Retainer assemblies for aftertreatment systems

Abstract

An aftertreatment system includes an aftertreatment component assembly, a first electronic component, a second electronic component, a retainer assembly, and a wire. The aftertreatment component assembly includes a housing and an aftertreatment component disposed within the housing. The retainer assembly includes a flange, a first projection, and a second projection. The flange has a first surface coupled to the housing. The flange also has a second surface opposite the first surface. The first projection extends from a second surface. The second projection extends from the second surface. The wire is coupled to the first electronic component and the second electronic component. The wire includes a first portion extending through a region between the first projection and the second projection. The wire also includes a second portion wrapped around the first projection and the second projection.

Description

Atty. Dkt. No.: 106389-9714RETAINER ASSEMBLIES FOR AFTERTREATMENT SYSTEMS CROSS-REFERNCE TO RELATED APPLICATION

[0001] The present application claims priority to and the benefit of U.S. Provisional Patent Application No. 63 / 762,222, filed on February 24, 2025, the entire disclosure of which is incorporated herein by reference for all purposes.TECHNICAL FIELD

[0002] The present disclosure relates generally to retainer assemblies for aftertreatment systems for use with internal combustion (IC) engines.BACKGROUND

[0003] The exhaust of internal combustion engines, such as diesel engines, includes nitrogen oxide (NOx) compounds. To reduce NOx emissions, a treatment fluid may be dosed into the exhaust by a doser assembly within an aftertreatment system. The treatment fluid facilitates conversion of a portion of the exhaust into non-NOx emissions, such as nitrogen (N2), carbon dioxide (CO2), and water (H2O), thereby reducing NOx emissions. These aftertreatment systems may include one or more electronic components. The electronic components may be configured to monitor and / or regulate aftertreatment system function. The electronic components may be connected by one or more wires. The wires are configured to allow for communication between the electronic components. Collection and routing of the wires can be cumbersome in some situations. For example, excess wire is often included and must be bundled on a case-by-case basis during installation, leading to increased installation times and undesirable complexities.SUMMARY

[0004] One or more electronic components may be configured to monitor and / or regulate aftertreatment system function. The electronic components are connected by one or more wires that are configured to allow for communication between the electronic components. However, depending on the orientation of the electronic components there may be excess wire that may be damaged due to exposure to high heat surfaces and / or relatively sharp edges.Atty. Dkt. No.: 106389-9714

[0005] Certain embodiments of the present invention may address these issues.

[0006] In one embodiment, an aftertreatment system includes an aftertreatment component assembly including a housing and an aftertreatment component disposed within the housing. The aftertreatment system includes a first electronic component and a second electronic component. The aftertreatment system further includes a retainer assembly including a flange having a first surface coupled to the housing, and a second surface opposite the first surface, a first projection extending from the second surface, and a second projection extending from the second surface. The aftertreatment system further includes a wire coupled to the first electronic component and the second electronic component, the wire including a first portion extending through a region between the first projection and the second projection and a second portion wrapped around the first projection and the second projection.

[0007] In one embodiment, which is combinable with any of the above-described embodiments, the first projection includes a first cylindrical surface. The first cylindrical surface is disposed opposite of the flange. The second projection includes a second cylindrical surface. The second cylindrical surface is disposed opposite of the flange.

[0008] In one embodiment, which is combinable with any of the above-described embodiments, the first cylindrical surface is substantially elliptic or stadium-shaped. The second cylindrical surface is substantially elliptic or stadium-shaped.

[0009] In one embodiment, which is combinable with any of the above-described embodiments, the aftertreatment system includes a fastener. The flange includes a retainer aperture. The housing includes a housing aperture. The fastener extends through the retainer aperture and the housing aperture.

[0010] In one embodiment, which is combinable with any of the above-described embodiments, the first projection includes a first lip, a second lip, and a first recessed portion. The first recessed portion is disposed between the first lip and the second lip. The second portion overlaps the first recessed portion. The second projection includes a third lip, a fourth lip, and a second recessed portion. The second recessed portion is disposed between the third lip and the fourth lip. The second portion overlaps the second recessed portion.Atty. Dkt. No.: 106389-9714

[0011] In one embodiment, which is combinable with any of the above-described embodiments, the first projection extends perpendicularly from the base plate and the second projection extends perpendicularly from the base plate.

[0012] In one embodiment, which is combinable with any of the above-described embodiments, the first projection extends parallel to the second projection.

[0013] In another embodiment, which is combinable with any combination of the above embodiments, the aftertreatment system includes an aftertreatment component including a housing and an aftertreatment component disposed within the housing. The aftertreatment system further includes a first electronic component, a second electronic component, and a post assembly coupled to the housing. The aftertreatment system further includes a retainer assembly separated from the housing by the post assembly. The retainer assembly includes a base plate that is rotatably coupled to the post assembly and a plurality of projections coupled to and extending from the base plate. The aftertreatment system further includes a first wire coupled to the first electronic component and the second electronic component. The first wire includes a first portion extending through a region between a subset of the projections and a second portion wrapped around the projections.

[0014] In one embodiment, which is combinable with any of the above-described embodiments, the aftertreatment system includes a fastener. The base plate includes a plate aperture. The post assembly includes a post aperture. The fastener extends through the plate aperture and the post aperture.

[0015] In one embodiment, which is combinable with any of the above-described embodiments, the aftertreatment system includes a third electronic component, a fourth electronic component, and a second wire. The second wire is coupled to the third electronic component and the fourth electronic component. The second wire includes a third portion that extends through a region between a subset of the projections. The second wire includes a fourth portion that is wrapped around the projections. The retainer assembly includes a separation plate. The separation plate includes a plurality of separation plate apertures. A portion of each of the projections extendsAtty. Dkt. No.: 106389-9714through a corresponding one of the separation plate apertures. The separation plate separates the first wire from the second wire.

[0016] In one embodiment, which is combinable with any of the above-described embodiments, the aftertreatment system includes a pawl and a spring coupled to the pawl. The retainer assembly includes a plurality of teeth disposed on the base plate. The spring facilitates engagement of the pawl with the teeth. Each of the teeth are rotatably coupled to the pawl such that the base plate is rotatable relative to the pawl.

[0017] In one embodiment, which is combinable with any of the above-described embodiments, the plurality of projections are cylindrical.

[0018] In one embodiment, which is combinable with any of the above-described embodiments, the plurality of projections are disposed along an outer perimeter of the base plate.

[0019] In one embodiment, which is combinable with any of the above-described embodiments, the base plate comprises an outer sleeve disposed in the center of the base plate. A portion of the post assembly is disposed in the outer sleeve such that the base plate is rotatable relative to the post assembly.

[0020] In one embodiment, which is combinable with any of the above-described embodiments, the plurality of projections extend perpendicularly from the base plate.

[0021] This summary is illustrative only and is not intended to be in any way limiting. Other aspects, inventive features, and advantages of the devices or processes described herein will become apparent in the detailed description set forth herein, taken in conjunction with the accompanying figures, wherein like reference numerals refer to like elements.BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The foregoing and other features of the present disclosure will become more fully apparent from the following description and appended claims taken in conjunction with the accompanying drawings. Understanding that these drawings depict only several implementations in accordance with the disclosure and are therefore not to be consideredAtty. Dkt. No.: 106389-9714limiting of its scope, the disclosure will be described with additional specificity and detail through use of the accompanying drawings.

[0023] FIG. 1 is a block schematic diagram of an example power system including an aftertreatment system;

[0024] FIG. 2 is a block schematic diagram of the aftertreatment system including a retainer assembly;

[0025] FIG. 3 is a block schematic diagram of a portion of an example aftertreatment system including a retainer assembly;

[0026] FIG. 4 is a perspective view of a portion of an example aftertreatment system including a retainer assembly;

[0027] FIG. 5 is a perspective view of an example retainer assembly;

[0028] FIG. 6 is a perspective view of another example retainer assembly;

[0029] FIG. 7 is another perspective view of the retainer assembly of FIG. 6;

[0030] FIG. 8 is another perspective view of the retainer assembly of FIG. 6;

[0031] FIG. 9 is a perspective view of a portion of the retainer assembly of FIG. 6;

[0032] FIG. 10 is a perspective view of another portion of the retainer assembly of FIG. 6;

[0033] FIG. 11 is a perspective view of another portion of the retainer assembly of FIG. 6; and

[0034] FIG. 12 is a perspective view of another portion of the retainer assembly of FIG. 6.

[0035] Reference is made to the accompanying drawings throughout the following detailed description. In the drawings, similar symbols typically identify similar components unless context dictates otherwise. The illustrative implementations described in the detailed description, drawings, and claims are not meant to be limiting. Other implementations may be utilized, and other changes may be made, without departing from the spirit or scope of theAtty. Dkt. No.: 106389-9714subject matter presented here. It will be readily understood that the aspects of the present disclosure, as generally described herein and illustrated in the figures, can be arranged, substituted, combined, and designed in a wide variety of different configurations, all of which are explicitly contemplated and made part of this disclosure.DETAILED DESCRIPTION

[0036] Following below are more detailed descriptions of various concepts related to, and implementations of a retainer assembly for an aftertreatment system. The various concepts introduced above and discussed in greater detail below may be implemented in any of a number of ways, as the described concepts are not limited to any particular manner of implementation. Examples of specific implementations and applications are provided primarily for illustrative purposes.I. Overview

[0037] An aftertreatment system includes electronic components (e.g., sensors, etc.) that monitor the status of the aftertreatment system (e.g. NOx levels, soot levels, temperature, etc.). The electronic components are coupled to a wire which facilitates communication between the electronic components. In some situations, there is excess wire between two electronic components. In some systems, the excess wire is coiled, by hand, and retained. These systems may fail to prevent exposure of the wire to relatively sharp edges or high heat surfaces (e g., 500 degrees Celsius, etc.) that may cause damage to the wire.

[0038] Implementations described herein are directed towards an aftertreatment system equipped with a retainer assembly. The retainer assembly is configured to coil and retain excess wire away from relatively sharp edges and high heat surfaces of the aftertreatment system. The retainer assembly facilitates repeatable coiling of the wire to a target diameter. The retainer assembly may be rotatable relative to a housing of an aftertreatment component assembly.

[0039] In some embodiments, the retainer assembly facilitates coiling of more than one wire. In such embodiments, the retainer assembly includes a separation plate configured to facilitate the separation of a first wire and a second wire. In some embodiments, the retainer assembly is coupled to a post assembly providing separation of the retainer assembly, and therefore theAtty. Dkt. No.: 106389-9714wire coiled and retained on the retainer assembly, from the housing. In this way, the retainer assembly assists in mitigating risk of damage to the wire. In some embodiments, the aftertreatment system includes more than one retainer assembly.II. Overview of Example Power System

[0040] FIG. 1 depicts a power system 100. In some embodiments, the power system 100 is a vehicle power system or other power system. The power system 100 includes an engine 104 (e.g., an internal combustion engine, etc.). The engine 104 is configured to (e.g., structured to, able to, etc.) receive a fluid mixture of fuel (e.g., diesel, gasoline, hydrogen, biodiesel, etc.) and air, combust the fluid mixture, and provide exhaust as a result of the combustion of the fluid mixture.

[0041] The power system 100 also includes a battery 106 (e.g., an on-vehicle battery, an energy storage device, capacitor, fuel cell, etc.). The battery 106 is configured to provide electrical power to one or more components of the power system 100. For example, the battery 106 may provide electrical power to fuel igniters (e.g., spark plugs, glow plugs, etc.), controllers (e.g., engine control unit, etc.), lights, an air conditioning unit, motors, displays, or the like, of the power system 100. Additionally, the battery 106 may be utilized for powering the power system 100 (e.g., for powering electric driving motors where the power system 100 is a vehicle power system and the vehicle power system includes a hybrid vehicle, etc.). In embodiments in which the engine 104 is a spark-ignition engine, the battery 106 may be electrically or communicatively coupled to the engine 104 and provide electrical power to spark plugs of the engine 104.

[0042] The power system 100 also includes an alternator 108 (e.g., a generator, etc.). The alternator 108 is configured to convert mechanical power produced by the engine 104 into electrical power. The alternator 108 may be electrically or communicatively coupled to the battery 106 and configured to provide the electrical power to the battery 106 (i.e., to charge the battery 106, etc.). For example, in embodiments where the power system 100 is a vehicle power system that includes a vehicle that is moving, rotational energy provided by the engineAtty. Dkt. No.: 106389-9714104 may be provided to movement members (e.g., wheels, etc.) and the alternator 108 via a serpentine belt drive system. The alternator 108 may charge the battery 106.

[0043] The power system 100 further includes an aftertreatment system 110. The aftertreatment system 110 is disposed downstream of the engine 104. The aftertreatment system 110 is configured to treat the exhaust produced by the engine 104. In this way, the aftertreatment system 110 may facilitate reduction of undesirable byproducts of combustion of the fuel by the engine 104.III. Overview of Example Aftertreatment System

[0044] As illustrated in FIG. 2, the aftertreatment system 110 includes an exhaust conduit system 112. The exhaust conduit system 112 is configured to receive the exhaust from the engine 104 via an inlet 114. The aftertreatment system 110 further includes a particulate filter 116 (e.g., a diesel particulate filter (DPF), etc ). The particulate filter 116 is coupled to the exhaust conduit system 112 and configured to remove particulate matter, such as soot, from the exhaust flowing in the exhaust conduit system 112. The particulate filter 116 includes an inlet, where the exhaust is received, and an outlet, where the exhaust exits after having particulate matter substantially filtered from the exhaust and / or converting the particulate matter into CO2.In some embodiments, the particulate filter 116 is omitted from the aftertreatment system 110.

[0045] The aftertreatment system 110 further includes a decomposition chamber 118 (e.g., reactor, reactor pipe, conduit, housing, etc.) disposed downstream of the particulate filter 116. The decomposition chamber 118 is configured to receive the exhaust from the particulate filter 116. The aftertreatment system 110 further includes a treatment fluid delivery system 120 coupled to the decomposition chamber 118. The treatment fluid delivery system 120 is configured to deliver treatment fluid to the decomposition chamber 118. The treatment fluid may be, for example, a reductant (e.g., a urea, a diesel exhaust fluid (DEF), Adblue®, a urea water solution (UWS), an aqueous urea solution (e.g., AUS32, etc.), and / or other similar fluids) or a hydrocarbon fluid (e.g., a fuel, an oil, an additive, etc.). When the reductant is introduced into the exhaust, reduction of emission of undesirable components (e.g., NOx, etc.) in the exhaust may be facilitated. When the hydrocarbon fluid is introduced into the exhaust, theAtty. Dkt. No.: 106389-9714temperature of the exhaust may be increased (e.g., to facilitate regeneration of components of the aftertreatment system 110, etc.). For example, the aftertreatment system 110 may include an igniter 122 (e.g., spark plug, etc.) configured to increase the temperature of the exhaust by combusting the hydrocarbon fluid within the exhaust. The decomposition chamber 118 includes an inlet in fluid communication with the particulate filter 116 to receive the exhaust containing NOx emissions and an outlet for the exhaust, NOx emissions, ammonia, and / or the treatment fluid to flow to downstream components of the aftertreatment system 110.

[0046] The treatment fluid delivery system 120 includes a doser assembly 124 (e.g., a dosing module, etc.) configured to dose the treatment fluid into the decomposition chamber 118 (e.g., via an injector). The doser assembly 124 is coupled to (e.g., mounted to, affixed to, fastened to, etc.) the decomposition chamber 118 such that the doser assembly 124 may dose the treatment fluid into the exhaust flowing through the exhaust conduit system 112.

[0047] The doser assembly 124 is fluidly coupled to (e.g., fluidly configured to communicate with, etc.) a treatment fluid source 126. The treatment fluid source 126 may include multiple treatment fluid sources 126. The treatment fluid source 126 may be, for example, a diesel exhaust fluid tank containing Adblue®. A treatment fluid pump 128 (e.g., a supply unit, etc.) is used to pressurize the treatment fluid from the treatment fluid source 126 for delivery to the doser assembly 124. In some embodiments, the treatment fluid pump 128 is pressure-controlled (e.g., controlled to obtain a target pressure, etc.). The treatment fluid pump 128 may include a treatment fluid filter 130. The treatment fluid filter 130 filters (e.g., strains, etc.) the treatment fluid prior to the treatment fluid being provided to internal components (e.g., pistons, vanes, etc.) of the treatment fluid pump 128. For example, the treatment fluid filter 130 may inhibit or prevent the transmission of solids (e.g., solidified treatment fluid, contaminants, etc.) to the internal components of the treatment fluid pump 128. In this way, the treatment fluid filter 130 may facilitate prolonged desirable operation of the treatment fluid pump 128. In embodiments where the power system 100 is a vehicle power system and the vehicle power system includes a vehicle, the treatment fluid pump 128 is coupled (e.g., fastened, attached, affixed, welded, etc.) to a chassis of the vehicle.Atty. Dkt. No.: 106389-9714

[0048] The doser assembly 124 includes at least one injector 132. Each of the injectors 132 is configured to dose the treatment fluid into the exhaust (e.g., within the decomposition chamber 118, etc.) at an injection axis 134. The aftertreatment system 110 may include a mixer 136 (e.g., a mixing body assembly, a swirl generating device, a vane plate, an inlet plate, a deflector plate, etc.). In some embodiments, at least a portion of the mixer 136 may be located within the decomposition chamber 118. In further embodiments, at least a portion of the mixer 136 may also be located in a conduit of the exhaust conduit system 112 (e.g., a conduit upstream of the decomposition chamber 118, etc.). The mixer 136 is configured to receive the exhaust from the decomposition chamber 118 and the treatment fluid from the injector 132.

[0049] The mixer 136 is also configured to facilitate mixing of the exhaust and the treatment fluid. The mixer 136 is configured to facilitate swirling (e.g., tumbling, rotation, etc.) of the exhaust and / or the treatment fluid and mixing (e.g., combination, etc.) of the exhaust and the treatment fluid so as to disperse the treatment fluid within the exhaust downstream of the mixer 136. By dispersing the treatment fluid within the exhaust (e.g., to obtain an increased uniformity index, etc.) using the mixer 136, reduction of emission of undesirable components in the exhaust is enhanced.

[0050] In some embodiments, the injection axis 134 extends into the mixer 136. The injection axis 134 may extend into the mixer 136 at an angle relative to a central axis of the mixer 136. For example, in some embodiments, the injection axis 134 may be substantially coincident with the central axis of the mixer 136. In other embodiments, the injection axis 134 may be substantially perpendicular to the central axis of the mixer 136. In yet other embodiments, the injection axis 134 may be substantially parallel to the central axis of the mixer 136.

[0051] In some embodiments, the injector 132 is not directly coupled to the mixer 136. In these embodiments, the injector 132 and the mixer 136 may each be coupled to a same component (e.g., a housing, a panel, a chamber, a body, etc.). In other embodiments, the injector 132 is directly coupled to the mixer 136. In these embodiments, the injector 132 and the mixer 136 may also each be coupled to the same component. In some embodiments, the injector 132 is not disposed within the mixer 136. In other embodiments, the injector 132 may be at least partially disposed within the mixer 136.Atty. Dkt. No.: 106389-9714

[0052] The treatment fluid delivery system 120 may include an air pump 138. The air pump 138 draws air from an air source 140 (e.g., an air intake, etc.) through an air filter 142 disposed upstream of the air pump 138 and provides the air to the doser assembly 124 via a conduit. In these embodiments, the doser assembly 124 is configured to mix the air and the treatment fluid into an air-treatment fluid mixture and to provide the air-treatment fluid mixture into the decomposition chamber 118. In other embodiments, the treatment fluid delivery system 120 does not include the air pump 138, the air source 140, and / or the air filter 142. In such embodiments, the doser assembly 124 is not configured to mix the treatment fluid with the air.

[0053] The aftertreatment system 110 includes an aftertreatment component assembly 180, as shown in FIG. 1. The aftertreatment component assembly 180 further includes an aftertreatment component 144. In some embodiment, the aftertreatment component 144 includes a catalyst member (e.g., a Selective Catalytic Reduction (SCR) catalyst member, etc.) disposed downstream of the decomposition chamber 118. As a result, the treatment fluid is injected upstream of the catalyst member such that the catalyst member receives a mixture of the treatment fluid and exhaust. Droplets of the treatment fluid undergo processes of evaporation, thermolysis, and hydrolysis to form non-NOx emissions (e.g., gaseous ammonia, etc.) within the exhaust conduit system 112. In other embodiments, the aftertreatment component 144 includes an oxidation catalyst member (e.g., a diesel oxidation catalyst (DOC), an ammonia oxidation catalyst (AMOx), etc.). In yet other embodiments, the aftertreatment component 144 includes a particulate filter (e.g., the particulate filter 116, etc.).

[0054] The aftertreatment component 144 includes an upstream face in fluid communication with the decomposition chamber 118 from which the exhaust and the treatment fluid are received and a downstream face in fluid communication with an outlet 146 of the exhaust conduit system 112. The outlet 146 releases the treated exhaust into an ambient environment.

[0055] The aftertreatment system 110 may further include an oxidation catalyst member (e.g., a diesel oxidation catalyst (DOC), an ammonia oxidation catalyst (AMOx), etc.) in fluid communication with the exhaust conduit system 112 (e.g., downstream of the aftertreatment component 144, upstream of the aftertreatment component 144, upstream of the particulateAtty. Dkt. No.: 106389-9714filter 116, upstream of the decomposition chamber 118, etc.) to oxidize hydrocarbons and carbon monoxide in the exhaust.

[0056] In some embodiments, the particulate filter 116 may be positioned downstream of the decomposition chamber 118. For instance, the particulate filter 116 and the aftertreatment component 144 may be combined into a single unit.

[0057] The aftertreatment system 110 may further include a doser mounting bracket 148 (e.g., a coupler, a plate, etc.). The doser mounting bracket 148 couples the doser assembly 124 to a component of the aftertreatment system 110 (e.g., the decomposition chamber 118, etc.). The doser mounting bracket 148 may be configured as an insulator (e.g., a vibrational insulator, a thermal insulator, etc.). For example, the doser mounting bracket 148 may be configured to mitigate the transfer of heat from the exhaust passing through the exhaust conduit system 112 and / or the decomposition chamber 118 to the doser assembly 124. In this way, the doser assembly 124 is capable of operating more efficiently. The doser mounting bracket 148 may be configured to mitigate transfer of vibrations from components of the aftertreatment system 110 (e.g., the exhaust conduit system 112, the decomposition chamber 118, etc.) to the doser assembly 124. The doser mounting bracket 148 may be configured to aid in reliable installation of the doser assembly 124, thereby decreasing manufacturing costs associated with the aftertreatment system 110 and ensuring repeated desirable installation of the doser assembly 124.

[0058] In various embodiments, the doser mounting bracket 148 couples the doser assembly 124 to the decomposition chamber 118. In some embodiments, the doser mounting bracket 148 couples the doser assembly 124 to a conduit of the exhaust conduit system 112. For example, the doser mounting bracket 148 may couple the doser assembly 124 to a conduit of the exhaust conduit system 112 that is upstream of the decomposition chamber 118. In some embodiments, the doser mounting bracket 148 couples the doser assembly 124 to the particulate filter 116 and / or the aftertreatment component 144. The location of the doser mounting bracket 148 may be varied depending on the application of the aftertreatment system 110. For example, in some aftertreatment systems 110, the doser mounting bracket 148 may be located further upstream than in other aftertreatment systems 110. Furthermore, some aftertreatment systems 110 mayAtty. Dkt. No.: 106389-9714include multiple doser assemblies 124 and therefore may include multiple doser mounting brackets 148.

[0059] As illustrated in FIGS. 1 and 2, the power system 100 further includes a controller 150 (e.g., a vehicle power system controller, a treatment fluid delivery system controller, etc.). The controller 150 is electrically or communicatively coupled to the igniter 122. The controller 150 may control the igniter 122 to ignite the treatment fluid in the decomposition chamber 118. For example, where the controller 150 may cause the igniter 122 to provide an electrical arc in a region traversed by the hydrocarbon fluid, and the electrical arc may ignite the hydrocarbon fluid. The controller 150 is electrically or communicatively coupled to the doser assembly 124. The controller 150 may control the doser assembly 124 to dose the treatment fluid into the decomposition chamber 118. The controller 150 is electrically or communicatively coupled to the treatment fluid pump 128 and / or the air pump 138. The controller 150 may also control operations of the treatment fluid pump 128 and / or the air pump 138. The controller 150 is electrically or communicatively coupled to the engine 104. The controller 150 may also control operations of the engine 104 (e.g., spark plug ignition, fuel injection, etc.). The controller 150 is also electrically or communicatively coupled to the battery 106 and / or the alternator 108. The controller may also control power input and / or power output from and / or to the battery 106 and / or the alternator 108.

[0060] The controller 150 includes a processing circuit 152. The processing circuit 152 includes a processor 154 and a memory 156. The processor 154 may include a microprocessor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), etc., or combinations thereof. The memory 156 may include, but is not limited to, electronic, optical, magnetic, or any other storage or transmission device capable of providing the processor 154 with program instructions. This memory 156 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 controller 150 can read instructions. The instructions may include code from any suitable programming language. The memory 156 may include various modules that include instructions which are configured to be implemented by the processor 154.Atty. Dkt. No.: 106389-9714

[0061] The controller 150 may be configured to communicate with a central controller 160 (e.g., engine control unit (ECU), engine control module (ECM), etc.) of the engine 104. In some embodiments, the central controller 160 and the controller 150 are integrated into a single controller.

[0062] In some embodiments, the central controller 160 is communicable with a display device (e.g., a screen, a monitor, a touch screen, a heads up display (HUD), an indicator light, etc.). The display device may be configured to change state in response to receiving information from the central controller 160. 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 blinking red light, displaying a “SERVICE NEEDED” message, etc.) based on a communication from the central controller 160. By changing state, the display device may provide an indication to a user (e.g., an operator, a technician, etc.) of a status (e.g., operation, in need of service, etc.) of the treatment fluid delivery system 120 and / or the power system 100.

[0063] As illustrated in FIG. 1 the aftertreatment system 110 further includes an aftertreatment component assembly 180. The aftertreatment component assembly 180 includes an aftertreatment component 144, as previously described. The aftertreatment component assembly 180 includes a housing 170. The housing 170 is configured to have the aftertreatment component 144 disposed within. The housing 170 protects the aftertreatment component 144 from outside elements (e.g., debris, etc ).

[0064] As illustrated in FIG. 3 the aftertreatment system 110 includes a first electronic component 202 that is coupled to the housing 170. The first electronic component 202 may be configured to monitor and / or regulate aftertreatment component assembly 180 function (e.g., temperature levels, NOx levels, soot levels, etc.). In some embodiments, the first electronic component 202 is a sensor (e.g., a temperature sensor, NOx sensor, PM sensor, DPF sensor, etc.). In some embodiments, the first electronic component 202 is or includes an actuator (e.g., the injector 132, etc.). In other embodiments, the first electronic component 202 is the controller 150. In other embodiments the first electronic component 202 is the doser assembly 124. In other embodiments, the first electronic component 202 is the igniter 122. In other embodiments,Atty. Dkt. No.: 106389-9714the first electronic component 202 is at least one of a doser (e.g., the doser assembly 124, etc.), a heater (e.g., a heater configured to heat exhaust upstream of the particulate filter 116 and / or the aftertreatment component, etc.), or an ignitor (e.g., configured to ignite treatment fluid within the exhaust).

[0065] The aftertreatment system 110 includes a second electronic component 204. The second electronic component 204 is coupled to the housing 170. The second electronic component 204 is configured to monitor and regulate the aftertreatment component assembly 180 function. In some embodiments, the second electronic component 204 is a sensor (e.g., a temperature sensor, NOx sensor, PM sensor, DPF sensor, etc.). In some embodiments, the second electronic component 204 is an actuator (e.g., injector 132, etc.) In other embodiments, the second electronic component 204 is the controller 150. In other embodiments, the second electronic component 204 is the igniter 122. In other embodiments, the second electronic component 204 is the doser assembly 124. In other embodiments, the second electronic component 204 is at least one of a doser, a heater, or an ignitor.

[0066] In some embodiments, the first electronic component 202 is the controller 150 and the second electronic component 204 is a sensor, an actuator, the igniter 122, or the doser assembly 124. In some embodiments, the first electronic component 202 is a sensor and the second electronic component 204 is a sensor.

[0067] In some embodiments, the aftertreatment system 110 includes a third electronic component 206. The third electronic component 206 is coupled to the housing 170. The third electronic component 206 is configured to monitor and regulate the aftertreatment component assembly 180 function. In some embodiments, the third electronic component 206 is a sensor (e.g., a temperature sensor, NOx sensor, PM sensor, DPF sensor, etc.). In some embodiments, the third electronic component 206 is an actuator (e.g., injector 132, etc.). In other embodiments, the third electronic component 206 is the controller 150. In other embodiments, the third electronic component 206 is the igniter 122. In other embodiments the third electronic component 206 is the doser assembly 124. In other embodiments, the third electronic component 206 is at least one of a doser, a heater, or an ignitor.Atty. Dkt. No.: 106389-9714

[0068] In some embodiments, the aftertreatment system 110 includes a fourth electronic component 208. The fourth electronic component 208 is coupled to the housing 170. The fourth electronic component 208 is configured to monitor and regulate the aftertreatment component assembly 180 function. In some embodiments, the fourth electronic component 208 is a sensor (e.g., a temperature sensor, NOx sensor, PM sensor, DPF sensor, etc.). In some embodiments, the fourth electronic component 208 is an actuator (e.g., injector 132, etc.). In other embodiments, the fourth electronic component 208 is the controller 150. In other embodiments, the fourth electronic component 208 is the igniter 122. In other embodiments, the fourth electronic component 208 is the doser assembly 124. In other embodiments, the fourth electronic component 208 is at least one of a doser, a heater, or an ignitor.

[0069] In some embodiments, the third electronic component 206 is the controller 150 and the fourth electronic component 208 is a sensor, an actuator, the igniter 122, or the doser assembly 124. In some embodiments, the third electronic component 206 is a sensor and the fourth electronic component 208 is a sensor.

[0070] The aftertreatment system 110 includes a first wire 210 (e.g., metal core with rubber insulation, etc.). The first wire 210 is coupled to the first electronic component 202 and the second electronic component 204. The first wire 210 is configured to allow for communication between the first electronic component 202 and the second electronic component 204. In some embodiments, the first wire 210 is a power wire that supplies power to the first electronic component 202 or the second electronic component 204. In other embodiments, the first wire 210 is a data wire that transmits sensor signals (e.g., analog signals, digital signals, etc.), control commands (e.g., ECM commands to actuators, etc.), or diagnostic information (e.g., diagnostic information from sensors to the ECM, etc.). In other embodiments, the first wire 210 is configured to be a ground connection.

[0071] In some embodiments, the first electronic component 202 and second electronic component 204 are coupled to more than one first wire 210. For example, the first electronic component 202 and second electronic component 204 are coupled to a power wire supplying power from the first electronic component 202 to the second electronic component 204 and a data wire transmitting data from the second electronic component 204 to the first electronicAtty. Dkt. No.: 106389-9714component 202. In another example, the first electronic component 202 and the second electronic component 204 are coupled to a power wire providing power from the first electronic component 202 to the second electronic component 204 and a ground wire providing ground connection. In embodiments with the first electronic component 202, the second electronic component 204, and the third electronic component 206, the first wire 210 may be coupled to the first electronic component 202 and the second electronic component 204 and another of the first wire 210 may be coupled to the first electronic component 202 and the third electronic component 206 (e.g., a data wire coupled to a sensor and the ECM and data wire coupled to a actuator and the ECM). In some embodiments, there is excess first wire 210 between the first electronic component 202 and the second electronic component 204, as shown in FIG. 4, for example.

[0072] In some embodiments, the aftertreatment system 110 includes a second wire 212 (e.g., metal core with rubber insulation, etc.). The second wire 212 is coupled to the third electronic component 206 and the fourth electronic component 208. The second wire 212 is configured to allow for communication between the third electronic component 206 and the fourth electronic component 208. In some embodiments, the second wire 212 is identical to the first wire 210. In some embodiments, the second wire 212 is a power wire that supplies power to the third electronic component 206 or the fourth electronic component 208. In other embodiments, the second wire 212 is a data wire that transmits sensor signals (e.g., analog signals, digital signals, etc.), control commands (e.g., ECM commands to actuators, etc.), or diagnostic information (e.g., diagnostic information from sensors to the ECM, etc.). In other embodiments, the second wire 212 is configured to be a ground connection.

[0073] In some embodiments, the third electronic component 206 and the fourth electronic component 208 are coupled to more than one of the second wire 212. For example, the third electronic component 206 and the fourth electronic component 208 are coupled to a power wire supplying power from the third electronic component 206 to the fourth electronic component 208 and a data wire transmitting data from the fourth electronic component 208 to the third electronic component 206. In another example, the third electronic component 206 and the fourth electronic component 208 are coupled to a power wire providing power from the third electronic component 206 to the fourth electronic component 208 and a ground wire providingAtty. Dkt. No.: 106389-9714ground connection. In some embodiments, there is excess of the second wire 212 between the third electronic component 206 and the fourth electronic component 208.

[0074] In some embodiments, the aftertreatment system 110 includes a post assembly 602 (e.g., a rod), as shown in FIG. 6. The post assembly 602 is coupled to the housing 170. The post assembly 602 is configured to support the separation of the first wire 210 and the second wire 212 from the housing 170 through the retainer assembly 200.

[0075] In various embodiments, the post assembly 602 includes a threaded post that is threadably coupled to a threaded opening in the housing 170. In other embodiments, the post assembly 602 includes a post that is welded to the housing 170.

[0076] The aftertreatment system 110 further includes a retainer assembly 200. The retainer assembly 200 is configured to facilitate coiling of the first wire 210 and the second wire 212 and provides separation of the first wire 210 and the second wire 212 from the housing 170 of the aftertreatment component assembly 180.IV. Overview of First Example Retainer Assembly

[0077] FIGS. 4 and 5 depict various portions of examples of the retainer assembly 200, according to various embodiments. As described herein, the retainer assembly 200 is configured to allow for coiling of a portion (e.g., a first portion 414, a second portion 416, etc.) of the first wire 210 and a portion (e.g., a third portion 612, a fourth portion 614, etc.) of the second wire 212. The retainer assembly 200 is configured to provide separation of a portion of the first wire 210 (e.g., the coiled portion of the first wire 210, etc.) and a portion of the second wire 212 (e.g., the coiled portion of the second wire 212, etc.) from the housing 170.

[0078] The retainer assembly 200 includes a flange 402. The flange 402 further includes a retainer aperture 502. The flange 402 includes a first surface 404. The retainer assembly 200 also includes a fastener 406 (e.g., screw, bolt, etc.). The first surface 404 is coupled to the housing 170 via the fastener 406. The fastener 406 extends through the retainer aperture 502 and a housing aperture (e.g., threaded opening, etc.) disposed on the housing 170. In someAtty. Dkt. No.: 106389-9714embodiments, the fastener 406 is partially tightened to allow rotation of the flange 402 on the axis of the fastener 406.

[0079] The flange 402 includes a second surface 408 opposite of the first surface 404. The flange 402 also includes a first projection 410 extending from the second surface 408 and a second projection 412 extending from the second surface 408. In some embodiments, the first projection 410 and the second projection 412 extend perpendicularly to the second surface 408. In some embodiments the first projection 410 extends parallel to the second projection 412.

[0080] The first portion 414 of the first wire 210 extends through a region between the first projection 410 and the second projection 412. In embodiments that include the first wire 210 and the second wire 212, the third portion 612 of the second wire 212 extends through the region between the first projection 410 and the second projection 412.

[0081] Referring to FIG. 5, the first projection 410 includes a first cylindrical surface 504. In some embodiments, the first cylindrical surface 504 is disposed opposite of the flange 402. In some embodiments, the first cylindrical surface 504 is substantially elliptic. In some embodiments, the first cylindrical surface is substantially stadium-shaped (e.g., pill shaped discorectangular, etc.). The first projection 410 includes a first lip 506, a second lip 508, and a first recessed portion 510 disposed between the first lip 506 and the second lip 508. The first lip 506 extends outward above the first recessed portion 510 and the second lip 508 extends outward below the first recessed portion 510.

[0082] A second portion 416 of the first wire 210 extends from the region between the first projection 410 and the second projection 412 and overlaps the first recessed portion 510. The first lip 506 and the second lip 508 are configured to retain the second portion 416 of the first wire 210 on the first recessed portion 510. In embodiments that include the first wire 210 and the second wire 212, the fourth portion 614 of the second wire 212 extends from the region between the first projection 410 and the second projection 412 and overlaps the first recessed portion 510. In such embodiments, the first lip 506 and the second lip 508 are configured to retain the fourth portion 614 of the second wire 212 on the first recessed portion 510.Atty. Dkt. No.: 106389-9714

[0083] The second projection 412 includes a second cylindrical surface 512. In some embodiments, the second cylindrical surface 512 is disposed opposite of the flange 402. In some embodiments, the second cylindrical surface 512 is substantially elliptic. In some embodiments, the second cylindrical surface 512 is substantially stadium-shaped. The second projection 412 includes a third lip 514, a fourth lip 516, and a second recessed portion 518 disposed between the third lip 514 and the fourth lip 516. The third lip 514 extends outward above the second recessed portion 518 and the fourth lip 516 extends outward below the second recessed portion 518.

[0084] The second portion 416 of the first wire 210 extends from the first projection 410 and is configured to overlap the second recessed portion 518. The third lip 514 and the fourth lip 516 are configured to retain the second portion 416 of the first wire 210 on the second recessed portion 518. In embodiments that include the first wire 210 and the second wire 212, the fourth portion 614 of the second wire 212 extends from the first projection 410 and is configured to overlap the second recessed portion 518. In such embodiments, the third lip 514 and the fourth lip 516 are configured to retain the fourth portion 614 of the second wire 212 on the second recessed portion 518.V. Overview of Second Example Retainer Assembly

[0085] FIGS. 6-8 depict another embodiment of the retainer assembly 200. The retainer assembly 200 includes a base plate 604. The base plate 604 includes a plate aperture. The base plate 604 is coupled to the post assembly 602 via a fastener 606 (e.g., screw, bolt, etc.) extending through the plate aperture and into the post assembly 602. In some embodiments, the base plate 604 includes an outer sleeve disposed in the center of the base plate 604. In such embodiments, a portion of the post assembly 602 is disposed in the outer sleeve such that the base plate 604 is rotatable relative to the post assembly 602. In some embodiments, the outer sleeve is omitted from the base plate 604. In such embodiments, the fastener 606 extending through the base plate 604 into the post assembly 602 is partially tightened to allow rotation of the base plate 604 on the axis of the fastener 606 and relative to the post assembly 602. In some embodiments, the base plate 604 is circular.Atty. Dkt. No.: 106389-9714

[0086] Referring to FIGS. 9-11, in some embodiments, the base plate 604 includes a plurality of teeth 902. In such embodiments, the aftertreatment system 110 further includes a spring 1102 coupled to the housing 170. The aftertreatment system 110 further includes a pawl 904 coupled to the spring 1102. The spring 1102 facilitates engagement of the pawl 904 with the teeth 902. For example, the spring 1102 engages the pawl 904 with the teeth 902 to allow rotation of the base plate 604 in one direction (e.g., clockwise, counterclockwise, etc ). For example, when the pawl 904 engages with the teeth 902, the pawl 904 restricts rotation of the base plate 604 in the reverse direction (e.g., clockwise), allowing rotation of the base plate 604 in the intended direction (e.g., counterclockwise), as shown by the arrow in FIG. 10.

[0087] Referring back to FIGS. 6-8, the retainer assembly 200 includes a plurality of projections 608. The projections 608 extend from the base plate 604. In some embodiments, the projections 608 are disposed along the outer perimeter of the base plate 604, as shown in FIG. 7. In some embodiments, the projections 608 extend perpendicularly from the base plate 604, as shown in FIG. 8. In some embodiments, the projections 608 are cylindrical.

[0088] A first portion 414 of the first wire 210 is configured to extend through a region between a subset of the projections 608. For example, the base plate 604 includes eight projections 608 split into two subsets of four projections 608 each, the first portion 414 of the first wire 210 extends through a region between a first subset of four projections 608 and a second subset of four projections 608, as shown in FIG. 7. For example, the base plate 604 includes eight projections 608 split into two subsets of three projections 608 and five projections 608, respectively, the first portion 414 of the first wire 210 extends through a region between the subset of three projections 608 and the subset of five projections 608, as shown in FIG. 6. The retainer assembly 200 is configured to rotate to facilitate the wrapping of the second portion 416 of the first wire 210 around the projections 608, as shown in FIG. 7.

[0089] In some embodiments, the retainer assembly 200 includes a separation plate 610. The separation plate 610 is configured to separate the first wire 210 from the second wire 212. The separation plate 610 includes a plurality of separation plate apertures 1202, as shown in FIG. 10. Each separation plate aperture 1202 of the separation plate apertures 1202 corresponds with a projection 608. A portion of each of the projections 608 extends through the correspondingAtty. Dkt. No.: 106389-9714separation plate aperture 1202. In some embodiments, each projection 608 is identical in shape to each separation plate aperture 1202. In some embodiments, the separation plate apertures 1202 are disposed on the outer perimeter of the separation plate 610, as shown in FIG. 10.

[0090] In some embodiments, a third portion 612 of the second wire 212 is configured to extend through a region between a subset of the projections 608 above the separation plate 610. For example, the base plate 604 includes eight projections 608 split into two subsets of three projections 608 and five projections 608, respectively, the third portion 612 of the second wire 212 extends through a region between the subset of three projections 608 and the subset of five projections 608, as shown in FIG. 6. For example, the base plate 604 includes eight projections 608 split into two subsets of four projections 608 each, the third portion 612 of the second wire 212 extends through a region between a first subset of four projections 608 and a second subset of four projections 608. The retainer assembly 200 is configured to rotate to facilitate the wrapping of the fourth portion 614 of the second wire 212 around the projections 608, as shown in FIG. 6.

[0091] In some embodiments, the base plate 604 includes a second plate aperture and the separation plate 610 includes a separation aperture. The retainer assembly 200 includes a retainer (e.g., zip tie, etc.). The retainer extends through the separation aperture and the base plate aperture to retain the second portion 416 of the first wire 210 between the projections 608 and the retainer. The retainer retains the second portion 416 of the first wire 210 and prevents the displacement of the second portion 416 of the first wire 210 through various environments (e.g., driving, etc.).VI. Configuration of Example Embodiments

[0092] While this specification contains many specific implementation details, these should not be construed as limitations on the scope of what may be claimed but rather as descriptions of features specific to particular implementations. Certain features described in this specification in the context of separate implementations can also be implemented in combination in a single implementation. Conversely, various features described in the context of a single implementation can also be implemented in multiple implementations separately or in anyAtty. Dkt. No.: 106389-9714suitable subcombination. Moreover, although features may be described as acting in certain combinations and even initially claimed as such, one or more features from a claimed combination can, in some cases, be excised from the combination, and the claimed combination may be directed to a subcombination or variation of a subcombination.

[0093] As utilized herein, the terms “substantially,” “generally,” “approximately,” and similar terms are intended to have a broad meaning in harmony with the common and accepted usage by those of ordinary skill in the art to which the subject matter of this disclosure pertains. It should be understood by those of skill in the art who review this disclosure that these terms are intended to allow a description of certain features described and claimed without restricting the scope of these features to the precise numerical ranges provided. Accordingly, these terms should be interpreted as indicating that insubstantial or inconsequential modifications or alterations of the subject matter described and claimed are considered to be within the scope of the appended claims.

[0094] The term “coupled” and the like, as used herein, mean the joining of two components directly or indirectly to one another. Such joining may be stationary (e.g., permanent) or moveable (e.g., removable or releasable). Such joining may be achieved with the two components or the two components and any additional intermediate components being integrally formed as a single unitary body with one another, with the two components, or with the two components and any additional intermediate components being attached to one another.

[0095] It is important to note that the construction and arrangement of the various systems shown in the various example implementations is illustrative only and not restrictive in character. All changes and modifications that come within the spirit and / or scope of the described implementations are desired to be protected. It should be understood that some features may not be necessary, and implementations lacking the various features may be contemplated as within the scope of the disclosure, the scope being defined by the claims that follow. When the language “a portion” is used, the item can include a portion and / or the entire item unless specifically stated to the contrary.Atty. Dkt. No.: 106389-9714

[0096] Also, the term “or” is used, in the context of a list of elements, in its inclusive sense (and not in its exclusive sense) so that when used to connect a list of elements, the term “or” means one, some, or all of the elements in the list. Conjunctive language such as the phrase “at least one of X, Y, and Z,” unless specifically stated otherwise, is otherwise understood with the context as used in general to convey that an item, term, etc. may be either 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, such conjunctive language is not generally intended to imply that certain embodiments require at least one of X, at least one of Y, and at least one of Z to each be present, unless otherwise indicated.

[0097] Additionally, the use of ranges of values (e.g., W1 to W2, etc.) herein are inclusive of their maximum values and minimum values (e.g., W1 to W2 includes W 1 and includes W2, etc.), unless otherwise indicated. Furthermore, a range of values (e.g., W1 to W2, etc.) does not necessarily require the inclusion of intermediate values within the range of values (e.g., W1 to W2 can include only W1 and W2, etc.), unless otherwise indicated.

Claims

Atty. Dkt. No.: 106389-9714WHAT IS CLAIMED IS:

1. An aftertreatment system comprising:an aftertreatment component assembly comprising:a housing, andan aftertreatment component disposed within the housing;a first electronic component;a second electronic component;a retainer assembly comprising:a flange having a first surface coupled to the housing, and a second surface opposite of the first surface,a first projection extending from the second surface, anda second projection extending from the second surface; anda wire coupled to the first electronic component and the second electronic component, the wire comprising a first portion extending through a region between the first projection and the second projection, and a second portion wrapped around the first projection and the second projection.

2. The aftertreatment system of claim 1, wherein:the first projection comprises a first cylindrical surface, the first cylindrical surface is disposed opposite of the flange; andthe second projection comprises a second cylindrical surface, the second cylindrical surface is disposed opposite of the flange.

3. The aftertreatment system of claim 2, wherein:the first cylindrical surface is substantially elliptic or stadium-shaped; andthe second cylindrical surface is substantially elliptic or stadium-shaped.

4. The aftertreatment system of claim 1, further comprising a fastener;wherein the flange comprises a retainer aperture;wherein the housing comprises a housing aperture; andwherein the fastener extends through the retainer aperture and the housing aperture.Atty. Dkt. No.: 106389-97145. The aftertreatment system of claim 1, wherein:the first projection comprises:a first lip,a second lip, anda first recessed portion disposed between the first lip and the second lip; the second portion overlaps the first recessed portion;the second projection comprises:a third lip,a fourth lip, anda second recessed portion disposed between the third lip and the fourth lip; and the second portion overlaps the second recessed portion.

6. The aftertreatment system of claim 1, wherein:the first projection extends perpendicularly from the second surface; andthe second projection extends perpendicularly from the second surface.

7. The aftertreatment system of claim 1, wherein the first projection extends parallel to the second projection.

8. An aftertreatment system comprising:an aftertreatment component assembly comprising:a housing, andan aftertreatment component disposed within the housing;a first electronic component;a second electronic component;a post assembly coupled to the housing;a retainer assembly separated from the housing by the post assembly, the retainer assembly comprising:a base plate that is rotatably coupled to the post assembly, anda plurality of projections coupled to and extending from the base plate; andAtty. Dkt. No.: 106389-9714a first wire coupled to the first electronic component and the second electronic component, the first wire comprising a first portion extending through a region between a subset of the projections and a second portion wrapped around the projections.

9. The aftertreatment system of claim 8, further comprising a fastener;wherein the base plate comprises a plate aperture;wherein the post assembly comprises a post aperture; andwherein the fastener extends through the plate aperture and the post aperture.

10. The aftertreatment system of claim 8, further comprising:a third electronic component;a fourth electronic component; anda second wire coupled to the third electronic component and the fourth electronic component, the second wire comprising a third portion extending through a region between a subset of the projections and a fourth portion wrapped around the projections;wherein the retainer assembly further comprises a separation plate comprising a plurality of separation plate apertures;wherein a portion of each of the projections extends through a corresponding one of the separation plate apertures; andwherein the separation plate separates the first wire from the second wire.

11. The aftertreatment system of claim 8, further comprising:a pawl; anda spring coupled to the pawl;wherein the retainer assembly further comprises a plurality of teeth disposed on the base plate;wherein the spring facilitates engagement of the pawl with the teeth; andwherein each of the teeth is rotatably coupled to the pawl such that the base plate is rotatable relative to the pawl.Atty. Dkt. No.: 106389-971412. The aftertreatment system of claim 8, wherein the plurality of projections are cylindrical.

13. The aftertreatment system of claim 8, wherein the plurality of projections are disposed along an outer perimeter of the base plate.

14. The aftertreatment system of claim 8, wherein the base plate comprises an outer sleeve disposed in a center of the base plate and a portion of the post assembly is disposed in the outer sleeve such that the base plate is rotatable relative to the post assembly.

15. The aftertreatment system of claim 8, wherein the plurality of projections extend perpendicularly from the base plate.

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