Diesel particulate filter regeneration method, device and equipment and engine

Abstract

The embodiment of the invention provides a diesel particulate filter regeneration method, device and equipment and an engine. The method comprises the steps that firstly, in response to a DPF regeneration request of a vehicle, the power output mode state of the vehicle is obtained; then, if the power output mode state is an on state, the vehicle is controlled to conduct DPF regeneration according to a first regeneration strategy; and finally, if the power output mode state is the closed state, the vehicle is controlled to conduct DPF regeneration according to a second regeneration strategy. In this way, DPF regeneration can be efficiently conducted on the engineering vehicle in different working modes, and fuel economy is improved.

Description

Technical Field

[0001] The present application relates to the field of automobile engines, and in particular to a diesel particulate filter regeneration method, device, equipment and engine. Background Art

[0002] In order to improve air quality, modern diesel power systems are generally equipped with diesel particulate filters (DPF) to control the emission of solid particulate pollutants. However, as the DPF continues to operate, the dust capacity of the filter element will gradually become saturated due to soot deposition, causing an abnormal increase in the pressure gradient of the exhaust system, so the DPF needs to be regenerated regularly to ensure the normal operation of the vehicle.

[0003] In the prior art, the DPF regeneration strategy is usually to enter the DPF regeneration mode immediately after the vehicle's DPF carbon load reaches the limit, by changing the current vehicle engine combustion parameters, increasing the exhaust temperature to burn it, and restoring the DPF's filtering capacity.

[0004] However, the DPF regeneration strategy in the prior art has poor regeneration effect, which affects vehicle performance and fuel economy. Summary of the invention

[0005] The embodiments of the present application provide a diesel particulate filter regeneration method, device, equipment and engine to solve the problem that the DPF regeneration strategy in the prior art has poor regeneration effect and affects vehicle performance and fuel economy.

[0006] In a first aspect, an embodiment of the present application provides a diesel particulate filter regeneration method, comprising:

[0007] In response to a DPF regeneration request of the vehicle, obtaining a power output mode state of the vehicle;

[0008] If the power output mode state is in the on state, controlling the vehicle to perform DPF regeneration according to a first regeneration strategy;

[0009] If the power output mode state is the off state, the vehicle is controlled to perform DPF regeneration according to a second regeneration strategy, and the parameters in the second regeneration strategy are different in size from the parameters in the first regeneration strategy.

[0010] In a possible implementation manner, obtaining the power output mode state of the vehicle includes:

[0011] Obtain output signals of vehicle sensors from a controller area network bus;

[0012] A power output mode state of the vehicle is determined based on the output signal.

[0013] In a possible implementation manner, the first regeneration strategy and / or the second regeneration strategy includes at least one of the following: a closing degree of an intake throttle valve, a fuel injection angle, a fuel injection pressure, and a post-injection amount.

[0014] In one possible implementation, the closing degree of the intake throttle valve in the first regeneration strategy is smaller than the closing degree of the intake throttle valve in the second regeneration strategy; the fuel injection angle in the first regeneration strategy is smaller than the fuel injection angle in the second regeneration strategy; the fuel injection pressure in the first regeneration strategy is smaller than the fuel injection pressure in the second regeneration strategy; and the post-injection amount in the first regeneration strategy is larger than the post-injection amount in the second regeneration strategy.

[0015] In a possible implementation manner, before responding to the DPF regeneration request of the vehicle, the method further includes:

[0016] Obtaining operating parameters and DPF monitoring indicators of the vehicle;

[0017] If it is determined that the operating parameters of the vehicle and the DPF monitoring index meet the preset values, a DPF regeneration request for the vehicle is sent.

[0018] In a possible implementation manner, the operating parameter includes at least one of the following: engine speed, real-time vehicle speed, exhaust temperature, coolant temperature, and gear position;

[0019] The DPF monitoring index includes at least one of the following: real-time carbon load of the DPF, current DPF working time, and current DPF mileage.

[0020] In a possible implementation, the method further includes:

[0021] If it is determined that the operating parameter does not meet the preset value, and the DPF monitoring index meets the preset value, a reminder message is output, and the reminder message is used to remind the driver to adjust the operating parameter to the preset value as soon as possible.

[0022] In a second aspect, an embodiment of the present application provides a diesel particulate filter regeneration device, comprising:

[0023] an acquisition module, configured to acquire a power output mode state of the vehicle in response to a DPF regeneration request of the vehicle;

[0024] A first control module, configured to control the vehicle to perform DPF regeneration according to a first regeneration strategy if the power output mode state is in an on state;

[0025] The second control module is used to control the vehicle to perform DPF regeneration according to a second regeneration strategy if the power output mode state is an off state, and the parameters in the second regeneration strategy are different in size from the parameters in the first regeneration strategy.

[0026] In a possible implementation manner, the acquisition module is specifically configured to:

[0027] Obtain output signals of vehicle sensors from a controller area network bus;

[0028] A power output mode state of the vehicle is determined based on the output signal.

[0029] In a possible implementation manner, the first regeneration strategy and / or the second regeneration strategy includes at least one of the following: a closing degree of an intake throttle valve, a fuel injection angle, a fuel injection pressure, and a post-injection amount.

[0030] In one possible implementation, the closing degree of the intake throttle valve in the first regeneration strategy is smaller than the closing degree of the intake throttle valve in the second regeneration strategy; the fuel injection angle in the first regeneration strategy is smaller than the fuel injection angle in the second regeneration strategy; the fuel injection pressure in the first regeneration strategy is smaller than the fuel injection pressure in the second regeneration strategy; and the post-injection amount in the first regeneration strategy is larger than the post-injection amount in the second regeneration strategy.

[0031] In a possible implementation manner, the device further includes a processing module, and before responding to the DPF regeneration request of the vehicle, the processing module is configured to:

[0032] Obtaining operating parameters and DPF monitoring indicators of the vehicle;

[0033] If it is determined that the operating parameters of the vehicle and the DPF monitoring index meet the preset values, a DPF regeneration request for the vehicle is sent.

[0034] In a possible implementation manner, the operating parameter includes at least one of the following: engine speed, real-time vehicle speed, exhaust temperature, coolant temperature, and gear position;

[0035] The DPF monitoring index includes at least one of the following: real-time carbon load of the DPF, current DPF working time, and current DPF mileage.

[0036] In a possible implementation manner, the processing module is further used to:

[0037] If it is determined that the operating parameter does not meet the preset value, and the DPF monitoring index meets the preset value, a reminder message is output, and the reminder message is used to remind the driver to adjust the operating parameter to the preset value as soon as possible.

[0038] In a third aspect, an embodiment of the present application provides an electronic device, including: a memory, a processor;

[0039] The memory stores computer-executable instructions;

[0040] The processor executes the computer-executable instructions stored in the memory, so that the processor executes the above first aspect and / or various possible implementations of the first aspect.

[0041] In a fourth aspect, an embodiment of the present application provides an engine, which is used to implement the above first aspect and / or various possible implementation methods of the first aspect.

[0042] The diesel particulate filter regeneration method, device, equipment and engine provided in the embodiment of the present application first obtain the power output mode state of the vehicle by responding to the DPF regeneration request of the vehicle; then, if the power output mode state is in the on state, the vehicle is controlled to perform DPF regeneration according to the first regeneration strategy; finally, if the power output mode state is in the off state, the vehicle is controlled to perform DPF regeneration according to the second regeneration strategy. In this way, it is ensured that DPF regeneration will not affect the performance of the vehicle, and the engineering vehicle can efficiently perform DPF regeneration in different working modes, thereby improving fuel economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0044] Figure 1 Schematic diagram of the process of diesel particulate filter regeneration method provided in the embodiment of the present application Figure 1 ;

[0045] Figure 2 Schematic diagram of the process of diesel particulate filter regeneration method provided in the embodiment of the present application Figure 2 ;

[0046] Figure 3 A schematic diagram of the structure of a diesel particulate filter regeneration device provided in an embodiment of the present application;

[0047] Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0048] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0049] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0050] In order to improve air quality, modern diesel power systems are generally equipped with a Diesel Particulate Filter (DPF) to control the emission of solid particulate pollutants. However, as the DPF continues to operate, the dust capacity of the filter element will gradually become saturated due to soot deposition, causing an abnormal increase in the pressure gradient of the exhaust system, so the DPF needs to be regenerated regularly to ensure the normal operation of the vehicle.

[0051] In the prior art, the DPF regeneration strategy is usually to enter the DPF regeneration mode immediately after the vehicle's DPF carbon load reaches the limit, by changing the current vehicle engine combustion parameters, increasing the exhaust temperature to burn it, and restoring the DPF's filtering capacity.

[0052] However, the DPF regeneration strategy in the prior art is only triggered based on the carbon load threshold, without fully considering factors such as engine operating conditions and driving modes, which may result in failure to regenerate at the appropriate time, affecting vehicle performance and fuel economy; and when the vehicle is in low-speed or short-distance conditions for a long time (such as congested urban roads), regeneration is difficult to complete effectively.

[0053] Based on this, the present application proposes a diesel particulate filter regeneration method. Since the DPF regeneration strategy in the prior art usually determines the regeneration time and method only based on the DPF carbon load and vehicle operating parameters (such as exhaust temperature, engine load, etc.). However, compared with ordinary vehicles, the working mode of engineering vehicles is more complex, and they may be in specific working conditions (such as pumping, idling, etc.) for a long time. The existing DPF regeneration strategy may cause engine power limitation or poor regeneration effect in a single mode, so it is necessary to optimize the regeneration strategy for different working conditions. Since the electronic control unit (ECU) can monitor the power output mode state (Power Take-Off, PTO) in real time to determine the current working mode (such as pumping, driving, etc.), the DPF regeneration strategy can be adjusted according to different modes to improve the regeneration effect, reduce fuel consumption, and reduce the impact on vehicle operations.

[0054] The following uses specific embodiments to elaborate in detail on the technical solution of this application and how the technical solution of this application solves the above technical problems. These several specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of this application will be described below in conjunction with the accompanying drawings.

[0055] Figure 1 Flow schematic of the diesel particulate filter regeneration method provided for the embodiments of this application Figure 1 ; As Figure 1 shown, this method includes:

[0056] S101. In response to a DPF regeneration request of the vehicle, obtain the power output mode state of the vehicle.

[0057] It should be understood that before the vehicle performs DPF regeneration, it is necessary to judge the current power output mode in order to match a suitable DPF regeneration strategy.

[0058] In one realizable manner, first, obtain the output signal of the vehicle sensor from the controller area network bus; then determine the power output mode state of the vehicle according to the output signal.

[0059] It can be understood that the vehicle control unit obtains the output signal of the vehicle sensor (such as the power take-off state sensor) through the controller area network bus to form a message, and sends the message to the ECU through the controller area network bus. Finally, the ECU judges the power output mode state of the vehicle by decrypting the message, that is, whether the vehicle is in the working mode or the driving mode.

[0060] It should be noted that the vehicle sensor in this embodiment can be a power take-off state sensor, or a throttle position sensor, an engine speed sensor, a torque sensor, etc. The specific type of sensor can be determined according to the actual situation, and this application does not make specific limitations here.

[0061] S102. If the power output mode state is the on state, control the vehicle to perform DPF regeneration according to the first regeneration strategy.

[0062] It can be understood that when it is judged that the power output mode state is the on state, it means that the vehicle is in the working mode at this time. For example, the pump truck is in the pumping mode and the crane is in the hoisting mode. At this time, it is necessary for the vehicle to perform DPF regeneration according to the first regeneration strategy to ensure reducing the problems of vehicle speed drop and insufficient output torque, improving the DPF regeneration efficiency while reducing the impact on vehicle performance.

[0063] S103. If the power output mode state is the off state, control the vehicle to perform DPF regeneration according to the second regeneration strategy.

[0064] The parameters in the second regeneration strategy are different from those in the first regeneration strategy. The first regeneration strategy and / or the second regeneration strategy include at least one of the following: the closing degree of the intake throttle valve, the fuel injection angle, the fuel injection pressure, and the post-injection amount. The post-injection amount refers to the control of the injection amount according to the engine's operating state and driving conditions after the engine is started.

[0065] It should be noted that the closing degree of the intake throttle valve in the first regeneration strategy is smaller than that in the second regeneration strategy; the fuel injection angle in the first regeneration strategy is smaller than that in the second regeneration strategy; the fuel injection pressure in the first regeneration strategy is smaller than that in the second regeneration strategy; and the post-injection amount in the first regeneration strategy is greater than the post-injection amount in the second regeneration strategy.

[0066] It should be understood that when it is determined that the power output mode is in the on state, it means that the vehicle is in the driving mode. At this time, the engine load changes greatly. Adjusting the torque output according to the road conditions (climbing, high speed, low speed) will make the DPF regeneration temperature insufficient, resulting in incomplete or frequent DPF regeneration.

[0067] Therefore, for the two different working modes, the embodiment of the present application adopts the first regeneration strategy when the vehicle is in the pumping mode. Specifically, the closing degree of the intake throttle valve is reduced to maintain the engine intake volume, reduce the engine torque fluctuation, and prevent the speed from dropping; then the oil injection angle is delayed to increase the exhaust temperature and compensate for the exhaust temperature loss caused by the increase in intake volume; further, the fuel injection pressure can be reduced, the combustion rate can be reduced, the engine torque fluctuation can be reduced, and the operation stability can be ensured; finally, the post-injection amount can be increased to increase the exhaust temperature and ensure the complete combustion of DPF carbon deposits.

[0068] Correspondingly, in the embodiment of the present application, when the vehicle is in driving mode, a second regeneration strategy is adopted, which specifically accelerates DPF regeneration by increasing the closing degree of the intake throttle valve, reducing the intake volume, increasing the exhaust temperature, and then advancing the oil injection angle to reduce fuel consumption while ensuring a higher exhaust temperature; further, the fuel injection pressure can be increased to enhance fuel atomization, improve combustion efficiency, ensure regeneration temperature, and reduce fuel consumption; finally, the post-injection amount can be increased to reduce the oil dilution problem, reduce fuel consumption, and reduce additional combustion load.

[0069] It can be understood that, through the above two different DPF regeneration strategies, both DPF regeneration efficiency and vehicle power performance are taken into account, effectively improving the vehicle's operating stability and fuel economy.

[0070] The diesel particulate filter regeneration method, device, equipment and engine provided in the embodiment of the present application first obtain the power output mode state of the vehicle by responding to the DPF regeneration request of the vehicle; then, if the power output mode state is in the on state, the vehicle is controlled to perform DPF regeneration according to the first regeneration strategy; finally, if the power output mode state is in the off state, the vehicle is controlled to perform DPF regeneration according to the second regeneration strategy. In this way, it is ensured that DPF regeneration will not affect the performance of the vehicle, and the engineering vehicle can efficiently perform DPF regeneration in different working modes, thereby improving fuel economy.

[0071] Figure 2 Schematic diagram of the process of diesel particulate filter regeneration method provided in the embodiment of the present application Figure 2 ;like Figure 2 As shown, in this embodiment Figure 1 Based on the embodiment, a process of generating a DPF regeneration request is described in detail, and the method includes:

[0072] S201. Obtain vehicle operating parameters and DPF monitoring indicators.

[0073] Among them, the operating parameters include at least one of the following: engine speed, real-time vehicle speed, exhaust temperature, coolant temperature and gear position; the DPF monitoring indicators include at least one of the following: real-time carbon load of DPF, current DPF working time and current DPF mileage.

[0074] It should be noted that by obtaining the engine speed, it can be ensured that the engine is in a suitable operating state to avoid low speed causing insufficient regeneration temperature or high speed affecting fuel economy; the real-time vehicle speed and gear position can assist in determining whether the vehicle is in driving mode to select a suitable DPF regeneration strategy, while preventing regeneration from being triggered at low speed or idle state, affecting exhaust temperature management; the exhaust temperature is to ensure that the exhaust temperature is high enough (usually higher than 550°C) to burn carbon deposits and ensure DPF regeneration efficiency. If the exhaust temperature is too low, the combustion strategy needs to be adjusted to increase the temperature; and the coolant temperature can ensure that the engine is within the normal operating temperature range to prevent the coolant temperature from being too low, resulting in a decrease in combustion efficiency, or too high a temperature, affecting engine life.

[0075] The real-time carbon load of the DPF can reflect the accumulation of carbon deposits (soot) or ash inside the particulate filter; the current working time of the DPF can monitor the usage of the DPF, and determine whether regeneration is needed based on the regeneration history, to prevent blockage or failure due to long-term non-regeneration; further, the current DPF mileage can also assist in determining whether the carbon load may have reached the threshold that requires regeneration, to avoid excessive carbon deposits leading to excessive back pressure and reduced engine performance.

[0076] It is understandable that by obtaining DPF monitoring indicators, it is possible to accurately determine whether the DPF has reached the regeneration threshold, avoid premature or late regeneration, and improve fuel economy; then combined with exhaust temperature, engine speed, vehicle speed and other information, it can ensure that the regeneration process is carried out under the optimal working conditions, improve DPF regeneration efficiency, and reduce regeneration time.

[0077] S202: If it is determined that the operating parameters of the vehicle and the DPF monitoring indexes meet the preset values, a DPF regeneration request of the vehicle is sent.

[0078] In one achievable manner, if it is determined that the operating parameter does not meet the preset value, and the DPF monitoring index meets the preset value, a reminder message is output, and the reminder message is used to remind the driver to adjust the operating parameter to the preset value as soon as possible.

[0079] Optionally, if the operating parameters do not meet the preset values ​​and the DPF monitoring indicators meet the preset values, corresponding reminders can be output for different operating parameters. For example, if the real-time speed of the vehicle does not meet the threshold, it will output "DPF carbon deposits are too high, please drive to an appropriate speed (≥X kilometers / hour) as soon as possible to complete DPF regeneration"; for another example, if the engine speed of the vehicle does not meet the threshold, it will output "Please increase the engine speed to above X RPM to trigger DPF regeneration."

[0080] It is understandable that by outputting reminder information and guiding the driver to take correct operations, the driver can understand the DPF status more intuitively, prevent DPF blockage and excessive exhaust back pressure caused by long-term non-regeneration, affecting engine performance, and at the same time avoid additional fuel consumption caused by invalid regeneration, reducing the cost of DPF replacement or cleaning.

[0081] Figure 3 A schematic diagram of the structure of a diesel particulate filter regeneration device provided in an embodiment of the present application; Figure 3 As shown, the diesel particulate filter regeneration device 30 includes:

[0082] An acquisition module 301 is used to acquire a power output mode state of the vehicle in response to a DPF regeneration request of the vehicle;

[0083] A first control module 302, configured to control the vehicle to perform DPF regeneration according to a first regeneration strategy if the power output mode state is in an on state;

[0084] The second control module 303 is used to control the vehicle to perform DPF regeneration according to a second regeneration strategy if the power output mode is in an off state, and the parameters in the second regeneration strategy are different from those in the first regeneration strategy.

[0085] In a possible implementation, the acquisition module 301 is specifically configured to:

[0086] Obtain output signals of vehicle sensors from a controller area network bus;

[0087] A power output mode state of the vehicle is determined based on the output signal.

[0088] In a possible implementation manner, the first regeneration strategy and / or the second regeneration strategy includes at least one of the following: a closing degree of an intake throttle valve, a fuel injection angle, a fuel injection pressure, and a post-injection amount.

[0089] In one possible implementation, the closing degree of the intake throttle valve in the first regeneration strategy is smaller than the closing degree of the intake throttle valve in the second regeneration strategy; the fuel injection angle in the first regeneration strategy is smaller than the fuel injection angle in the second regeneration strategy; the fuel injection pressure in the first regeneration strategy is smaller than the fuel injection pressure in the second regeneration strategy; and the post-injection amount in the first regeneration strategy is greater than the post-injection amount in the second regeneration strategy.

[0090] In a possible implementation, the device further includes a processing module, and before responding to the DPF regeneration request of the vehicle, the processing module is configured to:

[0091] Obtain vehicle operating parameters and DPF monitoring indicators;

[0092] If it is determined that the operating parameters of the vehicle and the DPF monitoring indicators meet the preset values, a DPF regeneration request for the vehicle is sent.

[0093] In a possible implementation, the operating parameter includes at least one of the following: engine speed, real-time vehicle speed, exhaust temperature, coolant temperature, and gear position;

[0094] The DPF monitoring indicators include at least one of the following: real-time carbon load of the DPF, current DPF working hours, and current DPF mileage.

[0095] In a possible implementation manner, the processing module is further configured to:

[0096] If it is determined that the operating parameters do not meet the preset values, and the DPF monitoring indicators meet the preset values, a reminder message is output, and the reminder message is used to remind the driver to adjust the operating parameters to the preset values ​​as soon as possible.

[0097] The diesel particulate filter regeneration device provided in the embodiment of the present application can execute the method provided in the above method embodiment, and its implementation principle and technical effect are similar, which will not be described in detail in this embodiment.

[0098] Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. Figure 4As shown, the electronic device 40 provided in this embodiment includes: at least one processor 401 and a memory 402. Optionally, the device 40 also includes a communication component 403. The processor 401, the memory 402 and the communication component 403 are connected via a bus 404.

[0099] In a specific implementation process, at least one processor 401 executes the computer-executable instructions stored in the memory 402 , so that at least one processor 401 executes the above-mentioned diesel particulate filter regeneration method.

[0100] The specific implementation process of the processor 401 can be found in the above method embodiment, and its implementation principle and technical effect are similar, so this embodiment will not be repeated here.

[0101] In the above embodiments, it should be understood that the processor can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), etc. A general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the invention can be directly implemented as a hardware processor, or can be implemented by a combination of hardware and software modules in the processor.

[0102] The memory may include a high-speed memory (Random Access Memory, RAM), and may also include a non-volatile memory (NVM), such as at least one disk storage.

[0103] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, the bus in the drawings of this application is not limited to only one bus or one type of bus.

[0104] The present application also provides an engine that executes the above-mentioned diesel particulate filter regeneration method.

[0105] An exemplary readable storage medium is coupled to a processor so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (Application Specific Integrated Circuits, referred to as: ASIC). Of course, the processor and the readable storage medium can also exist in the device as discrete components.

[0106] The division of units is only a logical function division, and there may be other divisions in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, device or unit, which can be electrical, mechanical or other forms.

[0107] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0108] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0109] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0110] Those skilled in the art can understand that all or part of the steps of implementing the above-mentioned method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps of the above-mentioned method embodiments are executed; and the aforementioned storage medium includes: ROM, RAM, disk or optical disk and other media that can store program codes.

[0111] Finally, it should be noted that those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art not disclosed by the present invention, are not limited to the precise structure described above and shown in the drawings, and may be modified and changed in various ways without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A diesel particulate filter regeneration method, characterized in that: include: In response to a diesel particulate filter (DPF) regeneration request of the vehicle, obtaining a power output mode state of the vehicle; If the power output mode state is in the on state, controlling the vehicle to perform DPF regeneration according to a first regeneration strategy; If the power output mode state is the off state, the vehicle is controlled to perform DPF regeneration according to a second regeneration strategy, and the parameters in the second regeneration strategy are different in size from the parameters in the first regeneration strategy.

2. The method according to claim 1, characterized in that The obtaining of the power output mode state of the vehicle includes: Obtain output signals of vehicle sensors from a controller area network bus; A power output mode state of the vehicle is determined based on the output signal.

3. The method according to claim 1, characterized in that The first regeneration strategy and / or the second regeneration strategy includes at least one of the following: the closing degree of the intake throttle valve, the fuel injection angle, the fuel injection pressure and the post-injection amount.

4. The method according to claim 3, characterized in that The closing degree of the intake throttle valve in the first regeneration strategy is smaller than the closing degree of the intake throttle valve in the second regeneration strategy; the fuel injection angle in the first regeneration strategy is smaller than the fuel injection angle in the second regeneration strategy; the fuel injection pressure in the first regeneration strategy is smaller than the fuel injection pressure in the second regeneration strategy; the post-injection amount in the first regeneration strategy is larger than the post-injection amount in the second regeneration strategy.

5. The method according to any one of claims 1 to 4, characterized in that: Before responding to the DPF regeneration request of the vehicle, the method further includes: Obtaining operating parameters and DPF monitoring indicators of the vehicle; If it is determined that the operating parameters of the vehicle and the DPF monitoring index meet the preset values, a DPF regeneration request for the vehicle is sent.

6. The method according to claim 5, characterized in that The operating parameters include at least one of the following: engine speed, real-time vehicle speed, exhaust temperature, coolant temperature, and gear position; The DPF monitoring index includes at least one of the following: real-time carbon load of the DPF, current DPF working time, and current DPF mileage.

7. The method according to claim 5, characterized in that The method further comprises: If it is determined that the operating parameter does not meet the preset value, and the DPF monitoring index meets the preset value, a reminder message is output, and the reminder message is used to remind the driver to adjust the operating parameter to the preset value as soon as possible.

8. A diesel particulate filter regeneration device, characterized in that: include: an acquisition module, configured to acquire a power output mode state of the vehicle in response to a DPF regeneration request of the vehicle; A first control module, configured to control the vehicle to perform DPF regeneration according to a first regeneration strategy if the power output mode state is in an on state; The second control module is used to control the vehicle to perform DPF regeneration according to a second regeneration strategy if the power output mode state is an off state, and the parameters in the second regeneration strategy are different in size from the parameters in the first regeneration strategy.

9. An electronic device, characterized in that: include: Memory, processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory, so that the processor performs the diesel particulate filter regeneration method according to any one of claims 1 to 7.

10. An engine, characterized in that: Used to implement the diesel particulate filter regeneration method according to any one of claims 1 to 7.

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