Scavenging for particulate filter regeneration

Abstract

According to example embodiments, methods and systems for particulate filter regeneration of a particulate filter of a drive system of a vehicle are provided, including: obtaining, via one or more sensors of the vehicle, sensor data related to the drive system; determining, via a processor of the vehicle, using the sensor data, when particulate filter regeneration is needed; and when it is determined that particulate filter regeneration is needed, providing, via instructions provided by the processor, particulate filter regeneration while performing a scavenging of the drive system.

Description

Technical Field

[0001] The technical field generally relates to vehicles, and more specifically to methods and systems for controlling the regeneration of particulate filters in vehicle engines. Background Technology

[0002] Some modern vehicles have engines with turbochargers that force air into the engine, increasing its power. These turbochargers may include particulate filters, which require periodic regeneration due to the buildup of soot produced during the turbocharger's combustion process. However, in some cases, existing technologies may not always provide optimal particulate filter regeneration.

[0003] Therefore, it is desirable to provide improved methods and systems for controlling the regeneration of particulate filters in vehicles, including vehicle engines with turbochargers. Furthermore, other desirable features and characteristics of the invention will become apparent from the accompanying drawings and background information, as well as from the following detailed description and appended claims. Summary of the Invention

[0004] In an exemplary embodiment, a method for controlling particulate filter regeneration of a particulate filter in a drive system of a vehicle is provided, the method comprising: obtaining sensor data relating to the drive system via one or more sensors of the vehicle; using the sensor data via a processor of the vehicle to determine when particulate filter regeneration is required; and when particulate filter regeneration is determined to be required, providing particulate filter regeneration while performing scavenging for the drive system via instructions provided by the processor.

[0005] Similarly, in an exemplary embodiment, the step of obtaining sensor data includes obtaining soot data about the soot concentration in the particulate filter via one or more soot sensors of the vehicle; the step of determining when particulate filter regeneration is required includes determining via a processor that particulate filter regeneration is required when the soot concentration in the particulate filter exceeds a predetermined threshold; and the step of providing particulate filter regeneration includes providing particulate filter regeneration while performing scavenging for the drive system via instructions provided by the processor when the soot concentration in the particulate filter exceeds the predetermined threshold.

[0006] Similarly, in an exemplary embodiment, the step of obtaining sensor data further includes obtaining temperature data about the exhaust temperature of the drive system via one or more temperature sensors of the vehicle; and the method further includes increasing the intensity of scavenging while performing particulate filter regeneration if the exhaust temperature is below a predetermined threshold.

[0007] In the same exemplary embodiment, the method further includes terminating particulate filter regeneration and scavenging of the drive system via instructions provided by the processor when the soot concentration in the particulate filter is less than a predetermined threshold.

[0008] Similarly, in an exemplary embodiment, particulate filter regeneration and scavenging are performed for a turbocharger of the drive system, the turbocharger having a particulate filter and also including an intake valve and an exhaust valve, and scavenging is performed by selectively moving the intake valve and the exhaust valve to create valve overlap therebetween.

[0009] Similarly, in an exemplary embodiment, scavenging is performed by opening the intake valve and exhaust valve together, generating a predetermined amount of valve overlap while heating the particulate filter, according to instructions provided by the processor.

[0010] Similarly, in an exemplary embodiment, the step of obtaining sensor data includes obtaining temperature data about the exhaust temperature of the drive system via one or more temperature sensors of the vehicle; and the method further includes a predetermined amount of time based on the overlap of exhaust temperature regulating valves.

[0011] In another exemplary embodiment, a system for controlling particulate filter regeneration of a particulate filter in a drive system of a vehicle is provided. The system includes: one or more sensors configured to acquire sensor data relating to the drive system; and a processor coupled to the one or more sensors and configured to at least facilitate: determining, using the sensor data, that particulate filter regeneration is required; and, when it is determined that particulate filter regeneration is required, providing particulate filter regeneration via instructions provided by the processor while performing scavenging for the drive system.

[0012] Similarly, in an exemplary embodiment, the one or more sensors include one or more soot sensors configured to obtain soot data regarding the soot concentration in the particulate filter; and the processor is further configured to at least facilitate: determining that particulate filter regeneration is required when the soot concentration in the particulate filter exceeds a predetermined threshold; and providing particulate filter regeneration while performing scavenging for the drive system via instructions provided by the processor when the soot concentration in the particulate filter exceeds the predetermined threshold.

[0013] Also in an exemplary embodiment, the one or more sensors further include one or more temperature sensors configured to obtain temperature data regarding the exhaust temperature of the drive system; and the processor is further configured to at least facilitate increasing the intensity of scavenging air while performing particulate filter regeneration if the exhaust temperature is below a predetermined threshold.

[0014] Also in an exemplary embodiment, the processor is configured to at least facilitate the termination of particulate filter regeneration and scavenging of the drive system via instructions provided by the processor when the soot concentration in the particulate filter is less than a predetermined threshold.

[0015] Similarly, in an exemplary embodiment, particulate filter regeneration and scavenging are performed for a turbocharger of the drive system, the turbocharger having a particulate filter and also including an intake valve and an exhaust valve, and scavenging is performed by selectively moving the intake valve and the exhaust valve to create valve overlap therebetween.

[0016] Similarly, in an exemplary embodiment, scavenging is performed by opening the intake valve and exhaust valve together, generating a predetermined amount of valve overlap while heating the particulate filter, according to instructions provided by the processor.

[0017] Similarly, in an exemplary embodiment, the one or more sensors include one or more temperature sensors configured to obtain temperature data about the exhaust temperature of the drive system; and the processor is also configured to facilitate at least a predetermined amount of time based on the overlap of the exhaust temperature regulating valve.

[0018] In another exemplary embodiment, a vehicle is provided, comprising: a body; a drive system configured to generate movement of the body, the drive system including a particulate filter; one or more sensors configured to acquire sensor data relating to the drive system; and a processor coupled to the one or more sensors and configured to at least facilitate: determining, using the sensor data, that particulate filter regeneration is required; and, when it is determined that particulate filter regeneration is required, providing particulate filter regeneration via instructions provided by the processor while performing scavenging for the drive system.

[0019] Similarly, in an exemplary embodiment, the one or more sensors include one or more soot sensors configured to acquire soot data regarding the soot concentration in the particulate filter; and the processor is further configured to at least facilitate: determining that particulate filter regeneration is required when the soot concentration in the particulate filter exceeds a predetermined threshold; and providing particulate filter regeneration while performing scavenging for the drive system via instructions provided by the processor when the soot concentration in the particulate filter exceeds the predetermined threshold; and terminating particulate filter regeneration and scavenging for the drive system via instructions provided by the processor when the soot concentration in the particulate filter is less than the predetermined threshold.

[0020] Also in an exemplary embodiment, the one or more sensors further include one or more temperature sensors configured to obtain temperature data regarding the exhaust temperature of the drive system; and the processor is further configured to at least facilitate increasing the intensity of scavenging air while performing particulate filter regeneration if the exhaust temperature is below a predetermined threshold.

[0021] Similarly, in an exemplary embodiment, the drive system includes a turbocharger having a particulate filter and also includes an intake valve and an exhaust valve; and scavenging is performed by selectively moving the intake valve and the exhaust valve to create valve overlap therebetween.

[0022] Similarly, in an exemplary embodiment, scavenging is performed by opening the intake valve and exhaust valve together, generating a predetermined amount of valve overlap while heating the particulate filter, according to instructions provided by the processor.

[0023] Similarly, in an exemplary embodiment, the one or more sensors include one or more temperature sensors configured to obtain temperature data about the exhaust temperature of the drive system; and the processor is also configured to facilitate at least a predetermined amount of time based on the overlap of the exhaust temperature regulating valve. Attached Figure Description

[0024] The present disclosure will now be described in conjunction with the following accompanying drawings, wherein like reference numerals denote like elements, and wherein:

[0025] Figure 1 This is a functional block diagram of a vehicle having a drive system and a control system according to an exemplary embodiment. The drive system has an engine having a turbocharger including a particulate filter, and the control system is used to control the particulate filter of the turbocharger using scavenging air.

[0026] Figure 2 This is according to an exemplary embodiment. Figure 1 A functional block diagram of a portion of a drive system, which includes engine components and its turbocharger, and the drive system can be combined with... Figure 1 To achieve this through vehicles; and

[0027] Figure 3 A flowchart illustrating a process for controlling the regeneration of a particulate filter in a vehicle, according to an exemplary embodiment, is depicted. The vehicle includes a vehicle engine with a turbocharger and can be combined with... Figure 1 The use of vehicles, including Figure 1 and Figure 2 Drive system and Figure 1 The control system. Detailed Implementation

[0028] The following detailed description is exemplary in nature only and is not intended to limit this disclosure or its application and use. Furthermore, it is not intended to be bound by the foregoing background information or any theories set forth in the following detailed description.

[0029] Figure 1A vehicle 100 is shown. In various embodiments, and as described in more detail below, the vehicle 100 includes a drive system 102 and a control system 104. Likewise, as described below according to various embodiments, the drive system 102 includes an engine 112 and a turbocharger 114 having a particulate filter 116, and the control system 104 controls the particulate filter regeneration of the particulate filter 116 via scavenging air for the turbocharger 114 (e.g., as described below in various embodiments). Figure 1 100 vehicles Figure 1 and Figure 2 Drive system and Figure 3 The process is described in further detail in 300.

[0030] In various embodiments, vehicle 100 includes a vehicle. Vehicle 100 can be any of many different types of vehicles, such as sedans, vans, trucks, or sports utility vehicles (SUVs), and in some embodiments can be two-wheel drive (2WD) (i.e., rear-wheel drive or front-wheel drive), four-wheel drive (4WD), or all-wheel drive (AWD) and / or various other types of vehicles. In some embodiments, vehicle 100 may also include motorcycles or other vehicles, such as aircraft, spacecraft, ships, etc., and / or one or more other types of mobile platforms (e.g., robots and / or other mobile platforms).

[0031] like Figure 1 As depicted, the vehicle 100 includes a body 105 mounted on a chassis 110. The body 105 substantially surrounds the other components of the vehicle 100. The body 105 and the chassis 110 may together form a frame. The vehicle 100 also includes a plurality of wheels 106 and axles 108 coupled thereto. Each wheel 106 is rotatably coupled to the chassis 110 near a corresponding corner of the body 105 to facilitate movement of the vehicle 100. In one embodiment, the vehicle 100 includes four wheels 106, although this may vary in other embodiments (e.g., for trucks and certain other vehicles).

[0032] In various embodiments, the drive system 102 is mounted on a chassis 110 and drives wheels 106 via axle 108. In the depicted embodiments, the drive system includes a propulsion system comprising an engine 112. In various embodiments, the drive system 102 includes an internal combustion engine 112 and a turbocharger 114. In various embodiments, the turbocharger 114 forces air into the engine 112, thereby generating additional power for the engine 112. Also in various embodiments, the turbocharger 114 includes a particulate filter 116 for filtering soot produced by the combustion of the engine 112 (internal combustion engine).

[0033] Reference Figure 2 Provided Figure 1 A simplified illustration of a portion of the drive system 102, including the engine 112, turbocharger 114, and particulate filter 116. (See attached diagram.) Figure 2 As depicted, in various embodiments, engine 112 includes cylinder 200 and actuator 202. In various embodiments, combustion occurs within cylinder 200, and actuator 202 is used to power vehicle 100 (e.g., including its axle 108 and wheels 106) via the power generated by combustion.

[0034] Continue to refer to Figure 2 Furthermore, according to various embodiments, the turbocharger 114 includes Figure 1 The particulate filter 116 includes an inlet 204, an outlet 206, an intake valve 212, and an exhaust valve 214. In various embodiments, the intake valve 212 controls the flow rate of intake air 208 entering the cylinder 200. Similarly, in various embodiments, the exhaust valve 214 controls the flow rate of exhaust air 210 exiting the cylinder 200. It should be understood that when air passes through... Figure 2 As the exemplary flow path 216 shown flows into and out of cylinder 200, air moves through the compressor and turbine as it enters and exits cylinder 200, respectively. Figure 2 (Not shown in the image).

[0035] In addition, such as Figure 2 As depicted, air is filtered by particulate filter 116 as it travels through flow path 216. In various embodiments, particulate filter 116 removes soot from the air produced by combustion in cylinder 200. Also in various embodiments, particulate filter 116 can be selectively regenerated, creating an overlapping state to simultaneously open intake valve 212 and exhaust valve 214, as described in more detail below.

[0036] Return to reference Figure 1 In various embodiments, the control system 104 controls the regeneration of the particulate filter 116 by providing instructions for selectively moving and controlling the inlet valve 212 and the exhaust valve 214 during scavenging in certain situations, for example, in combination as follows. Figure 3 The process 300 is described in more detail. Also in various embodiments, the control system 104 may provide various other control functions for the drive system 102 and / or for various other systems and components of the vehicle 100.

[0037] Continue to refer to Figure 1 In various embodiments, the control system 104 is coupled to the drive system 102 and includes a sensor array 120 and a controller 140.

[0038] In various embodiments, sensor array 120 includes sensors that acquire sensor data relating to and for controlling drive system 102 (including the regeneration of its particulate filter 116). In the depicted embodiments, sensor array 120 includes one or more soot sensors 122 and temperature sensors 124. It should be understood that in some embodiments, sensor array 120 may also include any number of other sensors 126.

[0039] In various embodiments, the soot sensor 122 detects the presence, amount, and / or concentration of soot in the particulate filter 116. As used throughout this application, the term "sock ash" is used to refer to any particulate matter or material produced by combustion of the engine 112, including but not limited to powdery, flaky, or other carbonaceous material produced by combustion. In some embodiments, the soot sensor 122 may include one or more pressure sensors, such as differential pressure sensors. However, this may vary in other embodiments, and one or more other sensors may be used in some embodiments.

[0040] In various embodiments, temperature sensor 124 is configured to measure the air temperature of one or more portions of the air in the drive system 102. In various embodiments, temperature sensor 124 is used to measure... Figure 2 The temperature of exhaust gas 210 as it exits turbocharger 114 via outlet 206.

[0041] In some embodiments, the sensor array 120 may also include one or more additional types of sensors 126, such as one or more engine torque sensors as an example, and other different possible types of sensors.

[0042] In various embodiments, controller 140 is coupled to sensor array 120. In various embodiments, controller 140 is also coupled to drive system 102, including its turbocharger 114. In various embodiments, controller 140 may also be coupled to one or more other systems and / or components of vehicle 100.

[0043] like Figure 1 As depicted, in various embodiments, controller 140 includes a computer system (also referred to herein as computer system 140) and includes a processor 142, memory 144, interface 146, storage device 148, and computer bus 150. In various embodiments, controller (or computer system) 140 controls the regeneration filtration of particulate filter 116. In various embodiments, controller 140 controls various other functions of vehicle 100, including various other functions of vehicle 100's movement and drive system 102, and various other vehicle systems and components. In various embodiments, controller 140 according to... Figure 3The process involves 300 steps and provides these and other functions as described below in conjunction with its further description.

[0044] In various embodiments, the controller 140 (and in some embodiments, the control system 104 itself) is housed within the body 105 of the vehicle 100. In one embodiment, the control system 104 is mounted on the chassis 110. In some embodiments, the controller 140 and / or the control system 104 and / or one or more components thereof may be located outside the body 105, for example, on a remote server, in the cloud, or on other devices that remotely perform image processing.

[0045] It should be understood that controller 140 may be different Figure 1 The illustrated embodiments. For example, controller 140 may be coupled to one or more remote computer systems and / or other control systems, or may utilize one or more remote computer systems and / or other control systems, for example as part of one or more of the aforementioned vehicle 100 equipment and systems.

[0046] In the depicted embodiment, the computer system of controller 140 includes processor 142, memory 144, interface 146, storage device 148, and bus 150. Processor 142 performs the computational and control functions of controller 140 and may include any type of processor or multiple processors, a single integrated circuit such as a microprocessor, or any suitable number of integrated circuit devices and / or circuit boards that cooperate to perform the functions of a processing unit. During operation, processor 142 executes one or more programs 152 contained in memory 144 and thus controls the general operation of controller 140 and the computer system of controller 140, typically in performing the processes described herein, such as... Figure 3 The process 300, and further described below.

[0047] Memory 144 can be any suitable type of memory. For example, memory 144 can include various types of dynamic random access memory (DRAM), such as SDRAM, various types of static RAM (SRAM), and various types of non-volatile memory (PROM, EPROM, and flash memory). In some examples, memory 144 is located on and / or co-located on the same computer chip as processor 142. In the depicted embodiment, memory 144 stores the above-described program 152 and one or more stored values ​​156 (e.g., a threshold for controlling particulate filter regeneration).

[0048] Bus 150 is used to transmit programs, data, status, and other information or signals between various components of the computer system of controller 140. Interface 146 allows communication, for example, from system drives and / or another computer system to the computer system of controller 140, and can be implemented using any suitable methods and means. In one embodiment, interface 146 obtains various data from sensor array 120. Interface 146 may include one or more network interfaces for communicating with other systems or components. Interface 146 may also include one or more network interfaces for communicating with technicians, and / or one or more storage interfaces for connecting to storage devices, such as storage device 148.

[0049] Storage device 148 can be any suitable type of storage device, including various types of direct access storage and / or other memory devices. In one exemplary embodiment, storage device 148 includes a program product from which memory 144 can receive execution. Figure 3 The process 300 is one or more embodiments of the program 152, and is further described below in conjunction with it. In another exemplary embodiment, the program product may be directly stored in and / or accessed by memory 144 and / or disk (e.g., disk 157), as referenced below.

[0050] Bus 150 can be any suitable physical or logical component for connecting computer systems and components. This includes, but is not limited to, direct hardwired connections, fiber optic, infrared, and wireless bus technologies. During operation, program 152 is stored in memory 144 and executed by processor 142.

[0051] It will be understood that although this exemplary embodiment has been described in the context of a full-featured computer system, those skilled in the art will recognize that the mechanisms of this disclosure can be distributed as a program product having one or more types of non-transitory computer-readable signal-bearing media for storing a program and its instructions and performing its distribution, such as a non-transitory computer-readable medium carrying a program and containing computer instructions stored therein for causing a computer processor (such as processor 142) to execute and run the program. Such program products can take various forms, and this disclosure applies equally regardless of the specific type of computer-readable signal-bearing medium used to perform the distribution. Examples of signal-bearing media include recordable media such as floppy disks, hard disk drives, memory cards, and optical disks, and transmission media such as digital and analog communication links. It will be understood that cloud-based storage and / or other technologies may also be utilized in some embodiments. Similarly, it should be understood that the computer system of controller 140 may also differ in other ways. Figure 1In the embodiments depicted herein, for example, the computer system of controller 140 may be connected to or may otherwise utilize one or more remote computer systems and / or other control systems.

[0052] refer to Figure 3 A flowchart of a process 300 for regenerating a particulate filter using scavenging air according to an exemplary embodiment is provided. In various embodiments, process 300 may be combined with Figure 1 100 vehicles (including) Figure 1 and Figure 2 Drive system 102, Figure 1 The control system 104 and its components are implemented.

[0053] like Figure 3 As depicted, process 300 begins at step 302. In one embodiment, process 300 begins when the vehicle driving or ignition cycle begins, such as when the driver or other user approaches or enters the vehicle 100, when the driver or other user activates the vehicle and / or its ignition device (e.g., by turning a key, engaging a remote key, or pressing a start button), or when the vehicle begins operation. In one embodiment, the steps of process 300 are performed continuously during vehicle operation.

[0054] In various embodiments, sensor data is obtained (step 304). In various embodiments, for Figure 1 and Figure 2 The sensor data is obtained through the operation of the drive system 102. In various embodiments, the sensor data is transmitted via... Figure 1 The sensor array 120 acquires sensor data and provides it to the sensor array 120. Figure 1 The processor 142 performs the processing.

[0055] Specifically, in various embodiments, the sensor data in step 304 includes information about... Figure 1 and Figure 2 The soot detection data refers to the presence and amount of soot (e.g., its estimated volume, mass, and / or percentage concentration) in the particulate filter 116. In various embodiments, the soot data is obtained via... Figure 1 The ash is obtained by one or more ash sensors 122 (such as via one or more differential pressure sensors and / or one or more other types of ash detection sensors) and provided to Figure 1 The processor 142 performs the processing.

[0056] Similarly, in various embodiments, the sensor data in step 304 also includes information about the direction along... Figure 2 Temperature data of one or more temperatures of the air flowing through flow path 216. In various embodiments, the temperature data includes... Figure 2The temperature of exhaust gas 210 as it exits turbocharger 114 via outlet 206, such as via Figure 1 One or more temperature sensors 124 measure and provide the temperature data. Figure 1 The processor 142 performs the processing.

[0057] In various embodiments, the sensor data (including soot data and temperature data) from step 304 are continuously collected and utilized throughout process 300.

[0058] Similarly, in various embodiments, the particulate filter regeneration is requested (step 306). In various embodiments, when Figure 1 and Figure 2 When the soot concentration in particulate filter 116 exceeds a predetermined threshold (e.g., stored in memory 144 as its stored value 156), or in other words, when particulate filter regeneration is required, according to... Figure 1 The processor 142 provides instructions to request the regeneration of the particulate filter.

[0059] In various embodiments, once a request (e.g., a need for) particulate filter regeneration is determined, it is determined whether scavenging air is available (step 308). In some embodiments, Figure 1 The processor 142 is based at least in part on the sensor data from step 304 and Figure 1 and Figure 2 The determination is made based on the current operating state of the drive system 102. In some embodiments, this determination is made when the intake valve 212 and exhaust valve 214 are ready to selectively move as instructed by the processor 142 for scavenging, and when sufficient airflow is available. Figure 2 When the intake 208 is available for scavenging, and under other possible conditions in various embodiments, the processor 142 determines that scavenging is available.

[0060] In various embodiments, if it is determined in step 310 that scavenging gas is unavailable, conventional particulate filter regeneration is performed (step 310). Specifically, in various embodiments, during step 310, Figure 1 The processor 142 provides for heating Figure 1 and Figure 2 The instructions for the particulate filter 116. In various embodiments, the particulate filter 116 is heated to a predetermined temperature (e.g., stored as its stored value 156). Figure 1The particulate filter 116 is regenerated (e.g., by burning off soot from the particulate filter 116) in a memory 144. In various embodiments, scavenging is not performed as part of the regeneration during step 310, and the intake valve 212 and exhaust valve 214 are not commanded to a new position. In some embodiments, both the intake valve 212 and exhaust valve 214 remain closed during step 310.

[0061] In various embodiments, after step 310, process 300 terminates (step 320). Specifically, in various embodiments, during step 320, process 300 is based on... Figure 1 Instructions provided by processor 142 are delivered via an exit function (e.g., stored in...). Figure 1 (Terminated in memory 144).

[0062] Instead, referring back to step 310 in the various embodiments, if in step 310 it is determined that scavenging is available, then the scavenging intensity is increased (step 312). As used throughout this application, scavenging intensity (or "SI") refers to the intensity determined by... Figure 1 The processor 142 provides instructions to the drive system 102 to determine the magnitude of the scavenging. In various embodiments, when Figure 2 When both intake valve 212 and exhaust valve 214 remain open (according to instructions provided by processor 142), scavenging is performed, thus... Figure 2 The intake of the 208 and Figure 2 The exhaust gas 210 mixture.

[0063] In various embodiments, the scavenging intensity (or "SI") specifically refers to the extent to which the intake valve 212 and the exhaust valve 214 are simultaneously open (i.e., the extent of valve overlap between the intake valve 212 and the exhaust valve 214, during which both valves remain open), thereby also affecting the extent of mixing of the intake air 208 and the exhaust air 210. In some embodiments, the change in scavenging amplitude corresponding to the change in scavenging intensity ("SI") is achieved by adjusting the amount of time that the intake valve 212 and the exhaust valve 214 remain open simultaneously (i.e., by adjusting the duration of valve overlap).

[0064] In some embodiments, the scavenging intensity (“SI”) value may reflect the percentage of the maximum permissible scavenging capacity of the drive system 102 of the vehicle 100 (e.g., as stored as one of its stored values ​​156 in...). Figure 1 (in memory 144). For example, in some embodiments, a scavenging value "0" means no scavenging; while a scavenging value "1" indicates maximum scavenging; and a scavenging value "0.1" indicates ten percent (10%) of the maximum scavenging, etc.

[0065] Furthermore, in some embodiments, during step 312, the scavenging intensity (“SI”) value increases by 0.1, which means the increase in scavenging intensity is equal to ten percent (10%) of the maximum scavenging. However, in other embodiments, this amount can vary. Also in various embodiments, according to… Figure 1 The processor 142 provides instructions to selectively open the particulate filter 116 when it is heated for regeneration. Figure 2 The intake valve 212 and exhaust valve 214 are used in sufficient quantity (and / or for sufficient duration) to achieve the desired increase in scavenging intensity (SI) value, thereby achieving the increase in scavenging intensity (SI) during step 312.

[0066] In various embodiments, during step 312, scavenging and particulate filter regeneration are performed using the increased scavenging intensity (SI) of step 312 (including selectively opening intake valve 212 and exhaust valve 214 while heating particulate filter 116). In various embodiments, particulate filter 116 is regenerated due to the increased temperature, and soot load is reduced while scavenging is performed. Specifically, in various embodiments, when exhaust valve 214 is closed, fresh air has already been transferred from the intake to the exhaust for scavenging, and the air-fuel ratio in cylinder 200 is relatively high during scavenging (e.g., air increases depending on fuel). Therefore, in various embodiments, during the exhaust event, excess fuel will react with the fresh air transferred to the exhaust during scavenging, and the exothermic reaction will increase the exhaust temperature and promote particulate filter regeneration.

[0067] In various embodiments, after step 312, it is determined whether the exhaust temperature has exceeded a predetermined value (step 314). In various embodiments, this is based on sensor data measured via step 304. Figure 2 This determination is made based on the temperature value of the exhaust gas 210. In various embodiments, by Figure 1 The processor 142 determines whether the exhaust gas 210 exceeds a predetermined target temperature stored in memory 144 as one of its stored values ​​156. In some embodiments, the target temperature includes the maximum temperature of scavenging air for a particular drive system 102 and vehicle 100.

[0068] In various embodiments, if it is determined in step 314 that the temperature (e.g., the temperature of exhaust gas 210) does not exceed a predetermined value (e.g., a target temperature), the process returns to step 308. In various embodiments, steps 308-314 are subsequently repeated in new iterations (e.g., particulate filter regeneration and scavenging continue using updated sensor data, and the scavenging intensity (SI) is further increased as needed in the new iteration of step 312) until it is determined during the iteration of step 314 that the exhaust gas temperature has exceeded a predetermined threshold.

[0069] In various embodiments, once it is determined during the iteration of step 314 that the temperature (e.g., the temperature of exhaust gas 210) has exceeded a predetermined value, the process proceeds to step 316. In various embodiments, during step 316, it is determined whether regeneration has been completed. Specifically, in various embodiments, during step 316, it is determined whether the current soot concentration in particulate filter 116 is now less than a predetermined threshold (e.g., this threshold is stored in memory 144 as its stored value 156). In some embodiments, this determination is made by processor 142 using the sensor data (including soot data) from step 304. Also in some embodiments, the same threshold for soot concentration from step 306 is used for the threshold during step 316; however, this may vary in some other embodiments.

[0070] In various embodiments, if it is determined in step 316 that regeneration has not yet been completed, the process returns to step 314. In various embodiments, as a new iteration of steps 308-314 is performed, regeneration of the particulate filter 116 continues to be performed using scavenging air (as described above) until it is determined during the iteration in step 316 that regeneration has been completed.

[0071] Conversely, in various embodiments, regeneration of the particulate filter is complete once it is determined during the iteration of step 316. Specifically, in various embodiments, the scavenging intensity (SI) is set to zero, and scavenging terminates. In various embodiments, this is based on the processor 142's shutdown... Figure 2 The intake valve 212 and exhaust valve 214 are operated by instructions provided.

[0072] In various embodiments, the process then terminates at step 320. Specifically, as described above, in various embodiments, during step 320, process 300 is based on... Figure 1 Instructions provided by processor 142 are delivered via an exit function (e.g., stored in...). Figure 1 (Terminated in memory 144).

[0073] Therefore, methods, systems, and vehicles for controlling the regeneration of particulate filter 116 are provided. In various embodiments, as described above... Figure 3 As described in process 300, scavenging is performed during particulate filter regeneration as particulate filter 116 is heated. Specifically, in various embodiments, intake valve 212 and exhaust valve 214 are opened simultaneously during particulate filter regeneration (when particulate filter 116 is heated). As a result, excess fuel reacts with fresh air in the exhaust. As mentioned above, if the exhaust temperature does not reach a sufficient target temperature threshold, the scavenging intensity (SI) is increased as part of process 300, thereby increasing scavenging and air richness.

[0074] In various embodiments, the particulate filter 116 is regenerated due to increased temperature, and soot load is reduced while scavenging is performed. Specifically, in various embodiments, when exhaust valve 214 is closed, fresh air has already been transferred from the intake to the exhaust for scavenging, and the air-fuel ratio in cylinder 200 is relatively high during scavenging (e.g., air increases depending on fuel). Therefore, in various embodiments, during the exhaust event, excess fuel will react with the fresh air transferred to the exhaust during scavenging, and the exothermic reaction will increase the exhaust temperature. In various embodiments, the increased exhaust temperature will promote particulate filter regeneration while maintaining optimized engine torque. Also in various embodiments, scavenging is performed until the soot concentration is low enough that further regeneration is not required.

[0075] In various embodiments, the technologies disclosed herein (including) Figure 3 The process 300 (including its steps and functions, and as described above) provides expanded conditions for performing scavenging and particulate filter regeneration. In various embodiments, this can result in cleaner exhaust air and / or other performance improvements to the drive system 102 and / or the vehicle 100.

[0076] It should be understood that the systems, vehicles, and methods may differ from those depicted in the accompanying drawings and described herein. For example, Figure 1 100 vehicles Figure 1 and Figure 2 Drive system 102, Figure 1 The control system 104 and / or its components can be connected with Figure 1 The differences described herein. Similarly, it should be understood that the steps of process 300 can be compared with those described in the original text. Figure 3 The steps described may differ, and / or the various steps of process 300 may occur simultaneously and / or be related to... Figure 3 The different sequences shown occur.

[0077] While at least one exemplary embodiment has been presented in the foregoing detailed description, it should be understood that numerous variations exist. It should also be understood that the one or more exemplary embodiments are merely examples and are not intended to limit the scope, applicability, or configuration of this disclosure in any way. Rather, the foregoing detailed description will provide those skilled in the art with a convenient roadmap for implementing one or more exemplary embodiments. It should be understood that various changes may be made to the function and arrangement of the elements without departing from the scope of this disclosure as set forth in the appended claims and their legal equivalents.

Claims

1. A method for regenerating a particulate filter in a particulate filter of a drive system for controlling a vehicle, the drive system having an intake valve and an exhaust valve, the method comprising: Sensor data relating to the drive system is obtained via one or more sensors of the vehicle, including temperature sensor data relating to the exhaust temperature of the drive system; The processor of the vehicle uses the sensor data to determine when particulate filter regeneration is needed; as well as When it is determined that particulate filter regeneration is required, particulate filter regeneration is provided simultaneously with scavenging of the drive system via instructions provided by the processor, wherein if the exhaust temperature is below a predetermined threshold, the scavenging is performed by simultaneously opening the intake valve and the exhaust valve for a varying predetermined time period, the varying predetermined time period iteratively increasing over time during the operation of the drive system, and wherein once the exhaust temperature is above the predetermined threshold, the scavenging continues without further iteratively increasing the varying predetermined time period until particulate filter regeneration is no longer required.

2. The method according to claim 1, wherein: The step of obtaining the sensor data further includes obtaining soot data about the soot concentration in the particulate filter via one or more soot sensors of the vehicle; The step of determining when the particulate filter needs regeneration includes, via the processor, determining that particulate filter regeneration is required when the soot concentration in the particulate filter exceeds a predetermined threshold; and The step of providing the particulate filter regeneration includes providing the particulate filter regeneration while performing the scavenging for the drive system, via instructions provided by the processor, when the soot concentration in the particulate filter exceeds the predetermined threshold.

3. The method according to claim 2, wherein: The method further includes increasing the intensity of the scavenging air while performing the particulate filter regeneration if the exhaust temperature is below a predetermined threshold.

4. The method according to claim 3, further comprising: When the soot concentration in the particulate filter is less than the predetermined threshold, the regeneration of the particulate filter and the scavenging of the drive system are terminated via the instruction provided by the processor.

5. The method of claim 1, wherein the particulate filter regeneration and scavenging are performed for the turbocharger of the drive system.

6. The method of claim 5, wherein the scavenging is performed according to the instructions provided by the processor by opening the intake valve and the exhaust valve together, thereby generating a valve overlap between the intake valve and the exhaust valve for a predetermined amount of time while heating the particulate filter.

7. A vehicle, comprising: main body; A drive system configured to generate movement of the body, the drive system including a particulate filter, the drive system having an intake valve and an exhaust valve; One or more sensors are configured to acquire sensor data related to the drive system, the one or more sensors including one or more temperature sensors configured to acquire temperature sensor data about the exhaust temperature of the drive system; and A processor, coupled to the one or more sensors, is configured to at least facilitate: The sensor data was used to determine that particulate filter regeneration was required. as well as When it is determined that particulate filter regeneration is required, particulate filter regeneration is provided simultaneously with scavenging of the drive system via instructions provided by the processor, wherein if the exhaust temperature is below a predetermined threshold, the scavenging is performed by simultaneously opening the intake valve and the exhaust valve for a varying predetermined time period, the varying predetermined time period iteratively increasing over time during the operation of the drive system, and wherein once the exhaust temperature is above the predetermined threshold, the scavenging continues without further iteratively increasing the varying predetermined time period until particulate filter regeneration is no longer required.

8. The vehicle according to claim 7, wherein: The one or more sensors also include one or more soot sensors configured to obtain soot data regarding the soot concentration in the particulate filter; and The processor is also configured to at least facilitate: When the soot concentration in the particulate filter exceeds a predetermined threshold, it is determined that the particulate filter needs to be regenerated. When the soot concentration in the particulate filter exceeds the predetermined threshold, the particulate filter is regenerated while the scavenging for the drive system is performed via instructions provided by the processor. as well as When the soot concentration in the particulate filter is less than the predetermined threshold, the regeneration of the particulate filter and the scavenging of the drive system are terminated via the instruction provided by the processor.

9. The vehicle according to claim 8, wherein: The processor is also configured to at least facilitate increasing the intensity of the scavenging air while performing the particulate filter regeneration if the exhaust temperature is below a predetermined threshold.

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