System for adaptive regeneration of aftertreatment system components

Abstract

System, comprising: an aftertreatment system (100); and a controller (120) configured to: Accessing one or more parameters indicative of an ambient temperature condition within a housing enclosing the aftertreatment system (100), Determining a regeneration type of a regeneration process for a component of an aftertreatment system (100), Determining an application condition, Determining a target temperature for the regeneration process, and Lowering the target temperature based on the one or more parameters indicative of the ambient temperature condition within the enclosure enclosing the aftertreatment system (100).

Description

TECHNICAL FIELD

[0001] The present application generally deals with the field of aftertreatment systems for internal combustion engines. BACKGROUND

[0002] Internal combustion engines, such as diesel engines, can release nitrogen oxide (NOx) compounds into the exhaust gas. To reduce NOx emissions, a selective catalytic reduction (SCR) process can be used to convert the NOx compounds into neutral compounds such as diatomic nitrogen, water, or carbon dioxide using a catalyst and a reducing agent. The catalyst can be contained in a catalyst chamber of an exhaust system, such as that of a vehicle or a power generation unit. A reducing agent, such as ammonia anhydride, aqueous ammonia solution, or urea, is typically introduced into the exhaust stream upstream of the catalyst chamber.To introduce the reductant for the SCR process into the exhaust stream, an SCR system may meter or otherwise introduce the reductant through a dosing module that vaporizes or sprays the reductant into an exhaust pipe of the exhaust system upstream of the catalyst chamber. The SCR system may include one or more sensors to monitor conditions within the exhaust system.From DE 10 2008 044 309 A1 a method for dynamically adapting a temperature setpoint for exhaust gas aftertreatment devices is known, which comprises estimating an amount of reducing agents trapped in the exhaust gas aftertreatment device, predicting the resulting temperature resulting from combustion of an amount of the trapped reducing agents, wherein a temperature increase is determined and added to the current temperature, forming a difference between the predicted temperature and the setpoint temperature and adapting the exothermic setpoint reaction in the substrate by means of the previously formed difference. SUMMARY

[0003] The implementations described herein relate to systems for adaptive regeneration of aftertreatment system components. In particular, the system senses ambient conditions and estimates system conditions. The system then adapts a regeneration process to mitigate the impact of the regeneration process on the system based on the ambient conditions and system conditions. For example, the system may sense the ambient temperature surrounding an engine and / or aftertreatment system and estimate system temperature conditions. If the sensed ambient temperature and / or estimated system temperature conditions may affect aftertreatment system components, the regeneration process may be modified (e.g., changing an initiation trigger and / or shortening a duration) to reduce the impact on the aftertreatment system components.For example, if an aftertreatment system is located in a confined ventilation area and / or is positioned where the aftertreatment system may be susceptible to potential heat concentrations, the system can adapt the regeneration process to lower system envelope temperatures to reduce the thermal stress on the aftertreatment system components.

[0004] The invention relates to systems, methods and devices according to independent claims 1, 9 and 17. Preferred embodiments are defined by the dependent claims. SHORT DESCRIPTION

[0005] The details of one or more implementations are set forth in the accompanying drawings and the description below. Other features, aspects, and advantages of the disclosure will become apparent from the description, drawings, and claims, to which: Fig. 1 is a schematic diagram of an exemplary selective catalytic reduction system with an exemplary reductant delivery system for an exhaust system; Fig. 2 is a block diagram of an engine and aftertreatment system in an environment; Fig. 3 is a process diagram of an implementation of a process for adaptively regenerating an aftertreatment component; and Fig. Figure 4 is a control diagram of an implementation of an adaptive regeneration process for an aftertreatment component.

[0006] It should be noted that some or all of the figures are schematic representations for illustrative purposes. The figures are provided for the purpose of illustrating one or more implementations with the explicit understanding that they will not be used to limit the scope or meaning of the claims. DETAILED DESCRIPTION

[0007] The following are more detailed descriptions of various concepts related to and implementations of methods, apparatus, and systems for the adaptive regeneration of aftertreatment system components. The various concepts presented above and described in detail below can be implemented in one of numerous ways, as the described concepts are not limited to any particular implementation. Examples of specific implementations and applications are provided primarily for illustrative purposes. I. OVERVIEW

[0008] In some cases, an engine with an aftertreatment system may be located in an environment that may affect components of the aftertreatment system, such as a closed or partially enclosed environment, a non-ventilated environment, a high-temperature environment, a low-temperature environment, etc. The engines and aftertreatment systems may generate heat or otherwise affect the ambient conditions. In some cases, a controller for the aftertreatment system may be configured to perform a regeneration process to regenerate one or more components of the aftertreatment system during operation. For example, a diesel particulate filter (DPF) regeneration process may be initiated by raising an engine exhaust temperature above engine operating conditions and / or by introducing additional thermal heat into the exhaust downstream of the engine exhaust outlet (e.g.,by injecting combustible fuel downstream of the exhaust gas, etc.). Likewise, other regeneration processes may be performed for other components of the aftertreatment system, such as a selective catalytic reduction (SCR) catalyst, an ammonia oxidation (AMOX) component, etc. These regeneration processes may increase an exhaust gas temperature within the aftertreatment system to regenerate the components, e.g., by burning trapped material.

[0009] The increased exhaust gas temperature in the aftertreatment system thermally heats the aftertreatment system tubes or other casings, thereby increasing the ambient tube or casing shell temperature. The increased shell temperature can result in convective, conductive, and / or radiative heat transfer to the atmosphere or other components near the piping and / or other aftertreatment system casing. In some cases, the increase in heat transfer to the atmosphere surrounding the aftertreatment system and / or to components coupled to the exterior of the aftertreatment system can adversely affect the operating conditions for aftertreatment system components or, such as in the case of a cold operating environment, prevent adverse operating conditions for those components.Thus, an adaptive regeneration system for aftertreatment system components may be used to maintain operating conditions for aftertreatment system components so that they do not exceed the upper thermal operating conditions or the lower thermal operating conditions. The adaptive regeneration system described herein may be used to influence the temperature of the atmosphere surrounding the aftertreatment system and / or components directly coupled to the aftertreatment system (e.g., sensor mounts and / or the aftertreatment system itself).In some implementations, the adaptive regeneration system may be further used to enable the aftertreatment system to fit into a smaller volume by controlling the aftertreatment system envelope temperatures so that they do not exceed a maximum target temperature, such as a temperature for other components attached near the aftertreatment system and / or structural components of the structure to which the aftertreatment system is attached, such as a vehicle frame, floor pan, etc., or a building component. II. OVERVIEW OF THE AFTERTREATMENT SYSTEM

[0010] Fig. 1 illustrates an aftertreatment system 100 with an exemplary reductant delivery system 110 for an exhaust system 190. The aftertreatment system 100 includes a particulate filter (e.g., a diesel particulate filter (DPF) 102), a reductant delivery system 110, a decomposition chamber or reactor 104, an SCR catalyst 106, and a sensor 150.

[0011] The DPF 102 is configured to remove particulate matter, such as soot, from exhaust gas flowing within the exhaust system 190. The DPF 102 includes an inlet through which the exhaust gas enters and an outlet through which the exhaust gas exits after particulate matter has been substantially filtered from the exhaust gas and / or particulate matter has been converted to carbon dioxide.

[0012] The decomposition chamber 104 is configured to convert a reductant, such as urea or diesel exhaust fluid (AdBlue), into ammonia. The decomposition chamber 104 includes the reductant delivery system 110 with a dosing module 112 configured to dose the reductant into the decomposition chamber 104. In some implementations, the reductant is injected prior to the SCR catalyst 106. The reductant droplets then undergo the processes of vaporization, thermolysis, and hydrolysis to form gaseous ammonia within the exhaust system 190. The decomposition chamber 104 includes an inlet in fluid communication with the DPF 102 to receive the exhaust gas containing NOx emissions, and an outlet for the exhaust gas, NOx emissions, ammonia, and / or remaining reductant to flow to the SCR catalyst 106.

[0013] The decomposition chamber 104 includes the dosing module 112 attached to the decomposition chamber 104 such that the dosing module 112 can dose the reductant into the exhaust gases flowing into the exhaust system 190. The dosing module 112 can include an isolator 114 disposed between a portion of the dosing module 112 and the portion of the decomposition chamber 104 to which the dosing module 112 is mounted. The dosing module 112 is fluidly coupled to one or more reductant sources 116. In some implementations, a pump 118 can be used to pressurize the reductant source 116 for supply to the dosing module 112.

[0014] The dosing module 112 and the pump 118 are also electrically or communicatively coupled to a controller 120. The controller 120 is configured to control the dosing module 112 to dose reducing agent into the decomposition chamber 104. The controller 120 may also be configured to control the pump 118. The controller 120 may include a microprocessor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), etc., or combinations thereof. The controller 120 may include a memory, including, but not limited to, an electronic, optical, magnetic, or other data storage or transmission device capable of providing program instructions to a processor, ASIC, FPGA, etc.The memory may include a memory chip, an electrically erasable programmable read-only memory (EEPROM), an erasable programmable read-only memory (EPROM), a flash memory, or other suitable memory from which the controller 120 can read instructions. The instructions may include code from any suitable programming language.

[0015] In certain implementations, the controller 120 is structured to perform certain operations, such as those described herein with respect to the Fig. 3. In certain implementations, controller 120 represents part of a processing subsystem that includes one or more computing devices with storage, processing, and communication hardware. Controller 120 may be a single device or a distributed device, and the functions of controller 120 may be performed by hardware and / or as computer instructions on a non-transitory, computer-readable data storage medium.

[0016] In certain implementations, the controller 120 includes one or more modules structured to functionally perform the operations of the controller 120. In certain implementations, the controller 120 may include a regeneration module and a regeneration adjustment module for performing the Fig. 3. The description herein, including modules, emphasizes the structural independence of the aspects of the controller 120 and illustrates possible grouping of operations and responsibilities of the controller 120. Other groupings that perform similar overall operations are to be considered within the scope of the present application. Modules may be implemented in hardware and / or as computer instructions on a non-transitory, computer-readable data storage medium, and modules may be distributed across various hardware or computer-based components.

[0017] More detailed descriptions of specific embodiments of the control operations are provided in the section on Fig. 3 can be found.

[0018] Exemplary and non-limiting module implementation elements include sensors that provide any value specified herein, sensors that provide any value that is a precursor to a value specified herein, datalink and / or network hardware including communication chips, oscillating crystals, communication links, cables, twisted pair wiring, coaxial wiring, shielded wiring, transmitters, receivers and / or transceivers, logic circuits, hard-wired logic circuits, reconfigurable logic circuits in a specific, non-volatile state configured according to the module specification, actuators including at least one electrical, hydraulic or pneumatic actuator, a solenoid, an operational amplifier, analog control elements (springs, filters, integrators, adders, dividers,amplification elements) and / or digital control elements.,

[0019] The SCR catalyst 106 is configured to contribute to the reduction of NOx emissions by accelerating a NOx reduction process between the ammonia and the NOx of the exhaust gas into diatomic nitrogen, water, and / or carbon dioxide. The SCR catalyst 106 includes an inlet in fluid communication with the decomposition chamber 104, from which exhaust gas and reductant are received, and an outlet in fluid communication with one end of the exhaust system 190.

[0020] The exhaust system 190 may further include a diesel oxidation catalyst (DOC) in fluid communication with the exhaust system 190 (e.g., downstream of the SCR catalyst 106 or upstream of the DPF 102) to oxidize hydrocarbons and carbon monoxide in the exhaust gas.

[0021] In some implementations, the DPF 102 may be positioned downstream of the decomposition chamber or reactor 104. For example, the DPF 102 and the SCR catalyst 106 may be combined into a single unit (also referred to as an SDPF). In some implementations, the dosing module 112 may instead be positioned downstream of a turbocharger or upstream of a turbocharger.

[0022] The sensor 150 may be coupled to the exhaust system 190 to detect a condition of the exhaust flow through the exhaust system 190. In some implementations, the sensor 150 may have a portion disposed within the exhaust system 190, e.g., a tip of the sensor 150 may extend into a portion of the exhaust system 190. In other implementations, the sensor 150 may receive exhaust through another conduit, such as a sample tube extending from the exhaust system 190. While the sensor 150 is illustrated as being positioned downstream of the SCR catalyst 106, it should be understood that the sensor 150 may be positioned at other locations of the exhaust system 190, including upstream of the DPF 102, within the DPF 102, between the DPF 102 and the decomposition chamber 104, within the decomposition chamber 104, between the decomposition chamber 104 and the SCR catalyst 106, within the SCR catalyst 106, or behind the SCR catalyst 106.Additionally, two or more sensors 150 may be used to detect a condition of the exhaust gas, such as two, three, four, five, or six sensors 150, with each sensor 150 located at one of the aforementioned positions of the exhaust system 190.

[0023] As in Fig. 2, the aftertreatment system 100 may be coupled to an engine 200 and positioned within an environment 210. The aftertreatment system 100 may be in fluid communication with one or more exhaust manifolds of the engine to receive exhaust gas from the engine 200. In some implementations, one or more turbochargers may be positioned in fluid communication between the one or more exhaust manifolds and the aftertreatment system to receive exhaust gases for operating a compressor from each of the one or more turbochargers.

[0024] The environment 210 may be a closed environment, such as a generator housing, a ship's hold, etc. In some cases, the environment 210 may not be ventilated or may have reduced ventilation, such as a substantially closed enclosure that is stationary. In other implementations, the environment 210 may include other components and / or structures in communication with the engine 200 and / or with an exhaust aftertreatment system 100. For example, the environment 210 may include one or more brackets for mounting the aftertreatment system 100 and / or the engine 200. In other implementations, the environment 210 may include a vehicle frame, a floor pan, a body panel, a vehicle sensor, a vehicle controller, etc. In further implementations, the environment 210 may include buildings or other structural elements, such as a wall, a divider, a support beam, etc.In some cases, the aftertreatment system 100 itself may include components influenced by the thermal conditions of the environment 210. For example, electrical components for the aftertreatment system 100 may be mounted on the outside of a pipe or other housing of the aftertreatment system 100. In some cases, the electrical components may include sensors such as a particulate sensor, NOx sensor, NH3 sensor, CO2 sensor, CO sensor, temperature sensor, pressure sensor, delta pressure sensor, mass flow sensor, etc. The sensors may be mounted via brackets on the pipe or other housing component of the aftertreatment system 100.In some other cases, the electrical components may include one or more controllers or other electronic components for controlling the operation of the aftertreatment system 100, the engine 200, and / or other devices associated with the engine 200, the aftertreatment system 100, or a vehicle or structure in which the engine 200 and / or the aftertreatment system 100 are mounted. III. IMPLEMENTATIONS OF ADAPTIVE REGENERATION SYSTEMS

[0025] With general reference to Fig. 3, the process 300 may be executed by a controller, such as the controller 120 of Fig. 1, may be implemented to adaptively control one or more regeneration processes for regenerating components of an aftertreatment system, such as aftertreatment system 100. Process 300 senses and / or estimates ambient and / or system conditions and adjusts one or more parameters for a regeneration process in response to the sensed and / or estimated ambient and / or system conditions.In some implementations, such as situations where high thermal conditions exist for an environment in which the engine and / or aftertreatment system are operating, adjusting the regeneration process may mitigate increases in the thermal temperatures of the aftertreatment system and / or the engine, the atmosphere in which the engine and / or aftertreatment system are operating, the thermal concentrations relative to the engine and / or aftertreatment system, and / or thermal conditions of components coupled to, located near, or otherwise affected by the increase in the thermal temperature of the engine and / or aftertreatment system.For example, an aftertreatment system may be installed in a closed or confined space with minimal ventilation flow, which may result in heat generated by an aftertreatment system regeneration process not being easily dissipated. Heat generation from the regeneration process can lead to thermal concentrations as the generated heat rises, which may impact one or more engine and / or aftertreatment system components and / or other coupled components located near the regeneration process or otherwise thermally affected.

[0026] In further implementations, such as situations where low thermal conditions exist for an environment in which the engine and / or aftertreatment system are operating, adjusting the regeneration process may increase the thermal temperatures of the aftertreatment system and / or the engine, the atmosphere in which the engine and / or aftertreatment system are operating, the thermal concentrations relative to the engine and / or aftertreatment system, and / or thermal conditions of components coupled to, located near, or otherwise affected by the increase in the thermal temperature of the engine and / or aftertreatment system.

[0027] Process 300 includes accessing one or more parameters indicative of an ambient condition and / or an operating condition of the engine and / or aftertreatment system (block 310), determining a regeneration type (block 320), determining an application condition (block 330), modifying a parameter for a regeneration process (block 340), and, in some cases, initiating a regeneration process (block 350).

[0028] Accessing one or more parameters indicative of an ambient condition and / or an operating condition of the engine and / or the aftertreatment system (block 310) may include accessing a parameter stored in a memory of a controller and / or accessing a parameter from a sensor. In some implementations, the parameters may include an ambient air temperature, a reductant tank temperature (e.g., a DEF tank temperature in certain embodiments), and a PM sensor temperature. The ambient air temperature may be measured by an ambient temperature sensor and / or determined based on other parameters, such as an air intake temperature parameter, etc. The DEF tank temperature may be measured by a DEF tank temperature sensor and / or determined based on other parameters, such as a DEF doser temperature parameter, etc.The PM sensor temperature may be measured by or coupled to a temperature sensor near the PM sensor temperature and / or may be a temperature measurement by the PM sensor itself. Other ambient and / or operating conditions of the engine and / or exhaust aftertreatment system may have parameters that may also be accessed, such as an aftertreatment system shell temperature, a mounting bracket temperature, a control temperature, a vehicle frame temperature, a floor pan temperature, a body part temperature, a building element temperature, an engine temperature, etc.

[0029] Based on the ambient conditions and / or operating conditions of the engine and / or aftertreatment system, the process applies an adjustment to control a regeneration process. In some implementations, this may include lowering the regeneration setpoint temperature to reduce heat generation and / or other modifications.

[0030] The process 300 includes determining a regeneration type (block 320). For some regeneration processes, a high temperature and / or operating condition affects the effectiveness of the regeneration process. Thus, the process 300 determines a type of regeneration process that is about to occur and / or will occur next based on conditions of the aftertreatment system components. In some implementations, the process 300 may determine all enabled regeneration processes for the aftertreatment system and / or all regeneration processes that will or are likely to occur in a predetermined future period (e.g., in the next hour, two hours, three hours, four hours, five hours, six hours, twelve hours, twenty-four hours, etc.).

[0031] Process 300 includes determining an application condition (block 330). The application condition may be the current operating mode of the engine or other operating conditions for the engine coupled to the aftertreatment system. Similar to the high temperature required for certain regeneration processes, some regeneration processes may affect engine operation, such as decreasing engine speed, increasing engine speed, etc. Thus, determining the application condition may determine a vehicle speed and / or an operating mode. The operating mode may include a use or non-use operating mode (e.g., an operating or idle state). In some implementations, process 300 determines the current application condition and / or the one that will occur next.In some cases, process 300 may determine all enabled application conditions and / or determine all application conditions that will or are likely to occur in a predetermined future period (e.g., in the next hour, two hours, three hours, four hours, five hours, six hours, twelve hours, twenty-four hours, etc.).

[0032] Process 300 further includes modifying a parameter for a regeneration process (block 340). In some implementations, the modified parameter may be a target regeneration temperature, a regeneration duration, a residence time between regeneration processes, a threshold for the regeneration process (e.g., a particulate mass and / or storage amount, a sintering amount, a NOx and / or ammonia storage amount, a sulfur oxide (SOx) storage amount, etc.), a minimum regeneration temperature, etc. In some cases, combinations of two or more of the aforementioned parameters may be modified. The modified parameters affect the operation of a regeneration process.

[0033] For example, the target regeneration temperature can be reduced to reduce the overall temperature and the heat generated by the regeneration process, or increased to increase the overall temperature and the heat generated by the regeneration process. In some cases, the regeneration duration, the dwell time between regeneration processes, the regeneration threshold, and / or the minimum regeneration temperature can be adjusted based on the lower target regeneration temperature.

[0034] In some cases, the regeneration duration can be reduced to reduce the overall temperature and the heat generated by the regeneration process, or increased to increase the overall temperature and the heat generated by the regeneration process. In some cases, the target regeneration temperature, the dwell time between regeneration processes, the regeneration process threshold, and / or the minimum regeneration temperature can be adjusted based on the reduced regeneration duration.

[0035] In some cases, the residence time between regeneration processes can be increased to increase the heat dissipation time of the temperature and heat generated by the regeneration process, or reduced to decrease the heat dissipation time of the temperature and heat generated by the regeneration process. In some cases, the target regeneration temperature, regeneration duration, regeneration threshold, and / or minimum regeneration temperature can be adjusted based on the reduced regeneration duration.

[0036] In some cases, the threshold for the regeneration process can be increased or decreased to decrease the frequency of the regeneration process, or to increase or decrease the heat dissipation time for the temperature and heat generated by the regeneration process. In some cases, the target regeneration temperature, regeneration duration, dwell time between regeneration processes, and / or minimum regeneration temperature can be adjusted based on the reduced regeneration duration.

[0037] In some cases, the minimum regeneration temperature can be increased or decreased to decrease the frequency of the regeneration process, or to increase or decrease the heat dissipation time for the temperature and heat generated by the regeneration process. In some cases, the target regeneration temperature, regeneration duration, residence time between regeneration processes, and / or the regeneration threshold can be adjusted based on the reduced regeneration duration.

[0038] Thus, process 300 provides adaptation to the regeneration process in response to the ambient and / or operating conditions, the regeneration type, and the application condition. In some implementations, process 300 further includes initiating a regeneration process (block 350). The initiated regeneration process may be based on one or more of the modified parameters and / or adapted based on one or more modified parameters. The regeneration process may influence one or more operating conditions of the engine and / or aftertreatment system to increase or decrease the temperature of the exhaust gas, increase or decrease a mass flow rate, and / or increase or decrease a flow velocity to regenerate an aftertreatment system component, such as a DPF, an SCR catalyst, an AMOX, a sensor, etc.

[0039] Fig.4 illustrates a control diagram of an implementation of a process 400 for adaptive regeneration of an aftertreatment component. Process 400 lowers a target regeneration temperature to reduce the heat generated by the regeneration process. When regeneration is requested, the minimum of the lowered target regeneration temperature and a current target temperature may be selected as the target regeneration temperature for the regeneration process.

[0040] The process 400 may include an ambient air temperature check and / or a DEF tank temperature check 410. The ambient air temperature check and / or the DEF tank temperature check 410 may compare a measured ambient air temperature to a threshold ambient air temperature and / or a DEF tank temperature to a threshold DEF tank temperature. In some implementations, a timer 420 may be implemented to perform an ambient air temperature check and / or a DEF tank temperature check 410 at predetermined time intervals based on the timer 420. A particulate sensor temperature check 430 may also occur at predetermined time intervals based on the timer 420. The particulate sensor temperature check 430 may compare a measured particulate sensor temperature, such as a temperature of the sensor itself or a controller or circuit board for the particulate sensor.A parameter may be passed to a conditional target regeneration temperature arbitration system 450. The parameter may indicate one or more pass and / or fail results of the ambient air temperature check and / or the DEF tank temperature check 410 and / or the particulate sensor temperature check 430. In some implementations, more than one parameter may be passed in response to the ambient air temperature check and / or the DEF tank temperature check 410 and / or the particulate sensor temperature check 430.

[0041] The conditional target regeneration temperature arbitration system 450 may also receive one or more parameters indicative of a regeneration type selection 460, a vehicle speed check 470, and / or a deployment or non-deployment selection 480. The regeneration type selection 460 may determine one or more regeneration types and pass one or more parameters indicative of the regeneration type(s). In some regeneration processes, a high temperature and / or operating condition affects the effectiveness of the regeneration process. Thus, the regeneration type selection 460 determines a type of regeneration process that is about to occur and / or will occur next based on conditions of the aftertreatment system components.In some implementations, the regeneration type selection 460 may determine all enabled regeneration processes for the aftertreatment system and / or all regeneration processes that will or are likely to occur in a predetermined future period (e.g., in the next hour, two hours, three hours, four hours, five hours, six hours, twelve hours, twenty-four hours, etc.).

[0042] The vehicle speed check 470 may compare a measured vehicle speed to a threshold vehicle speed. The vehicle speed may be an engine speed, a transmission speed, and / or a speed. During certain regeneration processes, the regeneration process may affect the operation of the engine, such as reducing the engine speed, increasing the engine speed, etc. Thus, the vehicle speed check 470 may compare the vehicle speed with respect to a vehicle speed threshold to determine whether the target regeneration temperature can be adjusted based on the regeneration process relative to the vehicle speed. Similarly, the deployment or non-deployment selection 480 may determine a deployment or non-deployment operating mode (e.g., an operating or idle state of the engine).

[0043] The conditional desired regeneration temperature arbitration system 450 may arbitrate the passed parameters indicative of the ambient air temperature and / or DEF tank temperature check 410, the PM sensor temperature check 430, the regeneration type selection 460, the vehicle speed check 470, and the deployment or non-deployment selection check 480 to determine whether to lower a desired regeneration temperature and to what lower temperature level the desired regeneration temperature should be lowered based on the passed parameters and / or whether to maintain an original desired regeneration temperature.

[0044] If a reduced target regeneration temperature is selected, a parameter indicating the reduced target regeneration temperature is passed to the regeneration control logic 490 for the corresponding regeneration process.

[0045] As described herein, the adaptive regeneration system of an aftertreatment system component may estimate a heat concentration state based on the measurement of ambient air temperature, DEF tank temperature, and PM sensor temperature. Based on the estimated heat concentration state, the system may adjust one or more parameters for a regeneration process to control the regeneration process. In some implementations, a lowered target regeneration temperature is determined based on the estimated heat concentration state, the regeneration type(s), the vehicle speed, and the operating mode.

[0046] The term "controller" includes all types of devices, apparatus, and machines for processing data, including, for example, a programmable processor, a computer, a system on a chip (SOC), or multiple thereof, a portion of a programmed processor, or combinations of the foregoing. The device may include dedicated logic circuitry, such as an FPGA or ASIC. The device may also include, in addition to hardware, code that creates an execution environment for the computer program in question, such as code representing processor firmware, a protocol stack, a database management system, an operating system, a cross-platform runtime environment, a virtual machine, or a combination of one or more thereof.The device and the execution environment can implement various different computing model infrastructures, such as distributed computing and grid computing infrastructures.

[0047] A computer program (also known as a program, script, or code) can be written in any form of programming language, including compiled or interpreted languages, declarative or procedural languages, and it can be deployed in any form, for example, as a stand-alone program or as a module, component, subroutine, object, or other unit suitable for use in a computing environment. A computer program may, but is not necessarily, equivalent to a file in a file system. A program may be stored in a section of a file containing other programs or data (for example, one or more scripts stored in a markup language document), in a single dedicated file for the program in question, or in multiple coordinated files (for example, files storing one or more modules, subroutines, or pieces of code).

[0048] Although this document 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 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, separately or in any suitable subcombination.In addition, although the above features may be described as functioning in certain combinations and may initially be claimed as such, in some cases one or more features from a claimed combination may be singled out from the combination, and the claimed combination may be directed to a subcombination or variation of a subcombination.

[0049] Similarly, while operations are illustrated in the drawings in a particular order, this should not be understood to require that these operations be performed in that particular order or in sequential order, or that all of the illustrated operations be performed to achieve desirable results. Under certain circumstances, the separation of various system components in the implementations described above may not be understood to require such separation in all implementations, and it should be understood that the described components and systems may generally be integrated into a single product or may be packaged in multiple products embodied on tangible media.

[0050] As used herein, the terms "substantially" and similar terms are intended to have a broad meaning consistent with the commonly accepted usage by those skilled in the art to which the subject matter of this disclosure belongs. It will be apparent to those skilled in the art reading this disclosure that these terms are intended to permit description of certain described and claimed features without limiting the scope of those features to the precise numerical ranges provided. Accordingly, these terms should be construed to indicate that insignificant or insignificant modifications or variations to the described and claimed subject matter are considered within the scope of the invention as recited in the appended claims.In addition, it is stated that limitations of the claims, in the event that the term "means" is not used therein, are not to be interpreted as constituting "means plus function" limitations under the United States patent laws.

[0051] The terms "coupled," "connected," and the like, as used herein, mean the direct or indirect connection of two components to one another. This connection may be stationary (e.g., permanent) or movable (e.g., removable or detachable). This connection may be achieved by the two components, or the two components and any other intermediate components, being integrally formed with one another as a single unitary body, or by the two components, or the two components and any other intermediate components, being attached to one another.

[0052] The terms "fluidly coupled" or "in fluid communication," and the like, as used herein, mean that the two components or objects have a path formed between the two components or objects in which a fluid, such as water, air, gaseous reductant, gaseous ammonia, etc., can flow, either with or without intervening components or objects. Examples of fluid couplings or configurations for enabling fluid communication may include tubes, channels, or any other suitable components for enabling the flow of a fluid from one component to another.

[0053] It is important to note that the construction and arrangement of the system shown in the various example implementations are merely illustrative and not restrictive. It is desired that all changes and modifications that fall within the spirit and / or scope of the described implementations be protected. It is understood that some features are not necessary, and implementations lacking the various features are considered within the scope of the application, which scope is defined by the following claims. In reading the claims, it is intended that the use of words such as "a," "an," "at least one," or "at least one portion" / "at least one portion / part," and their declinations, is not intended to limit the claim to only one subject matter, unless the claim expressly states otherwise.Where the terms “at least one section” / “at least one share / portion” and / or “a section” / “a share / portion” are used, the subject matter may include a section / a share / portion and / or the entire subject matter, unless expressly stated otherwise. LIST OF REFERENCE SYMBOLS 100 aftertreatment system 102 diesel particulate filters 104 reactor 106 SCR catalyst 110 Reductant supply system 112 Dosing module 114 Insulator 116 Reducing agent source 118 Pump 120 Control 150 sensors 190 exhaust system 200 engine 210 surroundings

Claims

[1] System comprising: an aftertreatment system (100); and a controller (120) configured to: Accessing one or more parameters indicative of an ambient temperature condition within a housing enclosing the aftertreatment system (100), Determining a regeneration type of a regeneration process for a component of an aftertreatment system (100), Determining an application condition, Determining a target temperature for the regeneration process, and Lowering the target temperature based on the one or more parameters indicative of the ambient temperature condition within the enclosure enclosing the aftertreatment system (100). [2] The system of claim 1, wherein the controller (120) is further configured to initiate the regeneration process for the component of the aftertreatment system (100). [3] The system of claim 1 or 2, wherein the controller (120) is further configured to access one or more parameters indicative of an operating state. [4] The system of claim 3, wherein the one or more parameters indicative of the operating condition comprise at least one of an envelope temperature of the aftertreatment system (100), a mounting bracket temperature, a controller temperature, a vehicle frame temperature, a floor panel temperature, a body part temperature, a building element temperature, or an engine temperature. [5] The system of claim 3 or 4, wherein the target temperature for the regeneration process is modified in response to at least one of the one or more parameters indicative of the ambient temperature condition within the housing enclosing the aftertreatment system (100), the one or more parameters indicative of the operating condition, the particular regeneration type, or the particular application condition. [6] The system of any one of claims 1 to 5, wherein the one or more parameters indicative of the ambient temperature condition within the housing enclosing the aftertreatment system (100) comprise at least one of an ambient air temperature, a reductant tank temperature, or a particulate sensor temperature. [7] The system of any one of claims 1 to 6, wherein the controller (120) is further configured to modify at least one of a parameter for a regeneration duration, a residence time between regeneration processes, a threshold for the regeneration process, or a minimum regeneration temperature. [8] The system of claim 7, wherein the threshold for the regeneration process comprises at least one of a particulate mass, a particulate storage amount, a sintering amount, a NOx storage amount, a SOx storage amount, or an ammonia storage amount. [9] Method comprising: Accessing one or more parameters indicative of an ambient temperature condition within a housing enclosing an aftertreatment system (100); Determining a regeneration type of a regeneration process for a component of an aftertreatment system (100); Determining an application condition; Determining a target temperature for the regeneration process; and Lowering said target temperature based on said one or more parameters indicative of the ambient temperature condition within the enclosure enclosing said aftertreatment system (100), said regeneration type, and said application condition. [10] The method of claim 9, further comprising initiating the regeneration process for the component of the aftertreatment system (100). [11] The method of claim 9 or 10, further comprising accessing one or more parameters indicative of an operating state. [12] The method of claim 11, wherein the one or more parameters indicative of the operating condition comprise at least one of an aftertreatment system (100) envelope temperature, a mounting bracket temperature, a controller temperature, a vehicle frame temperature, a floor panel temperature, a body part temperature, a building element temperature, or an engine temperature. [13] The method of claim 11, wherein the target temperature for the regeneration process is modified in response to at least one of the one or more parameters indicative of the ambient temperature condition within the enclosure enclosing the aftertreatment system (100), the one or more parameters indicative of the operating condition, the particular regeneration type, or the particular application condition. [14] The method of any one of claims 9 to 13, wherein the one or more parameters indicative of the ambient temperature condition within the housing enclosing the aftertreatment system (100) comprise at least one of an ambient air temperature, a reductant tank temperature, or a particulate sensor temperature. [15] The method of any one of claims 9 to 14, further comprising modifying at least one of a parameter for a regeneration duration, a residence time between regeneration processes, a threshold value for the regeneration process, or a minimum regeneration temperature. [16] The method of claim 15, wherein the threshold for the regeneration process is modified; and the threshold value for the regeneration process comprises a particulate mass, a particulate storage quantity, a sintering quantity, a NOx storage quantity, a SOx storage quantity or an ammonia storage quantity. [17] Device comprising: an ambient air temperature test circuit that compares a measured ambient air temperature within a housing enclosing an aftertreatment system (100) with a predetermined threshold; a regeneration selection circuit that determines a regeneration type of a regeneration process for a component of the aftertreatment system (100); and a conditional target regeneration temperature arbitration circuit that determines a target temperature for the regeneration process and lowers the target temperature based on the measured ambient air temperature within the enclosure enclosing the aftertreatment system (100) and the regeneration type. [18] The apparatus of claim 17, further comprising a regeneration control circuit that initiates the regeneration process for the component of the aftertreatment system (100). [19] The apparatus of claim 17 or 18, wherein the conditional target regeneration temperature arbitration circuit accesses one or more parameters indicative of an operating condition. [20] The apparatus of claim 19, wherein the one or more parameters indicative of the operating condition comprise at least one of an aftertreatment system (100) envelope temperature, a mounting bracket temperature, a controller temperature, a vehicle frame temperature, a floor panel temperature, a body panel temperature, a building element temperature, or an engine temperature.

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