coupled to the mixing assembly wall 230 at a first end of the second corner wall 709 and a second end of the second corner wall 709, but is separated from the mixing assembly wall 230 between the first end of the second corner wall 709 and the second end of the second corner wall 709.

[0253] The first corner wall 707 is separated from the mixing component wall 230 by a first gap distance (e.g., spaced apart from the mixing component wall 230, etc.). In some embodiments, the first gap distance is constant along the first corner wall 707. In various embodiments, the first gap distance is less than 10 mm. The first gap distance provides thermal insulation, thereby mitigating heat transfer from the first corner wall 707 and maintaining the first corner wall 707 at a relatively high temperature. This relatively high temperature can reduce the formation of reducing agent deposits and increase the desirability of the decomposition chamber 108.

[0254] The second corner wall 709 is separated from the mixing component wall 230 by a second gap distance (e.g., spaced apart from the mixing component wall 230, etc.). In some embodiments, the second gap distance is constant along the second corner wall 709. In various embodiments, the second gap distance is less than 10 mm. In some embodiments, the second gap distance is approximately equal to the first gap distance. In some embodiments, the second corner wall 709 is an equivalent reflection of the first corner wall 707. The second gap distance provides thermal insulation, thereby mitigating heat transfer from the second corner wall 709 and maintaining the second corner wall 709 at a relatively high temperature. This relatively high temperature can mitigate the formation of reducing agent deposits and increase the desirability of the decomposition chamber 108.

[0255] After flowing out of the distribution cap 300 (e.g., via the distribution cap orifice 302), the exhaust gas is guided by the first channel wall 700 and the first guide 710 (e.g., blades, walls, baffles, etc.) into the second channel wall 702. The first guide 710 is coupled to the mixing collector wall 226 (e.g., such that the flow of exhaust gas between the first guide 710 and the mixing collector wall 226 is substantially prohibited, etc.) and the housing wall 232 (e.g., such that the flow of exhaust gas between the first guide 710 and the housing wall 232 is substantially prohibited, etc.). The first guide 710 has a curvature that substantially matches the curvature of the adjacent portion of the first corner wall 707. The exhaust gas flows between the first guide 710 and the first corner wall 707 and between the first guide 710 and the second channel wall 702 (e.g., the first guide 710 diverts the exhaust gas when it flows toward the mixing assembly flow orifice 708, etc.).

[0256] After flowing through the first guide vane 710, the exhaust gas is guided by the second guide vane 712 (e.g., blades, walls, baffles, splitters, etc.) into the mixing assembly flow orifice 708. The second guide vane 712 is coupled to the mixing collector wall 226 (e.g., to substantially prohibit the flow of exhaust gas between the second guide vane 712 and the mixing collector wall 226), the housing wall 232 (e.g., to substantially prohibit the flow of exhaust gas between the second guide vane 712 and the housing wall 232), and the second corner wall 709 (e.g., to substantially prohibit the flow of exhaust gas between the second corner wall 709 and the second guide vane 712). The exhaust gas flows between the second guide vane 712 and the second corner wall 709, and then between the second guide vane 712 and the second channel wall 702. Furthermore, the exhaust gas flows between the second guide vane 712 and the second channel wall 702 (e.g., the second guide vane 712 splits the exhaust gas when it flows toward the mixing assembly flow orifice 708, etc.).

[0257] The second channel wall 702 partially intersects with the mixing component flow hole 708, such that the exhaust gas, after first flowing between the second guide 712 and the second channel wall 702, can only flow into the mixing component flow hole 708. The first guide 710 and the second guide 712 cooperate to reduce exhaust gas turbulence (e.g., noise, etc.), reduce the back pressure of the decomposition chamber 108, and increase the exhaust gas FDI and UI.

[0258] The first channel wall 700 is heated by exhaust gas flowing out of the dispensing cap 300 (e.g., before the exhaust gas flows between the second channel wall 702 and the dispensing cap wall 304). This heating reduces the impact of the reducing agent on the first channel wall 700.

[0259] In various embodiments, the first channel wall 700 includes more than one perforation 714 (e.g., hole, opening, aperture, etc.). The perforation 714 allows exhaust gas to pass directly through the first channel wall 700 without flowing around the distribution cover wall 304. The exhaust gas passing through the perforation 714 acts to flush the wall membrane off the first channel wall 700, thereby reducing the impact of the reducing agent on the first channel wall 700 and reducing the back pressure of the decomposition chamber 108.

[0260] Similar to Figure 5 The decomposition chamber 108 described in the text, in Figure 7A and Figure 7B In this configuration, the injector coupler 234 is coupled to the mixing assembly wall 230. Specifically, the injector coupler 234 is coupled to the mixing assembly wall 230 between the second channel wall 702 and the dispensing cover wall 304, such that the injection region 314 is located between the second channel wall 702 and the dispensing cover wall 304.

[0261] The decomposition chamber 108 also includes at least one baffle 716 (e.g., a flap, fin, blade, etc.). Each baffle 716 may be coupled to the dispensing cap 300 (e.g., coupled to the dispensing cap wall 304, etc.), the mixing collector wall 226 (e.g., such that the flow of exhaust gas between the baffle 716 and the mixing collector wall 226 is substantially prohibited, etc.), and / or the housing wall 232 (e.g., such that the flow of exhaust gas between the baffle 716 and the housing wall 232 is substantially prohibited, etc.). The baffle 716 is located near the injection region 314 (e.g., below the injection region 314, etc.). For example, the baffle 716 may be located between the injection region 314 and the dispensing cap wall 304. The baffle 716 serves to direct the exhaust gas to the mixing assembly flow orifice 708 and to mitigate the impact of the reducing agent on the dispensing cap wall 304.

[0262] The first channel wall 700, the second channel wall 702, the first flow deflector 710, and the second flow deflector 712 may each be angled relative to the mixing collector wall 226 (e.g., inclined, etc.). This inclination can increase the flow area, thereby reducing the back pressure of the decomposition chamber 108. For example, in some embodiments, each of the first channel wall 700, the second channel wall 702, the first flow deflector 710, and the second flow deflector 712 is angled relative to the mixing collector wall 226 between 100° and 130° (inclusive). Figure 7A and Figure 7B As shown, the second channel wall 702 and the second flow deflector 712 are angled. In some embodiments, none of the first channel wall 700, the second channel wall 702, the first flow deflector 710 and the second flow deflector 712 are angled relative to the mixing collector wall 226 (e.g., each of the first channel wall 700, the second channel wall 702, the first flow deflector 710 and the second flow deflector 712 is at a 90° angle relative to the mixing collector wall 226).

[0263] The decomposition chamber 108 also includes a third guide vane 718 (e.g., blade, wall, baffle, distributor, etc.). The third guide vane 718 is coupled to the second channel wall 702 and extends toward the distribution cover wall 304 (e.g., near the baffle 716, etc.). The third guide vane 718 serves to disrupt turbulence between the mixing collector wall 226 and the outer casing wall 232, and to direct exhaust gas and reducing agent between the second channel wall 702 and the distribution cover wall 304 toward the first channel wall 700. Furthermore, the third guide vane 718 can be used to mitigate the impact of the reducing agent on the mixing collector wall 226. While the reducing agent can contact the third guide vane 718, the exhaust gas flows above and below the third guide vane 718. This exhaust gas heats the third guide vane 718, potentially causing the reducing agent in contact with the third guide vane 718 to evaporate, and also deflects the reducing agent away from the third guide vane 718. In various embodiments, the third guide vane 718 is positioned on a plane substantially parallel to the plane on which the mixing collector wall 226 is disposed. The third deflector 718 can at least partially divide the spray area 314 into two. In some embodiments, the decomposition chamber 108 does not include the third deflector 718.

[0264] VII. Example decomposition chamber with a fourth example mixing component

[0265] Figures 8-12A decomposition chamber 108 and a mixing assembly 222 according to another example embodiment are shown. The decomposition chamber 108 includes the dispensing cover 300 described herein. The decomposition chamber 108 also includes a diversion conduit 800. The diversion conduit 800 includes a diversion conduit body 802 (e.g., a frame, housing, etc.). The diversion conduit body 802 is generally cylindrical (e.g., tubular, etc.). In various embodiments, the diversion conduit body 802 is coupled to a mixing assembly wall 230 (e.g., such that exhaust flow between the diversion conduit body 802 and the mixing assembly wall 230 is substantially prohibited, etc.), a mixing collector wall 226 (e.g., such that exhaust flow between the diversion conduit body 802 and the mixing collector wall 226 is substantially prohibited, etc.), and a housing wall 232 (e.g., such that exhaust flow between the diversion conduit body 802 and the housing wall 232 is substantially prohibited, etc.).

[0266] The diverter 800 separates the collecting chamber 804 from the delivery chamber 806. The collecting chamber 804 is defined between the mixing collector wall 226, the dispensing cover wall 304, the housing wall 232, the mixing component wall 230, and the diverter body 802. The delivery chamber 806 is defined between the mixing collector wall 226, the housing wall 232, the mixing component wall 230, the diverter body 802, and the mixing component flow hole 808 (e.g., orifice, opening, etc.) in the mixing collector wall 226. The mixing component flow hole 808 serves as a mixing collector wall hole 227.

[0267] After flowing out of the distribution cap 300 (e.g., via the distribution cap orifice 302), the exhaust gas enters the manifold 804 and enters the splitter 800 via a first splitter inlet orifice 812 (e.g., a hole, opening, etc.) or a second splitter inlet orifice 814 (e.g., a hole, opening, etc.). The first splitter inlet orifice 812 is located near a first end 813 of the splitter body 802 that abuts against and / or couples to the mixing assembly wall 230, and the second splitter inlet orifice 814 is located near a second end 815 of the splitter body 802 that abuts against and / or couples to the mixing assembly wall 230, opposite the first end 813. The first end 813 and / or the second end 815 may include tabs (e.g., protrusions, etc.) configured to be received in a groove (e.g., a hole, opening, orifice, etc.) within the mixing assembly wall 230 to facilitate coupling the splitter 800 to the mixing assembly wall 230.

[0268] The main body 802 of the manifold also includes a first conduit 816 (e.g., a cowl, hood, etc.) and a second conduit 818 (e.g., a cap, hood, etc.). The first conduit 816 is adjacent to and extends above the first manifold inlet hole 812. The first conduit 816 extends toward the manifold cavity 804 such that it is used to guide exhaust gas into the first manifold inlet hole 812. Similarly, the second conduit 818 is adjacent to and extends above the second manifold inlet hole 814. The second conduit 818 also extends toward the manifold cavity 804 such that it is used to guide exhaust gas into the second manifold inlet hole 814.

[0269] After flowing through the first branch pipe inlet hole 812 or the second branch pipe inlet hole 814, the exhaust gas enters the branch pipe cavity 820. At least a portion of the first branch pipe inlet hole 812, at least a portion of the first conduit 816, at least a portion of the second branch pipe inlet hole 814, and at least a portion of the second conduit 818 are located near the outer casing wall 232. Thus, after flowing through the first branch pipe inlet hole 812 or the second branch pipe inlet hole 814, the exhaust gas enters the branch pipe cavity 820 radially (e.g., along a tangent to the branch pipe body 802, along a line parallel to and deviating from the tangent to the branch pipe body 802, etc.). This radial entry causes the exhaust gas to form a vortex within the branch pipe cavity 820.

[0270] The mixing assembly wall 230 includes an injector coupler 234. The splitter 800 is positioned such that a second end 815 is disposed around the injector coupler 234 (e.g., external, junction, etc.). Therefore, the injection region 314 is located within the splitter cavity 820. The eddies applied by the first splitter inlet orifice 812, the first conduit 816, the second splitter inlet orifice 814, and the second conduit 818 facilitate mixing of the exhaust gas and the reducing agent within the splitter cavity 820 and ensure relatively high shear on the splitter body 802, thereby mitigating the impact of the reducing agent on the splitter body 802.

[0271] Exhaust gas exits the splitter chamber 820 via the splitter outlet orifice 822 and flows into the delivery chamber 806. From the delivery chamber 806, the exhaust gas flows through the mixing assembly flow orifice 808 and toward the SCR catalyst member 216. In various embodiments, the mixing assembly flow orifice 808 is substantially centered relative to the SCR catalyst member 216. For example, the mixing assembly flow orifice 808 may be located on the mixing collector wall 226 to have a center (e.g., center point, etc.) centered relative to the center of each SCR catalyst member 216. In this way, the mixing assembly flow orifice 808 can increase the FDI and UI of the exhaust gas.

[0272] The manifold outlet orifice 822 is positioned between the first manifold inlet orifice 812 and the second manifold inlet orifice 814. Therefore, the manifold outlet orifice 822 does not overlap with either the first manifold inlet orifice 812 or the second manifold inlet orifice 814. This substantially prevents straight flow (e.g., no vortex flow, etc.) of exhaust gas from the first manifold inlet orifice 812 to the manifold outlet orifice 822, or from the second manifold inlet orifice 814 to the manifold outlet orifice 822, thereby ensuring that substantially all exhaust gas leaving the manifold outlet orifice 822 first forms a vortex through the manifold body 802. Therefore, the manifold 800 increases the mixing of the reducing agent in the exhaust gas and the FDI and UI of the exhaust gas.

[0273] The splitter body 802 also includes a third conduit 824 (e.g., a cap, shroud, etc.). The third conduit 824 is adjacent to and extends above the splitter outlet orifice 822. The third conduit 824 extends toward the delivery chamber 806 such that it guides exhaust gas toward the mixing assembly flow orifice 808. In some embodiments, the third conduit 824 extends above the mixing assembly flow orifice 808. After flowing through the splitter outlet orifice 822, the exhaust gas exits the splitter chamber 820 radially. This radial exit pushes the exhaust gas into the mixing assembly flow orifice 808, thereby minimizing the back pressure of the decomposition chamber 108.

[0274] In various embodiments, the mixing collector wall 226 also includes a diverter coupling hole 826 (e.g., a hole, opening, etc.). The diverter coupling hole 826 is configured to receive a portion of the diverter body 802. The diverter body 802 is coupled to the mixing collector wall 226 around the diverter coupling hole 826 (e.g., such that the flow of exhaust gas between the diverter body 802 and the mixing collector wall 226 is substantially prohibited, etc.). Thus, the diverter cavity 820 is bisected along the plane along which the mixing collector wall 226 is disposed, such that a first portion of the diverter cavity 820 is located on one side of the mixing collector wall 226 and a second portion of the diverter cavity 820 is located on the other side of the mixing collector wall 226. As a result of this arrangement, the diameter of the diverter 800 can be increased without increasing the distance between the mixing collector wall 226 and the housing wall 232, thereby minimizing the space requirements of the decomposition chamber 108. By increasing the diameter of the diverter 800, the UI can be enhanced.

[0275] In various embodiments, the housing wall 232 includes one or more rounded walls 828. Each rounded wall 828 may be configured to receive a portion of one of the first conduit 816, the second conduit 818, or the third conduit 824. Each rounded wall 828 may terminate upstream and / or downstream of the first conduit 816, the second conduit 818, or the third conduit 824 to act as an extension of the first conduit 816, the second conduit 818, or the third conduit 824, and thereby facilitate rather than prevent exhaust gas from flowing into and / or out of the diversion cavity 820. Similar to the diversion coupling orifice 826, the rounded walls 828 allow for an increase in the diameter of the diversion 800 without significantly increasing the space requirements of the decomposition chamber 108.

[0276] In various embodiments, the diverter body 802 includes a guard 830 (e.g., a wall, a protrusion, etc.). The guard 830 abuts against the second diverter inlet orifice 814 and extends into the diverter cavity 820 and toward the delivery cavity 806 (e.g., the guard 830 is bent inward relative to the diverter body 802, etc.). The guard 830 serves to mitigate non-radial flow of exhaust gas into the diverter cavity 820 via the second diverter inlet orifice 814.

[0277] In various embodiments, the diverter body 802 further includes a fourth conduit 832 (e.g., a cap, shroud, etc.). Unlike the first conduit 816, the second conduit 818, and the third conduit 824, the fourth conduit 832 is not used to guide exhaust gas into or out of the diverter cavity 820. Instead, the fourth conduit 832 is used to guide exhaust gas upstream of the diverter 800, through the third conduit 824, and downstream of the diverter 800. By allowing exhaust gas to flow through the third conduit 824, the temperature of the third conduit 824 increases. By increasing the temperature of the third conduit 824, the impact of the reducing agent on the third conduit 824 is reduced. In these embodiments, a rounded wall 828 may be configured to receive a portion of the fourth conduit 832. This rounded wall 828 may terminate upstream and / or downstream of the fourth conduit 832, thereby acting to facilitate rather than impede the flow of exhaust gas into or out of the fourth conduit 832.

[0278] In various embodiments, the diverter body 802 further includes more than one diverter body perforation 834 (e.g., hole, aperture, etc.). The diverter body perforation 834 is disposed on the upstream surface of the diverter body 802 (e.g., adjacent to the manifold 804, etc.). In some embodiments, at least some of the diverter body perforations 834 are located between the first diverter inlet orifice 812 and the second diverter inlet orifice 814 and / or aligned with the diverter outlet orifice 822. In operation, the diverter body perforation 834 facilitates the passage of exhaust gas through the diverter body 802 and into the diverter cavity 820 without passing through the first diverter inlet orifice 812 or the second diverter inlet orifice 814. This reduces the back pressure of the decomposition chamber 108. Furthermore, the exhaust gas flowing through the diverter body perforation 834 heats the diverter body 802, thereby mitigating the impact of the reducing agent on the diverter body 802. By aligning at least some of the perforations 834 in the main body of the diverter with the outlet hole 822 of the diverter, the exhaust gas flowing in the diverter cavity 820 can be pushed out of the outlet hole 822 of the diverter, thereby reducing the back pressure of the decomposition chamber 108 and increasing the exhaust gas flow rate.

[0279] In some embodiments, such as Figure 9B As shown, the mixing collector wall 226 also includes a flared lip 900 (e.g., a rounded lip, a curved lip, etc.). The flared lip 900 extends along the mixing assembly flow hole 808 and curves away from the mixing collector wall 226 toward the conveying assembly housing wall 218 and toward the mixing assembly wall 230. The flared lip 900 can increase the rigidity of the mixing collector wall 226 and improve flow separation of exhaust gas in the vicinity of the flared lip 900 (e.g., along the edge of the mixing assembly flow hole 808, etc.).

[0280] VIII. Example decomposition chamber with fifth example hybrid component

[0281] Figures 13-17 A decomposition chamber 108 and a mixing assembly 222 according to another exemplary embodiment are shown. The decomposition chamber 108 includes the dispensing cap 300 described herein. The decomposition chamber 108 also includes a diverter 1300. The diverter 1300 includes a diverter body 1302 (e.g., a frame, housing, etc.) and a diverter flange 1303 (e.g., a wall, a diverter, etc.). The diverter body 1302 is generally cylindrical. In various embodiments, the diverter body 1302 is coupled to a mixing assembly wall 230 (e.g., such that exhaust flow between the diverter body 1302 and the mixing assembly wall 230 is substantially prohibited, etc.), a mixing collector wall 226 (e.g., such that exhaust flow between the diverter body 1302 and the mixing collector wall 226 is substantially prohibited, etc.), and a housing wall 232 (e.g., such that exhaust flow between the diverter body 1302 and the housing wall 232 is substantially prohibited, etc.).

[0282] The diverter 1300 separates the collecting chamber 1304 from the delivery chamber 1306. The collecting chamber 1304 is defined between the mixing collector wall 226, the dispensing cover wall 304, the outer shell wall 232, the mixing assembly wall 230, the diverter body 1302, and the diverter flange 1303. The delivery chamber 1306 is defined between the mixing collector wall 226, the outer shell wall 232, the mixing assembly wall 230, the diverter body 1302, the diverter flange 1303, and the mixing assembly flow hole 1308 (e.g., a hole, opening, etc.) in the mixing collector wall 226. The mixing assembly flow hole 1308 serves as a mixing collector wall hole 227.

[0283] After flowing out of the distribution cap 300 (e.g., via the distribution cap orifice 302), the exhaust gas enters the manifold 1304 and then enters the diverter 1300 via the diverter inlet orifice 1310 (e.g., a hole, opening, etc.). The diverter body 1302 includes a first end 1309 and a second end 1311 opposite to the first end 1309. The first end 1309 abuts against and / or couples to the diverter flange 1303. The second end 1311 abuts against and / or couples to the mixing assembly wall 230. The diverter inlet orifice 1310 is located near the second end 1311. The first end 1309 may include a tab configured to be received within a groove in the diverter flange 1303 to facilitate coupling between the diverter 1300 and the diverter flange 1303. The second end 1311 may include a tab configured to be received in a groove within the mixing assembly wall 230 to facilitate coupling the splitter 1300 to the mixing assembly wall 230.

[0284] The main body 1302 of the diverter also includes a first conduit 1312 (e.g., a cap, cover, etc.). The first conduit 1312 is adjacent to and extends above the diverter inlet port 1310. The first conduit 1312 extends toward the manifold 1304 such that the first conduit 1312 is used to guide exhaust gas into the diverter inlet port 1310.

[0285] After flowing through the diverter inlet orifice 1310, the exhaust gas enters the diverter cavity 1314. At least a portion of the diverter inlet orifice 1310 and at least a portion of the first conduit 1312 are located near the outer casing wall 232. Thus, after flowing through the diverter inlet orifice 1310, the exhaust gas enters the diverter cavity 1314 radially (e.g., along a tangent to the diverter body 1302, along a line parallel to and deviating from the tangent to the diverter body 1302, etc.). This radial entry causes the exhaust gas to form a vortex within the diverter cavity 1314. The vortex applied by the diverter inlet orifice 1310 and the first conduit 1312 facilitates the mixing of the exhaust gas and the reducing agent within the diverter cavity 1314 and ensures relatively high shear on the diverter body 1302, thereby mitigating the impact of the reducing agent on the diverter body 1302.

[0286] The mixing assembly wall 230 includes an injector coupler 234. The splitter 1300 is positioned such that the injector coupler 234 is received in an injector mounting receiver 1316 in the second end 1311. Thus, the injection region 314 is located within the splitter cavity 1314.

[0287] Exhaust gas exits the splitter chamber 1314 via the splitter outlet orifice 1318 and flows into the delivery chamber 1306. From the delivery chamber 1306, the exhaust gas flows through the mixing assembly flow orifice 1308 and toward the SCR catalyst member 216. In various embodiments, the mixing assembly flow orifice 1308 is substantially centered relative to the SCR catalyst member 216. For example, the mixing assembly flow orifice 1308 may be located on the mixing collector wall 226 to have a center (e.g., center point, etc.) centered relative to the center of each SCR catalyst member 216. In this way, the mixing assembly flow orifice 1308 can increase the FDI and UI of the exhaust gas.

[0288] The manifold outlet orifice 1318 is positioned near the first end 1309. This substantially prevents straight flow (e.g., no vortex flow, etc.) of exhaust gas from the manifold inlet orifice 1310 to the manifold outlet orifice 1318, thus ensuring that substantially all exhaust gas leaving the manifold outlet orifice 1318 is first vortexed by the manifold body 1302. Furthermore, since the manifold inlet orifice 1310 is located near the second end 1311 and the manifold outlet orifice 1318 is located near the first end 1309, the distance between the manifold inlet orifice 1310 and the manifold outlet orifice 1318 can be maximized, thereby increasing the amount of time the exhaust gas remains within the manifold cavity 1314, which correspondingly increases the mixing of the reducing agent in the exhaust gas and the UI.

[0289] The splitter body 1302 also includes a second conduit 1320 (e.g., a cap, shroud, etc.). The second conduit 1320 is adjacent to and extends above the splitter outlet orifice 1318. The second conduit 1320 extends toward the delivery chamber 1306 such that it guides exhaust gas toward the mixing component flow orifice 1308. In some embodiments, the second conduit 1320 extends above the mixing component flow orifice 1308. After flowing through the splitter outlet orifice 1318, the exhaust gas exits radially from the splitter chamber 1314. This radial exit pushes the exhaust gas into the mixing component flow orifice 1308, thereby minimizing the back pressure of the decomposition chamber 108.

[0290] In various embodiments, the mixing collector wall 226 also includes a diverter coupling hole 1322 (e.g., a hole, opening, etc.). The diverter coupling hole 1322 is configured to receive a portion of the diverter body 1302. The diverter body 1302 is coupled to the mixing collector wall 226 around the diverter coupling hole 1322 (e.g., such that the flow of exhaust gas between the diverter body 1302 and the mixing collector wall 226 is substantially prohibited, etc.). Thus, the diverter cavity 1314 is divided in two along the plane along which the mixing collector wall 226 is disposed, such that a first portion of the diverter cavity 1314 is located on one side of the mixing collector wall 226, and a second portion of the diverter cavity 1314 is located on the other side of the mixing collector wall 226. As a result of this arrangement, the diameter of the diverter 1300 can be increased without increasing the distance between the mixing collector wall 226 and the housing wall 232, thereby minimizing the space requirements of the decomposition chamber 108. By increasing the diameter of the 1300 diverter pipe, the exhaust flow rate (UI) can be increased.

[0291] In various embodiments, the housing wall 232 includes one or more rounded walls 1324. Each of the rounded walls 1324 may be configured to receive a portion of one of the first conduit 1312 or the second conduit 1320. Each rounded wall 1324 may terminate upstream and / or downstream of the first conduit 1312 or the second conduit 1320, thereby acting as an extension of the first conduit 1312 or the second conduit 1320, and thus acting to facilitate rather than impede the inflow and / or outflow of exhaust gas into and / or out of the diversion cavity 1314. Similar to the diversion coupling orifice 1322, the rounded walls 1324 allow for an increase in the diameter of the diversion 1300 without significantly increasing the space requirements of the decomposition chamber 108.

[0292] In various embodiments, the diverter body 1302 includes a guard 1326 (e.g., a wall, a protrusion, etc.). The guard 1326 abuts against the diverter inlet orifice 1310 and extends into the diverter cavity 1314 and toward the delivery cavity 1306 (e.g., the guard 1326 is bent inward relative to the diverter body 1302, etc.). The guard 1326 serves to mitigate non-radial flow of exhaust gas into the diverter cavity 1314 via the diverter inlet orifice 1310.

[0293] In various embodiments, the shunt body 1302 further includes a third conduit 1328 (e.g., a cap, shroud, etc.). Unlike the first conduit 1312 and the second conduit 1320, the third conduit 1328 is not used to guide exhaust gas into or out of the shunt cavity 1314. Instead, the third conduit 1328 is used to guide exhaust gas upstream of the shunt 1300, through the second conduit 1320, and downstream of the shunt 1300. By allowing exhaust gas to flow through the second conduit 1320, the temperature of the second conduit 1320 increases. By increasing the temperature of the second conduit 1320, the impact of the reducing agent on the second conduit 1320 is reduced. In these embodiments, a rounded wall 1324 may be configured to receive a portion of the third conduit 1328. This rounded wall 1324 may terminate upstream and / or downstream of the third conduit 1328, thereby acting to facilitate rather than impede the flow of exhaust gas into or out of the third conduit 1328.

[0294] In various embodiments, the diverter body 1302 also includes more than one diverter body perforation 1330 (e.g., hole, aperture, etc.). The diverter body perforation 1330 is disposed on the upstream surface of the diverter body 1302 (e.g., adjacent to the manifold 1304, etc.). In some embodiments, at least some of the diverter body perforations 1330 are aligned with the diverter outlet orifice 1318. In operation, the diverter body perforation 1330 facilitates the passage of exhaust gas through the diverter body 1302 and into the diverter cavity 1314 without passing through the diverter inlet orifice 1310. This reduces the back pressure of the decomposition chamber 108. Furthermore, the exhaust gas flowing through the diverter body perforation 1330 heats the diverter body 1302, thereby mitigating the impact of the reducing agent on the diverter body 1302. By aligning at least some of the perforations 1330 in the main body of the diverter with the outlet hole 1318 of the diverter, the exhaust gas flowing in the diverter cavity 1314 can be pushed out of the outlet hole 1318 of the diverter, thereby reducing the back pressure of the decomposition chamber 108 and increasing the exhaust gas flow rate.

[0295] In various embodiments, the diversion flange 1303 includes more than one diversion flange perforation 1332 (e.g., hole, aperture, etc.). The diversion flange perforation 1332 is disposed on the portion of the diversion flange 1303 opposite to the diversion cavity 1314 (e.g., positioned opposite to the first end 1309, etc.). In operation, the diversion flange perforation 1332 facilitates the passage of exhaust gas (e.g., exhaust gas already flowing between the mixing assembly wall 230 and the diversion flange 1303, etc.) through the diversion flange 1303 and into the diversion cavity 1314 without passing through the diversion inlet hole 1310 or the diversion body perforation 1330. Thus, the back pressure of the decomposition chamber 108 can be reduced. Furthermore, the exhaust gas flowing through the diversion flange perforation 1332 acts to heat the first end 1309, thereby mitigating the impact of the reducing agent on the first end 1309. The exhaust flowing through the perforation 1332 of the splitter flange can also help to redirect the exhaust flowing in the splitter cavity 1314 toward the splitter outlet hole 1318, thereby reducing the back pressure of the decomposition chamber 108 and increasing the exhaust UI.

[0296] In various embodiments, the manifold flange 1303 includes more than one manifold flange transfer perforation 1334 (e.g., hole, aperture, etc.). The manifold flange transfer perforation 1334 is disposed on a portion of the manifold flange 1303 that is not opposite to the manifold cavity 1314 (e.g., downstream of the manifold body 1302, etc.). Alternatively, the manifold flange transfer perforation 1334 is disposed on a portion of the manifold flange 1303 that is opposite to the transfer cavity 1306 (e.g., opposite to the mixing assembly flow hole 1308). In operation, the manifold flange transfer perforation 1334 facilitates exhaust gas (e.g., exhaust gas already flowing between the mixing assembly wall 230 and the manifold flange 1303, etc.) to pass through the manifold flange 1303 and enter the transfer cavity 1306 without passing through the manifold body 1302. Thus, the back pressure of the decomposition chamber 108 can be reduced. Furthermore, the exhaust gas flowing through the transducer flange conveying perforation 1334 heats the transducer flange 1303, thereby reducing the impact of the reducing agent on the transducer flange 1303 (e.g., the portion of the transducer flange 1303 downstream of the transducer outlet orifice 1318). The exhaust gas flowing through the transducer flange conveying perforation 1334 can also be used to redirect the exhaust gas flowing within the conveying chamber 1306 toward the mixing assembly flow orifice 1308, thereby reducing the back pressure of the decomposition chamber 108 and increasing the exhaust gas flow rate (UI).

[0297] IX. Example decomposition chamber with sixth example hybrid component

[0298] Figures 18-22A decomposition chamber 108 and a mixing assembly 222 according to another exemplary embodiment are shown. The decomposition chamber 108 includes the dispensing cover 300 described herein. The decomposition chamber 108 also includes a transfer conduit 1800. The transfer conduit 1800 includes a transfer conduit body 1802 (e.g., a frame, housing, etc.). The transfer conduit body 1802 is generally tubular and configured to facilitate exhaust flow from between the housing wall 232 and the mixing collector wall 226 to between the mixing collector wall 226 and the transfer assembly housing wall 218.

[0299] The mixing collector wall 226 includes a transfer pipe coupling hole 1804. A transfer pipe body 1802 is coupled to the mixing collector wall 226 around the transfer pipe coupling hole 1804 (e.g., to substantially prohibit the flow of exhaust gas between the transfer pipe body 1802 and the mixing collector wall 226). The transfer pipe body 1802 is also coupled to the mixing assembly wall 230 (e.g., to substantially prohibit the flow of exhaust gas between the transfer pipe body 1802 and the mixing assembly wall 230).

[0300] The transfer pipe 1800 includes a transfer pipe inlet portion 1806, a transfer pipe transfer portion 1808, and a transfer pipe outlet portion 1810. The transfer pipe inlet portion 1806 is coupled to the mixing assembly wall 230 and is completely positioned between the mixing collector wall 226, the mixing assembly wall 230, and the housing wall 232. The transfer pipe transfer portion 1808 extends through a transfer pipe coupling hole 1804 and is coupled to the mixing collector wall 226. The transfer pipe outlet portion 1810 is completely positioned between the mixing collector wall 226, the housing body 236, and the transfer assembly housing wall 218. As explained in more detail herein, the transfer pipe inlet portion 1806, the transfer pipe transfer portion 1808, and the transfer pipe outlet portion 1810 are configured to cooperate in providing exhaust gas from between the mixing collector wall 226, the mixing assembly wall 230, and the housing wall 232 to between the mixing collector wall 226, the housing body 236, and the transfer assembly housing wall 218.

[0301] After flowing out of the dispensing cap 300 (e.g., via the dispensing cap orifice 302), the exhaust gas flows between the mixing collector wall 226, the housing wall 232, and the mixing assembly wall 230. The exhaust gas flows into the delivery pipe inlet portion 1806 via more than one delivery pipe inlet portion perforation 1814 (e.g., hole, aperture, opening, etc.). In various embodiments, at least some of the delivery pipe inlet portion perforations 1814 are located near the end 1816 of the delivery pipe 1800.

[0302] The perforations 1814 at the inlet of the transfer pipe are positioned to collectively create vortices in the exhaust gas within the inlet portion 1806 of the transfer pipe. For example, some of the perforations 1814 may be positioned along portions of the inlet portion 1806 near the housing wall 232 and the end 1816. The vortices applied by the perforations 1814 facilitate mixing of the exhaust gas and the reducing agent within the transfer pipe 1800 and ensure relatively high shear on the transfer pipe body 1802, thereby mitigating the impact of the reducing agent on the transfer pipe body 1802.

[0303] The mixing assembly wall 230 includes an injector coupler 234. The delivery pipe 1800 is positioned such that the injector coupler 234 is positioned adjacent to an end portion 1816. The end portion 1816 includes an injector orifice 1818 (e.g., a hole, opening, etc.). The injector orifice 1818 is configured to receive the injector 120, the dispensing module 112, and / or the reducing agent supplied by the injector 120 and / or the dispensing module 112. Thus, the injection zone 314 is located within the delivery pipe inlet portion 1806.

[0304] The exhaust gas within the inlet portion 1806 of the transfer pipe is configured to mix with a reducing agent supplied through the injector orifice 1818 (e.g., due to eddies provided by the positioning of the perforation 1814 in the inlet portion of the transfer pipe). The exhaust gas then flows through the inlet portion 1806, across the mixing collector wall 226, and into the transfer pipe delivery portion 1808. By promoting the flow of exhaust gas across the mixing collector wall 226, the inlet portion 1806 of the transfer pipe prolongs the amount of time for the exhaust gas and reducing agent to mix, thereby increasing the FDI and UI of the exhaust gas.

[0305] The transfer section 1808 receives exhaust gas from the transfer pipe inlet section 1806 and directs the exhaust gas along the path through the mixing collector wall 226 to the transfer pipe outlet section 1810. The transfer section 1808 may be generally U-shaped to prolong the mixing time of the exhaust gas and reducing agent, promote non-separation of the exhaust gas flow (flow attachment) as the exhaust gas passes through the transfer section 1808, and reduce the impact of the reducing agent on the transfer section 1808.

[0306] The delivery pipe outlet portion 1810 receives exhaust gas from the delivery pipe delivery portion 1808 and allows the exhaust gas to flow across the mixing collector wall 226 (e.g., opposite the delivery pipe inlet portion 1806, etc.). By promoting the flow of exhaust gas across the mixing collector wall 226, the delivery pipe outlet portion 1810 prolongs the amount of time that the exhaust gas and reducing agent are mixed.

[0307] In various embodiments, the delivery pipe outlet portion 1810 includes a delivery pipe outlet portion orifice 1820. The delivery pipe outlet portion 1810 provides exhaust gas through the delivery pipe outlet portion orifice 1820 and between the mixer collector wall 226, the housing body 236, and the delivery assembly housing wall 218, so that it can be received by each SCR catalyst component 216. Thus, the delivery pipe outlet portion orifice 1820 functions as a mixer collector wall orifice 227.

[0308] In some embodiments, the delivery pipe outlet portion orifice 1820 is substantially centered relative to the SCR catalyst member 216. For example, the delivery pipe outlet portion orifice 1820 may be located on the delivery pipe outlet portion 1810 to have a center (e.g., center point, etc.) centered relative to the center of each SCR catalyst member 216. In this way, the delivery pipe outlet portion orifice 1820 can increase the FDI and UI of the exhaust gas.

[0309] In various embodiments, the cross-sectional area of ​​the transfer pipe 1800 (e.g., relative to the overall flow direction of exhaust gas through the transfer pipe 1800) remains constant or increases from end 1816 to second end 1822 of the transfer pipe 1800. In various applications, end 1816 has a first cross-sectional area, the inlet of the transfer pipe transfer section 1808 has a second cross-sectional area greater than or equal to the first cross-sectional area, the outlet of the transfer pipe transfer section 1808 has a third cross-sectional area greater than or equal to the second cross-sectional area, and the second end 1822 has a fourth cross-sectional area. In some of these applications, the fourth cross-sectional area is greater than or equal to the third cross-sectional area. In other applications, the fourth cross-sectional area is not greater than or equal to the third cross-sectional area. By maintaining or increasing the cross-sectional area along all or most of the length of the transfer pipe 1800 from end 1816 to second end 1822, the back pressure of the decomposition chamber 108 can be minimized.

[0310] In some embodiments, the mixing collector wall 226 includes a transfer tube recess 1824 configured to receive a transfer tube inlet portion 1806 and / or a transfer tube transfer portion 1808. This arrangement results in the ability to increase the diameter of the transfer tube 1800 without increasing the distance between the mixing collector wall 226 and the housing wall 232, thereby minimizing the space requirements of the decomposition chamber 108. Increasing the diameter of the transfer tube 1800 increases the exhaust UI.

[0311] In various embodiments, instead of or in addition to the delivery pipe outlet portion orifice 1820, the delivery pipe outlet portion 1810 includes more than one delivery pipe outlet portion perforation 1826 (e.g., hole, aperture, opening, etc.). Similar to the delivery pipe outlet portion orifice 1820, exhaust gas exits the delivery pipe outlet portion 1810 via the delivery pipe outlet portion perforation 1826. The delivery pipe outlet portion perforation 1826 may be located on more than one surface of the delivery pipe outlet portion 1810. For example, the delivery pipe outlet portion perforation 1826 may be located on the surface of the delivery pipe outlet portion 1810 near the mixing collector wall 226, on the surface of the delivery pipe outlet portion 1810 near the delivery assembly housing wall 218, and / or on the surface of the delivery pipe outlet portion 1810 near the housing body 236. In some embodiments, the delivery pipe outlet portion perforation 1826 is substantially centered relative to the SCR catalyst member 216. For example, the perforation 1826 at the outlet of the delivery pipe can be located on the outlet portion 1810 of the delivery pipe so as to have a center centered relative to the center of each SCR catalyst component 216 (e.g., the average position of the center point of each outlet portion perforation 1826, etc.). In this way, the outlet portion perforation 1826 of the delivery pipe can increase the FDI and UI of the exhaust gas.

[0312] In various embodiments, the transfer tube transfer portion 1808 includes more than one transfer tube transfer portion perforation 1828 (e.g., hole, aperture, opening, etc.) located on the surface of the transfer tube transfer portion 1808 between the mixing collector wall 226, the housing body 236, and the transfer assembly housing wall 218. Similar to the transfer tube outlet portion perforation 1826, exhaust gas can exit the transfer tube transfer portion perforation 1828 (e.g., before exhaust gas flows into the transfer tube outlet portion 1810, etc.). The transfer tube transfer portion perforation 1828 can reduce the back pressure of the decomposition chamber 108. The transfer tube transfer portion perforation 1828 may be located on more than one surface of the transfer tube transfer portion 1808. For example, the transfer tube transfer portion perforation 1828 may be located on the surface of the transfer tube transfer portion 1808 near the mixing collector wall 226, on the surface of the transfer tube transfer portion 1808 near the transfer assembly housing wall 218, and / or on the surface of the transfer tube transfer portion 1808 near the housing body 236. In some embodiments, at least some of the perforations 1828 in the transfer tube are located on the downstream surface 1830 of the transfer tube, which is situated between the mixing collector wall 226, the transfer assembly housing wall 218, and the housing body 236. By positioning the perforations 1828 in the transfer tube on the downstream surface 1830, exhaust gas is propelled into the perforations 1828 by means of the U-shaped shape of the transfer tube transfer portion 1808, thereby reducing the back pressure of the decomposition chamber 108 and mitigating the impact of the reducing agent on the downstream surface 1830 of the transfer tube.

[0313] In various embodiments, end portion 1816 includes more than one end perforation 1832 (e.g., hole, aperture, opening, etc.). Similar to the inlet portion perforation 1814, the end perforation 1832 receives exhaust gas and supplies it to the inlet portion 1806. However, unlike the inlet portion perforation, the end perforation 1832 is arranged to push the exhaust gas toward the delivery portion 1808. In addition to pushing the exhaust gas received from the inlet portion perforation 1814 toward the delivery portion 1808, the end perforation 1832 also pushes the reducing agent toward the delivery portion 1808, thereby enhancing the mixing of the reducing agent and the exhaust gas within the inlet portion 1806 and minimizing the impact of the reducing agent on the inlet portion 1806.

[0314] X. Example decomposition chamber with seventh example hybrid component

[0315] Figure 23 A decomposition chamber 108 and a mixing assembly 222 according to another exemplary embodiment are shown. The decomposition chamber 108 includes the dispensing cover 300 described herein. The decomposition chamber 108 also includes a channel wall 2300 coupled to the mixing collector wall 226 (e.g., such that the flow of exhaust gas between the channel wall 2300 and the mixing collector wall 226 is substantially prohibited, etc.) and a housing wall 232 (e.g., such that the flow of exhaust gas between the channel wall 2300 and the housing wall 232 is substantially prohibited, etc.). In some embodiments, the channel wall 2300 is additionally coupled to the dispensing cover wall 304 (e.g., such that the flow of exhaust gas between the channel wall 2300 and the dispensing cover wall 304 is substantially prohibited, etc.).

[0316] The channel wall 2300 forms a channel cavity 2302. The channel cavity 2302 originates from the dispensing cap 300 and terminates in a mixing component flow hole 2304 (e.g., an orifice, etc.) in the mixing collector wall 226. The mixing component flow hole 2304 serves as a mixing collector wall hole 227.

[0317] In various embodiments, the mixing assembly flow orifice 2304 is substantially centered relative to the SCR catalyst member 216. For example, the mixing assembly flow orifice 2304 may be located on the mixing collector wall 226 to have a center (e.g., center point, etc.) centered relative to the center of each SCR catalyst member 216. In this way, the mixing assembly flow orifice 2304 can increase the FDI and UI of the exhaust gas.

[0318] After flowing out of the dispensing cap 300 (e.g., via the dispensing cap orifice 302), the exhaust can be guided by the channel wall 2300 into the first passage 2308 (e.g., aisle, channel, etc.). Similar to... Figure 5 The decomposition chamber 108 described in the text, in Figure 23In this configuration, injector coupler 234 is coupled to the mixing assembly wall 230. Specifically, injector coupler 234 is coupled to the mixing assembly wall 230 such that the injection region 314 is at least partially located within the first passage 2308 (e.g., injector coupler 234 is located between parallel walls of the channel wall 2300). The channel cavity 2302 includes the first passage 2308, the second passage 2310, and the third passage 2312.

[0319] The exhaust gas and reducing agent are mixed in the first passage 2308, and the exhaust gas is propelled from the first passage 2308 into the second passage 2310 (e.g., a passageway, channel, etc.), from the second passage 2310 into the third passage 2312 (e.g., a passageway, channel, etc.), and from the third passage 2312 into the mixing assembly flow orifice 2304. The first passage 2308 and the second passage 2310 are separated by a bend (e.g., a right angle, etc.) configured to facilitate mixing of the exhaust gas and reducing agent within the channel cavity 2302. Similarly, the second passage 2310 and the third passage 2312 are separated by a bend (e.g., a right angle, etc.) configured to facilitate mixing of the exhaust gas and reducing agent within the channel cavity 2302.

[0320] After the exhaust gas flows out of the dispensing cap 300 (e.g., via the dispensing cap orifice 302), it can be guided through the channel wall 2300 into a fourth passage 2314 (e.g., a passageway, channel, etc.). The fourth passage 2314 surrounds the dispensing cap 300 and extends between the channel wall 2300 and the mixing component wall 230.

[0321] The decomposition chamber 108 also includes a first corner wall 2316 and a second corner wall 2318. The first corner wall 2316 is located near a first corner of the mixing component wall 230, and the second corner wall 2318 is located near a second corner of the mixing component wall 230. The first corner wall 2316 is coupled to the mixing collector wall 226 (e.g., such that the flow of exhaust gas between the first corner wall 2316 and the mixing collector wall 226 is substantially prohibited), the housing wall 232 (e.g., such that the flow of exhaust gas between the first corner wall 2316 and the housing wall 232 is substantially prohibited), and the mixing component wall 230 (e.g., such that the flow of exhaust gas between the first corner wall 2316 and the mixing component wall 230 is substantially prohibited). The first corner wall 2316 is coupled to the mixing component wall 230 at its first and second ends, but is separated from the mixing component wall 230 between the first and second ends. The second corner wall 2318 is coupled to the mixing collector wall 226 (e.g., to substantially prohibit the flow of exhaust gas between the second corner wall 2318 and the mixing collector wall 226), the housing wall 232 (e.g., to substantially prohibit the flow of exhaust gas between the second corner wall 2318 and the housing wall 232), and the mixing assembly wall 230 (e.g., to substantially prohibit the flow of exhaust gas between the second corner wall 2318 and the mixing assembly wall 230). The second corner wall 2318 is coupled to the mixing assembly wall 230 at its first end and the second end, but is separated from the mixing assembly wall 230 between the first end and the second end.

[0322] The first corner wall 2316 is separated from the mixing component wall 230 by a first gap distance (e.g., spaced apart from the mixing component wall 230, etc.). In some embodiments, the first gap distance is constant along the first corner wall 2316. In various embodiments, the first gap distance is less than 10 mm. The first gap distance provides thermal insulation, thereby mitigating heat transfer from the first corner wall 2316 and maintaining the first corner wall 2316 at a relatively high temperature. This relatively high temperature can mitigate the formation of reducing agent deposits and increase the desirability of the decomposition chamber 108.

[0323] The second corner wall 2318 is separated from the mixing component wall 230 by a second gap distance (e.g., spaced apart from the mixing component wall 230, etc.). In some embodiments, the second gap distance is constant along the second corner wall 2318. In various embodiments, the second gap distance is less than 10 mm. In some embodiments, the second gap distance is approximately equal to the first gap distance. In some embodiments, the second corner wall 2318 is an equivalent reflection of the first corner wall 2316. The second gap distance provides thermal insulation, thereby mitigating heat transfer from the second corner wall 2318 and maintaining the second corner wall 2318 at a relatively high temperature. This relatively high temperature can mitigate the formation of reducing agent deposits and increase the desirability of the decomposition chamber 108.

[0324] The fourth passage 2314 extends between the first corner wall 2316 and the channel wall 2300, and between the second corner wall 2318 and the channel wall 2300. The fourth passage 2314 eventually extends into the first passage 2308.

[0325] In various embodiments, the channel wall 2300 includes more than one channel wall hole 2320 located in a portion of the channel wall 2300 extending between the first corner wall 2316 and the second corner wall 2318. Thus, exhaust can flow between the third passage 2312 and the fourth passage 2314 (e.g., from the third passage 2312 to the fourth passage 2314, and from the fourth passage 2314 to the third passage 2312).

[0326] XI. Example decomposition chamber with eighth example hybrid component

[0327] Figure 24 A decomposition chamber 108 and a mixing assembly 222 according to another exemplary embodiment are shown. The decomposition chamber 108 includes the dispensing cover 300 described herein. The decomposition chamber 108 also includes a channel wall 2400 coupled to the mixing collector wall 226 (e.g., such that the flow of exhaust gas between the channel wall 2400 and the mixing collector wall 226 is substantially prohibited, etc.) and a housing wall 232 (e.g., such that the flow of exhaust gas between the channel wall 2400 and the housing wall 232 is substantially prohibited, etc.). In some embodiments, the channel wall 2400 is additionally coupled to the dispensing cover wall 304 (e.g., such that the flow of exhaust gas between the channel wall 2400 and the dispensing cover wall 304 is substantially prohibited, etc.).

[0328] The channel wall 2400 forms a channel cavity 2402. The channel cavity 2402 originates from the distribution cap 300 and terminates in a mixing component flow hole 2404 (e.g., a hole, etc.) in the mixing collector wall 226. The mixing component flow hole 2404 serves as a mixing collector wall orifice 227. The mixing component flow hole 2404 is not centered on the SCR catalyst member 216, but extends across the mixing collector wall 226, thereby maximizing the area of ​​the mixing component flow hole 2404 and reducing the back pressure of the decomposition chamber 108.

[0329] After flowing out of the dispensing cap 300 (e.g., via the dispensing cap orifice 302), the exhaust can be guided through the channel wall 2400 into the first passage 2408 (e.g., aisle, channel, etc.). Similar to... Figure 5 The decomposition chamber 108 described in the text, in Figure 24 In this configuration, the injector coupler 244 is coupled to the mixing assembly wall 230. Specifically, the injector coupler 244 is coupled to the mixing assembly wall 230 such that the injection region 314 is at least partially located within the first passage 2408 (e.g., the injector coupler 244 is located between the parallel walls of the passage wall 2400).

[0330] Exhaust gas and reducing agent are mixed in a first passage 2408, and the exhaust gas is propelled from the first passage 2408 into a second passage 2410 (e.g., a passageway, channel, etc.), from the second passage 2410 into a third passage 2412 (e.g., a passageway, channel, etc.), and from the third passage 2412 into a mixing assembly flow orifice 2404. The first passage 2408 and the second passage 2410 are separated by a bend (e.g., a right angle, etc.) configured to facilitate mixing of the exhaust gas and reducing agent within the channel cavity 2402. Similarly, the second passage 2410 and the third passage 2412 are separated by a bend (e.g., a right angle, etc.) configured to facilitate mixing of the exhaust gas and reducing agent within the channel cavity 2402. The channel cavity 2402 includes the first passage 2408, the second passage 2410, and the third passage 2412.

[0331] After the exhaust gas flows out of the dispensing cap 300 (e.g., via the dispensing cap orifice 302), it can be guided through the channel wall 2400 into a fourth passage 2414 (e.g., a passageway, channel, etc.). The fourth passage 2414 surrounds the dispensing cap 300 and extends between the channel wall 2400 and the mixing component wall 230.

[0332] The decomposition chamber 108 also includes a first corner wall 2416 and a second corner wall 2418. The first corner wall 2416 is located near a first corner of the mixing assembly wall 230, and the second corner wall 2418 is located near a second corner of the mixing assembly wall 230. The first corner wall 2416 is coupled to the mixing collector wall 226 (e.g., such that the flow of exhaust gas between the first corner wall 2416 and the mixing collector wall 226 is substantially prohibited), the housing wall 232 (e.g., such that the flow of exhaust gas between the first corner wall 2416 and the housing wall 232 is substantially prohibited), and the mixing assembly wall 230 (e.g., such that the flow of exhaust gas between the first corner wall 2416 and the mixing assembly wall 230 is substantially prohibited). The first corner wall 2416 is coupled to the mixing assembly wall 230 at a first end and a second end, but is separated from the mixing assembly wall 230 between the first end and the second end. The second corner wall 2418 is coupled to the mixing collector wall 226 (e.g., to substantially prohibit the flow of exhaust gas between the second corner wall 2418 and the mixing collector wall 226), the housing wall 232 (e.g., to substantially prohibit the flow of exhaust gas between the second corner wall 2418 and the housing wall 232), and the mixing assembly wall 230 (e.g., to substantially prohibit the flow of exhaust gas between the second corner wall 2418 and the mixing assembly wall 230). The second corner wall 2418 is coupled to the mixing assembly wall 230 at a first end and a second end of the second corner wall 2418, but is separated from the mixing assembly wall 230 between the first end and the second end of the second corner wall 2418.

[0333] The first corner wall 2416 is separated from the mixing component wall 230 by a first gap distance (e.g., spaced apart from the mixing component wall 230, etc.). In some embodiments, the first gap distance is constant along the first corner wall 2416. In various embodiments, the first gap distance is less than 10 mm. The first gap distance provides thermal insulation, thereby mitigating heat transfer from the first corner wall 2416 and maintaining the first corner wall 2416 at a relatively high temperature. This relatively high temperature can mitigate the formation of reducing agent deposits and increase the desirability of the decomposition chamber 108.

[0334] The second corner wall 2418 is separated from the mixing component wall 230 by a second gap distance (e.g., spaced apart from the mixing component wall 230, etc.). In some embodiments, the second gap distance is constant along the second corner wall 2418. In various embodiments, the second gap distance is less than 10 mm. In some embodiments, the second gap distance is approximately equal to the first gap distance. In some embodiments, the second corner wall 2418 is an equivalent reflection of the first corner wall 2416. The second gap distance provides thermal insulation, thereby mitigating heat transfer from the second corner wall 2418 and maintaining the second corner wall 2418 at a relatively high temperature. This relatively high temperature can mitigate the formation of reducing agent deposits and increase the desirability of the decomposition chamber 108.

[0335] The fourth passage 2414 extends between the first corner wall 2416 and the channel wall 2400, and between the second corner wall 2418 and the channel wall 2400. The fourth passage 2414 can provide exhaust gas to the mixing assembly flow hole 2404, or it can provide exhaust gas to the first passage 2408.

[0336] XII. Example decomposition chamber with ninth example hybrid component

[0337] Figure 25 A decomposition chamber 108 and a mixing assembly 222 according to another exemplary embodiment are shown. The decomposition chamber 108 includes the dispensing cover 300 described herein. The decomposition chamber 108 also includes a channel wall 2500 coupled to a mixing collector wall 226 (e.g., such that the flow of exhaust gas between the channel wall 2500 and the mixing collector wall 226 is substantially prohibited, etc.), a housing wall 232 (e.g., such that the flow of exhaust gas between the channel wall 2500 and the housing wall 232 is substantially prohibited, etc.), and a mixing assembly wall 230 (e.g., such that the flow of exhaust gas between the channel wall 2500 and the mixing assembly wall 230 is substantially prohibited, etc.). In some embodiments, the channel wall 2500 is additionally coupled to a dispensing cover wall 304 (e.g., such that the flow of exhaust gas between the channel wall 2500 and the dispensing cover wall 304 is substantially prohibited, etc.).

[0338] The decomposition chamber 108 also includes a pipe wall 2501. The pipe wall 2501 is coupled to a mixing collector wall 226 (e.g., such that the flow of exhaust gas between the pipe wall 2501 and the mixing collector wall 226 is substantially prohibited), a housing wall 232 (e.g., such that the flow of exhaust gas between the pipe wall 2501 and the housing wall 232 is substantially prohibited), and a mixing assembly wall 230 (e.g., such that the flow of exhaust gas between the pipe wall 2501 and the mixing assembly wall 230 is substantially prohibited). In some embodiments, the pipe wall 2501 is additionally coupled to a dispensing cap wall 304 (e.g., such that the flow of exhaust gas between the pipe wall 2501 and the dispensing cap wall 304 is substantially prohibited).

[0339] The channel wall 2500 and the pipe wall 2501 together form the collecting cavity 2502 and the conveying cavity 2504. The collecting cavity 2502 is defined between the channel wall 2500, the pipe wall 2501, the mixing collector wall 226, the housing wall 232, the mixing assembly wall 230, and the dispensing cover wall 304. The conveying cavity 2504 is defined between the channel wall 2500, the pipe wall 2501, the mixing collector wall 226, the housing wall 232, and the mixing assembly wall 230.

[0340] After flowing out of the distribution cap 300 (e.g., via the distribution cap orifice 302), the exhaust gas enters the collection chamber 2502. The channel wall 2500 guides the exhaust gas toward the pipe wall orifice 2506 (e.g., hole, opening, etc.) in the pipe wall 2501. The injector coupler 254 is coupled to the housing wall 232 such that the injection region 314 is located directly upstream of the pipe wall orifice 2506.

[0341] The decomposition chamber 108 includes a pipe 2508 coupled to a pipe wall 2501 around a pipe wall orifice 2506 (e.g., such that the flow of exhaust gas between the pipe 2508 and the pipe wall 2501 is substantially prohibited). The pipe 2508 is positioned between the mixing collector wall 226 and the housing wall 232 and is configured to receive exhaust gas from the collecting chamber 2502 and supply exhaust gas to the delivery chamber 2504. As the exhaust gas flows within the pipe 2508, it creates vortices, thereby promoting the mixing of the reducing agent and the exhaust gas.

[0342] Exhaust gas flows out of pipe 2508 and into delivery chamber 2504, and exits delivery chamber via mixing assembly flow orifice 2510 (e.g., hole, opening, etc.). Mixing assembly flow orifice 2510 provides exhaust gas through mixing collector wall 226 and to SCR catalyst component 216.

[0343] XIII. Example decomposition chamber with tenth example hybrid component

[0344] Figure 26 A decomposition chamber 108 and a mixing assembly 222 according to another example embodiment are shown. The decomposition chamber 108 includes the dispensing cap 300 described herein. The decomposition chamber 108 also includes a first deflector 2600 and a second deflector 2602. As explained in more detail herein, the first deflector 2600 and the second deflector 2602 divert exhaust gas into a first collecting chamber 2604 and a second collecting chamber 2606.

[0345] The first diffuser 2600 is coupled to the housing wall 232 (e.g., to substantially prohibit the flow of exhaust gas between the first diffuser 2600 and the housing wall 232, etc.) and the mixing collector wall 226 (e.g., to substantially prohibit the flow of exhaust gas between the first diffuser 2600 and the mixing collector wall 226, etc.). Similarly, the second diffuser 2602 is coupled to the housing wall 232 (e.g., to substantially prohibit the flow of exhaust gas between the second diffuser 2602 and the housing wall 232, etc.) and the mixing collector wall 226 (e.g., to substantially prohibit the flow of exhaust gas between the second diffuser 2602 and the mixing collector wall 226, etc.).

[0346] After the exhaust gas flows out of the distribution cap orifice 302, it flows into a first collecting cavity 2604 defined between the first guide 2600, the distribution cap wall 304, the mixing collector wall 226, the mixing assembly wall 230, and the housing wall 232, or a second collecting cavity 2606 defined between the second guide 2602, the distribution cap wall 304, the mixing collector wall 226, the mixing assembly wall 230, and the housing wall 232. The first guide 2600 and the second guide 2602 are each bent (e.g., rounded, protruding, etc.) toward the distribution cap 300, such that the exhaust gas is separated (e.g., diverted, etc.).

[0347] When exhaust gas flows within the first collecting chamber 2604, it flows along the first guide 2600 (e.g., between the first guide 2600 and the mixing component wall 230, etc.) and toward the first mixing component flow hole 2608 (e.g., a hole, opening, etc.) in the mixing collector wall 226. Similarly, when exhaust gas flows within the second collecting chamber 2606, it flows along the second guide 2602 (e.g., between the second guide 2602 and the mixing component wall 230, etc.) and toward the second mixing component flow hole 2610 (e.g., a hole, opening, etc.) in the mixing collector wall 226.

[0348] The exhaust flows into the first vortex cavity 2612, which is defined between the first guide vane 2600, the mixing collector wall 226, and the outer shell wall 232, or the second vortex cavity 2614, which is defined between the second guide vane 2602, the mixing collector wall 226, and the outer shell wall 232.

[0349] When exhaust gas flows within the first vortex chamber 2612, it flows along the first guide vane 2600 toward the first mixing component flow orifice 2608. Similarly, when exhaust gas flows within the second vortex chamber 2614, it flows along the second guide vane 2602 toward the second mixing component flow orifice 2610.

[0350] In some embodiments, the first guide vane 2600 is spaced apart from and not coupled to the second guide vane 2602. Thus, exhaust gas can flow from the distribution cap orifice 302 between the first guide vane 2600 and the second guide vane 2602 and into the injection region 314, without flowing through either the first vortex cavity 2612 or the second vortex cavity 2614. This exhaust gas disrupts the injection of the reducing agent, increases convective heat transfer to the injected reducing agent, and increases the decomposition of the reducing agent (which correspondingly reduces the likelihood of reducing agent impact and increases the uniformity index).

[0351] In some embodiments, such as Figure 26 As shown, the decomposition chamber 108 also includes a first perforated cylinder 2616 and a second perforated cylinder 2618. The first perforated cylinder 2616 is coupled to the outer casing wall 232 (e.g., such that the flow of exhaust gas between the first perforated cylinder 2616 and the outer casing wall 232 is substantially prohibited) and the mixing collector wall 226 (e.g., such that the flow of exhaust gas between the first perforated cylinder 2616 and the mixing collector wall 226 is substantially prohibited) around the first mixing component flow hole 2610. Similarly, the second perforated cylinder 2618 is coupled to the outer casing wall 232 (e.g., such that the flow of exhaust gas between the second perforated cylinder 2618 and the outer casing wall 232 is substantially prohibited) and the mixing collector wall 226 (e.g., such that the flow of exhaust gas between the second perforated cylinder 2618 and the mixing collector wall 226 is substantially prohibited) around the second mixing component flow hole 2610.

[0352] The first perforated cylinder 2616 includes more than one first perforated cylinder perforation 2620 (e.g., hole, opening, aperture, etc.). In operation, exhaust gas flows from the first vortex cavity 2612 through the first perforated cylinder perforation 2620 into the first perforated cylinder 2616 and through the first mixing assembly flow hole 2608. As the exhaust gas flows through the first perforated cylinder perforation 2620, the exhaust gas flow is straightened (e.g., exhaust gas turbulence is reduced). Consequently, the back pressure of the decomposition chamber 108 can be reduced.

[0353] Similarly, the second perforated cylinder 2618 includes more than one second perforated cylinder perforation 2622 (e.g., hole, opening, aperture, etc.). In operation, exhaust gas flows from the second vortex cavity 2614 through the second perforated cylinder perforation 2622 into the second perforated cylinder 2618 and through the second mixing assembly flow hole 2610. As the exhaust gas flows through the second perforated cylinder perforation 2622, the exhaust gas flow is straightened (e.g., exhaust gas turbulence is reduced). Consequently, the back pressure of the decomposition chamber 108 can be reduced.

[0354] The mixing component wall 230 includes an injector coupling groove 2624 configured to receive an injector coupler 234. The injector coupler 234 is coupled to the injector coupling groove 2624. An injection region 314 is disposed at the junction between the first collecting chamber 2604, the second collecting chamber 2606, the first vortex chamber 2612, and the second vortex chamber 2614. Due to the relatively high velocity of the exhaust gas within the first collecting chamber 2604, the second collecting chamber 2606, the first vortex chamber 2612, and the second vortex chamber 2614, the impact of the reducing agent on the first guide vane 2600 and the second guide vane 2602 is reduced.

[0355] The injector coupling groove 2624 is configured to receive the injector coupler 234, such that the injector coupler 234 can couple to the mixing assembly wall 230 without protruding substantially from it. This reduces the space requirements of the decomposition chamber 108.

[0356] The decomposition chamber 108 also includes a first corner wall 2626 and a second corner wall 2628. The first corner wall 2626 is located near a first corner of the mixing assembly wall 230, and the second corner wall 2628 is located near a second corner of the mixing assembly wall 230. The first corner wall 2626 is coupled to the mixing collector wall 226 (e.g., such that the flow of exhaust gas between the first corner wall 2626 and the mixing collector wall 226 is substantially prohibited), the housing wall 232 (e.g., such that the flow of exhaust gas between the first corner wall 2626 and the housing wall 232 is substantially prohibited), and the mixing assembly wall 230 (e.g., such that the flow of exhaust gas between the first corner wall 2626 and the mixing assembly wall 230 is substantially prohibited). The first corner wall 2626 is coupled to the mixing assembly wall 230 at a first end and a second end, but is separated from the mixing assembly wall 230 between the first end and the second end. The second corner wall 2628 is coupled to the mixing collector wall 226 (e.g., to substantially prohibit the flow of exhaust gas between the second corner wall 2628 and the mixing collector wall 226), the housing wall 232 (e.g., to substantially prohibit the flow of exhaust gas between the second corner wall 2628 and the housing wall 232), and the mixing assembly wall 230 (e.g., to substantially prohibit the flow of exhaust gas between the second corner wall 2628 and the mixing assembly wall 230). The second corner wall 2628 is coupled to the mixing assembly wall 230 at a first end and a second end of the second corner wall 2628, but is separated from the mixing assembly wall 230 between the first end and the second end of the second corner wall 2628.

[0357] The first corner wall 2626 is separated from the mixing component wall 230 by a first gap distance (e.g., spaced apart from the mixing component wall 230, etc.). In some embodiments, the first gap distance is constant along the first corner wall 2626. In various embodiments, the first gap distance is less than 10 mm. The first gap distance provides thermal insulation, thereby mitigating heat transfer from the first corner wall 2626 and maintaining the first corner wall 2626 at a relatively high temperature. This relatively high temperature can mitigate the formation of reducing agent deposits and increase the desirability of the decomposition chamber 108.

[0358] The second corner wall 2628 is separated from the mixing component wall 230 by a second gap distance (e.g., spaced apart from the mixing component wall 230, etc.). In some embodiments, the second gap distance is constant along the second corner wall 2628. In various embodiments, the second gap distance is less than 10 mm. In some embodiments, the second gap distance is approximately equal to the first gap distance. In some embodiments, the second corner wall 2628 is an equivalent reflection of the first corner wall 2626. The second gap distance provides thermal insulation, thereby mitigating heat transfer from the second corner wall 2628 and maintaining the second corner wall 2628 at a relatively high temperature. This relatively high temperature can mitigate the formation of reducing agent deposits and increase the desirability of the decomposition chamber 108.

[0359] XIV. Example Decomposition Chamber with Eleventh Example Hybrid Component

[0360] Figure 27 A decomposition chamber 108 and a mixing assembly 222 according to another exemplary embodiment are shown. The decomposition chamber 108 includes the dispensing cover 300 described herein. The decomposition chamber 108 also includes a plenum 2700. The plenum 2700 includes an outer wall 2702 coupled to a housing wall 232 (e.g., such that the flow of exhaust gas between the outer wall 2702 and the housing wall 232 is substantially prohibited, etc.).

[0361] The filling chamber 2700 also includes an inner filling chamber wall 2704. The inner filling chamber wall 2704 is coupled to the outer filling chamber wall 2702. In some embodiments, the inner filling chamber wall 2704 is structurally integral with the outer filling chamber wall 2702. The filling chamber 2700 also includes a filling chamber inlet 2706 and a filling chamber outlet 2708. The filling chamber inlet 2706 is configured to receive exhaust gas from outside the filling chamber 2700 and provide the exhaust gas to the inner filling chamber wall 2704. The filling chamber outlet 2708 is configured to provide exhaust gas from the inner filling chamber wall 2704 out of the filling chamber 2700 and through the mixing collector wall 226 (e.g., so that the exhaust gas can flow to the SCR catalyst member 216).

[0362] The mixing assembly wall 230 includes an injector coupling recess 2710 configured to receive an injector coupler 234. The injector coupler 234 is coupled to the injector coupling recess 2710. The injection area 314 is located near the inflation chamber inlet 2706 and within the inflation chamber inner wall 2704.

[0363] After the exhaust gas flows out of the distribution cover orifice 302, it flows between the outer wall 2702 of the inflation chamber and the mixing collector wall 226. The exhaust gas then enters the inflation chamber 2700 via the inflation chamber inlet 2706. The exhaust gas mixes with the reducing agent within the inner wall 2704 of the inflation chamber and flows through a throat 2712 defined by the inner wall 2704. As the exhaust gas flows through the throat 2712, its velocity increases. The exhaust gas flows from the throat 2712 into a cup 2714 defined by the inner wall 2704. The cup 2714 causes the exhaust gas to form a vortex around the inflation chamber outlet 2708.

[0364] In some embodiments, such as Figure 27 As shown, the decomposition chamber 108 also includes a perforated cylinder 2716. The perforated cylinder 2716 is coupled around the inflation chamber outlet 2708 to the outer shell wall 232 (e.g., such that the flow of exhaust gas between the perforated cylinder 2716 and the outer shell wall 232 is substantially prohibited, etc.) and the inflation chamber inner wall 2704 (e.g., such that the flow of exhaust gas between the perforated cylinder 2716 and the inflation chamber inner wall 2704 is substantially prohibited, etc.).

[0365] The perforated cylinder 2716 includes more than one perforated cylindrical perforation 2718 (e.g., hole, opening, aperture, etc.). In operation, exhaust gas flows from the cup-shaped member 2714 through the perforated cylindrical perforation 2718 into the perforated cylinder 2716 and through the inflation chamber outlet 2708. As the exhaust gas flows through the perforated cylindrical perforation 2718, the exhaust gas flow is straightened (e.g., exhaust gas turbulence is reduced). Consequently, the back pressure of the decomposition chamber 108 can be reduced.

[0366] XV. Example decomposition chamber with twelfth example hybrid component

[0367] Figures 28-33 A decomposition chamber 108 and a mixing assembly 222 according to another example embodiment are shown. The decomposition chamber 108 includes the dispensing cover 300 described herein. The decomposition chamber 108 also includes a diversion conduit 2800.

[0368] The diverter 2800 includes a diverter body 2802 (e.g., a frame, housing, etc.). The diverter body 2802 is generally cylindrical, elliptical, rectangular, or stadium-shaped (e.g., disc-rectangular, oblong, etc.). Figure 31AIn the middle, the main body of the shunt tube 2802 is roughly cylindrical. Figure 31B In this design, the main body 2802 of the diversion pipe is shaped like a stadium. For example, the main body 2802 of the diversion pipe may have a major axis that is approximately 1.25 times the minor axis of the main body 2802. By making the main body 2802 of the diversion pipe into a stadium shape, the effective flow area of ​​the main body 2802 (e.g., the area through which exhaust gas can flow) can be increased, thereby increasing the exhaust gas handling capacity of the decomposition chamber 108.

[0369] In various embodiments, the manifold body 2802 is coupled to the mixing assembly wall 230 (e.g., such that exhaust flow between the manifold body 2802 and the mixing assembly wall 230 is substantially prohibited, etc.) and / or the mixing collector wall 226 (e.g., such that exhaust flow between the manifold body 2802 and the mixing collector wall 226 is substantially prohibited, etc.). In various embodiments, the manifold body 2802 is separated from the housing wall 232 (e.g., such that exhaust flow between the manifold body 2802 and the housing wall 232 is facilitated, etc.).

[0370] The shunt body 2802 is positioned within a shunt coupler hole 2803 (e.g., a hole, opening, etc.) in the mixing collector wall 226 (e.g., the mixing collector wall 226 is arranged along a plane that divides the shunt body 2802 in two, etc.). The shunt body 2802 is coupled to the mixing collector wall 226 around the shunt coupler hole 2803.

[0371] The splitter 2800 also includes a first splitter flange 2804 (e.g., a wall, a splitter, etc.). The first splitter flange 2804 is coupled (e.g., a first portion of the first splitter flange 2804 is coupled) to a first end 2806 of the splitter body 2802 (e.g., such that the flow of exhaust gas between the first end 2806 and the first splitter flange 2804 is substantially prohibited, etc.). The first splitter flange 2804 is also coupled to a mixing collector wall 226 (e.g., such that the flow of exhaust gas between the mixing collector wall 226 and the first splitter flange 2804 is substantially prohibited, etc.).

[0372] In various embodiments, the first shunt flange 2804 is coupled to the mixing collector wall 226 along the shunt coupler hole 2803 (e.g., along one side of the shunt coupler hole 2803). In various embodiments, the first shunt flange 2804 is not positioned within the shunt coupler hole 2803.

[0373] The manifold 2800 also includes a manifold panel 2810 (e.g., a wall, a manifold connector, etc.). The manifold panel 2810 is coupled to the manifold body 2802 (e.g., to substantially prohibit the flow of exhaust gas between the manifold body 2802 and the manifold panel 2810, etc.). The manifold panel 2810 is also coupled to a first manifold flange 2804 (e.g., to substantially prohibit the flow of exhaust gas between the first manifold flange 2804 and the manifold panel 2810, etc.).

[0374] The manifold 2800 also includes a manifold end plate 2812 (e.g., a panel, wall, manifold, etc.). The manifold end plate 2812 is coupled to the manifold panel 2810 (e.g., to substantially prohibit exhaust flow between the manifold panel 2810 and the manifold end plate 2812). The manifold end plate 2812 is also coupled to a first manifold flange 2804 (e.g., to substantially prohibit exhaust flow between the first manifold flange 2804 and the manifold end plate 2812). The manifold end plate 2812 is also coupled to a mixing collector wall 226 (e.g., to substantially prohibit exhaust flow between the mixing collector wall 226 and the manifold end plate 2812).

[0375] In various embodiments, the shunt end plate 2812 is coupled to the mixing collector wall 226 along the shunt coupler hole 2803 (e.g., along one side of the shunt coupler hole 2803). In various embodiments, the shunt end plate 2812 is not positioned within the shunt coupler hole 2803.

[0376] The splitter 2800 also includes a second splitter flange 2814 (e.g., a wall, a splitter, etc.). The second splitter flange 2814 is coupled (e.g., a first portion of the second splitter flange 2814 is coupled) to a second end 2816 of the splitter body 2802 (e.g., such that the flow of exhaust gas between the second end 2816 and the second splitter flange 2814 is substantially prohibited, etc.). The second end 2816 is opposite to the first end 2806. The second splitter flange 2814 is also coupled to a mixing collector wall 226 (e.g., such that the flow of exhaust gas between the mixing collector wall 226 and the second splitter flange 2814 is substantially prohibited, etc.).

[0377] The first end 2806 may include a tab configured to be received in a groove within the first shunt flange 2804 to facilitate coupling between the shunt body 2802 and the first shunt flange 2804. The second end 2816 may include a tab configured to be received in a groove within the second shunt flange 2814 to facilitate coupling between the shunt body 2802 and the second shunt flange 2814.

[0378] In various embodiments, the second shunt flange 2814 is coupled to the mixing collector wall 226 along the shunt coupler hole 2803 (e.g., along one side of the shunt coupler hole 2803). In various embodiments, the second shunt flange 2814 is not positioned within the shunt coupler hole 2803.

[0379] The diverter 2800 also includes a diverter collector 2818 (e.g., a spoon, a panel, etc.). The diverter collector 2818 is connected to the mixing collector wall 226 (e.g., such that the flow of exhaust gas between the mixing collector wall 226 and the diverter collector 2818 is substantially prohibited, etc.), such that a portion of the diverter body 2802 is positioned within and / or adjacent to the diverter collector 2818.

[0380] In various embodiments, the shunt collector 2818 is coupled to the mixing collector wall 226 along the shunt coupler hole 2803 (e.g., along one side of the shunt coupler hole 2803). In various embodiments, the shunt collector 2818 is not positioned within the shunt coupler hole 2803.

[0381] The manifold 2800 also includes a manifold manifold wall 2820 (e.g., a flange, a manifold connector, etc.). The manifold manifold wall 2820 is coupled to the manifold body 2802 (e.g., to substantially prohibit exhaust flow between the manifold manifold wall 2820 and the manifold body 2802, etc.). The manifold manifold wall 2820 is also coupled to the manifold collector 2818 (e.g., to substantially prohibit exhaust flow between the manifold manifold wall 2820 and the manifold collector 2818, etc.). The manifold manifold wall 2820 can be positioned within the manifold coupler orifice 2803.

[0382] In various embodiments, the diverter 2800 further includes a diverter guide 2822 (e.g., a spoon-shaped member, a blade, etc.). The diverter guide 2822 is configured to guide exhaust gas flowing out of the diverter 2800 downstream. The diverter guide 2822 includes a diverter guide wall 2824 (e.g., a flange, a panel, etc.). The diverter guide wall 2824 is coupled to a diverter branch wall 2820 (e.g., such that exhaust gas flow between the diverter guide wall 2824 and the diverter branch wall 2820 is substantially prohibited, etc.). In various embodiments, the diverter guide wall 2824 is additionally coupled to the diverter body 2802 (e.g., such that exhaust gas flow between the diverter guide wall 2824 and the diverter body 2802 is substantially prohibited, etc.). The diverter guide wall 2824 may be positioned within a diverter coupler orifice 2803. In some embodiments, the diverter guide 2822 includes more than one diverter guide wall 2824, allowing exhaust gas to flow between adjacent diverter guide walls 2824. By including more than one diverter guide wall 2824, the diverter 2800 can provide increased control over exhaust gas flow.

[0383] In various embodiments, the diverter guide 2822 further includes a diverter guide wall 2826 (e.g., a flange, panel, etc.). The diverter guide wall 2826 is coupled to a diverter guide wall 2824 (e.g., to substantially prohibit exhaust flow between the diverter guide wall 2824 and the diverter guide wall 2826, etc.) and a diverter wall 2820 (e.g., to substantially prohibit exhaust flow between the diverter wall 2820 and the diverter guide wall 2826, etc.). The diverter guide wall 2826 may be positioned within the diverter coupler orifice 2803. In some embodiments, the diverter guide 2822 does not include the diverter guide wall 2826. In some embodiments, the diverter 2800 does not include the diverter guide 2822.

[0384] Diverter 2800 establishes a collecting cavity 2828. The collecting cavity 2828 is defined between the mixing collector wall 226, the dispensing cover wall 304, the outer shell wall 232, the mixing component wall 230, the diverter body 2802, the first diverter flange 2804, the diverter panel 2810, the diverter end plate 2812, and the second diverter flange 2814.

[0385] After the exhaust gas flows out of the distribution cover 300 (e.g., via the distribution cover hole 302), the exhaust gas from the collection chamber enters the diversion tube body 2802 in one of a variety of different ways.

[0386] First, exhaust gas can enter the splitter body 2802 via a splitter inlet hole 2830 (e.g., a hole, opening, etc.) formed in the splitter body 2802. The splitter inlet hole 2830 is located between the outer casing wall 232 and the position where the splitter panel 2810 is coupled to the splitter body 2802. After flowing through the splitter inlet hole 2830, the exhaust gas enters the splitter cavity 2832 defined by the splitter body 2802.

[0387] Second, exhaust gas can enter the diverter body 2802 via a diverter body perforation 2834 (e.g., hole, aperture, opening, etc.) formed in the diverter body 2802. The diverter body 2802 includes more than one diverter body perforation 2834. According to various embodiments, each diverter body perforation 2834 is positioned between the diverter inlet orifice 2830 and the first diverter flange 2804. After flowing through the diverter body perforation 2834, exhaust gas enters the diverter cavity 2832. In some embodiments, the diverter body 2802 does not include any diverter body perforation 2834.

[0388] Third, exhaust gas can enter the main body 2802 of the diversion pipe via a first diversion pipe flange perforation 2836 (e.g., hole, opening, etc.). The first diversion pipe flange 2804 includes more than one first diversion pipe flange perforation 2836. According to various embodiments, each first diversion pipe flange perforation 2836 is at least partially external to the first end 2806 (e.g., surrounding, intersecting, encircling, etc.). After flowing through the first diversion pipe flange perforation 2836, exhaust gas enters the diversion pipe cavity 2832.

[0389] Fourth, exhaust gas can enter the main body 2802 of the splitter pipe through the second splitter pipe flange hole 2838 (e.g., a hole, opening, etc.). The second splitter pipe flange hole 2838 is at least partially external to the second end 2816 (e.g., surrounded, intersected, encircled, etc.). After flowing through the second splitter pipe flange hole 2838, the exhaust gas enters the splitter pipe cavity 2832.

[0390] The manifold inlet 2830 is sized and positioned such that the exhaust gas supplied to the manifold cavity 2832 is greater than the exhaust gas supplied to the manifold body orifice 2834, the first manifold flange through-hole 2836, and the second manifold flange through-hole 2838 combined. At least a portion of the manifold inlet 2830 is located near the housing wall 232. Thus, the exhaust gas flowing through the manifold inlet 2830 enters the manifold cavity 2832 radially (e.g., along a tangent to the manifold body 2802, along a line parallel to and deviating from the tangent to the manifold body 2802, etc.). This radial entry causes the exhaust gas to form a vortex within the manifold cavity 2832. The eddy current applied by the inlet hole 2830 of the manifold helps the exhaust gas and reducing agent mix in the manifold cavity 2832 and ensures relatively high shear on the manifold body 2802, thereby reducing the impact of the reducing agent on the manifold body 2802.

[0391] The mixing assembly wall 230 includes an injector coupler 234. The splitter 2800 is positioned such that the injector coupler 234 is aligned with and spaced apart from the second splitter flange 2814. Thus, the injection region 314 is located within the splitter cavity 2832 and the collecting cavity 2828. Consequently, exhaust gas flowing through the second splitter flange orifice 2838 is propelled into the splitter cavity 2832 by the reducing agent supplied by the dispensing module 112.

[0392] In various embodiments, the diverter body 2802 includes a guard 2840 (e.g., a wall, a protrusion, etc.). The guard 2840 abuts against the diverter inlet orifice 2830 and extends into the diverter cavity 2832 (e.g., the guard 2840 is bent inward relative to the diverter body 2802, etc.). The guard 2840 serves to mitigate non-radial flow of exhaust gas into the diverter cavity 2832 via the diverter inlet orifice 2830.

[0393] Exhaust gas exits the splitter cavity 2832 via the splitter outlet port 2842 and flows toward the SCR catalyst component 216. The exhaust gas flowing out of the splitter outlet port 2842 flows between the splitter body 2802, the first splitter flange 2804, the splitter panel 2810, the splitter end plate 2812, and the second splitter flange 2814 (e.g., into the groove in the mixing collector wall 226 formed by the splitter body 2802, the first splitter flange 2804, the splitter panel 2810, the splitter end plate 2812, and the second splitter flange 2814). The main body 2802 of the diverter, the first diverter flange 2804, the diverter panel 2810, the diverter end plate 2812, and the second diverter flange 2814 form a volume within which the exhaust gas leaving the diverter outlet hole 2842 can expand, thereby minimizing the back pressure of the decomposition chamber 108, promoting the increase of the UI of the reducing agent and the exhaust gas, and promoting the increase of the flow distribution index of the exhaust gas.

[0394] In some embodiments, the manifold body 2802, the first manifold flange 2804, the manifold panel 2810, the manifold end plate 2812, and the second manifold flange 2814 are shaped, sized, or otherwise configured in various ways to guide exhaust toward the SCR catalyst members 216 and / or (e.g., for targeted distribution, etc.) distribute exhaust between the SCR catalyst members 216. For example, the manifold panel 2810 may include features (e.g., protrusions, projections, ribs, flanges, fins, etc.) extending toward the SCR catalyst members 216 such that exhaust exiting the manifold outlet orifice 2842 flows against and / or between the features and is guided toward and / or distributed between the SCR catalyst members 216.

[0395] As the exhaust gas flows toward the SCR catalyst assembly 216, a portion of the exhaust gas may flow into the manifold collector cavity 2844 defined by the manifold collector 2818. A portion of the exhaust gas flowing within the manifold collector cavity 2844 is guided out of the manifold collector cavity 2844 by the manifold guide 2822, toward the SCR catalyst assembly 216. Another portion of the exhaust gas flowing within the manifold collector cavity 2844 flows out of the manifold collector cavity 2844 via manifold manifold wall perforations 2846 (e.g., holes, openings, etc.) in the manifold manifold wall perforations 2820. This additional exit of the exhaust gas from the manifold collector cavity 2844 provided by the manifold manifold wall perforations 2846 minimizes the back pressure of the decomposition chamber 108.

[0396] In some embodiments, the outer casing wall 232 is spaced apart from the manifold body 2802. Thus, a portion of the exhaust gas flows between the outer casing wall 232 and the manifold body 2802, along the manifold body 2802, between the manifold body 2802 and the mixing assembly wall 230, and enters the manifold collector cavity 2844. Therefore, the exhaust gas can flow into the manifold collector cavity 2844 from the manifold outlet port 2842 or after flowing around the manifold body 2802. This reduces the back pressure of the decomposition chamber 108. The exhaust gas flowing around the manifold body 2802 heats the manifold body 2802, thereby mitigating the impact of the reducing agent on the manifold body 2802. Furthermore, the exhaust gas flowing around the manifold body 2802 pushes the exhaust gas within the manifold collector cavity 2844 out of the manifold collector cavity 2844, thereby reducing the back pressure of the decomposition chamber 108 and increasing the exhaust gas flow rate.

[0397] The outlet port 2842 of the manifold is positioned close to the first end 2806. This substantially prevents straight flow (e.g., no vortex flow, etc.) of exhaust gas from the inlet port 2830 to the outlet port 2842, ensuring that substantially all exhaust gas leaving the outlet port 2842 is first vortexed by the manifold body 2802. Furthermore, since the inlet port 2830 is positioned near the second end 2816 and the outlet port 2842 is positioned near the first end 2806, the distance between the inlet port 2830 and the outlet port 2842 can be maximized, thereby increasing the amount of time the exhaust gas remains within the manifold cavity 2832, which correspondingly increases the mixing and UI of the reducing agent in the exhaust gas.

[0398] The manifold body perforation 2834 is provided on the upstream surface of the manifold body 2802 (e.g., adjacent to the manifold cavity 2828, etc.). In some embodiments, at least some of the manifold body perforations 2834 are aligned with the manifold outlet orifice 2842. In operation, the manifold body perforations 2834 facilitate the passage of exhaust gas through the manifold body 2802 and into the manifold cavity 2832 without passing through the manifold inlet orifice 2830. This reduces the back pressure of the decomposition chamber 108. Furthermore, the exhaust gas flowing through the manifold body perforations 2834 heats the manifold body 2802, thereby mitigating the impact of the reducing agent on the manifold body 2802. By aligning at least some of the manifold body perforations 2834 with the manifold outlet orifice 2842, the exhaust gas flowing within the manifold cavity 2832 can be pushed outside the manifold outlet orifice 2842, thereby reducing the back pressure of the decomposition chamber 108 and increasing the exhaust gas flow rate (UI).

[0399] A first diversion tube flange perforation 2836 is provided on the portion of the first diversion tube flange 2804 opposite to the diversion tube cavity 2832 (e.g., positioned opposite to the first end 2806). In operation, the first diversion tube flange perforation 2836 facilitates the passage of exhaust gas (e.g., exhaust gas already flowing between the mixing assembly wall 230 and the first diversion tube flange 2804) through the first diversion tube flange 2804 and into the diversion tube cavity 2832 without passing through the diversion tube inlet hole 2830 or the diversion tube body perforation 2834. This reduces the back pressure in the decomposition chamber 108. Furthermore, the exhaust gas flowing through the first diversion tube flange perforation 2836 heats the first end 2806, thereby mitigating the impact of the reducing agent on the first end 2806. The exhaust flowing through the flange perforation 2836 of the first diversion tube can also help to divert the exhaust flowing in the diversion tube cavity 2832 toward the diversion tube outlet hole 2842, thereby reducing the back pressure of the decomposition chamber 108 and increasing the exhaust UI.

[0400] XVI. Example Decomposition Chamber with Thirteenth Example Hybrid Component

[0401] Figures 34-38 A decomposition chamber 108 and a mixing assembly 222 according to another example embodiment are shown. The decomposition chamber 108 includes a dispensing cover 300, a first channel wall 700, a second channel wall 702, a mixing assembly flow orifice 708, a first flow guide 710, a second flow guide 712, a perforation 714, a baffle 716, a third flow guide 718, and an injector coupling groove 2710 as described herein.

[0402] The decomposition chamber 108 also includes a fourth guide vane 3500 (e.g., blade, wall, baffle, distributor, etc.). The fourth guide vane 3500 is coupled to the injector coupling groove 2710 and extends toward the distribution cover wall 304 (e.g., near the baffle 716, etc.). The fourth guide vane 3500 is located between the third guide vane 718 and the housing wall 232. The fourth guide vane 3500 serves to break up turbulence between the mixing collector wall 226 and the third guide vane 718, and to guide exhaust gas and reducing agent between the second channel wall 702 and the distribution cover wall 304 toward the first channel wall 700. Furthermore, the fourth guide vane 3500 can be used to mitigate the impact of the reducing agent on the mixing collector wall 226. When the reducing agent can contact the fourth guide vane 3500, the exhaust gas flows above and below the fourth guide vane 3500. The exhaust heating of the fourth deflector 3500 potentially causes the reducing agent in contact with the fourth deflector 3500 to evaporate, and also deflects the reducing agent away from the fourth deflector 3500. In various embodiments, the fourth deflector 3500 is disposed on a plane substantially parallel to the plane on which the mixing collector wall 226 is disposed and / or the plane on which the third deflector 718 is disposed. The fourth deflector 3500 may at least partially divide the injection zone 314 in two. In some embodiments, the decomposition chamber 108 does not include the fourth deflector 3500. In various embodiments, the fourth deflector 3500 is not coupled to the second channel wall 702 or the dispensing cover wall 304.

[0403] The injector coupling groove 2710 includes an internal coupling flange 3402 and a mating coupling flange 3404. The injector coupler 234 is coupled to the mating coupling flange 3404. The internal coupling flange 3402 is separated from the mating coupling flange 3404 by a coupling wall 3406. The fourth guide vane 3500 is coupled to the internal coupling flange 3402.

[0404] The decomposition chamber 108 also includes a baffle flange assembly 3502. The baffle flange assembly 3502 is positioned between the dispensing cover wall 304, the mixing collector wall 226, the mixing component wall 230, the housing wall 232, and the first channel wall 700.

[0405] The baffle flange assembly 3502 includes a first baffle flange wall 3504. The first baffle flange wall 3504 is coupled to a mixing collector wall 226 (e.g., such that the flow of exhaust gas between the first baffle flange wall 3504 and the mixing collector wall 226 is substantially prohibited, etc.) and a housing wall 232 (e.g., such that the flow of exhaust gas between the first baffle flange wall 3504 and the housing wall 232 is substantially prohibited, etc.). The first baffle flange wall 3504 is spaced apart from the dispensing cover wall 304, allowing exhaust gas to flow along the first baffle flange wall 3504 between the first baffle flange wall 3504 and the dispensing cover wall 304.

[0406] The baffle flange assembly 3502 also includes a second baffle flange wall 3506. The second baffle flange wall 3506 is coupled to the mixing collector wall 226 (e.g., such that the flow of exhaust gas between the second baffle flange wall 3506 and the mixing collector wall 226 is substantially prohibited, etc.) and the housing wall 232 (e.g., such that the flow of exhaust gas between the second baffle flange wall 3506 and the housing wall 232 is substantially prohibited, etc.). The second baffle flange wall 3506 is spaced apart from the first channel wall 700 (e.g., near the perforation 714, etc.) such that exhaust gas can flow along the second baffle flange wall 3506 between the second baffle flange wall 3506 and the first channel wall 700. The second baffle flange wall 3506 is structurally integral with the first baffle flange wall 3504.

[0407] The baffle flange assembly 3502 also includes a third baffle flange wall 3508. The third baffle flange wall 3508 is coupled to the mixing collector wall 226 (e.g., to substantially prohibit exhaust flow between the third baffle flange wall 3508 and the mixing collector wall 226) and the housing wall 232 (e.g., to substantially prohibit exhaust flow between the third baffle flange wall 3508 and the housing wall 232). The third baffle flange wall 3508 is spaced apart from the mixing assembly wall 230, allowing exhaust flow along the third baffle flange wall 3508 between the third baffle flange wall 3508 and the mixing assembly wall 230. The third baffle flange wall 3508 is structurally integral with the first baffle flange wall 3504 and the second baffle flange wall 3506.

[0408] The second channel wall 702 includes a first portion 3509. The first portion 3509 is coupled to a mixing collector wall 226 (e.g., such that the flow of exhaust gas between the first portion 3509 and the mixing collector wall 226 is substantially prohibited), and to a housing wall 232 (e.g., such that the flow of exhaust gas between the first portion 3509 and the housing wall 232 is substantially prohibited). In various embodiments, a third guide vane 718 is coupled to the first portion 3509.

[0409] The second channel wall 702 also includes a second portion 3510. The second portion 3510 is coupled to the mixing collector wall 226 (e.g., such that the flow of exhaust gas between the second portion 3510 and the mixing collector wall 226 is substantially prohibited). Unlike the first portion 3509 of the second channel wall, the second portion 3510 is not coupled to the housing wall 232. This facilitates the flow of exhaust gas between the second portion 3510 and the housing wall 232. Thus, a portion of the exhaust gas can flow through the second channel wall 702 without initially flowing around it (e.g., between the second channel wall 702 and the first channel wall 700). This reduces the back pressure of the decomposition chamber 108. The second portion 3510 is structurally integrated with the first portion 3509. In various embodiments, a third guide vane 718 is coupled to the second portion 3510. The spraying zone 314 is located between the second section 3510 of the second channel wall and the distribution cover wall 304.

[0410] The second channel wall 702 includes a third portion 3512. The third portion 3512 is coupled to the mixing collector wall 226 (e.g., such that the flow of exhaust gas between the third portion 3512 and the mixing collector wall 226 is substantially prohibited) and the housing wall 232 (e.g., such that the flow of exhaust gas between the third portion 3512 and the housing wall 232 is substantially prohibited). The third portion 3512 is structurally integral with the second portion 3510 of the second channel wall.

[0411] The second channel wall 702 also includes a fourth portion 3514. The fourth portion 3514 is coupled to the mixing collector wall 226 (e.g., such that the flow of exhaust gas between the fourth portion 3514 and the mixing collector wall 226 is substantially prohibited). Unlike the first portion 3509 and the third portion 3512 of the second channel wall, the fourth portion 3514 is not coupled to the outer casing wall 232. This facilitates the flow of exhaust gas between the fourth portion 3514 and the outer casing wall 232. In this way, a portion of the exhaust gas can flow through the second channel wall 702 without first flowing around it (e.g., between the second channel wall 702 and the second deflector 712, etc.). This reduces the back pressure of the decomposition chamber 108. The fourth portion 3514 is structurally integral with the third portion 3512 of the second channel wall.

[0412] The decomposition chamber 108 also includes a first corner wall 3516 and a second corner wall 3518. The first corner wall 3516 is located near a first corner of the mixing assembly wall 230, and the second corner wall 3518 is located near a second corner of the mixing assembly wall 230. The first corner wall 3516 is coupled to the mixing collector wall 226 (e.g., such that the flow of exhaust gas between the first corner wall 3516 and the mixing collector wall 226 is substantially prohibited), the housing wall 232 (e.g., such that the flow of exhaust gas between the first corner wall 3516 and the housing wall 232 is substantially prohibited), and the mixing assembly wall 230 (e.g., such that the flow of exhaust gas between the first corner wall 3516 and the mixing assembly wall 230 is substantially prohibited). The first corner wall 3516 is coupled to the mixing assembly wall 230 at a first end and a second end, but is separated from the mixing assembly wall 230 between the first end and the second end. The second corner wall 3518 is coupled to the mixing collector wall 226 (e.g., to substantially prohibit the flow of exhaust gas between the second corner wall 3518 and the mixing collector wall 226), the housing wall 232 (e.g., to substantially prohibit the flow of exhaust gas between the second corner wall 3518 and the housing wall 232), and the mixing assembly wall 230 (e.g., to substantially prohibit the flow of exhaust gas between the second corner wall 3518 and the mixing assembly wall 230). The second corner wall 3518 is coupled to the mixing assembly wall 230 at a first end and a second end of the second corner wall 3518, but is separated from the mixing assembly wall 230 between the first end and the second end of the second corner wall 3518.

[0413] The first corner wall 3516 is separated from the mixing component wall 230 by a first gap distance (e.g., spaced apart from the mixing component wall 230, etc.). In some embodiments, the first gap distance is constant along the first corner wall 3516. In various embodiments, the first gap distance is less than 10 mm. The first gap distance provides thermal insulation, thereby mitigating heat transfer from the first corner wall 3516 and maintaining the first corner wall 3516 at a relatively high temperature. This relatively high temperature can mitigate the formation of reducing agent deposits and increase the desirability of the decomposition chamber 108.

[0414] The second corner wall 3518 is separated from the mixing component wall 230 by a second gap distance (e.g., spaced apart from the mixing component wall 230, etc.). In some embodiments, the second gap distance is constant along the second corner wall 3518. In various embodiments, the second gap distance is less than 10 mm. In some embodiments, the second gap distance is approximately equal to the first gap distance. In some embodiments, the second corner wall 3518 is an equivalent reflection of the first corner wall 3516. The second gap distance provides thermal insulation, thereby mitigating heat transfer from the second corner wall 3518 and maintaining the second corner wall 3518 at a relatively high temperature. This relatively high temperature can mitigate the formation of reducing agent deposits and increase the desirability of the decomposition chamber 108. The first portion 3509 of the second channel wall is coupled to the second corner wall 3518 (e.g., such that the flow of exhaust gas between the first portion 3509 of the second channel wall and the second corner wall 3518 is substantially prohibited, etc.).

[0415] In various embodiments, the decomposition chamber 108 further includes a tapered flange 3700. The tapered flange 3700 includes an annular lip 3702. The annular lip 3702 is positioned within and coupled to the mixing assembly flow orifice 708. The tapered flange 3700 is positioned between the mixing collector wall 226 and the delivery assembly housing wall 218 and is used to distribute exhaust gas from the mixing assembly flow orifice 708 onto the SCR catalyst member 216.

[0416] XVII. Example decomposition chamber with the fourteenth example hybrid component

[0417] Figure 39 An illustration is shown according to another embodiment. Figures 13-17 The decomposition chamber 108 described in the text. Figure 39 In this design, the splitter outlet orifice 1318 is trapezoidal, with the larger side positioned closer to the injection region 314 and the smaller side positioned closer to the splitter flange 1303. In this way, the width of the splitter outlet orifice 1318 gradually decreases as its distance from the injection region 314 increases. By shaping the splitter outlet orifice 1318 in this manner, a larger proportion of exhaust gas can be supplied from the splitter outlet orifice 1318 to the SCR catalyst component 216 near the injection region 314, and a smaller proportion of exhaust gas can be supplied from the splitter outlet orifice 1318 to the SCR catalyst component 216 near the splitter flange 1303. The exhaust gas supplied from the splitter flange transfer perforation 1334 can supplement the exhaust gas supplied from the splitter outlet orifice 1318 to the SCR catalyst component 216 near the splitter flange 1303, ensuring that the amount of exhaust gas supplied to each SCR catalyst component 216 is substantially the same.

[0418] XVIII. Example decomposition chamber with the fifteenth example hybrid component

[0419] Figures 40-41 According to another embodiment, in Figures 13-17 The decomposition chamber 108 described in the text. Figures 40-41 In this configuration, the main body 1302 of the diversion pipe also includes a fourth conduit 4000 (e.g., a cap, cover, etc.) and a fifth conduit 4002 (e.g., a cap, cover, etc.), and the main body 1302 of the diversion pipe does not include a third conduit 1328. The fifth conduit 4002 is adjacent to the diversion pipe flange 1303. The fourth conduit 4000 is separated from the diversion pipe flange 1303 through the fifth conduit 4002, and is separated from the first conduit 1312 through a second conduit 1320.

[0420] The second conduit 1320 abuts against and extends above the first portion 4006 of the diverter outlet orifice. Similarly, the fourth conduit 4000 abuts against and extends above the second portion 4008 of the diverter outlet orifice, and the fifth conduit 4002 abuts against and extends above the third portion 4010 of the diverter outlet orifice. The first portion 4006, the second portion 4008, and the third portion 4010 of the diverter outlet orifice together define the diverter outlet orifice 1318. Similar to the second conduit 1320, the fourth conduit 4000 and the fifth conduit 4002 each extend toward the delivery chamber 1306 to guide exhaust gas toward the mixing assembly flow orifice 1308. In some embodiments, the fourth conduit 4000 and / or the fifth conduit 4002 extend above the mixing assembly flow orifice 1308.

[0421] The first portion 4006 of the shunt outlet orifice is defined by a first outlet orifice region A1 (e.g., the region where the shunt body 1302 is removed to form the first portion 4006 of the shunt outlet orifice, the opening region of the first portion 4006 of the shunt outlet orifice, the effective region of the first portion 4006 of the shunt outlet orifice, etc.). The second portion 4008 of the shunt outlet orifice is defined by a second outlet orifice region A2 (e.g., the region where the shunt body 1302 is removed to form the second portion 4008 of the shunt outlet orifice, the opening region of the second portion 4008 of the shunt outlet orifice, the effective region of the second portion 4008 of the shunt outlet orifice, etc.). The third portion 4010 of the shunt outlet orifice is defined by a third outlet orifice region A3 (e.g., the region where the shunt body 1302 is removed to form the third portion 4010 of the shunt outlet orifice, the opening region of the third portion 4010 of the shunt outlet orifice, the effective region of the third portion 4010 of the shunt outlet orifice, etc.). In various embodiments, A1 is greater than A2, and A2 is greater than A3. This configuration results in a larger portion of the exhaust flowing through the first portion 4006 of the manifold outlet orifice than the portion flowing through the second portion 4008 of the manifold outlet orifice, and a larger portion of the exhaust flowing through the second portion 4008 of the manifold outlet orifice than the portion flowing through the second portion 4010 of the manifold outlet orifice. This splitting of the exhaust flowing from the manifold outlet orifice 1318 may be advantageous, wherein the number of SCR catalyst components 216 closest to the first portion 4006 of the manifold outlet orifice is greater than the number of SCR catalyst components 216 closest to the second portion 4008 and / or the third portion 4010 of the manifold outlet orifice.

[0422] In various embodiments, the first portion 4006, the second portion 4008, and the third portion 4010 of the diverter outlet are offset from each other along the diverter body 1302 (e.g., angularly offset along the circumference of the diverter body 1302). This offset results in each of the three portions being positioned differently relative to the mixing collector wall 226. For example, the first portion 4006 may be positioned such that 80% or more of the first portion 4006 is located between the mixing collector wall 226 and the housing wall 232, and 20% or less of the first portion 4006 is located between the mixing collector wall 226 and the transfer assembly housing wall 218. The second portion 4008 of the diverter outlet orifice can be positioned such that 50% or more of the second portion 4008 is located between the mixing collector wall 226 and the housing wall 232, and 50% or less of the second portion 4008 is located between the mixing collector wall 226 and the transfer assembly housing wall 218. The third portion 4010 of the diverter outlet orifice can be positioned such that 20% or more of the third portion 4010 is located between the mixing collector wall 226 and the housing wall 232, and 80% or less of the third portion 4010 is located between the mixing collector wall 226 and the transfer assembly housing wall 218.

[0423] In various embodiments, the second conduit 1320, the fourth conduit 4000, and the fifth conduit 4002 are offset from each other along the branch pipe body 1302 (e.g., angularly offset along the circumference of the branch pipe body 1302). This offset results in each of the third conduit being positioned differently relative to the mixing collector wall 226. For example, the second conduit 1320 may be positioned such that 90% or more of the second conduit 1320 lies between the mixing collector wall 226 and the housing wall 232, and 10% or less of the second conduit 1320 lies between the mixing collector wall 226 and the transfer assembly housing wall 218. The fourth conduit 4000 may be positioned such that 80% or more of the fourth conduit 4000 lies between the mixing collector wall 226 and the housing wall 232, and 20% or less of the fourth conduit 4000 lies between the mixing collector wall 226 and the transfer assembly housing wall 218. The fifth conduit 4002 may be positioned such that 60% or more of the fifth conduit 4002 is located between the mixing collector wall 226 and the housing wall 232, and 40% or less of the fifth conduit 4002 is located between the mixing collector wall 226 and the conveying assembly housing wall 218.

[0424] By shaping the splitter outlet orifice 1318 in this manner, a larger proportion of exhaust gas can be supplied from the splitter outlet orifice 1318 to the SCR catalyst component 216 near the injection region 314, and a smaller proportion of exhaust gas can be supplied from the splitter outlet orifice 1318 to the SCR catalyst component 216 near the splitter flange 1303. The exhaust gas supplied from the splitter flange transfer perforation 1334 can supplement the exhaust gas supplied from the splitter outlet orifice 1318 to the SCR catalyst component 216 near the splitter flange 1303, so that the amount of exhaust gas supplied to each SCR catalyst component 216 is substantially the same.

[0425] XIX. Example decomposition chamber with the sixteenth example hybrid component

[0426] Figures 42-43 An illustration is shown according to another embodiment. Figures 13-17 The decomposition chamber 108 described in the text. Figures 42-43 In this configuration, the main body 1302 of the splitter pipe does not include the third conduit 1328. The splitter pipe outlet orifice 1318 is trapezoidal, with the larger side positioned near the injection region 314 and the smaller side positioned near the splitter pipe flange 1303. In this way, the width of the splitter pipe outlet orifice 1318 gradually decreases as its distance from the injection region 314 increases. By shaping the splitter pipe outlet orifice 1318 in this manner, a larger proportion of exhaust gas can be supplied from the splitter pipe outlet orifice 1318 to the SCR catalyst component 216 near the injection region 314, and a smaller proportion of exhaust gas can be supplied from the splitter pipe outlet orifice 1318 to the SCR catalyst component 216 near the splitter pipe flange 1303. The exhaust gas supplied from the transfer perforation 1334 of the splitter pipe flange can supplement the exhaust gas supplied from the splitter pipe outlet orifice 1318 to the SCR catalyst component 216 near the splitter pipe flange 1303, such that the amount of exhaust gas supplied to each SCR catalyst component 216 is substantially the same.

[0427] XX. Example decomposition chamber with the seventeenth example hybrid component

[0428] Figure 44 A decomposition chamber 108 and a mixing assembly 222 according to another example embodiment are shown. The decomposition chamber 108 includes the dispensing cap 300 described herein. The decomposition chamber 108 also includes a manifold 4400 (e.g., a filling chamber, etc.). As explained in more detail herein, the manifold 4400 is configured to facilitate the mixing of exhaust gas and reductant and to supply exhaust gas and reductant to the SCR catalyst assembly 216.

[0429] The mixing collector 224 also includes a manifold wall 4402 (e.g., a panel, body, etc.). The manifold wall 4402 is coupled to the mixing collector wall 226 and the housing wall 232. As described herein, the mixing collector 224 also includes a first collecting wall 308 and a second collecting wall 310. The first collecting wall 308 and the second collecting wall 310 are each coupled to the manifold wall 4402. Thus, a collecting cavity 306 is defined between the dispensing cover wall 304, the mixing collector wall 226, the mixing assembly wall 230, the housing wall 232, the first collecting wall 308, the second collecting wall 310, and the manifold wall 4402.

[0430] Manifold wall 4402 includes manifold wall aperture 4404 (e.g., hole, opening, etc.). Manifold wall aperture 4404 facilitates the flow of exhaust gas and reducing agent through manifold wall 4402. Manifold 4400 includes manifold body 4406 (e.g., frame, housing, casing, etc.). Manifold body 4406 is disposed within manifold wall aperture 4404 and coupled to manifold wall 4402 around manifold wall aperture 4404. In some embodiments, manifold body 4406 is stadium-shaped.

[0431] In various embodiments, the manifold wall orifice 4404 is positioned such that the manifold body 4406 is separated from the mixing collector wall 226, the outer casing wall 232, the first collecting wall 308, and the second collecting wall 310 around the entire manifold body 4406. Thus, exhaust gas can flow into or around the manifold body 4406. Flowing around the manifold body 4406 increases the temperature of the manifold body 4406, thereby reducing the formation of deposits on the manifold body 4406.

[0432] Manifold body 4406 includes manifold body inlet 4408 (e.g., orifice, cavity, opening, etc.). Manifold body inlet 4408 receives exhaust gas (e.g., from distributor cap 300, etc.) and supplies exhaust gas into manifold body 4406. Manifold body 4406 includes manifold body outlet 4410 (e.g., orifice, cavity, opening, etc.). Manifold body outlet 4410 receives exhaust gas (e.g., from within manifold body 4406, etc.) and supplies exhaust gas out of manifold body 4406 toward SCR catalyst member 216.

[0433] The manifold body 4406 also includes an upstream portion 4412. The upstream portion 4412 is located upstream of the manifold wall 4402 and is separated from the mixing collector wall orifice 227 by the manifold wall 4402. The manifold body 4406 also includes a downstream portion 4414. The downstream portion 4414 is located downstream of the manifold wall 4402 and is separated from the dispensing cap 300 by the manifold wall 4402. The manifold wall 4402 divides the manifold body 4406 into the upstream portion 4412 and the downstream portion 4414. In various embodiments, the upstream portion 4412 is larger than the downstream portion 4414. For example, the distance between the leading edge of the upstream portion 4412 and the manifold wall 4402 may be greater than the distance between the trailing edge of the downstream portion 4414 and the manifold wall 4402.

[0434] The manifold body 4406 also includes a manifold body mixing assembly housing hole 4416 (e.g., a hole, opening, etc.). The manifold body mixing assembly housing hole 4416 is disposed in the upstream portion 4412 of the manifold body and faces the mixing collector wall 226. The manifold body mixing assembly housing hole 4416 facilitates the flow of exhaust gas into the manifold body 4406 independently of the manifold body inlet 4408. Thus, exhaust gas flowing between the upstream portion 4412 of the manifold body and the mixing collector wall 226 (e.g., exhaust gas that does not flow into the manifold body inlet 4408) can flow into the manifold body 4406 via the manifold body mixing assembly housing hole 4416. In this way, the manifold body mixing assembly housing hole 4416 can reduce the back pressure of the decomposition chamber 108.

[0435] The manifold body 4406 also includes a manifold body housing aperture 4418 (e.g., a hole, opening, etc.). The manifold body housing aperture 4418 is disposed in the upstream portion 4412 of the manifold body and faces the housing wall 232. In various embodiments, the diameter of the manifold body housing aperture 4418 is equal to the diameter of the manifold body mixing assembly housing aperture 4416.

[0436] Unlike in other embodiments, the injector coupler 234 is coupled to the mixing assembly wall 230, but rather to the housing wall 232. The injector coupler 234 is aligned with the manifold body housing aperture 4418, such that reducing agent from the injector 120 and / or the dispensing module 112 is supplied to the manifold body 4406 via the manifold body housing aperture 4418.

[0437] The manifold body mixing assembly housing bore 4416 can be aligned with the manifold body outer housing bore 4418. In this way, the reducing agent supplied from the injector 120 and / or dispensing module 112 can be supplied toward the manifold body mixing assembly housing bore 4416. Exhaust gas entering the manifold body 4406 via the manifold body mixing assembly housing bore 4416 can (e.g., by flowing against the reducing agent supplied by the injector 120 and / or dispensing module 112, etc.) reduce the formation of deposits on the manifold body 4406.

[0438] In some embodiments, exhaust gas does not flow into the manifold body 4406 via the manifold body housing orifice 4418. Instead, only the reducing agent flows into the manifold body 4406 via the manifold body housing orifice 4418. In these embodiments, the injector 120 and / or the dispensing module 112 may be coupled to the upstream portion 4412 of the manifold body around the manifold body housing orifice 4418. Exhaust gas flowing into the manifold body 4406 via the manifold body mixing assembly housing orifice 4416 may mitigate deposit formation on the manifold body 4406.

[0439] In some embodiments, exhaust gas flows into the manifold body 4406 via a manifold body housing orifice 4418, and a reducing agent flows into the manifold body 4406 via the manifold body housing orifice 4418. In these embodiments, the manifold body housing orifice 4418 facilitates the flow of exhaust gas into the manifold body 4406 independently of the manifold body inlet 4408. Thus, exhaust gas flowing between the upstream portion 4412 of the manifold body and the housing wall 232 (e.g., exhaust gas that does not flow into the manifold body inlet 4408 or the manifold body housing orifice 4418, etc.) can flow into the manifold body 4406 via the manifold body housing orifice 4418. In this way, the manifold body housing orifice 4418 can reduce the back pressure of the decomposition chamber 108. The exhaust gas flowing into the manifold body 4406 via the manifold body housing orifice 4418 can assist (e.g., push, guide, etc.) the flow of the reducing agent into the manifold body 4406 via the manifold body housing orifice 4418. For example, the decomposition chamber 108 may also include an exhaust auxiliary guide (e.g., a cone, etc.) coupled to the upstream portion 4412 of the manifold body around the manifold body housing hole 4418, and the exhaust auxiliary guide includes holes (e.g., perforations, openings, louvers, etc.) that facilitate exhaust flow into the exhaust auxiliary guide to push the reducing agent into the manifold body 4406.

[0440] The decomposition chamber 108 also includes a converging flange 4420. The converging flange 4420 is coupled to the housing body 236 and / or the mixing collector wall 226. The converging flange extends around at least a portion of the mixing collector wall orifice 227 and is configured to guide exhaust gas from the manifold body outlet 4410 to the SCR catalyst member 216. The converging flange 4420 is rounded and / or tapered away from the housing body 236 and toward the SCR catalyst member 216. This mitigates the formation of deposits downstream of the manifold body outlet 4410 and upstream of the SCR catalyst member 216 (e.g., on the housing body 236).

[0441] XXI. Example decomposition chamber with the eighteenth example hybrid component

[0442] Figure 45 A decomposition chamber 108 and a mixing assembly 222 according to another example embodiment are shown. The decomposition chamber 108 includes the distribution cap 300 described herein. The decomposition chamber 108 also includes a diverter 4500. The diverter 4500 may be similar to, for example, the diverter 2800 described previously. The diverter 4500 includes a first end 4502 that receives all exhaust gases and a second end 4504 that supplies all exhaust gases to the SCR catalyst assembly 216.

[0443] XXII. Example decomposition chamber with the nineteenth example hybrid component

[0444] Figure 46 and Figure 47 A disintegration chamber 108 and a mixing assembly 222 according to another example embodiment are shown. The disintegration chamber 108 includes the dispensing cap 300 described herein. The disintegration chamber 108 also includes a diversion conduit 4600. The diversion conduit 4600 may be similar to, for example, the diversion conduit 2800 described above. For example, the diversion conduit 4600 may also include a diversion conduit wall 2820 and / or a diversion conduit guide 2822.

[0445] The diverter 4600 includes a diverter body 4602 (e.g., a frame, housing, etc.). The diverter body 4602 is generally cylindrical, elliptical, or rectangular. In more than one embodiment, the diverter body 4602 is coupled to a mixing assembly wall 230 (e.g., such that exhaust flow between the diverter body 4602 and the mixing assembly wall 230 is substantially prohibited, etc.) and / or a mixing collector wall 226 (e.g., such that exhaust flow between the diverter body 4602 and the mixing collector wall 226 is substantially prohibited, etc.). In various embodiments, the diverter body 4602 is separated from the housing wall 232 (e.g., such that exhaust flow between the diverter body 4602 and the housing wall 232 is facilitated, etc.).

[0446] The decomposition chamber 108 is centered on the decomposition chamber axis 4604 (e.g., a central axis). Exhaust gas flowing within the decomposition chamber 108 can travel within the decomposition chamber 108 in a direction approximately parallel to the decomposition chamber axis 4604 (e.g., within 5% of the distance from parallel to the decomposition chamber axis 4604, parallel to the decomposition chamber axis 4604, etc.). The decomposition chamber axis 4604 extends through the connecting component housing wall 212, the housing body 236, the conveying component housing wall 218, the mixing collector wall 226, and the outer housing wall 232.

[0447] The dispensing cover 300 is centered on a dispensing cover axis 4606 (e.g., a central axis). The dispensing cover axis 4606 extends through the connecting component housing wall 212, the housing body 236, the conveying component housing wall 218, the mixing collector wall 226, and the outer housing wall 232. The dispensing cover axis 4606 and the decomposition chamber axis 4604 extend along the decomposition chamber plane 4608. The decomposition chamber plane 4608 divides the decomposition chamber 108 in two.

[0448] The manifold body 4602 is centered on the manifold body axis 4610 (e.g., a central axis). Exhaust gas flowing within the manifold body 4602 can travel within the manifold body 4602 in a direction approximately parallel to the manifold body axis 4610. In various embodiments, the manifold body axis 4610 extends through the mixing assembly wall 230. In some embodiments, the manifold body axis 4610 extends through the housing body 236.

[0449] The main axis 4610 of the manifold intersects the decomposition chamber plane 4608. The main axis 4610 and the decomposition chamber plane 4608 extend along the manifold plane 4612. In various embodiments, at least one of the decomposition chamber axis 4604 or the distribution cap axis 4606 is orthogonal to the manifold plane 4612. When measured on the manifold plane 4612, the main axis 4610 of the manifold and the decomposition chamber plane 4608 are separated by an angular distance λ. In various embodiments, the angular distance λ is not equal to 90 degrees (°). In various embodiments, the angular distance λ is equal to an angle between approximately 5° and 30° (inclusive) (e.g., 4.5°, 5°, 10°, 15°, 20°, 25°, 30°, 32°, etc.).

[0450] exist Figure 48 and Figure 49 The shunt 4600 is shown in more detail below. The shunt body 4602 can be positioned within a shunt coupler hole 4614 (e.g., a hole, opening, etc.) in the mixing collector wall 226 (e.g., the mixing collector wall 226 is arranged along a plane that divides the shunt body 4602 in two, etc.). The shunt body 4602 can be coupled to the mixing collector wall 226 around the shunt coupler hole 4614.

[0451] The splitter 4600 also includes a first splitter flange 4616 (e.g., a wall, a splitter, etc.). The first splitter flange 4616 is coupled (e.g., a first portion of the first splitter flange 4616 is coupled) to a first end 4618 of the splitter body 4602 (e.g., such that the flow of exhaust gas between the first end 4618 and the first splitter flange 4616 is substantially prohibited, etc.). The first splitter flange 4616 is also coupled to the mixing collector wall 226 (e.g., such that the flow of exhaust gas between the mixing collector wall 226 and the first splitter flange 4616 is substantially prohibited, etc.).

[0452] In various embodiments, the first shunt flange 4616 is coupled to the mixing collector wall 226 along the shunt coupler hole 4614 (e.g., along one side of the shunt coupler hole 4614, etc.). In various embodiments, the first shunt flange 4616 is not positioned within the shunt coupler hole 4614.

[0453] The splitter 4600 also includes a second splitter flange 4619 (e.g., a wall, a splitter, etc.). The second splitter flange 4619 is coupled (e.g., a first portion of the second splitter flange 4619 is coupled) to a second end 4620 of the splitter body 4602 (e.g., such that the flow of exhaust gas between the second end 4620 and the second splitter flange 4619 is substantially prohibited, etc.). The second end 4620 is opposite to the first end 4618. The second splitter flange 4619 is also coupled to a mixing collector wall 226 (e.g., such that the flow of exhaust gas between the mixing collector wall 226 and the second splitter flange 4619 is substantially prohibited, etc.).

[0454] The first end 4618 may include a tab configured to be received in a groove within the first branch flange 4616 to facilitate coupling between the branch body 4602 and the first branch flange 4616. The second end 4620 may include a tab configured to be received in a groove within the second branch flange 4619 to facilitate coupling between the branch body 4602 and the second branch flange 4619.

[0455] In various embodiments, the second shunt flange 4619 is coupled to the mixing collector wall 226 along the shunt coupler hole 4614 (e.g., along one side of the shunt coupler hole 4614). In various embodiments, the second shunt flange 4619 is not positioned within the shunt coupler hole 4614.

[0456] The diverter 4600 also includes a diverter collector 4621 (e.g., a spoon-shaped piece, a panel, etc.). The diverter collector 4621 is coupled to the mixing collector wall 226 (e.g., such that the flow of exhaust gas between the mixing collector wall 226 and the diverter collector 4621 is substantially prohibited, etc.), such that a portion of the diverter body 4602 is positioned within and / or adjacent to the diverter collector 4621.

[0457] In various embodiments, the shunt collector 4621 is coupled to the mixing collector wall 226 along the shunt coupler hole 4614 (e.g., along one side of the shunt coupler hole 4614). In various embodiments, the shunt collector 4621 is not positioned within the shunt coupler hole 4614.

[0458] The shunt tube 4600 establishes a collecting cavity 4622. The collecting cavity 4622 is defined between the mixing collector wall 226, the dispensing cover wall 304, the outer shell wall 232, the mixing component wall 230, the shunt tube body 4602, the first shunt tube flange 4616, the shunt tube end plate 2812, and the second shunt tube flange 4619.

[0459] After the exhaust flows out of the distribution cap 300 (e.g., via the distribution cap hole 302), the exhaust enters the diversion pipe body 4602 in one of a variety of different ways.

[0460] First, exhaust gas can enter the splitter body 4602 through a splitter inlet hole 4623 (e.g., a hole, opening, etc.) formed in the splitter body 4602. After flowing through the splitter inlet hole 4623, the exhaust gas enters the splitter cavity 4624 defined by the splitter body 4602.

[0461] Second, exhaust gas can enter the splitter body 4602 via a splitter body perforation 4626 (e.g., hole, aperture, opening, etc.) formed in the splitter body 4602. The splitter body 4602 includes more than one splitter body perforation 4626. According to various embodiments, each splitter body perforation 4626 is positioned between the splitter inlet hole 4623 and the first splitter flange 4616. After flowing through the splitter body perforation 4626, exhaust gas enters the splitter cavity 4624.

[0462] Third, exhaust gas can enter the main body 4602 of the diverter pipe via a first diverter flange perforation 4628 (e.g., hole, opening, etc.). The first diverter flange 4616 includes more than one first diverter flange perforation 4628. According to various embodiments, each first diverter flange perforation 4628 is at least partially external to the first end 4618 (e.g., surrounding, intersecting, encircling, etc.). After flowing through the first diverter flange perforation 4628, exhaust gas enters the diverter cavity 4624.

[0463] Fourth, exhaust gas can enter the main body 4602 of the splitter pipe through a second splitter pipe flange hole (e.g., a hole, opening, etc.). The second splitter pipe flange hole is at least partially external to the second end 4620 (e.g., surrounding, intersecting, encircling, etc.). After flowing through the second splitter pipe flange hole, the exhaust gas enters the splitter pipe cavity 4624.

[0464] The manifold inlet orifice 4623 is sized and positioned such that the exhaust gas supplied to the manifold cavity 4624 is greater than the exhaust gas supplied to the manifold body orifice 4626, the first manifold flange orifice 4628, and the second manifold flange orifice combined. At least a portion of the manifold inlet orifice 4623 is located near the housing wall 232. Thus, the exhaust gas flowing through the manifold inlet orifice 4623 enters the manifold cavity 4624 radially (e.g., along a tangent to the manifold body 4602, along a line parallel to and deviating from the tangent to the manifold body 4602, etc.). This radial entry causes the exhaust gas to form vortices within the manifold cavity 4624. The vortices applied by the manifold inlet orifice 4623 promote mixing of the exhaust gas and the reducing agent within the manifold cavity 4624 and ensure relatively high shear on the manifold body 4602, thereby mitigating the impact of the reducing agent on the manifold body 4602.

[0465] The mixing assembly wall 230 includes an injector coupler 234. The splitter 4600 is positioned such that the injector coupler 234 is aligned with and spaced apart from the second splitter flange 4619. Thus, the injection region 314 is located within the splitter cavity 4624 and the collecting cavity 4622. Consequently, exhaust gas flowing through the second splitter flange orifice is propelled into the splitter cavity 4624 by the reducing agent supplied by the dispensing module 112.

[0466] In various embodiments, the diverter body 4602 includes a guard 4630 (e.g., a wall, a protrusion, etc.). The guard 4630 abuts against the diverter inlet orifice 4623 and extends into the diverter cavity 4624 (e.g., the guard 4630 is bent inward relative to the diverter body 4602, etc.). The guard 4630 serves to mitigate non-radial flow of exhaust gas into the diverter cavity 4624 via the diverter inlet orifice 4623.

[0467] Exhaust gas exits the splitter chamber 4624 via the splitter outlet orifice 4632 and flows toward the SCR catalyst component 216. The exhaust gas exiting the splitter outlet orifice 4632 flows between the splitter body 4602, the first splitter flange 4616, and the second splitter flange 4619 (e.g., into the groove formed by the splitter body 4602, the first splitter flange 4616, and the second splitter flange 4619 in the mixing collector wall 226). The splitter body 4602, the first splitter flange 4616, and the second splitter flange 4619 form a volume within which the exhaust gas exiting the splitter outlet orifice 4632 can expand, thereby minimizing the back pressure of the decomposition chamber 108, promoting an increase in the reductant and exhaust gas UI, and promoting an increase in the exhaust gas flow distribution index.

[0468] In some embodiments, the splitter body 4602, the first splitter flange 4616 and the second splitter flange 4619 are differently shaped, sized or otherwise configured to direct exhaust gas toward the SCR catalyst assembly 216 and / or (e.g., for targeted distribution, etc.) distribute it among the SCR catalyst assemblies 216.

[0469] The diverter collector 4621 includes a first diverter collector blade 4634 (e.g., a guide). The first diverter collector blade 4634 is disposed near a first end 4618. The first diverter collector blade 4634 is configured to guide exhaust gas from the diverter collector cavity 4636 defined by the diverter collector 4621. Specifically, the first diverter collector blade 4634 is configured to guide exhaust gas away from the first end 4618.

[0470] The diverter collector 4621 also includes a second diverter collector blade 4638 (e.g., a guide). The second diverter collector blade 4638 is disposed near the second end 4620. The second diverter collector blade 4638 is configured to guide exhaust gas from the diverter collector cavity 4636. Specifically, the second diverter collector blade 4638 is configured to guide exhaust gas away from the second end 4620.

[0471] The outlet port 4632 of the manifold is positioned close to the first end 4618. This substantially prevents straight flow of exhaust gas from the inlet port 4623 to the outlet port 4632 (e.g., no vortex flow, etc.), ensuring that virtually all exhaust gas leaving the outlet port 4632 is first vortexed by the manifold body 4602. Furthermore, since the inlet port 4623 is positioned close to the second end 4620 and the outlet port 4632 is positioned close to the first end 4618, the distance between the inlet port 4623 and the outlet port 4632 can be maximized, thereby increasing the amount of time the exhaust gas remains within the manifold cavity 4624, which correspondingly increases the mixing and UI of the reducing agent in the exhaust gas.

[0472] The manifold body perforation 4626 is disposed on the upstream surface of the manifold body 4602 (e.g., adjacent to the manifold cavity 4622, etc.). In some embodiments, at least some of the manifold body perforations 4626 are aligned with the manifold outlet orifice 4632. In operation, the manifold body perforations 4626 facilitate the passage of exhaust gas through the manifold body 4602 and into the manifold cavity 4624 without passing through the manifold inlet orifice 4623. Thus, the back pressure of the decomposition chamber 108 can be reduced. Furthermore, the exhaust gas flowing through the manifold body perforations 4626 acts to heat the manifold body 4602, thereby mitigating the impact of the reducing agent on the manifold body 4602. By aligning at least some of the manifold body perforations 4626 with the manifold outlet orifice 4632, the exhaust gas flowing within the manifold cavity 4624 can be pushed outside the manifold outlet orifice 4632, thereby reducing the back pressure of the decomposition chamber 108 and increasing the exhaust gas flow rate (UI).

[0473] A first diversion tube flange perforation 4628 is provided on the portion of the first diversion tube flange 4616 opposite to the diversion tube cavity 4624 (e.g., positioned opposite to the first end 4618). In operation, the first diversion tube flange perforation 4628 facilitates the passage of exhaust gas (e.g., exhaust gas already flowing between the mixing assembly wall 230 and the first diversion tube flange 4616) through the first diversion tube flange 4616 and into the diversion tube cavity 4624 without passing through the diversion tube inlet hole 4623 or the diversion tube body perforation 4626. This reduces the back pressure of the decomposition chamber 108. Furthermore, the exhaust gas flowing through the first diversion tube flange perforation 4628 heats the first end 4618, thereby mitigating the impact of the reducing agent on the first end 4618. The exhaust flowing through the flange perforation 4628 of the first diversion tube can also help to redirect the exhaust flowing in the diversion tube cavity 4624 toward the diversion tube outlet hole 4632, thereby reducing the back pressure of the decomposition chamber 108 and increasing the exhaust UI.

[0474] XXIII. Example decomposition chamber with twentieth example hybrid component

[0475] Figure 51 and Figure 52 A diverter 5100 for a decomposition chamber 108 according to various embodiments is shown. The diverter 5100 may be implemented in the decomposition chamber 108 in place of any diverter described above, such as diverter 800, diverter 1300, diverter 2800, diverter 4500 or diverter 4600.

[0476] The diverter 5100 includes a diverter body 5102 (e.g., a frame, housing, etc.). The diverter body 5102 is generally cylindrical, elliptical, or rectangular. In various embodiments, the diverter body 5102 is coupled to a mixing assembly wall 230 (e.g., such that exhaust flow between the diverter body 5102 and the mixing assembly wall 230 is substantially prohibited, etc.) and / or a mixing collector wall 226 (e.g., such that exhaust flow between the diverter body 5102 and the mixing collector wall 226 is substantially prohibited, etc.). In various embodiments, the diverter body 5102 is separated from the housing wall 232 (e.g., such that exhaust flow between the diverter body 5102 and the housing wall 232 is facilitated).

[0477] The shunt body 5102 is coupled to the mixing collector wall 226 around a shunt coupler hole 5103 (e.g., a hole, opening, etc.) in the mixing collector wall 226. In some embodiments, the shunt body 5102 is positioned within the shunt coupler hole 5103 (e.g., the mixing collector wall 226 is disposed along a plane that bisects the shunt body 5102, etc.). In other embodiments, the shunt body 5102 faces the shunt coupler hole 5103.

[0478] The splitter 5100 also includes a first splitter flange 5104 (e.g., a wall, a splitter, etc.). The first splitter flange 5104 is coupled (e.g., a first portion of the first splitter flange 5104 is coupled) to a first end 5106 of the splitter body 5102 (e.g., such that the flow of exhaust gas between the first end 5106 and the first splitter flange 5104 is substantially prohibited, etc.). The first splitter flange 5104 is also coupled to the mixing collector wall 226 (e.g., such that the flow of exhaust gas between the mixing collector wall 226 and the first splitter flange 5104 is substantially prohibited, etc.).

[0479] In various embodiments, the first shunt flange 5104 is coupled to the mixing collector wall 226 along the shunt coupler hole 5103 (e.g., along one side of the shunt coupler hole 5103). In various embodiments, the first shunt flange 5104 is not positioned within the shunt coupler hole 5103.

[0480] In some embodiments, the manifold 5100 further includes a cover (e.g., a panel, wall, manifold, etc.). The cover is coupled to the first end 5106 (e.g., to substantially prohibit the flow of exhaust gas between the first end 5106 and the cover 5108, etc.). The cover is also coupled to the first manifold flange 5104 (e.g., to substantially prohibit the flow of exhaust gas between the first manifold flange 5104 and the cover, etc.).

[0481] The manifold 5100 also includes a manifold panel 5110 (e.g., a wall, a manifold connector, etc.). The manifold panel 5110 is coupled to the manifold body 5102 (e.g., to substantially prohibit the flow of exhaust gas between the manifold body 5102 and the manifold panel 5110, etc.). The manifold panel 5110 is also coupled to a first manifold flange 5104 (e.g., to substantially prohibit the flow of exhaust gas between the first manifold flange 5104 and the manifold panel 5110, etc.).

[0482] The manifold 5100 also includes a manifold end plate 5112 (e.g., a panel, wall, manifold, etc.). The manifold end plate 5112 is coupled to the manifold panel 5110 (e.g., to substantially prohibit exhaust flow between the manifold panel 5110 and the manifold end plate 5112, etc.). In various embodiments, the edge between the manifold panel 5110 and the manifold end plate 5112 is rounded. This reduces the backflow area.

[0483] The manifold end plate 5112 is also coupled to the first manifold flange 5104 (e.g., to substantially prohibit the flow of exhaust gas between the first manifold flange 5104 and the manifold end plate 5112). In various embodiments, the edge between the manifold end plate 5112 and the first manifold flange 5104 is rounded. This reduces the recirculation zone.

[0484] The diverter end plate 5112 is also coupled to the mixing collector wall 226 (e.g., to substantially prohibit exhaust flow between the mixing collector wall 226 and the diverter end plate 5112, etc.). In various embodiments, the edge between the diverter end plate 5112 and the mixing collector wall 226 is rounded. This reduces the recirculation zone.

[0485] In various embodiments, the shunt end plate 5112 is disposed along a first plane, and the shunt panel 5110 is disposed along a second plane, the second plane being separated from the first plane by an angular distance not equal to 90°. In various embodiments, the angular distance is equal to an angle between approximately 20° and 70° (inclusive) (e.g., 19°, 20°, 21°, 30°, 40°, 45°, 50°, 60°, 67°, 70°, 73°, etc.). In other embodiments, the angular distance is approximately 90°.

[0486] In various embodiments, the shunt end plate 5112 is coupled to the mixing collector wall 226 along the shunt coupler hole 5103 (e.g., along one side of the shunt coupler hole 5103). In various embodiments, the shunt end plate 5112 is not positioned within the shunt coupler hole 5103.

[0487] The splitter 5100 also includes a second splitter flange 5114 (e.g., a wall, a splitter, etc.). The second splitter flange 5114 is coupled (e.g., a first portion of the second splitter flange 5114 is coupled) to a second end 5116 of the splitter body 5102 (e.g., such that the flow of exhaust gas between the second end 5116 and the second splitter flange 5114 is substantially prohibited, etc.). The second end 5116 is opposite to the first end 5106.

[0488] The second manifold flange 5114 is also coupled to the manifold panel 5110 (e.g., to substantially prohibit exhaust flow between the manifold panel 5110 and the second manifold flange 5114). In various embodiments, the edge between the manifold panel 5110 and the second manifold flange 5114 is rounded. This reduces the recirculation area.

[0489] The second diverter flange 5114 is also coupled to the mixing collector wall 226 (e.g., to substantially prohibit exhaust flow between the mixing collector wall 226 and the second diverter flange 5114). In various embodiments, the edge between the mixing collector wall 226 and the second diverter flange 5114 is rounded. This reduces the recirculation zone.

[0490] The first end 5106 may include a tab configured to be received in a groove within the first branch pipe flange 5104 to facilitate coupling between the branch pipe body 5102 and the first branch pipe flange 5104. The second end 5116 may include a tab configured to be received in a groove within the second branch pipe flange 5114 to facilitate coupling between the branch pipe body 5102 and the second branch pipe flange 5114.

[0491] In various embodiments, the second shunt flange 5114 is coupled to the mixing collector wall 226 along the shunt coupler hole 5103 (e.g., along one side of the shunt coupler hole 5103). In various embodiments, the second shunt flange 5114 is not positioned within the shunt coupler hole 5103.

[0492] The diverter 5100 also includes a diverter collector 5118 (e.g., a spoon, panel, etc.). The diverter collector 5118 is coupled to the mixing collector wall 226 (e.g., to substantially prohibit the flow of exhaust gas between the mixing collector wall 226 and the diverter collector 5118, etc.). In some embodiments, the diverter collector 5118 is coupled to the mixing collector wall 226 such that a portion of the diverter body 5102 is positioned within and / or adjacent to the diverter collector 5118.

[0493] In various embodiments, the shunt collector 5118 is coupled to the mixing collector wall 226 along the shunt coupler hole 5103 (e.g., along one side of the shunt coupler hole 5103). In various embodiments, the shunt collector 5118 is not positioned within the shunt coupler hole 5103.

[0494] The manifold 5100 also includes a manifold manifold wall 5120 (e.g., a flange, a manifold connector, etc.). The manifold manifold wall 5120 is coupled to the manifold body 5102 (e.g., to substantially prohibit exhaust flow between the manifold manifold wall 5120 and the manifold body 5102, etc.). The manifold manifold wall 5120 is also coupled to the manifold collector 5118 (e.g., to substantially prohibit exhaust flow between the manifold manifold wall 5120 and the manifold collector 5118, etc.). The manifold manifold wall 5120 may be positioned within the manifold coupler orifice 5103.

[0495] In various embodiments, the diverter 5100 further includes a diverter guide 5122 (e.g., a spoon-shaped member, a blade, etc.). The diverter guide 5122 is configured to guide exhaust gas flowing out of the diverter 5100 downstream. The diverter guide 5122 includes a diverter guide wall 5124 (e.g., a flange, a panel, etc.). The diverter guide wall 5124 is coupled to the diverter branch wall 5120 (e.g., such that exhaust gas flow between the diverter guide wall 5124 and the diverter branch wall 5120 is substantially prohibited, etc.). In various embodiments, the diverter guide wall 5124 is additionally coupled to the diverter body 5102 (e.g., such that exhaust gas flow between the diverter guide wall 5124 and the diverter body 5102 is substantially prohibited, etc.). The diverter guide wall 5124 may be positioned within a diverter coupler orifice 5103. In some embodiments, the diverter guide 5122 includes more than one diverter guide wall 5124, allowing exhaust gas to flow between adjacent diverter guide walls 5124. By including more than one diverter guide wall 5124, the diverter 5100 can provide increased control over exhaust gas flow.

[0496] In various embodiments, the manifold guide 5122 further includes a manifold guide wall 5126 (e.g., a flange, panel, etc.). The manifold guide wall 5126 is coupled to the manifold guide wall 5124 (e.g., to substantially prohibit exhaust flow between the manifold guide wall 5124 and the manifold guide wall 5126, etc.). The manifold guide wall 5126 may be positioned within the manifold coupler orifice 5103. In some embodiments, the manifold guide 5122 does not include the manifold guide wall 5126. In some embodiments, the manifold 5100 does not include the manifold guide 5122.

[0497] The diverter 5100 establishes a collection chamber. The collection chamber is defined between the mixing collector wall 226, the dispensing cover wall 304, the outer shell wall 232, the mixing component wall 230, the diverter body 5102, the first diverter flange 5104, the diverter panel 5110, the diverter end plate 5112, and the second diverter flange 5114.

[0498] After the exhaust flows out of the distribution cap 300 (for example, via the distribution cap hole 302), the exhaust enters the diversion pipe body 5102 in one of a variety of different ways.

[0499] First, exhaust gas can enter the splitter body 5102 via a splitter inlet hole 5130 (e.g., a hole, opening, etc.) formed in the splitter body 5102. The splitter inlet hole 5130 is located between the housing wall 232 and the point where the splitter panel 5110 is coupled to the splitter body 5102. After flowing through the splitter inlet hole 5130, the exhaust gas enters the splitter cavity 5132 defined by the splitter body 5102.

[0500] Second, exhaust gas can enter the main body 5102 of the diverter pipe via a first diverter flange opening 5136 (e.g., a hole, aperture, opening, etc.). The first diverter flange 5104 includes more than one first diverter flange opening 5136. According to various embodiments, each first diverter flange opening 5136 is at least partially external to the first end 5106 (e.g., surrounding, intersecting, encircling, etc.). After flowing through the first diverter flange opening 5136, exhaust gas enters the diverter cavity 5132.

[0501] Furthermore, (e.g., via injector 120, via dispensing module 112, etc.) the reducing agent can enter the main body 5102 of the diverter tube via a second diverter tube flange hole 5138 (e.g., a hole, opening, etc.). The second diverter tube flange hole 5138 is at least partially external to the second end 5116 (e.g., surrounding, intersecting, encircling, etc.). After flowing through the second diverter tube flange hole 5138, the reducing agent enters the diverter tube cavity 5132.

[0502] In some embodiments, exhaust gas may enter the splitter body 5102 via a splitter body perforation (e.g., hole, aperture, opening, etc.) formed in the splitter body 5102. The splitter body 5102 may include more than one splitter body perforation. According to various embodiments, each splitter body perforation is positioned between the splitter inlet orifice 5130 and the first splitter flange 5104. After flowing through the splitter body perforation, exhaust gas enters the splitter cavity 5132.

[0503] The manifold inlet orifice 5130 is sized and positioned such that the exhaust gas supplied to the manifold cavity 5132 is greater than the exhaust gas supplied to the first manifold flange opening 5136 and the second manifold flange orifice 5138 combined. At least a portion of the manifold inlet orifice 5130 is located near the housing wall 232. Thus, the exhaust gas flowing through the manifold inlet orifice 5130 enters the manifold cavity 5132 radially (e.g., along a tangent to the manifold body 5102, along a line parallel to and deviating from the tangent to the manifold body 5102, etc.). This radial entry causes the exhaust gas to form a vortex within the manifold cavity 5132. The vortex applied by the manifold inlet orifice 5130 promotes mixing of the exhaust gas and the reducing agent within the manifold cavity 5132 and ensures relatively high shear on the manifold body 5102, thereby mitigating the impact of the reducing agent on the manifold body 5102.

[0504] The splitter tube 5100 is positioned such that the injector coupler 234 is aligned with and spaced apart from the second splitter tube flange 5114. Thus, the injection region 314 is located within the splitter tube cavity 5132 and the collection cavity. Consequently, the reducing agent supplied by the dispensing module 112 and / or the injector 120 flows into the splitter tube cavity 5132.

[0505] In various embodiments, the diverter body 5102 includes a guard 5140 (e.g., a wall, a protrusion, etc.). The guard 5140 abuts against the diverter inlet orifice 5130 and extends into the diverter cavity 5132 (e.g., the guard 5140 is bent inward relative to the diverter body 5102, etc.). The guard 5140 serves to mitigate non-radial flow of exhaust gas into the diverter cavity 5132 via the diverter inlet orifice 5130.

[0506] Exhaust gas exits the splitter cavity 5132 via the splitter outlet port 5142 and flows toward the SCR catalyst component 216. The exhaust gas flowing out of the splitter outlet port 5142 flows between the splitter body 5102, the first splitter flange 5104, the splitter panel 5110, the splitter end plate 5112, and the second splitter flange 5114 (e.g., into the groove in the mixing collector wall 226 formed by the splitter body 5102, the first splitter flange 5104, the splitter panel 5110, the splitter end plate 5112, and the second splitter flange 5114). The main body 5102 of the diverter, the first diverter flange 5104, the diverter panel 5110, the diverter end plate 5112, and the second diverter flange 5114 form a volume within which the exhaust gas leaving the diverter outlet hole 5142 can expand, thereby minimizing the back pressure of the decomposition chamber 108, promoting the increase of the UI of the reducing agent and the exhaust gas, and promoting the increase of the flow distribution index of the exhaust gas.

[0507] In some embodiments, the manifold body 5102, the first manifold flange 5104, the manifold panel 5110, the manifold end plate 5112, and the second manifold flange 5114 are shaped, sized, or otherwise configured in various ways to guide exhaust toward the SCR catalyst members 216 and / or (e.g., for targeted distribution, etc.) distribute exhaust between the SCR catalyst members 216. For example, the manifold panel 5110 may include features (e.g., protrusions, projections, ribs, flanges, fins, etc.) extending toward the SCR catalyst members 216 such that exhaust exiting the manifold outlet orifice 5142 abuts against and / or flows between the features and is guided toward and / or distributed between the SCR catalyst members 216.

[0508] As the exhaust gas flows toward the SCR catalyst assembly 216, a portion of the exhaust gas flows into the manifold collector cavity 5144 defined by the manifold collector 5118. A portion of the exhaust gas flowing within the manifold collector cavity 5144 is guided out of the manifold collector cavity 5144 by the manifold guide 5122 and flows toward the SCR catalyst assembly 216. Another portion of the exhaust gas flowing within the manifold collector cavity 5144 flows out of the manifold collector cavity 5144 via manifold manifold wall perforations 5146 (e.g., holes, openings, etc.) in the manifold manifold wall perforations 5120. This additional exit of exhaust gas from the manifold collector cavity 5144 by the manifold manifold wall perforations 5146 minimizes the back pressure of the decomposition chamber 108.

[0509] In some embodiments, the outer casing wall 232 is spaced apart from the manifold body 5102. Thus, a portion of the exhaust gas flows between the outer casing wall 232 and the manifold body 5102, along the manifold body 5102, between the manifold body 5102 and the mixing assembly wall 230, and enters the manifold collector cavity 5144. Therefore, the exhaust gas can flow into the manifold collector cavity 5144 from the manifold outlet orifice 5142 or after flowing around the manifold body 5102. Thus, the back pressure of the decomposition chamber 108 can be reduced. The exhaust gas flowing around the manifold body 5102 heats the manifold body 5102, thereby mitigating the impact of the reducing agent on the manifold body 5102. Furthermore, the exhaust gas flowing around the manifold body 5102 pushes the exhaust gas within the manifold collector cavity 5144 out of the manifold collector cavity 5144, thereby reducing the back pressure of the decomposition chamber 108 and increasing the exhaust gas flow rate.

[0510] The outlet port 5142 of the manifold is positioned close to the first end 5106. This substantially prevents straight flow (e.g., no vortex flow, etc.) of exhaust gas from the inlet port 5130 to the outlet port 5142, ensuring that substantially all exhaust gas leaving the outlet port 5142 is first vortexed by the manifold body 5102. Furthermore, since the inlet port 5130 is positioned close to the second end 5116 and the outlet port 5142 is positioned close to the first end 5106, the distance between the inlet port 5130 and the outlet port 5142 can be maximized, thereby increasing the amount of time the exhaust gas remains within the manifold cavity 5132, which correspondingly increases the mixing and UI of the reducing agent in the exhaust gas.

[0511] In various embodiments, the diverter 5100 also includes a baffle panel 5137. The baffle panel 5137 abuts against the diverter outlet orifice 5142 and extends from the diverter body 5102 toward the diverter guide wall 5124. The baffle panel 5137 may additionally promote the formation of vortices in the exhaust before it flows toward the diverter guide 5122.

[0512] The first diversion pipe flange opening 5136 is provided on the portion of the first diversion pipe flange 5104 opposite to the diversion pipe cavity 5132 (e.g., positioned opposite to the first end 5106). In operation, the first diversion pipe flange opening 5136 facilitates the passage of exhaust gas (e.g., exhaust gas already flowing between the mixing assembly wall 230 and the first diversion pipe flange 5104) through the first diversion pipe flange 5104 and into the diversion pipe cavity 5132 without passing through the diversion pipe inlet hole 5130. This reduces the back pressure of the decomposition chamber 108. Furthermore, the exhaust gas flowing through the first diversion pipe flange opening 5136 heats the first end 5106, thereby mitigating the impact of the reducing agent on the first end 5106. The exhaust gas flowing through the first diversion pipe flange opening 5136 also helps to redirect the exhaust gas flowing within the diversion pipe cavity 5132 toward the diversion pipe outlet hole 5142, thereby reducing the back pressure of the decomposition chamber 108 and increasing the exhaust gas flow rate.

[0513] In various embodiments, the first diverter flange 5104 includes more than one nozzle 5148 (e.g., concentrators, nozzles, etc.). Each nozzle 5148 extends around one of the openings 5136 of the first diverter flange and projects from the first diverter flange 5104 into the diverter cavity 5132. The nozzles 5148 are used to increase the momentum and / or velocity of the exhaust gas propelled through the openings 5136 of the first diverter flange. In this way, the openings 5136 of the first diverter flange can help guide the exhaust gas and reducing agent out of the diverter cavity 5132 and reduce the formation of deposits on the first diverter flange 5104.

[0514] Figure 53 and Figure 54 A first diversion flange 5104 according to various embodiments is shown. The first diversion flange 5104 does not include a nozzle 5148, but instead includes more than one external louver 5300 (e.g., fins, guides, toughs, etc.). Each external louver 5300 extends along at least one of the openings 5136 of the first diversion flange and extends away from the diversion cavity 5132. Thus, each external louver 5300 is used to guide exhaust gas into the diversion cavity 5132 in a target direction (e.g., along the external louver 5300, etc.). In some embodiments, at least one of the external louvers 5300 is parallel to another of the external louvers 5300 (e.g., the first external louver 5300 is arranged along a first axis, and the second external louver 5300 is arranged along a second axis parallel to the first axis, etc.).

[0515] In some embodiments, the first diversion flange 5104 further includes more than one internal louver 5302 (e.g., a fin, guide, or ferrule). Each internal louver 5302 extends along at least one of the openings 5136 of the first diversion flange and into the diversion cavity 5132. Thus, each internal louver 5302 is used to guide exhaust gas into the diversion cavity 5132 in a target direction (e.g., along the internal louver 5302, etc.). In some embodiments, at least one of the internal louvers 5302 is parallel to the other (e.g., the first internal louver 5302 is disposed along a first axis, and the second internal louver 5302 is disposed along a second axis parallel to the first axis, etc.).

[0516] Each external louver 5300 may extend along a first edge (e.g., top edge, bottom edge, front edge, rear edge, etc.) of one of the first diversion pipe flange openings 5136, and each internal louver 5302 may extend along a second edge (e.g., bottom edge, top edge, rear edge, front edge, etc.) of one of the first diversion pipe flange openings 5136 opposite to the first edge. For example, each external louver 5300 may extend along the top edge of one of the first diversion pipe flange openings 5136, and each internal louver 5302 may extend along the bottom edge of one of the first diversion pipe flange openings 5136. In this way, the pair of external louvers 5300 and internal louvers 5302 can cooperate to guide exhaust gas through the first diversion pipe flange 5104 in a target direction.

[0517] Figure 55 A first shunt flange 5104 according to various embodiments is shown. The first shunt flange 5104 includes a groove 5500 (e.g., a recess, etc.). In some embodiments, at least a portion of the groove 5500 is frustoconical. The groove 5500 extends toward the shunt lumen 5132, and each first shunt flange opening 5136 extends through the groove 5500.

[0518] In some embodiments, the recess 5500 includes a recessed surface 5502 surrounding a recessed hub 5504 (e.g., extending around, adjacent to, or surrounding the recessed hub 5504). The recessed hub 5504 may be flat (e.g., relative to the recessed surface 5502). First shunt flange openings 5136 may be disposed within the recessed surface 5502. For example, each first shunt flange opening 5136 may be separated from adjacent first shunt flange openings 5136 at the same angular spacing. In one embodiment, each first shunt flange opening 5136 is separated from adjacent first shunt flange openings 5136 by 45°.

[0519] The first diversion flange 5104 also includes more than one internal louver 5506 (e.g., fins, guides, ferrules, etc.). Each internal louver 5506 extends along at least one of the openings 5136 of the first diversion flange and into the diversion cavity 5132. Thus, each internal louver 5506 is used to guide exhaust gas into the diversion cavity 5132 in a target direction (e.g., along the internal louver 5506, etc.). The internal louvers 5506 may be disposed within the recessed surface 5502. For example, each internal louver 5506 may be separated from adjacent internal louvers 5506 by the same angular spacing. In one example, each internal louver 5506 is separated from adjacent internal louvers 5506 by 45°.

[0520] In some embodiments, the internal louvers 5506 and the first diverter flange opening 5136 are configured (e.g., by position on the grooved surface 5502, by angular spacing, etc.) to cause the exhaust gas flowing through the first diverter flange opening 5136 to form a vortex in a first direction, which is opposite to (e.g., opposite, etc.) a second direction in which the exhaust gas flowing from the diverter inlet orifice 5130 is caused to form a vortex. This enhances the mixing of the reducing agent and the exhaust gas.

[0521] In some embodiments, such as in Figure 56 and Figure 57 As shown, the diverter 5100 also includes a dividing tube panel pocket 5600 (e.g., an expansion material, etc.). The dividing tube panel pocket 5600 is disposed in the dividing tube panel 5110 and abuts the dividing tube body 5102. The dividing tube panel pocket 5600 extends from the mixing collector wall 226. In these embodiments, the dividing tube body 5102 also includes a dividing tube body cutout 5700 (e.g., an opening, a window, etc.). The dividing tube body 5102 is coupled to the dividing tube panel 5110 such that the dividing tube panel pocket 5600 is aligned with the dividing tube body cutout 5700. The dividing tube body cutout 5700 facilitates the drainage of reducing agent within the dividing tube body 5102 into the dividing tube panel pocket 5600, thereby reducing the accumulation of reducing agent. In this way, the dividing tube panel pocket 5600 and the dividing tube body cutout 5700 mitigate deposit formation. Additionally, the shunt body cutout 5700 provides additional venting and reducing agent from the shunt body 5102, thereby reducing the pressure drop of the shunt 5100.

[0522] XXIV. Example decomposition chamber with twenty-first example hybrid component

[0523] Figure 58 A decomposition chamber 108 and a mixing assembly 222 according to another example embodiment are shown. The decomposition chamber 108 includes the dispensing cover 300 described herein. The decomposition chamber 108 also includes a diversion conduit 5800.

[0524] The manifold 5800 includes a manifold body 5802 (e.g., a frame, housing, etc.). The manifold body 5802 is generally cylindrical, elliptical, rectangular, or stadium-shaped. The manifold body 5802 is separated from the housing wall 232 (e.g., to facilitate the flow of exhaust gas between the manifold body 5802 and the housing wall 232, etc.).

[0525] The shunt body 5802 is positioned within a shunt coupler hole 5803 (e.g., a hole, opening, etc.) in the mixing collector wall 226 (e.g., the mixing collector wall 226 is arranged along a plane that divides the shunt body 5802 in two, etc.). The shunt body 5802 is coupled to the mixing collector wall 226 around the shunt coupler hole 5803.

[0526] The splitter 5800 also includes a first splitter flange 5804 (e.g., a wall, a splitter, etc.). The first splitter flange 5804 is coupled (e.g., a first portion of the first splitter flange 5804 is coupled) to a first end 5806 of the splitter body 5802 (e.g., such that the flow of exhaust gas between the first end 5806 and the first splitter flange 5804 is substantially prohibited, etc.). The first splitter flange 5804 is also coupled to the mixing collector wall 226 (e.g., such that the flow of exhaust gas between the mixing collector wall 226 and the first splitter flange 5804 is substantially prohibited, etc.).

[0527] In various embodiments, the first shunt flange 5804 is coupled to the mixing collector wall 226 along the shunt coupler hole 5803 (e.g., along one side of the shunt coupler hole 5803). In various embodiments, the first shunt flange 5804 is not positioned within the shunt coupler hole 5803.

[0528] The manifold 5800 also includes a manifold panel 5810 (e.g., a wall, a manifold connector, etc.). The manifold panel 5810 is coupled to the manifold body 5802 (e.g., to substantially prohibit the flow of exhaust gas between the manifold body 5802 and the manifold panel 5810, etc.). The manifold panel 5810 is also coupled to a first manifold flange 5804 (e.g., to substantially prohibit the flow of exhaust gas between the first manifold flange 5804 and the manifold panel 5810, etc.).

[0529] The manifold 5800 also includes a manifold end plate 5812 (e.g., a panel, wall, manifold, etc.). The manifold end plate 5812 is coupled to the manifold panel 5810 (e.g., to substantially prohibit exhaust flow between the manifold panel 5810 and the manifold end plate 5812). The manifold end plate 5812 is also coupled to a first manifold flange 5804 (e.g., to substantially prohibit exhaust flow between the first manifold flange 5804 and the manifold end plate 5812). The manifold end plate 5812 is also coupled to a mixing collector wall 226 (e.g., to substantially prohibit exhaust flow between the mixing collector wall 226 and the manifold end plate 5812).

[0530] In various embodiments, the shunt end plate 5812 is coupled to the mixing collector wall 226 along the shunt coupler hole 5803 (e.g., along one side of the shunt coupler hole 5803). In various embodiments, the shunt end plate 5812 is not positioned within the shunt coupler hole 5803.

[0531] The splitter 5800 also includes a second splitter flange 5814 (e.g., a wall, a splitter, etc.). The second splitter flange 5814 is coupled (e.g., a first portion of the second splitter flange 5814 is coupled to) a second end 5816 of the splitter body 5802 (e.g., such that the flow of exhaust gas between the second end 5816 and the second splitter flange 5814 is substantially prohibited, etc.). The second end 5816 is opposite to the first end 5806. The second splitter flange 5814 is also coupled to the mixing collector wall 226 (e.g., such that the flow of exhaust gas between the mixing collector wall 226 and the second splitter flange 5814 is substantially prohibited, etc.).

[0532] The first end 5806 may include a tab configured to be received in a groove within the first shunt flange 5804 to facilitate coupling of the shunt body 5802 to the first shunt flange 5804. The second end 5816 may include a tab configured to be received in a groove within the second shunt flange 5814 to facilitate coupling of the shunt body 5802 to the second shunt flange 5814.

[0533] In various embodiments, the second shunt flange 5814 is coupled to the mixing collector wall 226 along the shunt coupler hole 5803 (e.g., along one side of the shunt coupler hole 5803). In various embodiments, the second shunt flange 5814 is not positioned within the shunt coupler hole 5803.

[0534] The shunt tube 5800 establishes a collecting cavity. The collecting cavity is defined between the mixing collector wall 226, the dispensing cover wall 304, the outer shell wall 232, the mixing component wall 230, the shunt tube body 5802, the first shunt tube flange 5804, the shunt tube panel 5810, the shunt tube end plate 5812, and the second shunt tube flange 5814.

[0535] After the exhaust flows out of the distribution cap 300 (e.g., via the distribution cap hole 302), the exhaust enters the diversion pipe body 5802 in one of a variety of different ways.

[0536] First, exhaust gas can enter the manifold body 5802 via a manifold inlet hole 5818 (e.g., a hole, opening, etc.) formed in the manifold body 5802. The manifold inlet hole 5818 is located between the outer casing wall 232 and the position where the manifold panel 5810 is coupled to the manifold body 5802. After flowing through the manifold inlet hole 5818, the exhaust gas enters the manifold cavity 5820 defined by the manifold body 5802.

[0537] Second, exhaust gas can enter the main body of the splitter 5802 via a bypass opening 5822 (e.g., a window). The bypass opening 5822 is located near the second end 5816 and allows a portion of the exhaust gas to flow into the splitter cavity 5820 downstream of the splitter inlet hole 5818.

[0538] The manifold 5800 also includes a manifold bypass ramp 5824 (e.g., a rib, flange, etc.). The manifold bypass ramp 5824 is coupled to the mixing assembly wall 230 (e.g., to substantially prohibit exhaust flow between the mixing assembly wall 230 and the manifold bypass ramp 5824, etc.). Additionally, the manifold bypass ramp 5824 is coupled to the manifold body 5802 (e.g., to substantially prohibit exhaust flow between the manifold body 5802 and the manifold bypass ramp 5824, etc.). The manifold bypass ramp 5824 is coupled to the manifold body 5802, near the manifold body bypass opening 5822. At least a portion of the exhaust flowing between the manifold body 5802 and the mixing assembly wall 230 may flow against the manifold bypass ramp 5824 and be guided by the manifold bypass ramp 5824 into the manifold body bypass opening 5822. The exhaust gas can be relatively hot (e.g., compared to exhaust gas entering the main body 5802 of the splitter pipe via the splitter pipe inlet hole 5818), and thus can heat the various parts of the splitter pipe 5800, which reduces the formation of deposits on the splitter pipe 5800.

[0539] Third, exhaust gas can enter the main body 5802 of the diverter pipe via a first diverter flange perforation 5826 (e.g., hole, opening, etc.). The first diverter flange 5804 includes more than one first diverter flange perforation 5826. According to various embodiments, each first diverter flange perforation 5826 is at least partially external to the first end 5806 (e.g., surrounding, intersecting, encircling, etc.). After flowing through the first diverter flange perforation 5826, exhaust gas enters the diverter cavity 5820.

[0540] Furthermore, the reducing agent (e.g., via injector 120, via dispensing module 112, etc.) can enter the main body 5802 of the diverter tube through the second diverter flange hole 5828 (e.g., a hole, opening, etc.). The second diverter flange hole 5828 is at least partially external to the second end 5816 (e.g., surrounding, intersecting, encircling, etc.). After flowing through the second diverter flange hole 5828, the reducing agent enters the diverter cavity 5820.

[0541] In various embodiments, the manifold inlet orifice 5818 is sized and positioned such that the exhaust gas supplied to the manifold cavity 5820 is greater than the exhaust gas supplied to the first manifold flange through-hole 5826 and the manifold body bypass opening 5822 combined. At least a portion of the manifold inlet orifice 5818 is positioned close to the housing wall 232. Thus, the exhaust gas flowing through the manifold inlet orifice 5818 enters the manifold cavity 5820 radially (e.g., along a tangent to the manifold body 5802, along a line parallel to and deviating from the tangent to the manifold body 5802, etc.). This radial entry causes the exhaust gas to form vortices within the manifold cavity 5820. The vortices applied by the manifold inlet orifice 5818 promote mixing of the exhaust gas and the reducing agent within the manifold cavity 5820 and ensure relatively high shear on the manifold body 5802, thereby mitigating the impact of the reducing agent on the manifold body 5802.

[0542] The mixing assembly wall 230 includes an injector coupler 234. The splitter 5800 is positioned such that the injector coupler 234 is aligned with and spaced apart from the second splitter flange 5814. Thus, the injection region 314 is located within the splitter cavity 5820 and the collecting cavity.

[0543] Exhaust gas exits the splitter cavity 5820 via the splitter outlet port 5830 and flows toward the SCR catalyst component 216. The exhaust gas flowing out of the splitter outlet port 5830 flows between the splitter body 5802, the first splitter flange 5804, the splitter panel 5810, the splitter end plate 5812, and the second splitter flange 5814 (e.g., into the groove in the mixing collector wall 226 formed by the splitter body 5802, the first splitter flange 5804, the splitter panel 5810, the splitter end plate 5812, and the second splitter flange 5814). The main body 5802 of the diverter, the first diverter flange 5804, the diverter panel 5810, the diverter end plate 5812, and the second diverter flange 5814 form a volume within which the exhaust gas leaving the diverter outlet hole 5830 can expand, thereby minimizing the back pressure of the decomposition chamber 108, promoting the increase of the UI of the reducing agent and the exhaust gas, and promoting the increase of the flow distribution index of the exhaust gas.

[0544] In some embodiments, the manifold body 5802, the first manifold flange 5804, the manifold panel 5810, the manifold end plate 5812, and the second manifold flange 5814 are shaped, sized, or otherwise configured in various ways to guide exhaust gas toward the SCR catalyst members 216 and / or (e.g., for targeted distribution, etc.) distribute it among the SCR catalyst members 216. For example, the manifold panel 5810 may include features (e.g., protrusions, projections, ribs, flanges, fins, etc.) extending toward the SCR catalyst members 216 such that exhaust gas exiting the manifold outlet orifice 5830 abuts against and / or flows between the features and is guided toward and / or distributed among the SCR catalyst members 216.

[0545] The outlet port 5830 of the manifold is positioned close to the first end 5806. This substantially prevents straight flow (e.g., no vortex flow) of exhaust gas from the inlet port 5818 to the outlet port 5830, ensuring that virtually all exhaust gas leaving the outlet port 5830 is first vortexed by the manifold body 5802. Furthermore, since the inlet port 5818 is positioned close to the second end and the outlet port 5830 is positioned close to the first end 5806, the distance between the inlet port 5818 and the outlet port 5830 can be maximized, thereby increasing the amount of time the exhaust gas remains within the manifold cavity 5820. This correspondingly increases the mixing and UI of the reducing agent in the exhaust gas.

[0546] A first diversion tube flange perforation 5826 is provided on the portion of the first diversion tube flange 5804 opposite to the diversion tube cavity 5820 (e.g., positioned opposite to the first end 5806). In operation, the first diversion tube flange perforation 5826 facilitates the passage of exhaust gas (e.g., exhaust gas already flowing between the mixing assembly wall 230 and the first diversion tube flange 5804) through the first diversion tube flange 5804 and into the diversion tube cavity 5820 without passing through the diversion tube inlet hole 5818. This reduces the back pressure of the decomposition chamber 108. Furthermore, the exhaust gas flowing through the first diversion tube flange perforation 5826 heats the first end 5806, thereby mitigating the impact of the reducing agent on the first end 5806. The exhaust flowing through the flange perforation 5826 of the first diversion tube can also help to redirect the exhaust flowing in the diversion tube cavity 5820 toward the diversion tube outlet hole 5830, thereby reducing the back pressure of the decomposition chamber 108 and increasing the exhaust UI.

[0547] XXV. Example decomposition chamber with twenty-two example hybrid components

[0548] Figure 59 and Figure 60 A diverter 5900 for a decomposition chamber 108 according to various embodiments is shown. The diverter 5900 may be implemented in the decomposition chamber 108 in place of any diverter described above, such as diverter 800, diverter 1300, diverter 2800, diverter 4600, or diverter 5100.

[0549] The diverter 5900 includes a diverter body 5902 (e.g., a frame, housing, etc.). The diverter body 5902 is tapered and includes several cylindrical portions of different diameters. In various embodiments, the diverter body 5902 is configured to be positioned within a diverter coupler hole (e.g., a hole, opening, etc.) in the mixing collector wall 226 (e.g., the mixing collector wall 226 is disposed along a plane that divides the diverter body 5902 in two, etc.).

[0550] The splitter 5900 also includes a first splitter flange 5904 (e.g., a wall, a splitter, etc.). The first splitter flange 5904 is coupled (e.g., a first portion of the first splitter flange 5904 is coupled) to a first end 5905 of the splitter body 5902 (e.g., such that the flow of exhaust gas between the first end 5905 and the first splitter flange 5904 is substantially prohibited). The splitter 5900 also includes a second splitter flange 5906 (e.g., a wall, a splitter, etc.). The second splitter flange 5906 is coupled (e.g., a first portion of the second splitter flange 5906 is coupled) to a second end 5908 of the splitter body 5902 (e.g., such that the flow of exhaust gas between the second end 5908 and the second splitter flange 5906 is substantially prohibited). The second end 5908 is opposite to the first end 5905.

[0551] The first end 5905 may include a tab configured to be received within a groove in the first branch pipe flange 5904 to facilitate coupling between the branch pipe body 5902 and the first branch pipe flange 5904. The second end 5908 may include a tab fitted to be received within a groove in the second branch pipe flange 5906 to facilitate coupling between the branch pipe body 5902 and the second branch pipe flange 5906.

[0552] After the exhaust flows out of the distribution cap 300 (for example, via the distribution cap hole 302), the exhaust enters the diversion pipe body 5902 in one of a variety of different ways.

[0553] First, exhaust gas can enter the manifold body 5902 via a manifold inlet hole 5910 (e.g., a hole, opening, etc.) formed in the manifold body 5902. The manifold inlet hole 5910 is configured to be located between the housing wall 232 and the position where the manifold panel is coupled to the manifold body 5902. After flowing through the manifold inlet hole 5910, the exhaust gas enters the manifold cavity 5912 defined by the manifold body 5902.

[0554] The exhaust gas flowing through the inlet orifice 5910 enters the manifold cavity 5912 radially (e.g., along a tangent to the manifold body 5902, along a line parallel to and deviating from the tangent to the manifold body 5902, etc.). This radial entry causes the exhaust gas to form a vortex within the manifold cavity 5912. The vortex applied by the manifold inlet orifice 5910 promotes the mixing of the exhaust gas and the reducing agent within the manifold cavity 5912 and ensures a relatively high shear rate on the manifold body 5902, thereby mitigating the impact of the reducing agent on the manifold body 5902.

[0555] Second, exhaust gas can enter the main body 5902 of the diversion pipe via a first diversion pipe flange perforation 5914 (e.g., hole, opening, etc.). The first diversion pipe flange 5904 includes more than one first diversion pipe flange perforation 5914. According to various embodiments, each first diversion pipe flange perforation 5914 is at least partially external to the first end 5905 (e.g., surrounding, intersecting, encircling, etc.). After flowing through the first diversion pipe flange perforation 5914, exhaust gas enters the diversion pipe cavity 5912.

[0556] Third, exhaust gas can enter the splitter body 5902 via a first splitter flange transfer perforation 5916 (e.g., a hole, aperture, opening, etc.). The first splitter flange 5904 includes more than one first splitter flange transfer perforation 5916. The first splitter flange transfer perforation 5916 is located on a portion of the first splitter flange 5904 that is not opposite to the splitter cavity 5912 (e.g., downstream of the splitter body 5902, etc.). Alternatively, the splitter flange transfer perforation 5916 is located on a portion of the first splitter flange 5904 opposite to the transfer cavity (e.g., downstream of the splitter body 5902, etc.). In operation, the splitter flange transfer perforation 5916 facilitates exhaust gas (e.g., exhaust gas already flowing between the mixing assembly wall 230 and the first splitter flange 5904, etc.) passing through the first splitter flange 5904 and entering the transfer cavity without passing through the splitter body 5902. Thus, the back pressure of the decomposition chamber 108 can be reduced. Furthermore, the exhaust gas flowing through the transfer perforation 5916 of the manifold flange heats the first manifold flange 5904, thereby reducing the impact of the reducing agent on the first manifold flange 5904. The exhaust gas flowing through the transfer perforation 5916 of the manifold flange also helps to redirect the exhaust gas flowing in the transfer chamber towards the flow holes of the mixing assembly, thereby reducing the back pressure of the decomposition chamber 108 and increasing the exhaust gas flow rate (UI).

[0557] Furthermore, the reducing agent (e.g., via injector 120, via dispensing module 112, etc.) can enter the main body 5902 of the diverter tube through the second diverter tube flange hole 5918 (e.g., a hole, opening, etc.). The second diverter tube flange hole 5918 is at least partially external to the second end 5908 (e.g., surrounding, intersecting, encircling, etc.). After flowing through the second diverter tube flange hole 5918, the reducing agent enters the diverter tube cavity 5912.

[0558] In various embodiments, the shunt inlet orifice 5910 is sized and positioned such that the exhaust gas supplied to the shunt cavity 5912 is greater than the exhaust gas supplied to the first shunt flange through-hole 5914 and the shunt flange transfer through-hole 5916 combined.

[0559] In various embodiments, the diverter body 5902 includes a guard 5920 (e.g., a wall, a protrusion, etc.). The guard 5920 abuts against the diverter inlet orifice 5910 and extends into the diverter cavity 5912 (e.g., the guard 5920 is bent inward relative to the diverter body 5902, etc.). The guard 5920 serves to mitigate non-radial flow of exhaust gas into the diverter cavity 5912 via the diverter inlet orifice 5910.

[0560] The exhaust gas leaves the splitter chamber 5912 through the splitter outlet port 5922 and flows toward the SCR catalyst component 216.

[0561] In some embodiments, the splitter body 5902, the first splitter flange 5904, and the second splitter flange 5906 are shaped, sized, or otherwise configured in various ways to guide exhaust gas toward the SCR catalyst members 216 and / or (e.g., for targeted distribution, etc.) distribute it among the SCR catalyst members 216. For example, the first splitter flange 5904 may include features (e.g., protrusions, projections, ribs, flanges, fins, etc.) extending toward the SCR catalyst members 216 such that exhaust gas exiting the splitter outlet orifice 5922 abuts against and / or flows between the features and is guided toward and / or distributed among the SCR catalyst members 216.

[0562] The outlet port 5922 of the manifold is positioned close to the first end 5905. This substantially prevents straight flow of exhaust gas from the inlet port 5910 to the outlet port 5922 (e.g., vortex-free flow), ensuring that virtually all exhaust gas leaving the outlet port 5922 is first vortexed by the manifold body 5902. Furthermore, since the inlet port 5910 is positioned close to the second end and the outlet port 5922 is positioned close to the first end 5905, the distance between the inlet port 5910 and the outlet port 5922 can be maximized, thereby increasing the amount of time the exhaust gas remains within the manifold cavity 5912. This correspondingly increases the mixing and UI of the reducing agent in the exhaust gas.

[0563] A first branch pipe flange perforation 5914 is provided on the portion of the first branch pipe flange 5904 opposite to the branch pipe cavity 5912 (e.g., positioned opposite to the first end 5905). In operation, the first branch pipe flange perforation 5914 facilitates the passage of exhaust gas (e.g., exhaust gas already flowing between the mixing assembly wall 230 and the first branch pipe flange 5904) through the first branch pipe flange 5904 and into the branch pipe cavity 5912 without passing through the branch pipe inlet hole 5910. This reduces the back pressure of the decomposition chamber 108. Furthermore, the exhaust gas flowing through the first branch pipe flange perforation 5914 heats the first end 5905, thereby mitigating the impact of the reducing agent on the first end 5905. The exhaust flowing through the flange perforation 5914 of the first diversion tube can also help to divert the exhaust flowing in the diversion tube cavity 5912 toward the diversion tube outlet hole 5922, thereby reducing the back pressure of the decomposition chamber 108 and increasing the exhaust UI.

[0564] Because the splitter body 5902 is tapered, it can be used to increase the exhaust velocity at locations where impacts are more likely to occur (e.g., downstream of the second splitter flange orifice 5918 and upstream of the splitter outlet orifice 5922). This tapered shape of the splitter body 5902 can also contribute to enhanced NOx emission reduction.

[0565] Furthermore, the tapered shape of the manifold body 5902 facilitates the passage of exhaust gas between the manifold body 5902 and the outer casing wall 232. This exhaust gas can heat the manifold 5900 and reduce the formation of deposits on the manifold 5900.

[0566] Figure 61 A diverter body 5902 according to various embodiments is shown. In these embodiments, the diverter body 5902 further includes an outlet lip 6100. The outlet lip 6100 is coupled to a first diverter flange 5904 and the diverter body 5902. The outlet lip 6100 is configured to facilitate enhanced mixing of exhaust gas and reducing agent downstream of the diverter outlet orifice 5922.

[0567] The outlet lip 6100 includes an outlet lip planar portion 6102. The outlet lip planar portion 6102 is configured to face the mixing collector wall 226. The outlet lip 6100 also includes an outlet lip curved portion 6104. The outlet lip curved portion 6104 is configured to bend away from the mixing collector wall 226 and toward the housing wall 232. The outlet lip curved portion 6104 is adjacent to the outlet lip planar portion 6102 and is separated from the first branch pipe flange 5904 by the outlet lip planar portion 6102.

[0568] The outlet lip 6100 also includes more than one outlet lip perforation 6106 (e.g., opening, hole, etc.). Each outlet lip perforation 6106 is configured to facilitate exhaust gas through the outlet lip 6100. In this way, the outlet lip can enhance the mixing of exhaust gas and reducing agent, reduce the back pressure of the decomposition chamber 108, and / or increase the UI of the exhaust gas.

[0569] XXVI. Example Decomposition Chamber with Twenty-Third Example Hybrid Component

[0570] Figures 62-63C A decomposition chamber 108 and a mixing assembly 222 according to another example embodiment are shown. The decomposition chamber 108 includes the dispensing cap 300 described herein. The decomposition chamber 108 also includes a diversion tube 6200.

[0571] As explained in more detail below, the splitter 6200 includes a first section 6202 that receives a portion of the exhaust gas and a second section 6204 that supplies all the exhaust gas to the SCR catalyst assembly 216. The splitter 6200 can be implemented in the decomposition chamber 108 in place of any of the splitters described above, such as splitter 800, splitter 1300, splitter 2800, splitter 4500, splitter 4600, splitter 5100, splitter 5800, or splitter 5900.

[0572] The flow divider 6200 includes a flow divider body 6205 (e.g., a frame, housing, etc.). The flow divider body 6205 is generally cylindrical, elliptical, or rectangular. Instead of being coupled to the mixing assembly wall 230 around a hole, the flow divider body 6205 is integrally formed with the mixing assembly wall 230. For example, the mixing assembly wall 230 can be bent and shaped in various different ways to form the flow divider body 6205 (e.g., using a punch press, etc.).

[0573] The splitter 6200 also includes a first splitter flange 6206 (e.g., a wall, a splitter, etc.). The first splitter flange 6206 is coupled (e.g., a first portion of the first splitter flange 6206 is coupled) to a first end 6207 of the splitter body 6205 (e.g., such that the flow of exhaust gas between the first end 6207 and the first splitter flange 6206 is substantially prohibited, etc.). The first splitter flange 6206 is also coupled to the mixing collector wall 226 (e.g., such that the flow of exhaust gas between the mixing collector wall 226 and the first splitter flange 6206 is substantially prohibited, etc.).

[0574] In some embodiments, the manifold 6200 further includes a cap (e.g., a panel, wall, manifold, etc.). The cap is coupled to the first end 6207 (e.g., to substantially prohibit the flow of exhaust gas between the first end 6207 and the cap). The cap is also coupled to the first manifold flange 6206 (e.g., to substantially prohibit the flow of exhaust gas between the first manifold flange 6206 and the cap).

[0575] The manifold 6200 also includes a manifold panel 6210 (e.g., wall, manifold, etc.). The manifold panel 6210 is integrally formed with the manifold body 6205. The manifold panel 6210 is coupled to the first manifold flange 6206 (e.g., such that the flow of exhaust gas between the first manifold flange 6206 and the manifold panel 6210 is substantially prohibited, etc.).

[0576] The diverter 6200 also includes a diverter end plate 6212 (e.g., a panel, wall, diverter, etc.). The diverter end plate 6212 is integrally formed with the diverter panel 6210. In various embodiments, the edge between the diverter panel 6210 and the diverter end plate 6212 is rounded. This reduces the backflow area.

[0577] The manifold end plate 6212 is also coupled to the first manifold flange 6206 (e.g., to substantially prohibit exhaust flow between the first manifold flange 6206 and the manifold end plate 6212). In various embodiments, the edge between the manifold end plate 6212 and the first manifold flange 6206 is rounded. This reduces the recirculation area.

[0578] The diverter end plate 6212 is also integrally formed with the mixing collector wall 226. In various embodiments, the edge between the diverter end plate 6212 and the mixing collector wall 226 is rounded. Therefore, the recirculation zone can be reduced.

[0579] In various embodiments, the shunt end plate 6212 is disposed along a first plane, and the shunt panel 6210 is disposed along a second plane, the second plane being separated from the first plane by an angular distance not equal to 90°. In various embodiments, the angular distance is equal to an angle between approximately 20° and 70° (inclusive) (e.g., 19°, 20°, 21°, 30°, 40°, 45°, 50°, 60°, 67°, 70°, 73°, etc.). In other embodiments, the angular distance is approximately 90°.

[0580] The splitter 6200 also includes a second splitter flange 6214 (e.g., a wall, a splitter, etc.). The second splitter flange 6214 is coupled (e.g., a first portion of the second splitter flange 6214 is coupled) to a second end 6216 of the splitter body 6205 (e.g., such that the flow of exhaust gas between the second end 6216 and the second splitter flange 6214 is substantially prohibited, etc.). The second end 6216 is opposite to the first end 6207.

[0581] The second manifold flange 6214 is also coupled to the manifold panel 6210 (e.g., to substantially prohibit exhaust flow between the manifold panel 6210 and the second manifold flange 6214). In various embodiments, the edge between the manifold panel 6210 and the second manifold flange 6214 is rounded. This reduces the recirculation area.

[0582] The second diverter flange 6214 is also coupled to the mixing collector wall 226 (e.g., to substantially prohibit exhaust flow between the mixing collector wall 226 and the second diverter flange 6214). In various embodiments, the edge between the mixing collector wall 226 and the second diverter flange 6214 is rounded. This reduces the recirculation zone.

[0583] The first end 6207 may include a tab configured to be received in a groove within the first shunt flange 6206 to facilitate coupling between the shunt body 6205 and the first shunt flange 6206. The second end 6216 may include a tab configured to be received in a groove within the second shunt flange 6214 to facilitate coupling between the shunt body 6205 and the second shunt flange 6214.

[0584] The diverter 6200 establishes a collection chamber. The collection chamber is defined between the mixing collector wall 226, the distribution cover wall 304, the outer shell wall 232, the mixing component wall 230, the diverter body 6205, the first diverter flange 6206, the diverter panel 6210, the diverter end plate 6212, and the second diverter flange 6214.

[0585] After the exhaust flows out of the distribution cap 300 (e.g., via the distribution cap hole 302), the exhaust enters the diversion pipe body 6205 in one of a variety of different ways.

[0586] First, exhaust gas can enter the manifold body 6205 via a manifold inlet hole 6230 (e.g., a hole, opening, etc.) formed in the manifold body 6205. The manifold inlet hole 6230 is located between the outer casing wall 232 and the position where the manifold panel 6210 is coupled to the manifold body 6205. After flowing through the manifold inlet hole 6230, the exhaust gas enters the manifold cavity 6232 defined by the manifold body 6205.

[0587] Second, exhaust gas can enter the main body 6205 of the diverter pipe via a first diverter flange opening 6236 (e.g., a hole, aperture, opening, etc.). The first diverter flange 6206 may include more than one first diverter flange opening 6236. According to various embodiments, each first diverter flange opening 6236 is at least partially external to the first end 6207 (e.g., surrounding, intersecting, encircling, etc.). After flowing through the first diverter flange opening 6236, exhaust gas enters the diverter cavity 6232.

[0588] Furthermore, the reducing agent (e.g., via injector 120, via dispensing module 112, etc.) can enter the main body 6205 of the diverter tube through the second diverter tube flange hole 6238 (e.g., a hole, opening, etc.). The second diverter tube flange hole 6238 is at least partially external to the second end 6216 (e.g., surrounding, intersecting, encircling, etc.). After flowing through the second diverter tube flange hole 6238, the reducing agent enters the diverter tube cavity 6232.

[0589] In some embodiments, exhaust gas can enter the diverter body 6205 via a diverter body perforation (e.g., hole, aperture, opening, etc.) formed in the diverter body 6205. The diverter body 6205 may include more than one diverter body perforation. According to various embodiments, each diverter body perforation is positioned between the diverter inlet orifice 6230 and the first diverter flange 6206. Exhaust gas enters the diverter cavity 6232 after flowing through the diverter body perforation.

[0590] The manifold inlet orifice 6230 is sized and positioned such that more exhaust gas is supplied to the manifold cavity 6232 than to the first manifold flange opening 6236. At least a portion of the manifold inlet orifice 6230 is positioned close to the housing wall 232. Thus, the exhaust gas flowing through the manifold inlet orifice 6230 enters the manifold cavity 6232 radially (e.g., along a tangent to the manifold body 6205, along a line parallel to and deviating from the tangent to the manifold body 6205, etc.). This radial entry causes the exhaust gas to form vortices within the manifold cavity 6232. The vortices applied by the manifold inlet orifice 6230 promote mixing of the exhaust gas and the reducing agent within the manifold cavity 6232 and ensure relatively high shear on the manifold body 6205, thereby mitigating the impact of the reducing agent on the manifold body 6205.

[0591] The splitter tube 6200 is positioned such that the injector coupler 234 is aligned with and spaced apart from the second splitter tube flange 6238. Thus, the injection region 314 is located within the splitter tube cavity 6232 and the collecting cavity.

[0592] In various embodiments, the diverter body 6205 includes a guard 6240 (e.g., a wall, a protrusion, etc.). The guard 6240 abuts against the diverter inlet orifice 6230 and extends into the diverter cavity 6232 (e.g., the guard 6240 is bent inward relative to the diverter body 6205, etc.). The guard 6240 is used to mitigate the non-radial flow of exhaust gas into the diverter cavity 6232 via the diverter inlet orifice 6230.

[0593] Exhaust gas exits the splitter cavity 6232 via the splitter outlet port 6242 and flows toward the SCR catalyst component 216. The exhaust gas flowing out of the splitter outlet port 6242 flows between the splitter body 6205, the first splitter flange 6206, the splitter panel 6210, the splitter end plate 6212, and the second splitter flange 6214 (e.g., into the groove in the mixing collector wall 226 formed by the splitter body 6205, the first splitter flange 6206, the splitter panel 6210, the splitter end plate 6212, and the second splitter flange 6214). The main body 6205 of the diverter, the first diverter flange 6206, the diverter panel 6210, the diverter end plate 6212, and the second diverter flange 6214 form a volume within which the exhaust gas leaving the diverter outlet hole 6242 can expand, thereby minimizing the back pressure of the decomposition chamber 108, promoting the increase of the UI of the reducing agent and the exhaust gas, and promoting the increase of the flow distribution index of the exhaust gas.

[0594] In some embodiments, the manifold body 6205, the first manifold flange 6206, the manifold panel 6210, the manifold end plate 6212, and the second manifold flange 6214 are shaped, sized, or otherwise configured in various ways to guide exhaust gas toward the SCR catalyst members 216 and / or (e.g., for targeted distribution, etc.) distribute it among the SCR catalyst members 216. For example, the manifold panel 6210 may include features (e.g., protrusions, projections, ribs, flanges, fins, etc.) extending toward the SCR catalyst members 216 such that exhaust gas exiting the manifold outlet orifice 6242 abuts against and / or flows between the features and is guided toward and / or distributed among the SCR catalyst members 216.

[0595] The outlet port 6242 of the manifold is positioned close to the first end 6207. This substantially prevents straight flow of exhaust gas from the inlet port 6230 to the outlet port 6242 (e.g., no vortex flow, etc.), ensuring that substantially all exhaust gas leaving the outlet port 6242 is first vortexed by the manifold body 6205. Furthermore, since the inlet port 6230 is positioned close to the second end 6216 and the outlet port 6242 is positioned close to the first end 6207, the distance between the inlet port 6230 and the outlet port 6242 can be maximized, thereby increasing the amount of time the exhaust g...

Claims

1. A decomposition chamber for an exhaust aftertreatment system, the decomposition chamber comprising: A dispensing cover configured to receive exhaust gas, the dispensing cover including a dispensing cover wall; Mixing collector walls; A hybrid component wall coupled to the hybrid collector wall; The housing wall is coupled to the hybrid component wall; A first channel wall, coupled to the mixing collector wall, the housing wall, the dispensing cover wall, and the mixing assembly wall; A second channel wall, which is coupled to the mixing collector wall, the housing wall, and the mixing assembly wall; and A baffle flange assembly located between the dispensing cover wall, the mixing collector wall, the mixing component wall, the housing wall, and the first channel wall, the baffle flange assembly including a first baffle flange wall, a second baffle flange wall, and a third baffle flange wall, and configured to guide exhaust gas (i) to flow between the first baffle flange wall and the dispensing cover wall, (ii) to flow between the second baffle flange wall and the first channel wall, and (iii) to flow between the third baffle flange wall and the mixing component wall.

2. The decomposition chamber according to claim 1 further includes: An injector coupling groove is recessed into the wall of the mixing collector and configured to receive an injector coupler. A first flow guide, the first flow guide being coupled to the second channel wall and extending toward the distribution cover wall; and A second flow guide is coupled to the injector coupling groove and extends toward the dispensing cover wall; The second guide is configured to break the turbulence between the mixing collector wall and the first guide, and to direct the exhaust gas and reducing agent between the second channel wall and the dispensing cover wall toward the first channel wall.

3. The decomposition chamber according to claim 2, wherein the ejector coupling groove further comprises: Docking coupling flange; Coupled wall; and An internal coupling flange, which is separated from the mating coupling flange by the coupling wall, wherein the second flow guide is coupled to the internal coupling flange.

4. The decomposition chamber according to claim 1, wherein: The first baffle flange wall is coupled to the mixing collector wall and the housing wall, and the first baffle flange wall is configured to: Essentially, this prevents exhaust gas from flowing between the first baffle flange wall and the mixing collector wall, and Essentially, exhaust flow between the first baffle flange wall and the outer casing wall is prohibited; and The first baffle flange wall is spaced apart from the distribution cover wall, such that the exhaust is configured to flow along the first baffle flange wall between the first baffle flange wall and the distribution cover wall.

5. The decomposition chamber according to claim 4, wherein: The second baffle flange wall is structurally integral with the first baffle flange wall, and the second baffle flange wall is coupled to the mixing collector wall and the outer shell wall. The second baffle flange wall is configured such that: Essentially, this prevents exhaust gas from flowing between the second baffle flange wall and the mixing collector wall, and Essentially, exhaust flow between the second baffle flange wall and the outer casing wall is prohibited; and The second baffle flange wall is spaced apart from the first channel wall at a plurality of perforations near the first channel wall, such that exhaust is configured to flow along the second baffle flange wall between the second baffle flange wall and the first channel wall.

6. The decomposition chamber according to claim 5, wherein: The third baffle flange wall is structurally integral with the first baffle flange wall and the second baffle flange wall. The third baffle flange wall is coupled to the mixing collector wall and the outer shell wall. The third baffle flange wall is configured such that: Essentially, it prevents exhaust gas from flowing between the wall of the third baffle flange and the wall of the mixing collector, and Essentially, exhaust gas flow between the third baffle flange wall and the outer casing wall is prohibited; and The third baffle flange wall is spaced apart from the mixing component wall, such that the exhaust gas is configured to flow along the third baffle flange wall between the third baffle flange wall and the mixing component wall.

7. The decomposition chamber according to claim 1, wherein the second channel wall comprises: A first portion of the second channel wall, coupled to the mixing collector wall and the housing wall, is configured such that: Essentially, this prevents exhaust gas from flowing between the first portion of the second channel wall and the mixing collector wall, and Essentially, exhaust flow between the first portion of the second channel wall and the outer casing wall is prohibited; and The second portion of the second channel wall is structurally integral with and coupled to the first portion of the second channel wall, wherein the second portion of the second channel wall is configured to: Essentially, this prevents exhaust gas from flowing between the second section of the second channel wall and the mixing collector wall, and The exhaust gas is guided to flow between the second portion of the second channel wall and the outer casing wall.

8. The decomposition chamber according to claim 7, wherein the second channel wall further comprises: The third portion of the second channel wall is structurally integral with and coupled to the mixing collector wall and the outer shell wall, wherein the third portion of the second channel wall is configured to: Essentially, it prevents exhaust gas from flowing between the third section of the second channel wall and the mixing collector wall, and Essentially, exhaust flow is prohibited between the third portion of the second channel wall and the outer casing wall; and The fourth portion of the second channel wall is structurally integral with and coupled to the third portion of the second channel wall, wherein the fourth portion of the second channel wall is configured to: Essentially, this prevents exhaust gas from flowing between the fourth section of the second channel wall and the mixing collector wall, and The exhaust gas is guided to flow between the fourth portion of the second channel wall and the outer casing wall.

9. The decomposition chamber according to claim 1, further comprising: The transmission component includes: Conveyor component shell wall; and A selective catalytic reduction (SCR) catalyst component, wherein the SCR catalyst component is coupled to the shell wall of the delivery assembly; A tapered flange is located between the mixing collector wall and the conveying assembly housing wall, the tapered flange including an annular lip located within and coupled to the mixing assembly flow hole in the mixing collector wall; The tapered flange is configured to distribute exhaust gas from the flow orifice of the mixing assembly onto the SCR catalyst member.

10. The decomposition chamber according to claim 1, further comprising: A corner wall, located near and spaced apart from the corner of the hybrid component wall, coupled to: The mixing collector wall effectively prevents the flow of exhaust gas between the corner wall and the mixing collector wall. The outer casing wall effectively prevents the flow of exhaust gas between the corner wall and the outer casing wall. The mixing component wall effectively prohibits the flow of exhaust gas between the corner wall and the mixing component wall; The distance is configured to reduce heat transfer from the corner wall and keep the corner wall at a relatively high temperature.

11. A decomposition chamber for an exhaust aftertreatment system, the decomposition chamber comprising: Multiple selective catalytic reduction (SCR) catalyst components; Outer shell wall; A mixing collector wall having a shunt coupler hole; and The shunt assembly includes: An inlet splitter, configured to receive exhaust gas from a collecting cavity established by the splitter assembly, the inlet splitter including an inlet splitter body located within the splitter coupler orifice, the inlet splitter body being coupled to the mixing collector wall around the splitter coupler orifice, and An outlet splitter, coupled to the inlet splitter and configured to receive exhaust gas from the inlet splitter and supply exhaust gas to the SCR catalyst assembly, the outlet splitter including an outlet splitter body located within the splitter coupler orifice.

12. The decomposition chamber of claim 11, wherein the diversion tube assembly further comprises: The first diversion tube assembly flange is coupled to the first end of the inlet diversion tube of the inlet diversion tube body, the first end of the outlet diversion tube of the outlet diversion tube body, and the wall of the mixing collector. and The second diverter assembly flange is coupled to the second end of the inlet diverter of the inlet diverter body, the second end of the outlet diverter of the outlet diverter body, and the wall of the mixing collector.

13. The decomposition chamber of claim 11, wherein the diversion tube assembly further comprises: An inlet shunt inlet hole is formed in the inlet shunt body, and the inlet shunt inlet hole is located between the outer shell wall and the coupling position of the shunt panel to the inlet shunt body, and the inlet shunt body defines the inlet shunt cavity; and The inlet diverter body is centered on the axis of the inlet diverter body, and the exhaust flows through the inlet diverter cavity in a direction parallel to the axis of the inlet diverter body.

14. The decomposition chamber according to claim 13, wherein, A portion of the inlet port of the inlet diverter is positioned close to the housing wall, and exhaust is configured to flow through the inlet port of the inlet diverter to enter the inlet diverter cavity radially.

15. The decomposition chamber according to claim 12, wherein, The first shunt assembly flange includes a plurality of first flange inlet body through holes, which are disposed on the portion of the first shunt assembly flange opposite to the inlet shunt cavity, and the inlet shunt cavity is defined by the inlet shunt body.

16. The decomposition chamber of claim 13, wherein the diversion tube assembly further comprises: A conveying opening, defined by the inlet diverter body and / or the outlet diverter body, is provided, through which exhaust gas is configured to flow and enter the outlet diverter cavity, defined by the outlet diverter body; and The main body of the outlet diverter pipe is centered on the axis of the main body of the outlet diverter pipe, and the axis of the main body of the outlet diverter pipe is approximately parallel to the axis of the main body of the inlet diverter pipe.

17. The decomposition chamber of claim 11, further comprising a perforated panel extending between the SCR catalyst member and the splitter assembly, the perforated panel including a plurality of perforated panel perforations, each of the plurality of perforated panel perforations being aligned with the SCR catalyst member, and the plurality of perforated panel perforations being configured to allow exhaust gas to pass through the perforated panel.

18. The decomposition chamber according to claim 11, further comprising: An outlet diversion cavity, the outlet diversion cavity being defined by the outlet diversion tube body; and The bypass opening of the main body of the diverter is included in the outlet diverter body and is disposed on the outlet diverter cavity. The exhaust gas is configured to flow through the bypass opening of the main body of the diverter and directly enter the outlet diverter cavity.

19. The decomposition chamber according to claim 12, wherein, The first shunt assembly flange includes a plurality of first flange outlet body through-holes, the plurality of first flange outlet body through-holes being at least partially external to the first end of the outlet shunt, the plurality of first flange outlet body through-holes being disposed on the portion of the first shunt assembly flange opposite to the outlet shunt cavity, wherein the outlet shunt cavity is defined by the outlet shunt body, and exhaust is configured to enter the outlet shunt cavity after flowing through the plurality of first flange outlet body through-holes.

20. The decomposition chamber according to claim 12, wherein, The flanges of the first shunt assembly and the second shunt assembly are planar.

21. A decomposition chamber for an exhaust aftertreatment system, the decomposition chamber comprising: A mixing collector wall, the mixing collector wall including a shunt coupler orifice; A hybrid component wall coupled to the hybrid collector wall; The housing wall is coupled to the hybrid component wall; and The diversion pipe includes: The main body of the diverter tube is coupled to the wall of the mixing collector around the diverter tube coupler hole, and the main body of the diverter tube defines a diverter tube cavity; A first shunt flange is coupled to a first end of the shunt body and the wall of the mixing collector; The shunt panel is coupled to the shunt body and is disposed along a first plane; Diverter end plate, the diverter end plate being coupled to the diverter panel and the mixing collector wall, the diverter end plate being disposed along a second plane that is angularly separated from the first plane; A shunt inlet hole is formed in the shunt body and located between the outer shell wall and the coupling point between the shunt panel and the shunt body; and A recessed inlet is disposed within the manifold panel and aligned with the manifold inlet hole, the recessed inlet being configured to guide exhaust gas into the manifold inlet hole.

22. The decomposition chamber according to claim 21, wherein: The edge between the shunt end plate and the shunt panel is rounded, and The edge between the shunt endplate and the mixing collector wall is rounded.

23. The decomposition chamber according to claim 21, wherein, The angular distance between the first plane and the second plane is between 20 degrees and 70 degrees, including 20 degrees and 70 degrees.

24. The decomposition chamber according to claim 21, wherein the diversion pipe further comprises: The second end of the shunt tube body is opposite to the first end of the shunt tube body; The second diversion pipe flange is coupled to the second end of the diversion pipe body, the diversion pipe panel and the mixing collector wall; and The second shunt flange orifice is at least partially external to the second end of the shunt body, wherein the reducing agent is configured to flow through the second shunt flange orifice into the shunt cavity.

25. The decomposition chamber according to claim 24, wherein, The diverter is positioned such that the diverter body, the first diverter flange, the diverter panel, the diverter end plate, and the second diverter flange form a volume within which exhaust gas exiting from the diverter outlet hole can expand.

26. The decomposition chamber according to claim 21, wherein, The shunt also includes an outlet housing coupled to the shunt body and configured to provide an outlet housing cavity adjacent to the shunt cavity; The outlet housing forms at least a trapezoidal shape.

27. The decomposition chamber according to claim 21, wherein the diversion pipe further comprises: A baffle panel, which is adjacent to the outlet orifice of the splitter pipe and extends from the body of the splitter pipe toward the first splitter pipe flange, is configured to provide a vortex to the exhaust gas.

28. The decomposition chamber according to claim 21, wherein, The diverter also includes a guard that is adjacent to the diverter inlet orifice and extends into the diverter cavity. The guard is configured to reduce non-radial flow of exhaust gas into the diverter cavity via the diverter inlet orifice.

29. The decomposition chamber according to claim 21, wherein, The first shunt flange includes: Multiple first diversion pipe flange openings, through which exhaust gas is configured to enter the diversion pipe cavity; and A plurality of nozzles, each of which extends around one of the plurality of first splitter flange openings and protrudes from the first splitter flange into the splitter cavity, the plurality of nozzles being configured to increase the momentum of the exhaust gas and reduce the formation of deposits on the first splitter flange.

30. The decomposition chamber according to claim 21, further comprising: A cover, the cover being coupled to the first end of the shunt tube body and the first shunt tube flange; The first end includes a tab, which is configured to be received in a groove within the first shunt flange and to couple the shunt body to the first shunt flange.

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