A driving regenerative control method and related device
By determining and controlling the target engine speed, the temperature of the engine oxidation catalyst is brought to the regeneration temperature, thus solving the problem of engine performance degradation and achieving the effect of automatically removing carbon deposits from the particulate filter during driving.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WEICHAI POWER CO LTD
- Filing Date
- 2023-09-18
- Publication Date
- 2026-07-10
AI Technical Summary
In vehicles used in urban areas, the engine oxidation catalyst temperature does not reach the driving regeneration temperature, which leads to an increase in the carbon load of the particulate filter, making driving regeneration impossible and resulting in a decline in engine performance.
By obtaining the correlation between engine speed, engine power, and engine oxidation catalyst temperature, the target engine speed is determined, and the engine speed is controlled to make the engine oxidation catalyst temperature reach the regeneration temperature, thus achieving regeneration while driving.
While maintaining constant engine power and vehicle speed, the system automatically controls vehicle regeneration to remove carbon deposits from the particulate filter, thus preventing a decline in engine performance.
Smart Images
Figure CN117072335B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of vehicle regeneration control technology, and in particular to a vehicle regeneration control method and related equipment. Background Technology
[0002] Vehicles frequently used in urban areas often fail to achieve on-road regeneration because the engine's oxidation catalyst temperature cannot reach the required regeneration temperature. This leads to an increasing carbon load in the particulate filter. When the carbon load exceeds the limit for on-road regeneration, and the vehicle's operating conditions cannot meet the regeneration temperature, regeneration cannot be completed in a timely manner, resulting in a decline in engine performance. Summary of the Invention
[0003] This invention provides a vehicle regeneration control method and related equipment, which can automatically control vehicle regeneration during vehicle operation and avoid engine performance degradation.
[0004] To achieve the above objectives, the present invention provides the following technical solution:
[0005] This invention provides a vehicle regeneration control method, comprising:
[0006] If the current carbon load of the particulate filter meets the conditions for vehicle regeneration, and the engine oxidation catalyst temperature has not reached the regeneration temperature, then the current engine power is obtained.
[0007] Based on the relationship between engine speed, engine power and engine oxidation catalyst temperature, the target engine speed is determined under the condition that the engine oxidation catalyst temperature is not lower than the regeneration temperature at the current engine power.
[0008] The engine speed is controlled to the target engine speed so that the vehicle can perform driving regeneration.
[0009] Optionally, controlling the engine speed to the target engine speed to enable vehicle regeneration includes:
[0010] Control the engine speed to the target engine speed, and reacquire the engine oxidation catalyst temperature;
[0011] Determine whether the reacquired engine oxidation catalyst temperature has reached the regeneration temperature, and if it has not reached the regeneration temperature, return to the step "acquire current engine power" until the regeneration temperature is reached so that the vehicle can perform driving regeneration.
[0012] Optionally, determining the target engine speed at the current engine power level that ensures the engine oxidation catalyst temperature is not lower than the regeneration temperature, based on the correlation between engine speed, engine power, and engine oxidation catalyst temperature, includes:
[0013] Determine the target temperature for the engine oxidation catalyst; wherein the target temperature is not less than the regeneration temperature;
[0014] The target temperature is corrected based on the current temperature of the engine oxidation catalyst to obtain the corrected temperature of the engine oxidation catalyst;
[0015] Based on the correspondence between the engine speed, engine power, and engine oxidation catalyst temperature, the engine speed corresponding to the current engine power and the corrected temperature is determined, and the target engine speed is obtained.
[0016] Optionally, the step of correcting the target temperature based on the current temperature of the engine oxidation catalyst to obtain the corrected temperature of the engine oxidation catalyst includes:
[0017] Calculate the difference between the target temperature and the current temperature;
[0018] The corrected temperature of the engine oxidation catalyst is obtained by summing the difference with the target temperature.
[0019] Optionally, determining the target temperature of the engine oxidation catalyst includes:
[0020] Given that the current engine speed is the target engine speed, based on the correspondence between the engine speed, engine power, and engine oxidation catalyst temperature, the engine oxidation catalyst temperature corresponding to the target engine speed and the current engine power is determined, and the target temperature of the engine oxidation catalyst is obtained.
[0021] Optionally, controlling the engine speed to the target engine speed and re-acquiring the engine oxidation catalyst temperature includes:
[0022] The target engine speed is sent to the automatic transmission controller so that the automatic transmission controller controls the engine speed to the target engine speed.
[0023] The current engine power is sent to the engine controller so that the engine controller controls the engine power to the current engine power.
[0024] When the engine speed is the target engine speed and the engine power is the current engine power, the engine oxidation catalyst temperature is re-acquired.
[0025] Optional, also includes:
[0026] Calculate the current carbon load of the particulate filter based on the current engine speed and engine oil level;
[0027] Determine whether the current carbon load is not less than the preset value of the vehicle's regenerated carbon load;
[0028] If the current carbon load is not less than the preset value of the carbon load for vehicle regeneration, then the current carbon load of the particulate filter is determined to meet the vehicle regeneration conditions.
[0029] The present invention also provides a vehicle regeneration control system, comprising:
[0030] The engine power acquisition module is used to acquire the current engine power if the engine oxidation catalyst temperature has not reached the regeneration temperature, provided that the current carbon load of the particulate filter meets the driving regeneration conditions.
[0031] The engine speed determination module is used to determine the target engine speed under the current engine power, where the engine oxidation catalyst temperature is not lower than the regeneration temperature, based on the correspondence between engine speed, engine power and engine oxidation catalyst temperature.
[0032] The control module is used to control the engine speed to the target engine speed so that the vehicle can perform driving regeneration.
[0033] The present invention also provides a computer-readable storage medium storing a program that, when executed by a processor, implements the vehicle regeneration control method described above.
[0034] The present invention also provides an electronic device, comprising:
[0035] At least one processor, and at least one memory and bus connected to the processor;
[0036] The processor and the memory communicate with each other through the bus; the processor is used to call program instructions in the memory to execute the vehicle regeneration control method as described above.
[0037] As can be seen from the above technical solutions, this invention discloses a driving regeneration control method and related equipment. When the carbon load meets the driving regeneration conditions but the engine oxidation catalyst temperature has not reached the regeneration temperature, a target engine speed is determined based on the correspondence between engine speed, engine power, and engine oxidation catalyst temperature. At this target engine speed, on the one hand, the engine power can be kept constant, avoiding the problem of vehicle speed changes due to engine power changes during driving regeneration control, which would affect the driver's driving experience; on the other hand, the engine oxidation catalyst can meet the regeneration temperature requirements, automatically controlling driving regeneration during vehicle operation, and timely removing carbon deposits from the particulate filter, thus avoiding the problem of engine performance degradation due to excessive carbon deposits.
[0038] Of course, any product or method implementing this invention does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description
[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0040] Figure 1 A flowchart of a vehicle regeneration control method provided in an embodiment of the present invention;
[0041] Figure 2 A flowchart of another vehicle regeneration control method provided in an embodiment of the present invention;
[0042] Figure 3 This is a structural diagram of a vehicle regeneration control system provided in an embodiment of the present invention;
[0043] Figure 4 This is a structural diagram of another vehicle regeneration control system provided in an embodiment of the present invention;
[0044] Figure 5 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation
[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0046] This invention provides a vehicle regeneration control method, such as... Figure 1 As shown, the method includes:
[0047] Step 101: If the current carbon load of the particulate filter meets the driving regeneration conditions, and the engine oxidation catalyst temperature has not reached the regeneration temperature, then obtain the current engine power.
[0048] As the engine runs, a certain amount of carbon load accumulates in the particulate filter. For diesel engines, this particulate filter is called a DPF (Diesel Particulate Filter). On-road regeneration occurs when the vehicle reaches regeneration conditions during operation, automatically burning the carbon particles in the particulate filter. These regeneration conditions include the particulate filter reaching a preset carbon load value and the engine oxidation catalyst reaching its regeneration temperature. For diesel engines, this engine oxidation catalyst is called a DOC (Diesel Oxidation Catalyst).
[0049] When the current carbon load of the particulate filter meets the conditions for regeneration during vehicle operation, but the engine oxidation catalyst temperature has not reached the regeneration temperature, the vehicle cannot perform regeneration while in operation. As the vehicle continues to drive, more and more carbon deposits accumulate in the particulate filter, causing a decline in engine performance. This invention addresses the problem of engine performance degradation caused by the vehicle's inability to meet the regeneration temperature requirements during operation by implementing on-road regeneration control to ensure that the engine oxidation catalyst temperature reaches the regeneration temperature.
[0050] Optionally, prior to step 101, the vehicle regeneration control method provided by the present invention further includes:
[0051] Calculate the current carbon load of the particulate filter based on the current engine speed and engine oil level.
[0052] Determine whether the current carbon load is not less than the preset value of the vehicle's regenerated carbon load.
[0053] If the current carbon load is not less than the preset value of carbon load for vehicle regeneration, then the current carbon load of the particulate filter is determined to meet the vehicle regeneration conditions.
[0054] To determine whether the current carbon load of the particulate filter meets the conditions for vehicle regeneration, the current carbon load of the particulate filter can be calculated first, and then compared with the preset value of the carbon load for vehicle regeneration. If the current carbon load is not less than the preset value of the carbon load for vehicle regeneration, it means that the carbon load is relatively high, and at this time it is determined that the current carbon load of the particulate filter meets the conditions for vehicle regeneration.
[0055] Optionally, if the current carbon load of the particulate filter meets the conditions for regeneration while in operation, and the engine oxidation catalyst temperature reaches the regeneration temperature, the vehicle will enter the regeneration process while in operation.
[0056] Step 102: Based on the relationship between engine speed, engine power, and engine oxidation catalyst temperature, determine the target engine speed that ensures the engine oxidation catalyst temperature is not lower than the regeneration temperature under the current engine power.
[0057] The relationship between engine speed, engine power, and engine oxidation catalyst temperature can be achieved through calibration. Specifically, with a fixed engine power, different engine speeds can be adjusted to obtain the engine oxidation catalyst temperature at different engine speeds. Then, the engine power can be changed, and different engine speeds can be adjusted again at the changed engine power to obtain the corresponding engine oxidation catalyst temperature.
[0058] If the current carbon load of the particulate filter meets the conditions for regeneration during vehicle operation, the engine oxidation catalyst temperature should not be lower than the regeneration temperature in order for the vehicle to enter regeneration mode. However, the engine oxidation catalyst temperature often falls below the regeneration temperature when driving in urban areas. To increase the engine oxidation catalyst temperature, the calibrated relationship between engine speed, engine power, and engine oxidation catalyst temperature can be used to adjust the temperature by changing either engine speed or engine power. However, changing the engine power will also change the vehicle speed, affecting the driver's experience and reducing driving safety. Therefore, this invention increases the engine oxidation catalyst temperature by changing the engine speed, ensuring that at the current engine power, the target engine speed ensures that the engine oxidation catalyst temperature is not lower than the regeneration temperature, thereby achieving regeneration during vehicle operation.
[0059] Step 103: Control the engine speed to the target engine speed so that the vehicle can perform driving regeneration.
[0060] Once the target engine speed is determined, it can be sent to the automatic transmission controller, which will then control the engine speed to that target speed. At the target engine speed, if the engine oxidation catalyst temperature is not lower than the regeneration temperature, and the current carbon load of the particulate filter reaches the preset value for on-road regeneration carbon load, the vehicle can perform on-road regeneration.
[0061] Of course, to ensure that the vehicle regeneration process does not affect the driver's driving experience, it is necessary to avoid significant changes in vehicle speed, that is, to maintain a constant engine power. Specifically, the current engine power can be sent to the engine controller, so that the engine controller can control the engine power to the current engine power.
[0062] As an optional embodiment, the vehicle regeneration control method provided by the present invention, such as... Figure 2 As shown, the method includes:
[0063] Step 201: If the current carbon load of the particulate filter meets the driving regeneration conditions, and the engine oxidation catalyst temperature has not reached the regeneration temperature, then obtain the current engine power.
[0064] Step 201 and Figure 1 Step 101 shown is similar and will not be repeated here.
[0065] Step 202: Based on the relationship between engine speed, engine power, and engine oxidation catalyst temperature, determine the target engine speed that ensures the engine oxidation catalyst temperature is not lower than the regeneration temperature under the current engine power.
[0066] Step 202 and Figure 1 Step 102 shown is similar and will not be repeated here.
[0067] Step 203: Control the engine speed to the target engine speed and reacquire the engine oxidation catalyst temperature.
[0068] After controlling the engine speed to the target engine speed, the engine oxidation catalyst requires a period of time to heat up. There is a possibility that the actual temperature of the engine oxidation catalyst, as measured by the sensor, is lower than the regeneration temperature. When the actual temperature is lower than the regeneration temperature, regeneration cannot be achieved while the vehicle is in motion. Therefore, this invention, after controlling the engine speed to the target engine speed, can re-acquire the engine oxidation catalyst temperature and then determine whether the re-acquired engine oxidation catalyst temperature has reached the regeneration temperature.
[0069] As an optional implementation, controlling the engine speed to the target engine speed and re-acquiring the engine oxidation catalyst temperature includes:
[0070] The target engine speed is sent to the automatic transmission controller so that the automatic transmission controller controls the engine speed to the target engine speed.
[0071] The current engine power is sent to the engine controller so that the engine controller controls the engine power to the current engine power.
[0072] With the engine speed at the target engine speed and the engine power at the current engine power, the engine oxidation catalyst temperature is reacquired.
[0073] When the engine oxidation catalyst temperature is re-acquired, the engine power is the current engine power, which keeps the engine power and vehicle speed constant, thus avoiding any impact on the driving experience.
[0074] Step 204: Determine whether the temperature of the re-acquired engine oxidation catalyst has reached the regeneration temperature. If it has not reached the regeneration temperature, return to step 201. If it has reached the regeneration temperature, proceed to step 205.
[0075] If the engine oxidation catalyst temperature has not reached the regeneration temperature after the engine speed reaches the target engine speed, the current engine power is acquired, and the target engine speed is redefined. The redefined target engine speed also ensures that the engine oxidation catalyst temperature is not lower than the regeneration temperature. The engine speed is then controlled at the redefined target engine speed, and the engine oxidation catalyst temperature is acquired again. If the regeneration temperature is reached, the vehicle can proceed with regeneration while driving. If the regeneration temperature has not been reached, the current engine power is acquired, and the target engine speed is redefined again, until the engine oxidation catalyst temperature reaches the regeneration temperature.
[0076] Step 205: The vehicle performs driving regeneration.
[0077] As an optional implementation method, based on the relationship between engine speed, engine power, and engine oxidation catalyst temperature, a target engine speed is determined that ensures the engine oxidation catalyst temperature is not lower than the regeneration temperature under the current engine power, including:
[0078] Determine the target temperature for the engine oxidation catalyst; wherein the target temperature is not less than the regeneration temperature.
[0079] The target temperature is corrected based on the current temperature of the engine oxidation catalyst to obtain the corrected temperature of the engine oxidation catalyst;
[0080] Based on the relationship between engine speed, engine power, and engine oxidation catalyst temperature, the engine speed corresponding to the current engine power and the corrected temperature is determined, and the target engine speed is obtained.
[0081] When determining the target temperature of the engine oxidation catalyst, the initial value of the target temperature can be set equal to the regeneration temperature, optionally 280℃. Then, using the correlation between engine speed, engine power, and engine oxidation catalyst temperature, the target engine speed corresponding to the current engine power and regeneration temperature is determined. This target engine speed is sent to the automatic transmission controller, and the current engine power is sent to the engine control unit (ECU). The engine oxidation catalyst temperature is then re-acquired, and it is determined whether the re-acquired temperature has reached the regeneration temperature. If it has not reached the regeneration temperature, the target temperature of the engine oxidation catalyst is re-determined.
[0082] Optionally, determine the target temperature for the engine oxidation catalyst, including:
[0083] Given that the current engine speed is the target engine speed, the engine oxidation catalyst temperature corresponding to the target engine speed and the current engine power is determined based on the relationship between engine speed, engine power and engine oxidation catalyst temperature, thus obtaining the target temperature of the engine oxidation catalyst.
[0084] Since the current engine speed is the target engine speed, and the current engine speed is the target engine speed under the condition that the engine oxidation catalyst temperature is not lower than the regeneration temperature, the method of determining the target temperature of the engine oxidation catalyst during the cyclic adjustment of engine speed is different from the initial determination of the target temperature of the engine oxidation catalyst as the regeneration temperature. Specifically, the corresponding relationship between engine speed, engine power and engine oxidation catalyst temperature can be used to determine the engine oxidation catalyst temperature corresponding to the target engine speed and the current engine power, thereby obtaining the target temperature of the engine oxidation catalyst.
[0085] To ensure that the engine oxidation catalyst temperature does not fall below the regeneration temperature, the predetermined target temperature of the engine oxidation catalyst can be adjusted. Specifically, the target temperature can be adjusted based on the current temperature of the engine oxidation catalyst to obtain the adjusted temperature of the engine oxidation catalyst.
[0086] Optionally, the target temperature is corrected based on the current temperature of the engine oxidation catalyst to obtain the corrected temperature of the engine oxidation catalyst, including:
[0087] Calculate the difference between the target temperature and the current temperature;
[0088] The corrected temperature of the engine oxidation catalyst is obtained by summing the difference with the target temperature.
[0089] The difference between the target temperature and the current temperature is used as the increment of the target temperature. The resulting corrected temperature is greater than the target temperature. This allows the target engine speed, obtained based on the relationship between engine speed, engine power, and engine oxidation catalyst temperature, to meet the actual measured value of the engine oxidation catalyst and reach the regeneration temperature.
[0090] The vehicle regeneration control method of the present invention can enable the engine speed and engine oil quantity to reach the regeneration temperature of the engine oxidation catalyst while maintaining the engine power and vehicle speed. This allows the engine particulate filter to smoothly enter and complete the regeneration process, avoiding the engine performance degradation problem caused by excessive carbon deposits in the particulate filter.
[0091] The present invention also provides a vehicle regeneration control system, such as Figure 3 As shown, the system includes:
[0092] The engine power acquisition module 301 is used to acquire the current engine power if the engine oxidation catalyst temperature has not reached the regeneration temperature, provided that the current carbon load of the particulate filter meets the driving regeneration conditions.
[0093] The engine speed determination module 302 is used to determine the target engine speed under the current engine power, which ensures that the engine oxidation catalyst temperature is not lower than the regeneration temperature, based on the correspondence between engine speed, engine power, and engine oxidation catalyst temperature.
[0094] The control module 303 is used to control the engine speed to the target engine speed so that the vehicle can perform driving regeneration.
[0095] In an optional embodiment, the vehicle regeneration control system provided by the present invention, such as Figure 4 As shown, the system includes:
[0096] The engine power acquisition module 401 is used to acquire the current engine power if the engine oxidation catalyst temperature has not reached the regeneration temperature, provided that the current carbon load of the particulate filter meets the driving regeneration conditions.
[0097] The engine speed determination module 402 is used to determine the target engine speed under the current engine power, which ensures that the engine oxidation catalyst temperature is not lower than the regeneration temperature, based on the correspondence between engine speed, engine power, and engine oxidation catalyst temperature.
[0098] The temperature acquisition module 403 is used to control the engine speed to the target engine speed and reacquire the engine oxidation catalyst temperature.
[0099] The judgment module 404 is used to determine whether the reacquired engine oxidation catalyst temperature has reached the regeneration temperature. If the regeneration temperature has not been reached, the engine power acquisition module 401 is executed. If the regeneration temperature has been reached, the driving regeneration module 405 is executed.
[0100] The vehicle regeneration module 405 is used to enable the vehicle to perform vehicle regeneration.
[0101] As an optional implementation, the engine speed determination module 402 is specifically used to determine the target temperature of the engine oxidation catalyst; wherein the target temperature is not less than the regeneration temperature; the target temperature is corrected based on the current temperature of the engine oxidation catalyst to obtain the corrected temperature of the engine oxidation catalyst; based on the correspondence between the engine speed, engine power and engine oxidation catalyst temperature, the engine speed corresponding to the current engine power and the corrected temperature is determined to obtain the target engine speed.
[0102] Optionally, the engine speed determination module is also used to calculate the difference between the target temperature and the current temperature; the sum of the difference and the target temperature is calculated to obtain the corrected temperature of the engine oxidation catalyst.
[0103] Optionally, the engine speed determination module is also used to determine the engine oxidation catalyst temperature corresponding to the target engine speed and the current engine power based on the correspondence between the engine speed, engine power and engine oxidation catalyst temperature when the current engine speed is the target engine speed, so as to obtain the target temperature of the engine oxidation catalyst.
[0104] Optionally, the temperature acquisition module 403 is specifically used to send the target engine speed to the automatic transmission controller so that the automatic transmission controller controls the engine speed to the target engine speed; send the current engine power to the engine controller so that the engine controller controls the engine power to the current engine power; and reacquire the engine oxidation catalyst temperature when the engine speed is the target engine speed and the engine power is the current engine power.
[0105] As an optional implementation, the vehicle regeneration control system provided by the present invention further includes:
[0106] The carbon load calculation module is used to calculate the current carbon load of the particulate filter based on the current engine speed and engine oil level; determine whether the current carbon load is not less than the preset value of carbon load for vehicle regeneration; if the current carbon load is not less than the preset value of carbon load for vehicle regeneration, then it is determined that the current carbon load of the particulate filter meets the conditions for vehicle regeneration.
[0107] This invention provides a computer-readable storage medium storing a program thereon, which, when executed by a processor, implements the above-described vehicle regeneration control method.
[0108] This invention provides an electronic device, such as... Figure 5 As shown, the electronic device 50 includes at least one processor 501, at least one memory 502 connected to the processor 501, and a bus 503; wherein the processor 501 and the memory 502 communicate with each other through the bus 503; the processor 501 is used to call program instructions in the memory 502 to execute the above-mentioned vehicle regeneration control method. The electronic device in this article may be a server, PC, PAD, mobile phone, etc.
[0109] This application also provides a computer program product that, when executed on a data processing device, is adapted to perform a program that initializes the steps included in the above-described vehicle regeneration control method.
[0110] This application is described with reference to flowchart illustrations and / or block diagrams of methods, systems, and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.
[0111] In a typical configuration, the device includes one or more processors (CPUs), memory, and a bus. The device may also include input / output interfaces, network interfaces, etc.
[0112] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, like read-only memory (ROM) or flash RAM, and memory includes at least one memory chip. Memory is an example of computer-readable media.
[0113] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.
[0114] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.
[0115] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.
[0116] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0117] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A method for controlling vehicle regeneration, characterized in that, include: If the current carbon load of the particulate filter meets the conditions for vehicle regeneration, and the engine oxidation catalyst temperature has not reached the regeneration temperature, then the current engine power is obtained. Based on the relationship between engine speed, engine power and engine oxidation catalyst temperature, the target engine speed is determined under the condition that the engine oxidation catalyst temperature is not lower than the regeneration temperature at the current engine power. The target engine speed is sent to the automatic transmission controller so that the automatic transmission controller controls the engine speed to the target engine speed. The current engine power is sent to the engine controller so that the engine controller controls the engine power to the current engine power so that the vehicle can perform driving regeneration.
2. The vehicle regeneration control method according to claim 1, characterized in that, The step of sending the target engine speed to the automatic transmission controller, so that the automatic transmission controller controls the engine speed to the target engine speed, and sending the current engine power to the engine controller, so that the engine controller controls the engine power to the current engine power, to enable the vehicle to perform driving regeneration, includes: The target engine speed is sent to the automatic transmission controller so that the automatic transmission controller controls the engine speed to the target engine speed. The current engine power is sent to the engine controller so that the engine controller controls the engine power to the current engine power. The engine oxidation catalyst temperature is then reacquired. Determine whether the reacquired engine oxidation catalyst temperature has reached the regeneration temperature, and if it has not reached the regeneration temperature, return to the step "acquire current engine power" until the regeneration temperature is reached so that the vehicle can perform driving regeneration.
3. The vehicle regeneration control method according to claim 1 or 2, characterized in that, The determination of the target engine speed, ensuring the engine oxidation catalyst temperature is not lower than the regeneration temperature under the current engine power, based on the correlation between engine speed, engine power, and engine oxidation catalyst temperature, includes: Determine the target temperature for the engine oxidation catalyst; wherein the target temperature is not less than the regeneration temperature; The target temperature is corrected based on the current temperature of the engine oxidation catalyst to obtain the corrected temperature of the engine oxidation catalyst; Based on the correspondence between the engine speed, engine power, and engine oxidation catalyst temperature, the engine speed corresponding to the current engine power and the corrected temperature is determined, and the target engine speed is obtained.
4. The vehicle regeneration control method according to claim 3, characterized in that, The process of correcting the target temperature based on the current temperature of the engine oxidation catalyst to obtain the corrected temperature of the engine oxidation catalyst includes: Calculate the difference between the target temperature and the current temperature; The corrected temperature of the engine oxidation catalyst is obtained by summing the difference with the target temperature.
5. The vehicle regeneration control method according to claim 3, characterized in that, Determining the target temperature of the engine oxidation catalyst includes: Given that the current engine speed is the target engine speed, based on the correspondence between the engine speed, engine power, and engine oxidation catalyst temperature, the engine oxidation catalyst temperature corresponding to the target engine speed and the current engine power is determined, and the target temperature of the engine oxidation catalyst is obtained.
6. The vehicle regeneration control method according to claim 2, characterized in that, The steps of sending the target engine speed to the automatic transmission controller so that the automatic transmission controller controls the engine speed to the target engine speed, sending the current engine power to the engine controller so that the engine controller controls the engine power to the current engine power, and re-acquiring the engine oxidation catalyst temperature include: The target engine speed is sent to the automatic transmission controller so that the automatic transmission controller controls the engine speed to the target engine speed. The current engine power is sent to the engine controller so that the engine controller controls the engine power to the current engine power. When the engine speed is the target engine speed and the engine power is the current engine power, the engine oxidation catalyst temperature is re-acquired.
7. The vehicle regeneration control method according to claim 1, characterized in that, Also includes: Calculate the current carbon load of the particulate filter based on the current engine speed and engine oil level; Determine whether the current carbon load is not less than the preset value of the vehicle's regenerated carbon load; If the current carbon load is not less than the preset value of the carbon load for vehicle regeneration, then the current carbon load of the particulate filter is determined to meet the vehicle regeneration conditions.
8. A vehicle regeneration control system, characterized in that, include: The engine power acquisition module is used to acquire the current engine power if the engine oxidation catalyst temperature has not reached the regeneration temperature, provided that the current carbon load of the particulate filter meets the driving regeneration conditions. The engine speed determination module is used to determine the target engine speed under the current engine power, where the engine oxidation catalyst temperature is not lower than the regeneration temperature, based on the correspondence between engine speed, engine power and engine oxidation catalyst temperature. The control module is used to send the target engine speed to the automatic transmission controller so that the automatic transmission controller controls the engine speed to the target engine speed, and to send the current engine power to the engine controller so that the engine controller controls the engine power to the current engine power, so that the vehicle can perform driving regeneration.
9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a program that, when executed by a processor, implements the vehicle regeneration control method according to any one of claims 1-7.
10. An electronic device, characterized in that, include: At least one processor, and at least one memory and bus connected to the processor; The processor and the memory communicate with each other via the bus; The processor is used to call program instructions in the memory to execute the vehicle regeneration control method according to any one of claims 1-7.