Aftertreatment system including bracket for coupling to component of aftertreatment system

Abstract

An after-treatment system includes a first after-treatment system component, a second after-treatment system component, a third after-treatment system component, a first bracket, and a second bracket. The second aftertreatment system component has a first end and a second end. The first end is connected to the first aftertreatment system component. The second end of the second aftertreatment system component is connected to the third aftertreatment system component. The first bracket has at least a first end and a second end. A first end of the first bracket is coupled to the first aftertreatment system component or the third aftertreatment system component. The second end of the first bracket may be coupled to the second bracket or to the isolator. The second bracket may be coupled to the first bracket or may be connected to the isolator and assist in supporting the second aftertreatment system component.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to and the benefit of U.S. Provisional Patent Application No. 63 / 448,427, filed on February 27, 2023, the entire disclosure of which is hereby incorporated by reference herein. Technical Field

[0002] The present application generally relates to an aftertreatment system including a bracket configured to be coupled to an aftertreatment system component. background

[0003] In internal combustion engines, such as diesel engines, nitrogen oxides (NO x ) compounds may be emitted in the exhaust. For example, it is desirable to reduce NO x emissions to comply with environmental regulations. Reduce NO x Emissions, an aftertreatment system may be used in which a reductant is dosed into the exhaust. Mounting members may be used to secure the aftertreatment system to the chassis of a vehicle.

[0004] Aftertreatment system components may be subsystems that are coupled together at their ends to form a conduit for treating exhaust gas. Exhaust gas may enter a first aftertreatment system component, flow through a second aftertreatment system component and into a third aftertreatment system component before being released in a more environmentally acceptable form. Although the aftertreatment system itself may be mounted to a vehicle, some of its components may not be directly coupled to the vehicle and may be connected to other aftertreatment system components only at their ends or in a manner that causes undesirable movement, vibration, and displacement of components within the aftertreatment system relative to each other. Unsupported aftertreatment system components may be subject to localized vibration modes with high displacement and ultimately high stresses. These conditions negatively impact the durability of the aftertreatment system and the ability of the aftertreatment system to meet its expected mechanical design life. Breakage, disconnections, fractures, and leaks in the aftertreatment system caused by unsupported movement of aftertreatment system components may result in significant downtime and expensive repairs. SUMMARY OF THE INVENTION

[0005] In one embodiment, an aftertreatment system includes a first aftertreatment system component, a second aftertreatment system component, a third aftertreatment system component, a first bracket, and a second bracket. The second aftertreatment system component has a first end and a second end. The first end is connected to the first aftertreatment system component. The third aftertreatment system component is connected to the second end of the second aftertreatment system component. A first bracket has at least a first end and a second end. The first end of the first bracket is coupled to the first aftertreatment system component or the third aftertreatment system component. The second bracket is coupled to the second end of the first bracket. The second bracket has a surface that interfaces with a portion of the second aftertreatment system component.

[0006] In another embodiment, an aftertreatment system includes a first aftertreatment system component, a second aftertreatment system component, a third aftertreatment system component, a first bracket, a second bracket, and an isolator. The second aftertreatment system component has a first end and a second end. The first end is connected to the first aftertreatment system component. The third aftertreatment system component is connected to the second end of the second aftertreatment system component. The first bracket has at least a first end and a second end. The first end of the first bracket is coupled to the first aftertreatment system component or the third aftertreatment system component. The second bracket has a first end and a second end. The first end of the second bracket is coupled to the second aftertreatment system component. The isolator is connected to the second end of the first bracket and the second end of the second bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The details of one or more embodiments are set forth in the accompanying drawings and the following description. Other features, aspects, and advantages of the present disclosure will become apparent from the description, drawings, and claims. In the accompanying drawings: Figure 1 is a block diagram of an exemplary vehicle system; Figure 2 is a perspective view of an aftertreatment system according to various embodiments of the present disclosure; Figure 3 It is along Figure 2 The basis of plane AA interception in Figure 2 Cross-sectional views of aftertreatment systems of various embodiments shown in ; Figure 4 is a perspective view of an aftertreatment system according to various embodiments; Figure 5 It is along Figure 4 The plane BB in the Figure 4 A cross-sectional view of the aftertreatment system in FIG; Figure 6 is a perspective view of an isolator according to various embodiments; Figure 7 is a perspective view of an aftertreatment system according to various embodiments; and Figure 8 It is along Figure 7 The plane CC in the Figure 7 A cross-sectional view of the aftertreatment system in Figure 1.

[0008] It will be appreciated that some or all of the drawings are schematic illustrations for illustrative purposes. The drawings are provided for the purpose of illustrating one or more implementations, with the express understanding that they are not intended to limit the scope or meaning of the claims. Detailed description

[0009] The following is a more detailed description of various concepts and embodiments related to an aftertreatment system according to the present disclosure, including at least one bracket for coupling to an aftertreatment system component. The bracket can be self-contained within the aftertreatment system and does not require direct connection to an external structure or support structure of the vehicle. 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 implementation. Examples of specific embodiments and applications are provided primarily for illustrative purposes.

[0010] I. Overview In order to reduce emissions from the internal engine, it may be desirable to connect an aftertreatment system to the vehicle. Current aftertreatment systems are connected to the vehicle chassis via fixed / welded connections or removable connections (i.e., mountings) at designated locations on certain aftertreatment system components. Mountings are only present on a subset of the aftertreatment system components, which means that some aftertreatment system components are not directly connected to the vehicle, but are only supported indirectly via other components. Aftertreatment system components that are not directly mounted to the vehicle are subject to increased local vibrations with high displacements and ultimately high stresses. Indirectly supported aftertreatment system components may experience bending, cracking, breaking, and other structural failures, which shorten the expected mechanical service life of the aftertreatment system. Such problems are particularly evident when the components of the aftertreatment system are arranged in parallel or otherwise extend longitudinally relative to each other and are connected only at the ends of each component.

[0011] Embodiments herein relate to an aftertreatment system that includes a device for better securing indirectly supported aftertreatment system components to minimize excessive free-body motion and vibration. For example, the aftertreatment system may include a first aftertreatment system component, a second aftertreatment system component having a first end and a second end, and a third aftertreatment system component. The first aftertreatment system component and / or the third aftertreatment system component may be connected to a vehicle. The second aftertreatment system component may not be directly connected to the vehicle. Instead, the first end of the second aftertreatment system component is connected to the first aftertreatment system component, and the second end of the second aftertreatment system component is connected to the third aftertreatment system component. The aftertreatment system may also include a first bracket and a second bracket. The first bracket has at least a first end and a second end. The first end of the first bracket is coupled to the first aftertreatment system component or the third aftertreatment system component. The second end of the first bracket is coupled to the second bracket. The second bracket has a surface that engages a portion of the second aftertreatment system component, thereby minimizing excessive motion in the second aftertreatment system component. By securing unsupported aftertreatment system components to other components within the aftertreatment system, stress, displacement, and static loads can be reduced at a low cost and in a self-contained manner that does not require additional interfaces with the vehicle.

[0012] II. Overview of Example Vehicle Systems with Aftertreatment Systems Figure 1 A vehicle system 100 is depicted. The vehicle system 100 includes an internal combustion engine (eg, a diesel internal combustion engine, a gasoline internal combustion engine, a hybrid internal combustion engine, etc.) that produces exhaust gas. The exhaust gas includes particulate matter, NO x and other gases that require treatment before release into the atmosphere. Vehicle system 100 also includes an aftertreatment system 101. Aftertreatment system 101 receives exhaust gas, treats the exhaust gas with a reductant, and then provides the treated exhaust gas to the atmosphere. Aftertreatment system 101 includes an exhaust duct system 104. Exhaust duct system 104 is configured (e.g., structured to, capable of, etc.) to provide a passage and / or receive exhaust gas from an internal combustion engine and provide the exhaust gas to the atmosphere or another downstream component.

[0013] Exhaust conduit system 104 may include an upstream diesel particulate filter (DPF) 106. DPF 106 is configured to remove particulate matter, such as soot, from the exhaust gas flowing in exhaust conduit system 104. DPF 106 includes an inlet, where exhaust gas is received, and an outlet, where the exhaust gas exits after substantially filtering particulate matter from the exhaust gas and / or converting the particulate matter into carbon dioxide. In some embodiments, DPF 106 may be omitted.

[0014] The exhaust conduit system 104 also includes a first aftertreatment system component 108 (e.g., an exhaust conduit, a decomposition chamber, a reactor, a reactor tube, a DPF, a selective catalytic reduction (SCR) catalyst, a diesel oxidation catalyst (DOC), etc.). In some embodiments, the first aftertreatment system component 108 is configured to convert a reductant into ammonia. The reductant can be, for example, urea, diesel exhaust fluid (DEF), Adblue®, a urea water solution (UWS), an aqueous urea solution (e.g., AUS32, etc.), and / or other similar fluids. The first aftertreatment system component 108 can include an inlet and an outlet, the inlet being in fluid communication with the DPF 106 to receive a fluid containing NO. x Exhaust, outlet for exhaust, NO x The exhaust, ammonia, and / or reductant exhaust mixture flows to a second aftertreatment system component 109 .

[0015] The first aftertreatment system component 108 may be coupled to a mount 111. The mount 111 may be a variety of structures used to secure the first aftertreatment system component 108 to the chassis 142 of the vehicle. Typically, the mount 111 couples a receiving feature or surface of the first aftertreatment system component 108 to the chassis 142. For example, the mount 111 may include a V-strap, clamps, welded hangar bars, fasteners, retaining flanges, straps, and other similar structures. The mount 111 may be a fastener configured to be received into a fastener hole on the first aftertreatment system component 108 and couple the first aftertreatment system component 108 to the chassis 142. The mount 111 ensures that the aftertreatment system 101 is securely coupled (e.g., fastened, attached, affixed, welded, bolted, etc.) to the vehicle through a direct connection between the vehicle and the first aftertreatment system component 108. Typically, the mount 111 secures the first aftertreatment system component 108 to the chassis 142 of the vehicle. Chassis 142 is the load-bearing frame of the vehicle and provides a stable surface to which first aftertreatment system component 108 is attached. When directly attached to the vehicle in this manner, first aftertreatment system component 108 experiences relatively little free-body motion or vibration relative to other components of aftertreatment system 101. However, other components of aftertreatment system 101 that are not directly connected to chassis 142 may experience localized free-body motion, vibration, and stress if they are not adequately supported within aftertreatment system 101 or coupled to the vehicle's chassis 142.

[0016] Aftertreatment system 101 also includes a reductant delivery system 102. As explained in greater detail herein, reductant delivery system 102 is configured to facilitate the introduction of a reductant (e.g., a reductant, a reductant-air mixture, etc.) into the exhaust gas. Reductant delivery system 102 includes a dispenser 112 (e.g., a dispensing module, a dispensing assembly, etc.), which can be configured to dispense the reductant into the first aftertreatment system component 108 to facilitate treatment of the exhaust gas. For example, dispenser 112 can dispense the reductant into the path of the exhaust gas via an injector 120. In some embodiments, dispenser 112 can be configured to receive air and reductant and provide the air / reductant mixture into the exhaust gas. Dispenser 112 can include an isolator positioned between a portion of dispenser 112 and first aftertreatment system component 108, to which dispenser 112 can be mounted.

[0017] The dispenser 112 is fluidly coupled to a reductant source 114 (e.g., fluidly configured to communicate with the reductant source 114, etc.). The reductant source 114 may include multiple reductant sources 114. The reductant source 114 may be, for example, a diesel exhaust fluid tank containing Adblue®. A reductant pump 116 (e.g., a supply unit, etc.) is used to pressurize the reductant from the reductant source 114 for delivery to the dispenser 112. In some embodiments, the reductant pump 116 is pressure-controlled (e.g., controlled to achieve a target pressure, etc.). The reductant pump 116 may include a reductant filter 118. The reductant filter 118 filters (e.g., strains, etc.) the reductant before providing it to internal components (e.g., pistons, vanes, etc.) of the reductant pump 116. For example, the reductant filter 118 may inhibit or prevent solids (e.g., solidified reductant, contaminants, etc.) from being transferred to the internal components of the reductant pump 116. In this manner, the reductant filter 118 can facilitate prolonged desired operation of the reductant pump 116. In some embodiments, the reductant pump 116 is coupled to a chassis 142 of a vehicle associated with the aftertreatment system 101.

[0018] The dispenser 112 includes at least one injector 120. Each injector 120 is configured to dispense reductant into the exhaust gas (e.g., within the first aftertreatment system component 108, etc.). In some embodiments, the reductant delivery system 102 also includes an air pump 122. In these embodiments, the air pump 122 can draw air from an air source 124 (e.g., an air intake, etc.) and pass the air through an air filter 126 positioned upstream of the air pump 122. In such embodiments, the air pump 122 provides air to the dispenser 112 via a conduit. In these embodiments, the dispenser 112 is configured to mix the air and reductant into an air-reductant mixture and provide the air-reductant mixture into the exhaust gas (e.g., within the first aftertreatment system component 108, etc.). In other embodiments, the reductant delivery system 102 does not include an air pump 122 or an air source 124. In such embodiments, the dispenser 112 is not configured to mix the reductant with air. As a result, the reductant can be injected upstream of the second aftertreatment system component 109 so that the second aftertreatment system component 109 receives a mixture of reductant and exhaust gas. The reductant droplets undergo evaporation, pyrolysis, and hydrolysis processes to form non-NO x Emissions (e.g., gaseous ammonia, etc.).

[0019] In some embodiments, the reductant delivery system 102 may include a reductant delivery system controller 128 that is electrically or communicatively coupled to the doser 112, the reductant pump 116, and / or the air pump 122. The reductant delivery system controller 128 may be configured to control the doser 112 to dispense reductant to the first aftertreatment system component 108. The reductant delivery system controller 128 may also be configured to control the reductant pump 116 and the air pump 122.

[0020] The reductant delivery system controller 128 includes processing circuitry 130. Processing circuitry 130 includes a processor 132 and memory 134. Processor 132 may include a microprocessor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or the like, or a combination thereof. Memory 134 may include, but is not limited to, electronic, optical, magnetic, or any other storage or transmission device capable of providing program instructions to the processor, ASIC, FPGA, or the like. Memory 134 may include a memory chip, an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), flash memory, or any other suitable memory from which the reductant delivery system controller 128 can read instructions. The instructions may include code from any suitable programming language. Memory 134 may include various modules that include instructions configured to be executed by processor 132.

[0021] In various embodiments, the reductant 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 101. In some embodiments, the central controller 136 and the reductant delivery system controller 128 are integrated into a single controller.

[0022] In some embodiments, the central controller 136 may communicate with a display device (e.g., a screen, monitor, touchscreen, heads-up display (HUD), indicator light, etc.). The display device may be configured to change state in response to receiving information from the central controller 136. For example, the display device may be configured to change between a static state (e.g., displaying a green light, displaying a "System OK" message, etc.) and an alarm state (e.g., displaying a flashing red light, displaying a "Maintenance Required" message, etc.) based on communications from the central controller 136. By changing state, the display device may provide an indication to a user (e.g., an operator, etc.) of the status (e.g., operational, maintenance required, etc.) of the reductant delivery system 102.

[0023] The aftertreatment system 101 may also include a dispenser mounting bracket 138 (e.g., a mounting bracket, coupler, plate, etc.). The dispenser mounting bracket 138 couples the dispenser 112 to components of the aftertreatment system 101. The dispenser mounting bracket 138 is configured to reduce heat transfer from exhaust gas traversing the exhaust duct system 104 to the dispenser 112. In this manner, the dispenser 112 can operate more efficiently and optimally than other dispensers that do not reduce heat transfer. The dispenser mounting bracket 138 is configured to facilitate reliable installation of the dispenser 112. This can reduce manufacturing costs associated with the aftertreatment system 101 and ensure repeatable, desired installation of the dispenser 112.

[0024] In various embodiments, dispenser mounting bracket 138 couples dispenser 112 to first aftertreatment system component 108. In some embodiments, dispenser mounting bracket 138 couples dispenser 112 to an exhaust duct of exhaust duct system 104. For example, dispenser mounting bracket 138 can couple dispenser 112 to an exhaust duct of exhaust duct system 104 upstream of first aftertreatment system component 108, or to an exhaust duct of exhaust duct system 104 downstream of first aftertreatment system component 108. In some embodiments, dispenser mounting bracket 138 couples dispenser 112 to DPF 106 and / or second aftertreatment system component 109. The location of dispenser mounting bracket 138 can vary depending on the application of aftertreatment system 101. For example, in some embodiments of aftertreatment system 101, dispenser mounting bracket 138 can be located further upstream. Furthermore, some aftertreatment systems 101 can include multiple dispensers 112, and therefore, multiple dispenser mounting brackets 138.

[0025] The exhaust duct system 104 also includes a second aftertreatment system component 109 (e.g., an exhaust duct, a decomposition chamber, a reactor, a reactor tube, a DPF, an SCR catalyst, a DOC, etc.). The second aftertreatment system component 109 includes an inlet in fluid communication with the first aftertreatment system component 108, from which it receives exhaust gas, an exhaust reductant, etc. Typically, the inlet of the second aftertreatment system component 109 is located at a first end 150 of the second aftertreatment system component 109. The exhaust gas or fluid mixture then flows through the second aftertreatment system component 109 and reaches an outlet. The outlet of the second aftertreatment system component 109 is in fluid communication with the third aftertreatment system component 110. The outlet of the second aftertreatment system component 109 is typically located at a second end 152 of the second aftertreatment system component 109. In this manner, the second aftertreatment system component 109 is connected to the aftertreatment system 101 at least at its first end 150 and second end 152.

[0026] The exhaust conduit system 104 also has a third aftertreatment system component 110. The third aftertreatment system component 110 may be an exhaust conduit, a decomposition chamber, a reactor, a reactor tube, a DPF, an SCR catalyst, etc. In some embodiments, the third aftertreatment system component 110 may be an oxidation catalyst (e.g., a DOC) that is in fluid communication with the exhaust conduit system 104 (e.g., downstream of the second aftertreatment system component 109 or upstream of the DPF 106) to oxidize hydrocarbons and carbon monoxide in the exhaust gas.

[0027] The third aftertreatment system component 110 may also include a mounting member 111. The mounting member 111 may be any structure used to secure the third aftertreatment system component 110 to the chassis 142 as described above. The mounting member 111 may directly connect the third aftertreatment system component 110 to the chassis 142 of the vehicle. Other components of the aftertreatment system 101 not directly connected to the chassis 142 may experience localized free-body motion. Localized free-body motion of aftertreatment system components may include oscillation of the component, unintended displacement of the component relative to other components, and expansion or contraction at joints / connections between components. For example, components experiencing excessive free-body motion may rock, vibrate, bounce, or move into positions that cause undesirable wear on the aftertreatment system 101. Components of the aftertreatment system 101 not directly connected to the chassis 142 may also experience excessive vibrations, forces, and stresses if they are not adequately supported within the aftertreatment system 101. Free-body motion may cause components to break, crack, or fracture, requiring expensive or extensive repairs. The aftertreatment system 101 would benefit from concentrating wear or damage to sections / smaller structures that can be easily and inexpensively repaired, rather than having the damage occur at expensive or costly components where failure would result in significant downtime, etc.

[0028] Aftertreatment system 101 includes an aftertreatment support system 140. As described in greater detail herein, aftertreatment support system 140 is configured to reduce excessive free-body motion within aftertreatment system 101 by securing second aftertreatment system component 109 to first aftertreatment system component 108 and / or third aftertreatment system component 110. In this manner, aftertreatment support system 140 reduces stress experienced by aftertreatment system 101, lowering the likelihood of breakage or fracture, and ensuring that aftertreatment system 101 meets its intended mechanical service life. Furthermore, by securing second aftertreatment system component 109 to first aftertreatment system component 108 and / or third aftertreatment system component 110, aftertreatment support system 140 is self-contained (e.g., requiring no additional mounting interface or connector between the vehicle and aftertreatment system 101). The self-contained nature of aftertreatment support system 140 within aftertreatment system 101 reduces maintenance and servicing costs—no additional linkages, connectors, fasteners, or supports are required between or directly connecting aftertreatment support system 140 and the vehicle. The self-contained nature of aftertreatment support system 140 also minimizes and more efficiently utilizes space, while reducing the risk of breakage and increasing the likelihood that aftertreatment system 101 will meet its expected mechanical service life. This efficient use of space is a result of the smaller profile of the self-contained aftertreatment support system 140 (which is only connected to other components of aftertreatment system 101) compared to the larger profile of a support system that would require connectors extending outward from aftertreatment system 101 and additional connectors to the vehicle. Furthermore, the self-contained aftertreatment support system 140 allows the aftertreatment system 101 to be connected to a vehicle without the need for additional mounts 111, facets, or linkages, ensuring that the aftertreatment system 101 can still be connected to the same type and range of compatible vehicles (e.g., no vehicle modifications need to be made to facilitate use of the self-contained aftertreatment support system 140).

[0029] In some embodiments, aftertreatment support system 140 includes a bracket coupled to first aftertreatment system component 108, second aftertreatment system component 109, and / or third aftertreatment system component 110. In other embodiments, aftertreatment support system 140 utilizes a bracket coupled to first aftertreatment system component 108, second aftertreatment system component 109, and / or third aftertreatment system component 110, and may utilize a vibration-damping structure coupled to the bracket.

[0030] Figure 2An exhaust duct system 104 of aftertreatment system 101 is depicted. Exhaust duct system 104 provides a passage for treating exhaust gas that flows from a vehicle's internal combustion engine before being released into the atmosphere. Exhaust duct system 104 includes a first aftertreatment system component 108. First aftertreatment system component 108 may be a light-off (LO) catalyst assembly that filters particulate matter from the exhaust, controls the temperature of the exhaust for treatment, and injects a reductant into the exhaust. First aftertreatment system component 108 may include a mounting 111. In other embodiments, first aftertreatment system component 108 may be an exhaust duct, a decomposition chamber, a reactor, a reactor tube, a DPF, an SCR catalyst, a diesel oxidation catalyst (DOC), or the like. Figure 2-Figure 7 The first aftertreatment system component 108 is depicted as, for example, a LO catalyst assembly.

[0031] exist Figure 2 In the embodiment, the exhaust conduit system 104 further includes a second after-treatment system component 109. The second after-treatment system component 109 may be an exhaust conduit, a decomposition chamber, a reactor, a reactor pipe, a DPF, an SCR catalyst, a diesel oxidation catalyst (DOC), or the like. Figure 2-Figure 7 The second aftertreatment system component 109 is depicted as, for example, a decomposition reactor tube (DRT) and a transfer tube assembly. The second aftertreatment system component 109 may receive exhaust gas, an exhaust gas-reductant mixture, and / or an exhaust gas-reductant-air mixture. The second aftertreatment system component 109 may convert the exhaust gas and reductant into ammonia through hydrolysis. The second aftertreatment system component 109 has a first end 150. First end 150 may be an inlet for receiving exhaust gas or an exhaust gas mixture from the outlet of the first aftertreatment system component 108. First end 150 also provides structural support for the second aftertreatment system component 109 by connecting the second aftertreatment system component 109 to the first aftertreatment system component 108. The second aftertreatment system component 109 also has a second end 152. Second end 152 may be an outlet for providing exhaust gas, an exhaust gas mixture, or ammonia to the inlet of the third aftertreatment system component 110. Second end 152 also provides structural support for the second aftertreatment system component 109 by connecting the second aftertreatment system component 109 to the third aftertreatment system component 110. In this manner, second aftertreatment system component 109 may extend parallel to or longitudinally with first aftertreatment system component 108 and third aftertreatment system component 110. First end 150 and second end 152 may not support second aftertreatment system component 109 at or near its center of gravity.

[0032] As mentioned above, the exhaust conduit system 104 also includes a third aftertreatment system component 110. The third aftertreatment system component 110 can process the exhaust gas, the exhaust mixture, NO xIn some embodiments, the third after-treatment system component 110 may be an exhaust duct, a decomposition chamber, a reactor, a reactor tube, a DPR, an SCR catalyst, a diesel oxidation catalyst (DOC), etc. Figure 2-Figure 7 The third aftertreatment system component 110 is depicted as, for example, a dual SCR catalyst assembly.

[0033] Figure 2 Aftertreatment support system 140 is shown providing support to an otherwise unsupported longitudinal region or bulk of second aftertreatment system component 109. As depicted, aftertreatment support system 140 can be located near the center of gravity of second aftertreatment system component 109. However, aftertreatment support system 140 can employ a variety of embodiments and configurations. For example, aftertreatment support system 140 or its various variations can support second aftertreatment system component 109 at one or more locations along its length. Furthermore, aftertreatment support system 140 can be coupled to various combinations of at least first aftertreatment system component 108, second aftertreatment system component 109, and / or third aftertreatment system component 110.

[0034] III. Overview of Exemplary Post-Processing Support Systems Go to Figure 3 , showing a section along plane AA from Figure 2 FIG2 is a cross-sectional view of exhaust duct system 104. The cross-section of exhaust duct system 104 includes a mid-section of a first aftertreatment system component 108. The mid-section of first aftertreatment system component 108 can be connected to aftertreatment support system 140. Similarly, a mid-section of a third aftertreatment system component 110 is shown. The mid-section of third aftertreatment system component 110 can also be connected to aftertreatment support system 140. Aftertreatment support system 140 can then connect the mid-section of first aftertreatment system component 108 and / or the mid-section of third aftertreatment system component 110 to the mid-section of second aftertreatment system component 109. During conventional system operation, replacement of some components can be complex due to their location and configuration. In the event of a failure, aftertreatment support system 140 can provide for simple and efficient replacement of subcomponents within aftertreatment support system 140. Furthermore, aftertreatment support system 140 can be configured to accommodate stresses in other aftertreatment system components, allowing failures to be directed to components, such as brackets within aftertreatment support system 140, that are simple and efficient to replace. For example, replacement of aftertreatment support system 140 or a portion thereof may be significantly less expensive than replacement of another component of aftertreatment system 101. Additionally, breakage, fracture, etc. of aftertreatment support system 140 may prevent the failure of individual components that could result in the release of harmful exhaust gases, degrade overall system performance, or lead to time-consuming repairs.

[0035] Figure 4 An aftertreatment support system 140 is shown coupled to the first aftertreatment system component 108 and the second aftertreatment system component 109. In other embodiments, the aftertreatment support system 140 can be coupled to any combination of the second aftertreatment system component 109 and the first aftertreatment system component 108 and / or the third aftertreatment system component 110. In this manner, a plurality of the aftertreatment support system 140, or any variations thereof, can be positioned along the length of the second aftertreatment system component 109 to provide additional support to the second aftertreatment system component 109. In particular, the aftertreatment support system 140 can be positioned such that it supports the second aftertreatment system component 109 at its center of gravity.

[0036] Go to Figure 5 , showing the Figure 4 The plane BB is intercepted from Figure 4 108 and 110. FIG. 104 is a cross-sectional view of the exhaust duct system 104. The aftertreatment support system 140 includes a first bracket 300. The first bracket 300 forms part of the structure that secures the aftertreatment support system 140 to the first aftertreatment system component 108 and / or the third aftertreatment system component 110. The first bracket 300 can be made of stainless steel, galvanized carbon steel, aluminum, or other suitable materials. The first bracket 300 can be in the shape of a hollow rod, a solid rod, a prism, or the like, such that the first bracket 300 adequately supports the components of the aftertreatment system 101.

[0037] The first bracket 300 includes a first end 301. The first end 301 couples the first bracket 300 to the first aftertreatment system component 108. In other embodiments, the first end 301 can couple the first bracket 300 to the third aftertreatment system component 110. The first end 301 can be coupled or secured to the first aftertreatment system component 108 in a variety of ways. For example, the first end 301 can be welded to a surface of the first aftertreatment system component 108, can be bolted or riveted to a separate coupling structure fastened to the first aftertreatment system component 108, can be secured to the first aftertreatment system component 108 via a clamp, etc. Figure 5 As shown, the first end 301 may be curved or otherwise shaped to align with or interface with the contours of the first aftertreatment system component 108. In other embodiments, a groove, anchor, or other recess may be formed in a surface of the first aftertreatment system component 108 such that the first end 301 may be received therein and secured in place.

[0038] The first bracket 300 also includes a second end 302. The second end 302 can be adjacent to the first end 301 of the first bracket 300. The second end 302 can extend away from the surface of the first aftertreatment system component 108 or the third aftertreatment system component 110 to facilitate connection with the second aftertreatment system component 109. In some embodiments, the second end 302 includes first and second parallel rods that facilitate connection with the second aftertreatment system component 109.

[0039] Aftertreatment support system 140 also includes a second bracket 310. Second bracket 310 forms part of the structure that secures aftertreatment support system 140 to first aftertreatment system component 108 and / or third aftertreatment system component 110. Similar to first bracket 300, second bracket 310 may be made of stainless steel, galvanized carbon steel, aluminum, or other suitable materials.

[0040] Second bracket 310 includes a first end 311. First end 311 can be coupled to second aftertreatment system component 109 via welding, snap-fitting, bolting, or fastening to a separate surface secured to second aftertreatment system component 109. In other embodiments, first end 311 can extend / encircle completely or partially around the circumference / periphery of second aftertreatment system component 109, thereby securing it in place. In still other embodiments, a slot, recess, or groove can be formed in or on a surface of second aftertreatment system component 109, such that first end 311 can be received therein and secured in place.

[0041] Second bracket 310 also includes a second end 312. Second end 312 of second bracket 310 may be adjacent to first end 311. Second end 312 may extend away from a surface of second aftertreatment system component 109 to facilitate connection to at least one of first aftertreatment system component 108 or third aftertreatment system component 110.

[0042] Aftertreatment support system 140 also includes isolators 320. Isolators 320 dampen excessive free-body motion and vibration experienced by second aftertreatment system component 109. Isolators 320 can be made of a soft, malleable, or flexible material with sufficient durability to reduce movement of second aftertreatment system component 109. For example, isolators 320 can be made of rubber, elastomer, neoprene, or other materials. Isolators 320 couple second end 302 of first bracket 300 to second end 312 of second bracket 310. In this manner, isolators 320 can complete the structure of aftertreatment support system 140 and secure a longitudinal portion of second aftertreatment system component 109 to one or both of first and third aftertreatment system components 108, 110.

[0043] Go to Figure 6In one embodiment, the isolator 320 has two first through-holes 321 configured to receive the second end 302 of the first bracket 300. For example, in this embodiment, the second end 302 of the first bracket 300 includes first and second parallel rods, each of which extends through a respective one of the first through-holes 321. The second end 302 may also include a flange or protruding surface on each rod to abut against the isolator 320 so that the flange or protruding surface does not pass through the first through-hole 321. An end cap may be used to secure the first and second rods of the second end 302 in place within the first through-hole 321. In other embodiments, the isolator 320 includes additional first through-holes 321. In another embodiment, the isolator 320 includes only a single first through-hole 321. In such embodiments, the isolator 320 may be oval, rectangular, or other shapes, with the first and second through-holes 321, 322 positioned vertically aligned with each other.

[0044] Isolator 320 includes a second through-hole 322 configured to receive second end 312 of second bracket 310. Second end 312 may also include a flange or protruding surface to abut against isolator 320, such that the flange or protruding surface does not pass through second through-hole 322. Second end 312 is positioned through second through-hole 322 and connects second bracket 310 to isolator 320. An end cap may be used to secure second end 312 in place within second through-hole 322. As with first through-hole 321, in other embodiments, multiple or a single second through-hole 322 may be used, depending on the configuration of second end 312 of second bracket 310 (e.g., multiple parallel rods, a flat bar, etc.).

[0045] In other embodiments, multiple spacers 320 or an assembly including spacers 320 can be used to connect the second end 302 of the first bracket 300 to the second end 312 of the second bracket 310. For example, two spacers 320 can be used, each spacer 320 including a respective first through-hole 321 and second through-hole 322. The second end 302 of the first bracket 300 can be connected to the first through-hole 321 of one spacer 320, while the second end 312 of the second bracket 310 can be connected to the second through-hole 322 of the other spacer 320. The remaining first through-holes 321 and second through-holes 322 of the spacers 320 can then be coupled together using a separate rod, snap, ring, spring, clamp, or assembly to connect the second end 302 of the first bracket 300 to the second end 312 of the second bracket 310.

[0046] Go to Figure 7, the aftertreatment support system 140 is coupled to the third aftertreatment system component 110 and interfaces with the second aftertreatment system component 109. In other embodiments, the aftertreatment support system 140 may be coupled to the first aftertreatment system component 108 and interface with the second aftertreatment system component 109, or coupled to the first aftertreatment system component 108 and the third aftertreatment system component 110 and interface with the second aftertreatment system component 109, or any similar combination.

[0047] Go to Figure 8 , showing the Figure 7 The plane CC is intercepted from Figure 7 FIG2 is a cross-sectional view of the exhaust duct system 104. The aftertreatment support system 140 includes a first bracket 400. The first bracket 400 can be made of stainless steel, galvanized carbon steel, aluminum, or other suitable materials to provide support for the second aftertreatment system component 109. The body of the first bracket 400 can have a variety of configurations or shapes. For example, the first bracket 400 can be a solid rod, a hollow rod, a rack, a frame, or other similar structure. In other embodiments, the first bracket 400 is made of a rigid body, such as a three-point supported (tripod) rigid body.

[0048] First bracket 400 may also include a vibration or shock absorption system to facilitate reduced but minimal movement of second aftertreatment system component 109. For example, the body of first bracket 400 may be segmented and include a shock absorption system comprising gas springs, compression springs, piston assemblies, and / or hydraulic assemblies to dampen vibration or oscillation of second aftertreatment system component 109 (e.g., relative to chassis 142). Other brackets described herein may also include such a shock absorption system.

[0049] The first bracket 400 includes a first end 401. The first end 401 supports the first bracket 400 by permanently or removably anchoring it to a component of the aftertreatment system 101. In some embodiments, the first end 401 can be coupled to the first aftertreatment system component 108 or the third aftertreatment system component 110. For example, the first end 401 can be welded or secured with fasteners such as clamps, bolts, snaps, etc. In other embodiments, a slot, groove, or opening in a surface of the third aftertreatment system component 110 or on a structure attached to the third aftertreatment system component 110 can receive the first end 401 and secure it in place. In other embodiments, the first end 401 is similar to the opposite end of the first bracket 400. For example, in some embodiments, the first end 401 conforms to the contours of the third aftertreatment system component 110 or the first aftertreatment system component 108. In this manner, the first end 401 can have a U-shaped surface or a surface that conforms to the contours of the third aftertreatment system component 110 or the first aftertreatment system component 108. By extending at least partially around the contour of the third aftertreatment system component 110 , the first end 401 may provide more support to the first bracket 400 .

[0050] The first bracket 400 also includes a second end 402. The second end 402 of the first bracket 400 can be adjacent to the first end 401. Typically, the second end 402 is closer to the second aftertreatment system component 109 than the first end 401.

[0051] The aftertreatment support system 140 may also include a second bracket 410. The second bracket 410 may interface with and provide support for the second aftertreatment system component 109. The second bracket 410 may be coupled to the second end 402 of the first bracket 400. The second bracket 410 may be a solid rod, a hollow rod, a frame, or a rack structure configured to conform to the contours of the second aftertreatment system component 109. In some embodiments, the second bracket 410 may be directly coupled to the second aftertreatment system component 109 using welds, clamps, or snaps, or may be fastened to a separate structure secured to the second aftertreatment system component 109 using rivets, bolts, or the like. In other embodiments, the second bracket 410 may not be coupled to the second aftertreatment system component 109, but may be positioned adjacent to and extend around at least a portion of the second aftertreatment system component 109 to minimize vibration, free-body motion, and stress.

[0052] In other embodiments, the second bracket 410 can be integrally formed with the first bracket 400. For example, the first bracket 400 and the second bracket 410 can be formed by casting. More specifically, the first bracket 400 and the second bracket 410 can be formed by a casting process in which at least one core is placed in a mold and molten material (e.g., metal, etc.) is poured into the mold around the core. The mold and / or core can be used to incorporate features into the first bracket 400 and / or the second bracket 410. For example, an extension can be provided in a core (e.g., a core-in-shell, etc.) to form the first bracket 400 and the second bracket 410.

[0053] In some embodiments, the first bracket 400 and the second bracket 410 can be integrally formed via additive manufacturing. For example, the first bracket 400 and the second bracket 410 can be integrally formed using 3D printing, selective laser sintering, selective laser melting (SLM), direct metal laser sintering (DMLS), electron beam melting (EBM), ultrasonic additive manufacturing (UAM), fused deposition modeling (FDM), fused filament fabrication (FFF), stereolithography (SLA), material jetting, binder jetting, or other similar processes. As described above, the first bracket 400 and the second bracket 410 are formed as part of a single manufacturing step (e.g., 3D printing, selective laser sintering, SLM, DMLS, EBM, UAM, FDM, FFF, SLA, material jetting, binder jetting, etc.) to produce a single piece or unitary construction that cannot be disassembled without at least partial destruction of the first bracket 400 and / or the second bracket 410. For example, portions of the first bracket 400 and the second bracket 410 are: (i) inseparable from each other (e.g., a portion of the first bracket 400 cannot be separated from the second bracket 410 without destroying the first bracket 400, etc.); (ii) not formed separately from each other; and (iii) no gaps or joints exist along the boundary between adjacent portions of the first bracket 400 and the second bracket 410 (e.g., portions that share a boundary, etc.).

[0054] The second bracket 410 of the aftertreatment support system 140 may include a face 415 that interfaces with a portion of the second aftertreatment system component 109. The face 415 may include pads, vibration dampers, or other barriers to reduce noise or friction between the surface of the face 415 and the second aftertreatment system component 109. The face 415 may be solid or may include openings therein to expose portions of the second aftertreatment system component 109.

[0055] In some embodiments, the second bracket 410 may further include at least a first coupling end 411 and a second coupling end 412. The first coupling end 411 and the second coupling end 412 may be positioned adjacent to the second aftertreatment system component 109 and / or on opposite sides of a face 415 of the second bracket 410. In this manner, the first coupling end 411 and the second coupling end 412 may abut the second bracket 410. In this configuration, the face 415 may be located between the first coupling end 411 and the second coupling end 412. The first coupling end 411 and the second coupling end 412 may interface with a device (e.g., a strap 440, a clamp, a locking grid, a movable rod, etc.) configured to surround the perimeter of the second aftertreatment system component 109 or otherwise urge the second aftertreatment system component 109 toward the face 415 of the second bracket 410.

[0056] In various embodiments, a strap 440 can be connected to the first coupling end 411 and the second coupling end 412 of the second bracket 410. By tightening the strap 440, the strap 440 can push the second aftertreatment system component 109 toward the face 415 of the second bracket 410. In this way, the strap 440 can reduce vibration, free body motion, and stress experienced by the second aftertreatment system component 109. The strap 440 can be made of polyester, Dyneema ® 、Kevlar ® , nylon, polypropylene, aluminized Mylar ® In other embodiments, a clamp, a snap, a rope, a wire, or the like may be used to push the second aftertreatment system component 109 toward the surface 415 .

[0057] IV. Configuration of Example Embodiments Although this specification contains many specific implementation details, these should not be interpreted as limitations on the scope of what may be claimed, but rather as descriptions of features that are unique to particular implementations. Certain features described in this specification in the context of separate implementations may also be implemented in combination in a single implementation. Conversely, various features described in the context of a single implementation may also be implemented in multiple implementations individually or in any suitable sub-combination. Moreover, although features may be described as functioning in certain combinations and even initially claimed as such, one or more features from a claimed combination may in some cases be deleted from that combination, and a claimed combination may involve a sub-combination or a variation of a sub-combination.

[0058] As utilized herein, the terms "substantially," "approximately," "about," and similar terms are intended to have a broad meaning consistent with common and accepted usage by those of ordinary skill in the art to which the subject matter of this disclosure pertains. Those skilled in the art who review this disclosure should understand that these terms are intended to allow a description of certain features described and claimed without limiting the scope of those features to the precise numerical ranges provided. Accordingly, these terms should be interpreted as indicating insubstantial or inconsequential modifications or variations of the subject matter described and claimed and are considered to be within the scope of the appended claims.

[0059] As used herein, the term "coupled" and similar terms mean the joining of two components directly or indirectly to one another. Such joining may be fixed (e.g., permanent) or movable (e.g., removable or releasable). Such joining may be achieved by the two components, or the two components and any additional intermediate components, being integrally formed as a single unitary body with one another, or by the two components, or the two components and any additional intermediate components, being attached to one another.

[0060] As used herein, the terms "configured to receive exhaust gas from," "configured to receive air from," "configured to receive a reductant from," and the like mean that two components or objects have a path formed therebetween, through which a fluid (such as air, a reductant, an air-reductant mixture, etc.) can flow, with or without an intervening component or object. Examples of fluid couplings or configurations for achieving fluid communication may include pipes, channels, or any other suitable components for achieving the flow of a fluid from one component or object to another.

[0061] It is important to note that the structure and arrangement of the various systems shown in the various example embodiments are illustrative and non-restrictive in nature. All changes and modifications that come within the spirit and / or scope of the described embodiments are intended to be protected. It should be understood that some features may not be essential, and embodiments lacking various features may be considered within the scope of this disclosure, which is defined by the appended claims. When the language "a portion" is used, the item may include a portion and / or the entire item unless expressly stated to the contrary.

[0062] Furthermore, 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 in relation to a list of elements, the term "or" means one, some, or all of the elements in the list. Unless expressly stated otherwise, conjunction language such as the phrase "at least one of X, Y, and Z" is understood in the context to generally convey that an item, term, or the like 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). Therefore, unless otherwise specified, such conjunction language is generally not intended and implies that certain embodiments require that at least one X, at least one Y, and at least one Z are each present.

Claims

1. A post-processing system comprising: a first aftertreatment system component; a second aftertreatment system component having a first end and a second end, the first end being coupled to the first aftertreatment system component; a third aftertreatment system component coupled to the second end; a first bracket having at least a first end and a second end, the first end of the first bracket being coupled to the first aftertreatment system component or the third aftertreatment system component; and A second bracket is coupled to the second end of the first bracket, the second bracket having a surface that interfaces with a portion of the second aftertreatment system component.

2. The aftertreatment system of claim 1, further comprising a belt; in, The second bracket further includes: a first coupling end adjacent to the second aftertreatment system component, and a second coupling end adjacent to the second aftertreatment system component; wherein the face is located between the first coupling end and the second coupling end; and Wherein the strap is coupled to the first coupling end and the second coupling end such that the strap urges the second aftertreatment system component toward the face.

3. A transportation system comprising: The aftertreatment system according to claim 1; as well as a chassis coupled to the first aftertreatment system component and the third aftertreatment system component; The second aftertreatment system component is coupled to the chassis via the first bracket, the second bracket, and at least one of the first aftertreatment system component or the third aftertreatment system component.

4. The aftertreatment system according to claim 3, wherein: The first bracket further includes: a body extending between the first end and the second end, the body including a vibration damping system configured to dampen vibration of the second aftertreatment system component relative to the chassis; and The shock absorption system includes at least one of a gas spring, a compression spring, a piston assembly, or a hydraulic assembly.

5. The aftertreatment system according to claim 1, wherein: The first aftertreatment system component, the second aftertreatment system component, and the third aftertreatment system component each include at least one of an exhaust conduit, a decomposition chamber, a reactor, a reactor pipe, a diesel particulate filter (DPF), a selective catalytic reduction (SCR) catalyst, a diesel oxidation catalyst (DOC), or an ammonia slip (AMOX) catalyst.

6. The aftertreatment system according to claim 1, wherein: The first aftertreatment system component includes a diesel particulate filter DPF; The second aftertreatment system component includes a decomposition chamber; The third aftertreatment system component includes a selective catalytic reduction (SCR) catalyst; and The first, second, and third aftertreatment system components are coupled in series such that exhaust gas flows from the first aftertreatment system component through the second aftertreatment system component and then into the third aftertreatment system component.

7. The aftertreatment system according to claim 1, wherein: The first bracket and the second bracket are formed integrally.

8. The aftertreatment system according to claim 1, wherein: The first end of the first bracket also includes a face configured to abut a perimeter of and extend at least partially around a perimeter of at least one of the first or third aftertreatment system components.

9. The aftertreatment system of claim 1 , wherein: The surface also includes: at least one of a pad, a damper, or a barrier configured to reduce noise or friction between a surface of the face and the second aftertreatment system component; and The second bracket and the face include an opening therein to form an exposed portion of the second aftertreatment system component adjacent a portion of the second aftertreatment system component that interfaces with the face.

10. The aftertreatment system according to claim 1, wherein: The second bracket interfaces with the second aftertreatment system component at a location of maximum vibration, free body motion, or stress along the length of the second aftertreatment system component.

11. A post-processing system comprising: a first aftertreatment system component; a second aftertreatment system component having a first end and a second end, wherein the first end is coupled to the first aftertreatment system component; a third aftertreatment system component coupled to the second end of the second aftertreatment system component; a first bracket having at least a first end and a second end, wherein the first end of the first bracket is coupled to the first aftertreatment system component or the third aftertreatment system component; a second bracket having a first end and a second end, wherein the first end of the second bracket is coupled to the second aftertreatment system component; and An isolator is coupled to the second end of the first bracket and the second end of the second bracket.

12. The aftertreatment system of claim 11, wherein: The isolator includes a first through hole and a second through hole; and The second end of the first bracket is positioned within the first through-hole and couples the first bracket to the isolator, and the second end of the second bracket is positioned within the second through-hole and couples the second bracket to the isolator.

13. A transportation system comprising: The aftertreatment system according to claim 11; as well as a chassis coupled to the first aftertreatment system component and the third aftertreatment system component; The second aftertreatment system component is coupled to the chassis via the first bracket, the second bracket, the isolator, and at least one of the first aftertreatment system component or the third aftertreatment system component.

14. The aftertreatment system of claim 11, wherein: The first, second, and third aftertreatment system components are coupled in series such that exhaust gas flows from the first aftertreatment system component through the second aftertreatment system component and then into the third aftertreatment system component; and The first aftertreatment system component, the second aftertreatment system component, and the third aftertreatment system component each include at least one of an exhaust conduit, a decomposition chamber, a reactor, a reactor pipe, a diesel particulate filter (DPF), a selective catalytic reduction (SCR) catalyst, a diesel oxidation catalyst (DOC), or an ammonia slip (AMOX) catalyst.

15. The aftertreatment system of claim 14, wherein: The first aftertreatment system component includes the DPF; said second aftertreatment system component comprising said decomposition chamber; and The third aftertreatment system component includes the SCR catalyst.

16. The aftertreatment system according to claim 11, wherein: The first end of the first bracket is shaped such that the first end extends along a surface of the first aftertreatment system component or the third aftertreatment system component.

17. The aftertreatment system of claim 16, wherein: At least one of the first aftertreatment system component or the third aftertreatment system component includes a groove or recess; and The first end of the first bracket is received within the slot or recess.

18. The aftertreatment system according to claim 11, wherein: The first end of the second bracket is coupled to the second aftertreatment system component at a location of maximum vibration, free body motion, or stress along the length of the second aftertreatment system component.

19. The aftertreatment system of claim 11, further comprising: a third bracket having at least a first end and a second end, the first end of the third bracket being coupled to the third aftertreatment system component; a fourth bracket having a first end and a second end, the first end of the fourth bracket being coupled to the second aftertreatment system component; and a second isolator coupled to the second end of the third bracket and the second end of the fourth bracket; The first end of the first bracket is coupled to the first aftertreatment system component.

20. A post-processing system comprising: a first aftertreatment system component; a second aftertreatment system component having a first end and a second end, wherein the first end is coupled to the first aftertreatment system component; a third aftertreatment system component coupled to the second end of the second aftertreatment system component; a first bracket having at least a first end and a second end, wherein the first end of the first bracket is coupled to the first aftertreatment system component; a second bracket having a first end and a second end, wherein the second bracket is coupled to the second aftertreatment system component; a first isolator coupled to the second end of the first bracket and the second end of the second bracket; a third bracket having at least a first end and a second end, wherein the first end of the third bracket is coupled to the third aftertreatment system component; and A second isolator is coupled to the second end of the second bracket and the second end of the third bracket.

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