Tail pipe, aftertreatment system and vehicle

Abstract

The utility model relates to a tail pipe, an aftertreatment system and a vehicle. The tail tube includes a tube portion, a cylindrical wall, an annular wall, and a constricted wall. The tube portion includes an inlet end and an outlet end. The inlet end is centered on an inlet axis. The outlet end is centered on the outlet axis. The outlet axis is parallel to and offset from the inlet axis. The cylindrical wall includes one or more drain holes. The annular wall is coupled to a downstream end of the cylindrical wall and extends radially inward from the cylindrical wall. A constriction wall is coupled to the annular wall and the inlet end of the tube portion. The constricted wall tapers so as to contract from the annular wall to the inlet end of the tube portion.

Description

Technical Field

[0001] The present application generally relates to an exhaust pipe of a post-treatment system for an internal combustion engine system. Background Art

[0002] A post-treatment system for an internal combustion engine system may include an exhaust pipe that conveys exhaust gas to an exhaust pipe having an outlet through which the exhaust gas is released into the surrounding environment. In some post-treatment systems, water may enter through the outlet and flow back into the exhaust pipe. In some cases, such water may cause components of the post-treatment system to malfunction. Summary of the Utility Model

[0003] An exhaust pipe includes a pipe portion, a cylindrical wall, an annular wall, and a converging wall. The pipe portion includes an inlet end and an outlet end. The inlet end is centered on an inlet axis. The outlet end is centered on an outlet axis. The outlet axis is parallel to the inlet axis and offset from the inlet axis. The cylindrical wall includes one or more drain holes. The annular wall is coupled to a downstream end of the cylindrical wall and extends radially inward from the cylindrical wall. The converging wall is coupled to the annular wall and the inlet end of the pipe portion. The converging wall is tapered so as to converge from the annular wall to the inlet end of the pipe portion.

[0004] In some embodiments, a minimum distance between the inlet axis and the outlet axis is in a range of 30 cm to 250 cm, including 30 cm and 250 cm.

[0005] In some embodiments, the pipe portion further includes an intermediate section disposed between the inlet end and the outlet end, the intermediate section being centered on an intermediate axis that is oblique to the inlet axis and the outlet axis.

[0006] In some embodiments, the inlet axis, the outlet axis, and the intermediate axis are disposed along a plane; and a first angle between the inlet axis and the intermediate axis along the plane is in a range of 110 degrees to 160 degrees, including 110 degrees and 160 degrees.

[0007] In some embodiments, a second angle between the outlet axis and the intermediate axis along the plane is in a range of 110 degrees to 160 degrees, including 110 degrees and 160 degrees.

[0008] In some embodiments, a diameter of at least one of the one or more drain holes is in a range of 5 mm to 30 mm, including 5 mm and 30 mm.

[0009] In some embodiments, a diameter of the pipe portion is in a range of 80 mm to 120 mm.

[0010] In some embodiments, the tailpipe further includes a connecting flange that is coupled to the upstream end of the cylindrical wall and extends radially outward from the cylindrical wall, and the connecting flange includes a plurality of connecting holes.

[0011] In some embodiments, at least one of the one or more drain holes has a first diameter; and at least one of the connecting holes has a second diameter that is smaller than the first diameter.

[0012] A post-treatment system includes: a catalyst member; an exhaust duct configured to receive exhaust gas from the catalyst member; and the above-described tailpipe; wherein the tailpipe is coupled to the exhaust duct.

[0013] In some embodiments, the exhaust duct is centered on the inlet axis.

[0014] In some embodiments, the post-treatment system further includes: an adapter; and a connecting flange that is coupled to the upstream end of the cylindrical wall and extends radially outward from the cylindrical wall. The exhaust duct includes: a pipe, and a duct flange that is coupled to the pipe, the duct flange surrounding the pipe and extending radially outward from the pipe. The adapter is coupled to the exhaust duct and the connecting flange.

[0015] In some embodiments, the adapter includes: a duct portion that is coupled to the duct flange and has a first diameter; and a connecting portion that is coupled to the connecting flange and has a second diameter.

[0016] A vehicle includes: a frame; and the above-described tailpipe; wherein the tailpipe is located in a part of the frame.

[0017] In some embodiments, the frame includes: side walls disposed along a side plane, the side walls including wall holes, a top plate disposed along a top plane that is perpendicular to the side plane and intersects the side plane along a first line, and a bottom plate disposed along a bottom plane. The bottom plane intersects the side plane along a second line that is parallel to the first line and offset from the first line. The bottom plane is separated from the side plane by a first angle that is in the range of 90 degrees and 150 degrees, including 90 degrees and 150 degrees, and the outlet end is aligned with the wall holes.

[0018] In some embodiments, the pipe portion further includes an intermediate section disposed between the inlet end and the outlet end, the intermediate section being centered on an intermediate axis that is oblique to the inlet axis and the outlet axis; and the intermediate axis is parallel to the bottom plane and offset from the bottom plane.

[0019] In some embodiments, the inlet axis is parallel to the top plane and offset from the top plane.

[0020] In some embodiments, the frame includes: sidewalls disposed along a side plane, the sidewalls including wall apertures; a top plate disposed along a top plane, the top plane being perpendicular to the side plane and intersecting the side plane along a first line; and a bottom plate disposed along a bottom plane. The bottom plane intersects the side plane along a second line, the second line being parallel to and offset from the first line. The bottom plane is separated from the side plane by a first angle in the range of 90 degrees to 150 degrees, inclusive of 90 degrees and 150 degrees. The outlet end extends through the wall aperture.

[0021] In some embodiments, the tube portion further includes an intermediate section disposed between the inlet end and the outlet end, the intermediate section being centered on an intermediate axis that is skewed with respect to the inlet axis and the outlet axis; and the intermediate axis is parallel to and offset from the bottom plane.

[0022] In some embodiments, the inlet axis is parallel to the top plane and offset from the top plane. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a block diagrammatic schematic illustration of an exemplary post-treatment system;

[0024] Figure 2 is a perspective view of an exemplary tailpipe in an exemplary frame of a vehicle;

[0025] Figure 3 is Figure 2 a side view of the tailpipe and frame shown;

[0026] Figure 4 is a perspective view of another exemplary tailpipe in a frame for a vehicle;

[0027] Figure 5 is Figure 4 a side view of the tailpipe shown;

[0028] Figure 6 is Figure 4 a side view of the other side of the tailpipe shown;

[0029] Figure 7 is Figure 4 a top view of the tailpipe shown;

[0030] Figure 8 is Figure 4 a bottom view of the tailpipe shown;

[0031] Figure 9 is Figure 4 a rear view of the tailpipe shown;

[0032] Figure 10 is Figure 4 a front view of the tailpipe shown; and

[0033] Figure 11 is Figure 4 a perspective view of a portion of the tailpipe shown.

[0034] It should be recognized that, for purposes of illustration, the drawings are schematic representations. The drawings are provided for the purpose of illustrating one or more embodiments and are expressly understood not to be used to limit the scope or meaning of the claims. DETAILED DESCRIPTION

[0035] The following is a more detailed description of various concepts and embodiments related to a tailpipe for a post - treatment system. The various concepts introduced above and discussed in more detail below can be implemented in any of a variety of ways, as the concepts described are not limited to any particular embodiment. Specific embodiments and examples of applications are provided primarily for illustrative purposes.

[0036] I. OVERVIEW OF AN EXAMPLE POST - TREATMENT SYSTEM

[0037] Figure 1 Depicted is a post - treatment system 100 configured to process exhaust released by an internal combustion engine. The post - treatment system 100 includes an exhaust duct system 104 configured to receive exhaust from the internal combustion engine. The post - treatment system 100 also includes a particulate filter 106 (e.g., a diesel particulate filter (DPF), etc.), the particulate filter 106 being coupled to the exhaust duct system 104 and configured to (e.g., constructed to, capable of, etc.) remove particulate matter, such as soot, from the exhaust flowing in the exhaust duct system 104. The particulate filter 106 includes an inlet and an outlet, the exhaust being received at the inlet and, after substantially filtering particulate matter from the exhaust and / or converting particulate matter to carbon dioxide, the exhaust exits at the outlet. In some embodiments, the particulate filter 106 may be omitted.

[0038] The post - treatment system 100 also includes a decomposition chamber 108 (e.g., a reactor, a reactor tube, a duct, etc.) disposed downstream of the particulate filter 106. The decomposition chamber 108 is configured to receive exhaust from the particulate filter 106. The post - treatment system 100 also includes a treatment fluid delivery system 102 coupled to the decomposition chamber 108. The treatment fluid delivery system 102 is configured to deliver a treatment fluid to the decomposition chamber 108. The treatment fluid may be, for example, a reducing agent (e.g., urea, diesel exhaust fluid (DEF), a urea water solution (UWS), an aqueous urea solution (e.g., AUS32, etc.), and / or other similar fluids) or a hydrocarbon fluid (e.g., fuel, oil, additives, etc.). When the reducing agent is introduced into the exhaust gas, it can promote the reduction of emissions of undesirable components (e.g., NO X etc.) in the exhaust gas. When the hydrocarbon fluid is introduced into the exhaust gas, the temperature of the exhaust gas can be increased (e.g., to promote the regeneration of components of the aftertreatment system 100, etc.). For example, the aftertreatment system 100 may include a spark plug 109 (e.g., an igniter, etc.), and the spark plug 109 is configured to increase the temperature of the exhaust gas by burning the hydrocarbon fluid in the exhaust gas. The decomposition chamber 108 includes an inlet and an outlet that are in fluid communication with the particulate filter 106. The inlet is for receiving the exhaust gas containing NO X emissions, and the outlet is for the exhaust gas, NO X emissions, ammonia, and / or the treatment fluid to flow to downstream components of the aftertreatment system 100.

[0039] The treatment fluid delivery system 102 includes a dispenser assembly 112 (e.g., a dosing module, etc.), and the dispenser assembly 112 is configured to (e.g., via an injector) dispense the treatment fluid into the decomposition chamber 108. The dispenser assembly 112 is mounted to the decomposition chamber 108 such that the dispenser assembly 112 can dispense the treatment fluid into the exhaust gas flowing through the exhaust duct system 104.

[0040] The dispenser assembly 112 is fluidly coupled to (e.g., the fluid is configured to communicate with the treatment fluid source 114, etc.) the treatment fluid source 114. The treatment fluid source 114 may include a plurality of treatment fluid sources 114. The treatment fluid source 114 may be, for example, a diesel exhaust fluid tank containing . A treatment fluid pump 116 (e.g., a supply unit, etc.) is used to pressurize the treatment fluid from the treatment fluid source 114 for delivery to the dispenser assembly 112. In some embodiments, the treatment fluid pump 116 is pressure-controlled (e.g., controlled to obtain a target pressure, etc.). The treatment fluid pump 116 may include a treatment fluid filter 118. Before the treatment fluid is provided to the internal components (e.g., pistons, vanes, etc.) of the treatment fluid pump 116, the treatment fluid filter 118 filters (e.g., strains, etc.) the treatment fluid. For example, the treatment fluid filter 118 can inhibit or prevent solids (e.g., solidified treatment fluid, contaminants, etc.) from being transferred to the internal components of the treatment fluid pump 116. In this way, the treatment fluid filter 118 can promote the extended desired operation of the treatment fluid pump 116. In some embodiments, the treatment fluid pump 116 is coupled (e.g., fastened, attached, fixed, welded, etc.) to the chassis of a vehicle associated with the aftertreatment system 100.

[0041] The dispenser assembly 112 includes at least one injector 120. Each injector 120 is configured to dispense a treatment fluid into the exhaust gas at an injection axis 119 (e.g., within the decomposition chamber 108, etc.). The aftertreatment system 100 may include a mixer 121 (e.g., a mixing body assembly, a vortex generating device, a vane plate, an inlet plate, a deflector plate, etc.). In some embodiments, at least a portion of the mixer 121 may be located within the decomposition chamber 108. In further embodiments, at least a portion of the mixer 121 may also be located within a duct of the exhaust duct system 104 (e.g., a duct upstream of the decomposition chamber 108, etc.). The mixer 121 is configured to receive the exhaust gas from the decomposition chamber 108 and the treatment fluid from the injector 120. The mixer 121 is further configured to facilitate the mixing of the exhaust gas and the treatment fluid. The mixer 121 is configured to facilitate the vortex (e.g., tumbling, rotating, etc.) of the exhaust gas and / or the treatment fluid and the mixing (e.g., combination, etc.) of the exhaust gas and the treatment fluid so as to disperse the treatment fluid within the exhaust gas downstream of the mixer 121. By using the mixer 121 to disperse the treatment fluid in the exhaust gas (e.g., to obtain an increased uniformity index, etc.), the reduction of emissions of undesired components in the exhaust gas is enhanced.

[0042] In some embodiments, the injection axis 119 extends into the mixer 121. The injection axis 119 may extend into the mixer 121 at an angle with respect to the central axis of the mixer 121. For example, in some embodiments, the injection axis 119 may be substantially coincident with the central axis of the mixer 121. In other embodiments, the injection axis 119 may be substantially perpendicular to the central axis of the mixer 121. In yet another embodiment, the injection axis 119 may be substantially parallel to the central axis of the mixer 121.

[0043] In some embodiments, the injector 120 is not directly coupled to the mixer 121. In these embodiments, the injector 120 and the mixer 121 may each be coupled to the same component (e.g., a housing, a panel, a chamber, a body, etc.). In other embodiments, the injector 120 is directly coupled to the mixer 121. In these embodiments, the injector 120 and the mixer 121 may also each be coupled to the same component. In some embodiments, the injector 120 is not disposed within the mixer 121. In other embodiments, the injector 120 may be at least partially disposed within the mixer 121.

[0044] In some embodiments, the treatment fluid 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 passes it through an air filter 126 disposed upstream of the air pump 122. Additionally, the air pump 122 supplies air to the dispenser assembly 112 via a conduit. In these embodiments, the dispenser assembly 112 is configured to mix air and the treatment fluid into an air-treatment fluid mixture and supply the air-treatment fluid mixture into the decomposition chamber 108. In other embodiments, the treatment fluid delivery system 102 does not include the air pump 122, the air source 124, and / or the air filter 126. In such embodiments, the dispenser assembly 112 is not configured to mix the treatment fluid with air.

[0045] The spark plug 109, the dispenser assembly 112, and the treatment fluid pump 116 are also electrically or communicatively coupled to a treatment fluid delivery system controller 128. The treatment fluid delivery system controller 128 can control the spark plug 109 to ignite the treatment fluid in the decomposition chamber 108. The treatment fluid delivery system controller 128 controls the dispenser assembly 112 to dispense the treatment fluid into the decomposition chamber 108. The treatment fluid delivery system controller 128 can also control the treatment fluid pump 116.

[0046] The treatment fluid delivery system controller 128 includes a processing circuit 130. The processing circuit 130 includes a processor 132 and a memory 134. The processor 132 can include a microprocessor, an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), etc. or a combination thereof. The memory 134 can include, but is not limited to, an electronic, optical, magnetic, or any other storage or transmission device capable of providing program instructions for the processor, ASIC, FPGA, etc. The memory 134 can include a memory chip, an electrically erasable programmable read only memory (EEPROM), an erasable programmable read only memory (EPROM), a flash memory, or any other suitable memory from which the treatment fluid delivery system controller 128 can read instructions. The instructions can include code from any suitable programming language. The memory 134 can include various modules that include instructions configured to be implemented by the processor 132.

[0047] In various embodiments, the treatment fluid delivery system controller 128 is configured to communicate with a central controller 136 (e.g., an engine control unit (ECU), an engine control module (ECM), etc.) of an internal combustion engine having the aftertreatment system 100. In some embodiments, the central controller 136 and the treatment fluid delivery system controller 128 are integrated into a single controller.

[0048] In some embodiments, the central controller 136 may communicate with a display device (e.g., a screen, a monitor, a touch screen, a head-up display (HUD), an 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., display a green light, display a "System OK" message, etc.) and an alarm state (e.g., display a flashing red light, display a "Service Required" message, etc.) based on communication from the central controller 136. By changing its state, the display device may provide an indication of the state of the process fluid delivery system 102 (e.g., in operation, service required, etc.) to a user (e.g., an operator, etc.).

[0049] The aftertreatment system 100 further includes a catalyst member 138 (e.g., an SCR (selective catalytic reduction) catalyst member, etc.) disposed downstream of the decomposition chamber 108. As a result, the process fluid is injected upstream of the catalyst member 138 such that the catalyst member 138 receives a mixture of the process fluid and the exhaust gas. The process fluid droplets undergo evaporation, pyrolysis, and hydrolysis processes to form non-NO X emissions (e.g., gaseous ammonia, etc.) within the exhaust duct system 104.

[0050] The catalyst member 138 includes an inlet in fluid communication with the decomposition chamber 108 (receiving the exhaust gas and the process fluid from the decomposition chamber 108) and an outlet in fluid communication with an outlet duct 140 of the exhaust duct system 104.

[0051] The aftertreatment system 100 may further include an oxidation catalyst member (e.g., a diesel oxidation catalyst (DOC), an ammonia oxidation catalyst (AMO) X ) etc.) in fluid communication with the exhaust duct system 104 (e.g., downstream of the catalyst member 138, upstream of the particulate filter 106, upstream of the decomposition chamber 108, etc.) to oxidize hydrocarbons and carbon monoxide in the exhaust gas.

[0052] In some embodiments, the particulate filter 106 may be positioned downstream of the decomposition chamber 108. For example, the particulate filter 106 and the catalyst member 138 may be combined into a single unit. In some embodiments, the dispenser assembly 112 may alternatively be positioned downstream or upstream of the turbocharger.

[0053] The post-treatment system 100 may also include a dispenser mounting bracket 142 (e.g., a mounting bracket, a coupler, a plate, etc.). The dispenser mounting bracket 142 couples the dispenser assembly 112 to a component of the post-treatment system 100 (e.g., the decomposition chamber 108, etc.). The dispenser mounting bracket 142 may be configured as an isolator (e.g., a vibration isolator, a thermal isolator, etc.). For example, the dispenser mounting bracket 142 may be configured to mitigate the transfer of heat from the exhaust gas passing through the exhaust duct system 104 to the dispenser assembly 112. In this way, the dispenser assembly 112 can operate more effectively and desirably. The dispenser mounting bracket 142 may be configured to mitigate the transfer of vibration from the components of the post-treatment system 100 to the dispenser assembly 112. Additionally, the dispenser mounting bracket 142 is configured to facilitate the reliable mounting of the dispenser assembly 112. This can reduce the manufacturing costs associated with the post-treatment system 100 and ensure the repeatable and desired mounting of the dispenser assembly 112.

[0054] In various embodiments, the dispenser mounting bracket 142 couples the dispenser assembly 112 to the decomposition chamber 108. In some embodiments, the dispenser mounting bracket 142 couples the dispenser assembly 112 to the exhaust duct system 104. For example, the dispenser mounting bracket 142 may couple the dispenser assembly 112 to the exhaust duct system 104 upstream of the decomposition chamber 108. In some embodiments, the dispenser mounting bracket 142 couples the dispenser assembly 112 to the particulate filter 106 and / or the catalyst member 138. The location of the dispenser mounting bracket 142 may vary depending on the application of the post-treatment system 100. For example, in some post-treatment systems 100, the dispenser mounting bracket 142 may be located at a more upstream position than in other post-treatment systems 100. Additionally, some post-treatment systems 100 may include multiple dispenser assemblies 112 and thus may include multiple dispenser mounting brackets 142.

[0055] The post-treatment system 100 may also include a mounting bracket assembly 144. The mounting bracket assembly 144 couples at least one of the components of the post-treatment system 100 (e.g., the specific filter 106, the decomposition chamber 108, etc.) to the chassis 146 (e.g., a frame, etc.). The chassis 146 is the structure to which the post-treatment system 100 is mounted (e.g., attached, coupled, etc.) via the mounting bracket assembly 144. The chassis 146 may support an internal combustion engine system associated with the post-treatment system 100 or other components of a vehicle.

[0056] The post-treatment system 100 also includes a tailpipe 148. The tailpipe 148 is coupled to the outlet duct 140 such that exhaust gas can flow from the outlet duct 140 to the tailpipe 148. The tailpipe 148 releases the treated exhaust gas into the surrounding environment.

[0057] In various embodiments, the tailpipe 148 is located within the frame 150. For example, a vehicle including the frame 150 and the chassis 146 can be configured such that the frame 150 is coupled to the chassis 146 and disposed above the chassis 146, and the tailpipe 148 is located within the frame 150.

[0058] II. Example Tailpipe Overview

[0059] Figure 5 A side view of a tailpipe 148 according to various embodiments is provided. The tailpipe 148 includes a tube portion 152. The tube portion 152 has an inlet end 154. The inlet end 154 is centered on an inlet axis 156. The tube portion 152 also has an outlet end 158. The outlet end 158 is centered on an outlet axis 160. The outlet axis 160 is parallel to the inlet axis 156 and offset from the inlet axis 156. A distance H1 separates the inlet axis 156 and the outlet axis 160. In some embodiments, the distance H1 is in the range of 30 centimeters to 250 centimeters, including 30 centimeters and 250 centimeters. The tube portion 152 also has a diameter D1. In some embodiments, the diameter D1 is in the range of 80 millimeters to 120 millimeters.

[0060] As Figure 5 shown, for example, the tube portion 152 further includes an intermediate section 162. The intermediate section 162 is disposed between the inlet end 154 and the outlet end 158. The intermediate section 162 is centered on an intermediate axis 164. The intermediate axis 164 is inclined with respect to the inlet axis 156 and the outlet axis 160. In some embodiments, the inlet axis 156, the outlet axis 160, and the intermediate axis 164 are disposed along plane A-A. An angle A1 is formed between the inlet axis 156 and the intermediate axis 164 along plane A-A. In some embodiments, the angle A1 is in the range of 110 degrees to 160 degrees, including 110 degrees and 160 degrees. An angle A2 is formed between the outlet axis 160 and the intermediate axis 164 along plane A-A. In some embodiments, the angle A2 is in the range of 110 degrees to 160 degrees, including 110 degrees and 160 degrees.

[0061] Figure 4 A perspective view of a tailpipe 148 according to various embodiments is shown. For example, as Figure 4 shown, the tailpipe 148 further includes a cylindrical wall 166. The cylindrical wall 166 includes one or more drain holes 168. The drain holes 168 are configured to drain water flowing from the outlet end 158 of the tailpipe 148 to the inlet end 154 of the tailpipe 148. At least one of the one or more drain holes 168 has a diameter D2. In some embodiments, the diameter D2 is in the range between 5 millimeters and 30 millimeters, including 5 millimeters and 30 millimeters.

[0062] For example, as Figure 4As shown, the tailpipe 148 further includes an annular wall 170. The annular wall 170 is coupled to a downstream end 172 of the cylindrical wall 166. The annular wall 170 extends radially inwardly from the cylindrical wall 166. A converging wall 174 is coupled to the annular wall 170. The converging wall 174 is also coupled to an inlet end 154 of the tube portion 152. The converging wall 174 tapers so as to converge from the annular wall 170 to the inlet end 154 of the tube portion 152.

[0063] In some embodiments, the tailpipe 148 further includes a connection flange 176. The connection flange 176 is coupled to an upstream end 177 of the cylindrical wall 166. The connection flange 176 extends radially outwardly from the cylindrical wall 166. The connection flange 176 includes a plurality of connection holes 178. At least one of the connection holes 178 has a diameter D3. At least one of the drain holes 168 has a diameter D2. In some embodiments, the diameter D3 is less than the diameter D2.

[0064] For example, as Figure 2 and Figure 3 shown, in various embodiments, the aftertreatment system 100 includes an exhaust duct 180 of the exhaust duct system 104. The exhaust duct 180 of the exhaust duct system 104 is configured to receive exhaust gas from the catalyst member 138. In some embodiments, the exhaust duct 180 has an exhaust duct conduit 182. The exhaust duct 180 also has a duct flange 184 coupled to the exhaust duct conduit 182. The duct flange 184 surrounds the exhaust duct conduit 182 and extends radially outwardly from the exhaust duct conduit 182. In some embodiments, the exhaust duct 180 of the exhaust duct system 104 is coupled to the tailpipe 148. The exhaust duct 180 is centered on the inlet axis 156.

[0065] As Figure 3 shown, in various embodiments, the aftertreatment system 100 further includes an adapter 186. The adapter 186 is coupled to the exhaust duct 180 of the exhaust duct system 104. The adapter 186 is also coupled to the duct flange 184. In some embodiments, the adapter 186 has a duct portion 188. The duct portion 188 is coupled to the duct flange 184. The duct portion 188 has a diameter D4. The adapter 186 also has a connection portion 190. The connection portion 190 is coupled to the connection flange 176. The connection portion 190 has a diameter D5.

[0066] In various embodiments, the aftertreatment system 100 is located within a vehicle 192 (e.g., a wheel loader). The vehicle 192 has a frame 150. The tailpipe 148 is located in a portion of the frame 150. As Figure 3As shown, for example, the frame 150 has side walls 194 disposed along side plane B-B. The side walls 194 include wall apertures 196. The frame 150 also has a top plate 198. The top plate 198 is disposed along top plane C-C. The top plane C-C is perpendicular to the side plane B-B. The top plane C-C intersects the side plane B-B along line L1. In some embodiments, the inlet axis 156 is parallel to the top plane C-C and offset from the top plane C-C. The frame 150 also has a bottom plate 200. The bottom plate 200 is disposed along bottom plane D-D. The bottom plane D-D intersects the side plane B-B along line L2. The line L2 is parallel to the line L1 and offset from the line L1. The bottom plane D-D is separated from the side plane B-B by an angle A3. In some embodiments, the angle A3 is in the range of 90 degrees and 150 degrees, including 90 degrees and 150 degrees. The bottom plane D-D of the frame 150 is parallel to the intermediate axis 164 and offset from the intermediate axis 164. In some embodiments, the outlet end 158 of the tube portion 152 is aligned with the wall aperture 196. In other embodiments, the outlet end of the tube portion 152 extends through the wall aperture 196.

[0067] III. Configuration of Exemplary Embodiments

[0068] Although this specification contains many specific implementation details, these should not be construed as limitations on the scope of what can be claimed, but rather as descriptions of features specific to particular implementations. Certain features described in the context of separate implementations in this specification can also be implemented combinatorially in a single implementation. Conversely, the various features described in the context of a single implementation can also be implemented separately or in any suitable sub-combination in multiple implementations. Moreover, although features may be described as acting in certain combinations and even initially claimed as such, one or more features from the claimed combination can in some cases be deleted from the combination, and the claimed combination can relate to a sub-combination or a variation of a sub-combination.

[0069] As used herein, the terms "substantially", "approximately", "about" and similar terms are intended to have a broad meaning consistent with the common and accepted usage by those of ordinary skill in the art to which the subject matter of this disclosure pertains. Those of skill in the art who review this disclosure should understand that these terms are intended to permit the description of certain features being described and claimed without restricting the scope of these features to the precise numerical ranges provided. Accordingly, these terms should be interpreted as representing non-substantive or immaterial modifications or variations of the described and claimed subject matter and being considered to be within the scope of the appended claims.

[0070] As used herein, the term "coupled" and like terms mean that two components are directly or indirectly connected to each other. Such connection can be fixed (e.g., permanent) or movable (e.g., removable or releasable). Such connection can be achieved by forming the two components or the two components and any additional intermediate components integrally into a single unit, or by attaching the two components or the two components and any additional intermediate components to each other.

[0071] As used herein, the term "fluidly coupled to" and the like mean that two components or objects have a path formed therebetween through which a fluid (such as air, process fluid, air - process fluid mixture, exhaust, hydrocarbon fluid, air - hydrocarbon fluid mixture) can flow, with or without intervening components or objects. Examples of fluid couplings or configurations for achieving fluid communication can include pipes, channels, or any other suitable components for enabling fluid flow from one component or object to another component or object.

[0072] It is important to note that the structures and arrangements of the various systems shown in the respective example embodiments are illustrative in nature and not restrictive. All changes and modifications within the spirit and / or scope of the described embodiments are to be protected. It should be understood that some features may not be necessary, and embodiments lacking various features may be considered within the scope of the present disclosure, which is defined by the appended claims. When the language "a portion" is used, the item can include a portion and / or the whole item, unless explicitly stated to the contrary.

[0073] In addition, in the context of a list of elements, the term "or" is used in its inclusive sense (rather than its exclusive meaning), such that when used to associate a list of elements, the term "or" means one, some, or all of the elements in the list. Unless otherwise explicitly stated, conjunctive phrases such as "at least one of X, Y, and Z" are understood in context to generally convey that the items, terms, etc. can be X, Y, Z, X and Y, X and Z, Y and Z, or X, Y, and Z (i.e., any combination of X, Y, and Z). Thus, unless otherwise specified, such conjunctive phrases generally do not intend and do not imply that certain embodiments require the presence of at least one of each of X, at least one of each of Y, and at least one of each of Z.

[0074] In addition, unless otherwise indicated, ranges of values used herein (e.g., W1 to W2, etc.) include the maximum and minimum values of the range (e.g., W1 to W2 includes W1 and includes W2, etc.). Further, unless otherwise stated, ranges of values (e.g., W1 to W2, etc.) do not necessarily require the inclusion of intermediate values within the range (e.g., W1 to W2 can include only W1 and W2, etc.).

Claims

1. A tail pipe, characterized in that: The tail pipe comprises: A tube portion, the tube portion comprising: an inlet end, the inlet end being centered about the inlet axis, and an outlet end portion centered about an outlet axis, the outlet axis being parallel to and offset from the inlet axis; a cylindrical wall, the cylindrical wall comprising one or more drainage holes; an annular wall coupled to the downstream end of the cylindrical wall and extending radially inwardly from the cylindrical wall; and A convergent wall is coupled to the annular wall and the inlet end of the tube portion, the convergent wall being gradually narrowed so as to converge from the annular wall to the inlet end of the tube portion.

2. The tail pipe according to claim 1, characterized in that: The minimum distance between the inlet axis and the outlet axis is in the range of 30 cm to 250 cm, inclusive.

3. The tail pipe according to claim 1, characterized in that: The tube portion further includes an intermediate section disposed between the inlet end and the outlet end, the intermediate section being centered about an intermediate axis that is oblique to the inlet axis and the outlet axis.

4. The tail pipe according to claim 3, characterized in that: The inlet axis, the outlet axis and the intermediate axis are arranged along a plane; and A first angle along the plane between the inlet axis and the intermediate axis is in the range of 110 degrees to 160 degrees, inclusive.

5. The tail pipe according to claim 4, characterized in that: A second angle along the plane between the outlet axis and the intermediate axis is in the range of 110 degrees to 160 degrees, inclusive.

6. The tail pipe according to any one of claims 1 to 5, characterized in that: The diameter of at least one of the one or more drainage holes is in the range between 5 mm and 30 mm, inclusive.

7. The tail pipe according to any one of claims 1 to 5, characterized in that: The diameter of the tube section is in the range of 80 mm to 120 mm.

8. The tail pipe according to any one of claims 1 to 5, characterized in that: The tail pipe further includes a connection flange coupled to an upstream end of the cylindrical wall and extending radially outward from the cylindrical wall, the connection flange including a plurality of connection holes.

9. The tail pipe according to claim 8, characterized in that: At least one of the one or more drainage holes has a first diameter; and At least one of the connection holes has a second diameter that is smaller than the first diameter.

10. A post-processing system, characterized in that: The post-processing system comprises: Catalyst components; an exhaust conduit configured to receive exhaust gas from the catalyst member; and The tail pipe according to any one of claims 1 to 9; Wherein, the tail pipe is connected to the exhaust duct.

11. The post-treatment system according to claim 10, characterized in that: The exhaust conduit is centered about the inlet axis.

12. The post-processing system according to claim 10 or 11, characterized in that: The post-processing system further comprises: adapter; and a connecting flange coupled to an upstream end of the cylindrical wall and extending radially outward from the cylindrical wall; Wherein, the exhaust duct comprises: pipeline, and a conduit flange coupled to the conduit, the conduit flange surrounding the conduit and extending radially outward from the conduit; and Wherein, the adapter is coupled to the exhaust duct and the connecting flange.

13. The post-treatment system according to claim 12, characterized in that: The adapter comprises: a conduit portion coupled to the conduit flange and having a first diameter; and A connecting portion is coupled to the connecting flange and has a second diameter.

14. A means of transport, characterized in that: The transportation means include: Framework; and The tail pipe according to claim 1 or 2; Wherein, the tail pipe is located in a portion of the frame.

15. The vehicle according to claim 14, characterized in that: The framework includes: A side wall, the side wall is arranged along the side plane, and the side wall includes a wall hole, a top plate disposed along a top plane that is perpendicular to the side plane and intersects the side plane along a first line, and A bottom plate, the bottom plate being arranged along a bottom plane; The bottom plane intersects the side plane along a second line, the second line being parallel to and offset from the first line; and The bottom plane is separated from the side plane by a first angle, the first angle being within the range of 90 degrees and 150 degrees, inclusive, and the outlet end is aligned with the wall aperture.

16. The vehicle according to claim 15, characterized in that: The tube portion further includes an intermediate section disposed between the inlet end and the outlet end, the intermediate section being centered on an intermediate axis that is oblique to the inlet axis and the outlet axis; and The intermediate axis is parallel to and offset from the bottom plane.

17. The vehicle according to claim 15 or 16, characterized in that: The inlet axis is parallel to the top plane and offset from the top plane.

18. The vehicle according to claim 14, characterized in that: The framework includes: A side wall, the side wall is arranged along the side plane, and the side wall includes a wall hole, a top plate disposed along a top plane that is perpendicular to the side plane and intersects the side plane along a first line, and A bottom plate, the bottom plate being arranged along a bottom plane; the bottom plane intersecting the side plane along a second line, the second line being parallel to and offset from the first line; The bottom plane is separated from the side plane by a first angle, the first angle being within the range of 90 degrees and 150 degrees, inclusive; and The outlet end extends through the wall aperture.

19. The vehicle according to claim 18, characterized in that: The tube portion further includes an intermediate section disposed between the inlet end and the outlet end, the intermediate section being centered on an intermediate axis that is oblique to the inlet axis and the outlet axis; and The intermediate axis is parallel to and offset from the bottom plane.

20. The vehicle according to claim 18 or 19, characterized in that: The inlet axis is parallel to the top plane and offset from the top plane.

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