Post-processing temperature management method, device, equipment and storage medium

Abstract

The present application provides a post-processing temperature management method, device, equipment and storage medium, the method comprising obtaining the running time and speed of a vehicle collected within a period of time before the current time; determining the time proportion during the running time when the speed is less than a speed threshold, and determining whether the time proportion is greater than the time proportion threshold; if so, determining that the vehicle is in a first operating condition, and when it is detected that the carbon load of the vehicle is greater than an upper limit threshold of the carbon load, increasing the fuel injection amount by worsening diesel combustion through the fuel system and the air system to increase the DPF temperature, and switching the vehicle from normal mode to a specific mode; if not, determining that the vehicle is in a second operating condition, and when it is detected that the carbon load of the vehicle is greater than a driving regeneration carbon load threshold, switching the vehicle from normal mode to driving regeneration mode; the upper limit threshold of the carbon load is less than the driving regeneration carbon load threshold; ensuring the carbon deposit combustion rate without affecting the normal use of the vehicle, while ensuring the engine performance and the reliability of the DPF.

Description

Technical Field

[0001] The present application relates to the technical field of automobile exhaust aftertreatment, and in particular to a method, device, equipment and storage medium for aftertreatment temperature management. Background Art

[0002] Existing vehicles will collect the carbon load in the particulate filter DPF (Diesel Particulate Filter) in real time during driving. If the carbon load is detected to be greater than the driving regeneration carbon load threshold, it is determined that it is necessary to switch to the driving regeneration mode. In the driving regeneration mode, the engine worsens the diesel combustion through the fuel system and the air system, and increases the additional fuel injection amount to increase the temperature of the particulate filter DPF. When the increased temperature meets the carbon deposit combustion temperature, the carbon deposits in the DPF can be fully burned. After the carbon deposits are fully burned, the fuel injection amount is reduced and the vehicle is switched back to normal driving mode.

[0003] However, daily factory work requires the use of special-purpose vehicles such as in-plant shuttles and water sprinklers that operate at low speeds for extended periods of time. Due to the low engine load, these special-purpose vehicles experience lower temperatures in driving regeneration mode, slowing the combustion of carbon deposits. This worsens diesel combustion, leading to increased carbon deposits and making it impossible to effectively exit driving regeneration mode.

[0004] The engine performance of a vehicle running in driving regeneration mode for a long time will deteriorate, and the more carbon accumulates in the DPF, the more exhaust resistance will increase, which will further deteriorate the engine performance. When the carbon load of the DPF is overloaded, if the carbon deposits cannot be cleaned in time by humans, the vehicle will be stopped directly and switched to parking regeneration mode through manual control. The engine temperature will increase to a higher level to burn the carbon deposits, but the DPF may be burned, affecting the reliability of the DPF. Therefore, there is an urgent need for a method to identify the operating conditions of special-purpose vehicles and ensure the carbon deposit combustion rate without affecting the normal use of special-purpose vehicles, while ensuring the engine performance and the reliability of the DPF. Summary of the Invention

[0005] The present application provides a post-processing temperature management method, device, equipment and storage medium for identifying the operating conditions of special-purpose vehicles, and can ensure the carbon deposit combustion rate without affecting the normal use of special-purpose vehicles, while ensuring the performance of the engine and the reliability of the DPF.

[0006] In a first aspect, the present application provides a post-processing temperature management method, comprising:

[0007] Get the running time and speed of the vehicle collected within a period of time before the current time;

[0008] Determining a time percentage during the running time when the vehicle speed is less than a vehicle speed threshold, and determining whether the time percentage is greater than the time percentage threshold;

[0009] If so, determining that the vehicle's operating condition is the first operating condition, and upon detecting that the current carbon load of the vehicle is greater than an upper carbon load threshold, worsening diesel combustion through the fuel system and the air system, and increasing the amount of fuel injection to increase the temperature of the particulate filter (DPF), switching the vehicle from the normal mode to the specific mode;

[0010] If not, determining that the vehicle is in the second operating condition, and upon detecting that the current carbon load of the vehicle is greater than a driving regeneration carbon load threshold, worsening diesel combustion through the fuel system and the air system, and increasing the amount of fuel injection to increase the temperature of the particulate filter (DPF), thereby switching the vehicle from the normal mode to the driving regeneration mode;

[0011] Among them, the carbon load upper limit threshold is less than the driving regeneration carbon load threshold.

[0012] Optionally, after obtaining the vehicle's running time and speed collected in normal mode within a period of time before the current time, the following is also included:

[0013] The duration during which the vehicle speed is greater than the vehicle speed setting value is determined, and when it is determined that the duration is greater than a time setting threshold, the operating condition of the vehicle is determined to be the second operating condition.

[0014] Optionally, after switching the vehicle from the normal mode to the specific mode, the method further includes:

[0015] If the carbon load is detected to be greater than the parking regeneration carbon load threshold, a prompt message is output to switch to the parking regeneration mode;

[0016] When a parking regeneration mode switching instruction is detected, diesel combustion is aggravated through the fuel system and the air system, and the fuel injection amount is increased to increase the temperature of the particulate filter (DPF), thereby switching the vehicle from the specific mode to the parking regeneration mode.

[0017] Optionally, after switching the vehicle from the normal mode to the specific mode, the method further includes:

[0018] When it is detected that the carbon load is less than the carbon load lower limit threshold, the deterioration of diesel combustion is stopped through the fuel system and the air system, the increase of the fuel injection amount is stopped, and the vehicle is switched from the specific mode to the normal mode.

[0019] Optionally, after switching the vehicle from the specific mode to the parking regeneration mode, the method further includes:

[0020] When the carbon load is detected to be less than a lower carbon load threshold, the fuel system and the air system are used to stop deteriorating diesel combustion, stop increasing the fuel injection amount, and switch the vehicle from the parking regeneration mode to the normal mode.

[0021] In a second aspect, the present application provides a post-processing temperature management device, comprising:

[0022] The acquisition module is used to obtain the running time and speed of the vehicle collected within a period of time before the current time;

[0023] a determination module, configured to determine a time percentage during the operating time when the vehicle speed is less than a vehicle speed threshold, and determine whether the time percentage is greater than the time percentage threshold; if so, determine that the vehicle operating condition is a first operating condition; if not, determine that the vehicle operating condition is a second operating condition;

[0024] a switching module configured to, upon determining that the vehicle's operating condition is the first operating condition, worsen diesel combustion through the fuel system and the air system and increase fuel injection to raise the temperature of the particulate filter (DPF) and switch the vehicle from the normal mode to the specific mode when detecting that the current vehicle's carbon load is greater than an upper carbon load threshold, and, upon determining that the vehicle's operating condition is the second operating condition, worsen diesel combustion through the fuel system and the air system and increase fuel injection to raise the temperature of the particulate filter (DPF) and switch the vehicle from the normal mode to the driving regeneration mode when detecting that the current vehicle's carbon load is greater than a driving regeneration carbon load threshold, and, upon determining that the vehicle's operating condition is the second operating condition, worsen diesel combustion through the fuel system and the air system and increase fuel injection to raise the temperature of the particulate filter (DPF) and switch the vehicle from the normal mode to the driving regeneration mode;

[0025] Among them, the carbon load upper limit threshold is less than the driving regeneration carbon load threshold.

[0026] Optionally, the determination module is further configured to determine a duration during which the vehicle speed is greater than a set vehicle speed value within the operating time, and when it is determined that the duration is greater than a set time threshold, determine that the operating condition of the vehicle is the second operating condition.

[0027] Optionally, the switching module is further configured to detect that the carbon load is greater than a parking regeneration carbon load threshold and output a prompt message for switching to the parking regeneration mode;

[0028] When a parking regeneration mode switching instruction is detected, diesel combustion is aggravated through the fuel system and the air system, and the fuel injection amount is increased to increase the temperature of the particulate filter (DPF), thereby switching the vehicle from the specific mode to the parking regeneration mode.

[0029] Optionally, the switching module is further configured to stop deteriorating diesel combustion and increasing fuel injection through the fuel system and the air system, and switch the vehicle from the specific mode to the normal mode when detecting that the carbon load is less than a lower carbon load threshold.

[0030] Optionally, the switching module is further configured to stop deteriorating diesel combustion through the fuel system and the air system, stop increasing the fuel injection amount, and switch the vehicle from the parking regeneration mode to the normal mode when detecting that the carbon load is less than a lower carbon load threshold.

[0031] In a third aspect, the present application provides a post-processing temperature management device, the device comprising:

[0032] At least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the post-processing temperature management method as described in any one of the first aspects.

[0033] In a fourth aspect, the present application provides a storage medium storing a computer program, wherein the computer program is used to enable a computer to execute the method as described in any one of the first aspects.

[0034] According to the present application, a post-processing temperature management method, device, equipment and storage medium are provided, which can be used to identify the operating conditions of special-purpose vehicles, and can ensure the carbon deposit combustion rate without affecting the normal use of special-purpose vehicles, while ensuring the performance of the engine and the reliability of the DPF. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A flowchart provided according to an embodiment of the present application;

[0036] Figure 2 A flowchart provided according to an embodiment of the present application;

[0037] Figure 3 A schematic diagram of a module provided according to an embodiment of the present application;

[0038] Figure 4 A schematic diagram of a device provided according to an embodiment of the present application;

[0039] Figure 5 The present invention provides a storage medium according to an embodiment of the present application. DETAILED DESCRIPTION

[0040] While the vehicle is in motion, it collects real-time data on the carbon load in the Diesel Particulate Filter (DPF). If the detected carbon load exceeds the driving regeneration threshold, the vehicle switches to driving regeneration mode. In driving regeneration mode, the engine enhances diesel combustion through the fuel and air systems and increases the fuel injection rate to raise the DPF temperature. When the elevated temperature reaches the carbon deposit combustion temperature, the carbon deposits in the DPF can be fully burned. After the carbon deposits are fully burned, the fuel injection rate is reduced and the vehicle switches back to normal driving mode. However, daily factory operations require the use of special-purpose vehicles such as in-plant shuttles and water sprinklers, which operate at low speeds for extended periods. Due to the low engine load, these special-purpose vehicles operate at lower temperatures in driving regeneration mode, slowing the combustion of carbon deposits. This enhanced diesel combustion can lead to an increase in carbon deposits, making it impossible to effectively exit driving regeneration mode. If the vehicle is operated in driving regeneration mode for a long time, the engine performance will deteriorate. The more carbon accumulates in the DPF, the more exhaust resistance will increase, which will further deteriorate the engine performance. When the DPF is overloaded with carbon, if the carbon deposits cannot be cleaned in time and the vehicle is stopped directly and switched to parking regeneration mode by manual control, the engine temperature will rise higher to burn the carbon deposits, but the DPF may be burned, affecting the reliability of the DPF.

[0041] Therefore, this application proposes a post-processing temperature management method, device, equipment and storage medium that can identify the operating conditions of the vehicle, and can ensure the carbon deposit combustion rate without affecting the normal use of special-purpose vehicles, while ensuring the performance of the engine and the reliability of the DPF.

[0042] In the first aspect, the present application proposes a post-processing temperature management method, such as Figure 1 As shown, including:

[0043] Step 101: Obtain the running time and speed of the vehicle collected within a period of time before the current time.

[0044] Step 102 , determining the time proportion during the running time when the vehicle speed is less than the vehicle speed threshold, and determining whether the time proportion is greater than the time proportion threshold; if so, proceeding to step 103 , if not, proceeding to step 104 .

[0045] Optionally, first obtain the vehicle's running time and speed collected within a period of time before the current time. Generally, the vehicle's speed can burn off the carbon deposits when running in driving regeneration mode, and ensure the carbon deposit combustion speed. After the carbon deposits are burned, the driving regeneration mode can be exited and returned to normal operating mode. However, in the case of sprinkler trucks and short-distance vehicles in the field, the running speed is very low most of the time. Due to the low speed, the load is low, and the temperature of the carbon deposits burned when the vehicle enters the driving regeneration mode is low. At the same time, because the driving regeneration mode will worsen diesel combustion to increase the temperature, the already large amount of carbon deposits will increase, causing the vehicle to continue running in driving regeneration mode. Therefore, the vehicle's running time and speed are collected, and the vehicle's operating conditions are judged based on the proportion of time during which the speed is less than the speed threshold during the running time, and the vehicle is switched to different operating modes based on the vehicle's operating conditions.

[0046] Step 103: Determine that the vehicle is in a first operating condition. When it is detected that the current carbon load of the vehicle is greater than an upper carbon load threshold, deteriorate diesel combustion through the fuel system and the air system, increase the fuel injection amount to raise the temperature of the particulate filter (DPF), and switch the vehicle from the normal mode to the specific mode.

[0047] Optionally, based on the proportion of time during which the vehicle speed is less than the vehicle speed threshold during the operating time, and determining that the time proportion is greater than the time proportion threshold, it indicates that the vehicle has been running at a low speed for a long time, that is, these vehicles may be the special-purpose vehicles such as the above-mentioned sprinkler trucks and on-site short-distance vehicles. When these special-purpose vehicles are working, the speed is generally relatively low, and the operating condition of the special-purpose vehicles when working is defined as the above-mentioned first operating condition; when the operating condition of the vehicle is determined to be the first operating condition, when it is detected that the current carbon load of the vehicle is greater than the carbon load upper limit threshold, it means that carbon deposits need to be cleaned, otherwise it will affect the performance of the engine, and the diesel combustion is worsened and the injection amount is increased through the fuel system and the air system. The means of worsening diesel combustion is to worsen the diesel combustion by reducing the main injection advance angle, turning on the post-injection, and reducing the opening of the intake throttle valve to hold the breath, so that the diesel is atomized in the cylinder to increase the temperature of the particulate filter DPF. The increased injection amount is the increased diesel in addition to maintaining normal operation of the engine. The vehicle switches from the normal operating mode to the specific mode to burn the carbon deposits in the DPF.

[0048] Step 104, determining that the vehicle's operating condition is the second operating condition, and when detecting that the current vehicle's carbon load is greater than the driving regeneration carbon load threshold, worsening diesel combustion through the fuel system and the air system, and increasing the fuel injection amount to increase the particulate filter DPF temperature, switching the vehicle from the normal mode to the driving regeneration mode; wherein the carbon load upper limit threshold is less than the driving regeneration carbon load threshold.

[0049] Optionally, based on the proportion of time during which the vehicle speed is less than the vehicle speed threshold during the operating time, and determining that the time proportion is not greater than the time proportion threshold, it means that although the vehicle is running at a low speed, the time of low speed is not long. It may be because the vehicle needs to stop or is stuck in traffic and the speed is low, but the vehicle speed at other times is greater than the set vehicle speed threshold. Therefore, the vehicle is still classified as a normal-purpose vehicle, and the operating condition of the normal-purpose vehicle during operation is defined as the second operating condition. When it is detected that the carbon load of the current vehicle is greater than the driving regeneration carbon load threshold, the diesel combustion is worsened through the fuel system and the air system, and the fuel injection amount is increased to increase the temperature of the particulate filter DPF, and the vehicle is switched from normal mode to driving regeneration mode. Since the upper limit of the temperature increase is related to the vehicle speed, the higher the vehicle speed, the higher the temperature The higher the upper limit, the higher the temperature, the faster the carbon deposits will burn. Therefore, when the vehicle's operating condition is the first operating condition, the upper limit of the temperature will be lower than that of the second operating condition, so the speed of burning carbon deposits will be slower. However, when diesel combustion is deteriorated through the fuel system and the air system, carbon deposits will also be generated and will affect the vehicle's engine. Although the upper limit of the temperature that the vehicle can reach when operating in the first operating condition is lower than the upper limit of the temperature when the vehicle operates in the second operating condition, the upper limit threshold of the carbon load when the vehicle switches from normal operating mode to a specific mode when operating in the first operating condition is lower than the driving regeneration carbon load threshold when the vehicle switches from normal mode to driving regeneration mode when operating in the second operating condition. This can ensure that the vehicle increases the carbon deposit combustion speed in special mode and improves vehicle efficiency.

[0050] In summary, the present application proposes a post-processing temperature management method, which distinguishes different operating conditions of the vehicle by the speed and running time of the vehicle, and controls the vehicle to different operating modes according to the different operating conditions of the vehicle and the amount of carbon load. When it is determined that the time proportion of the vehicle speed within the running time is less than the vehicle speed threshold, and it is determined that the time proportion is greater than the time proportion threshold, the operating condition of the vehicle is determined to be the first operating condition. When it is detected that the carbon load of the current vehicle is greater than the upper limit threshold of the carbon load, the diesel combustion is aggravated through the fuel system and the air system, and the fuel injection amount is increased to increase the temperature of the particulate filter DPF, and the vehicle is switched from normal mode to special mode. fixed mode; when it is determined that the time proportion during the operating time is less than the vehicle speed threshold, and it is determined that the time proportion is not greater than the time proportion threshold, the vehicle's operating condition is determined to be the second operating condition, and when it is detected that the carbon load of the current vehicle is greater than the driving regeneration carbon load threshold, the diesel combustion is worsened through the fuel system and the air system, and the fuel injection amount is increased to increase the temperature of the particulate filter DPF, and the vehicle is switched from the normal mode to the driving regeneration mode, and the carbon load upper limit threshold is less than the driving regeneration carbon load threshold, so that the carbon deposit combustion speed can be guaranteed without affecting the normal use of the vehicle, while ensuring the engine performance and DPF reliability.

[0051] Optionally, after obtaining the running time and speed of the vehicle collected in normal mode within a period of time before the current time, it also includes: determining the duration of the vehicle speed greater than the speed setting value during the running time, and when it is judged that the duration is greater than the time setting threshold, determining that the operating condition of the vehicle is the second operating condition; when the vehicle's operating condition is the first operating condition for a long time, it may end the work and increase the speed to return to the parking lot, etc. For example, after the sprinkler truck finishes the watering work, it will increase the speed and return to the sprinkler truck parking lot from the work site. According to the duration of the vehicle speed greater than the speed setting value during the running time, and when it is judged that the duration is greater than the time setting threshold, it is determined that the sprinkler truck switches from the first operating condition to the second operating condition, and the vehicle operation mode is switched according to the mode of the second operating condition.

[0052] Optionally, after switching the vehicle from normal mode to specific mode, the following further comprises: detecting that the carbon load is greater than the parking regeneration carbon load threshold, outputting a prompt message to switch to parking regeneration mode; upon detecting the parking regeneration mode switch indication, worsening diesel combustion through the fuel system and air system, and increasing the fuel injection volume to raise the temperature of the particulate filter (DPF), thereby switching the vehicle from specific mode to parking regeneration mode. When the vehicle switches from normal mode to specific mode, carbon deposits will generally be burned. However, due to the decline in the function of the catalytic converter (DOC) and the DPF, the carbon deposits cannot be effectively burned, resulting in the carbon load continuing to increase until it reaches the parking regeneration carbon load threshold. At this time, the parking regeneration mode is required to burn all the carbon deposits. When it is detected that the carbon load is greater than the parking regeneration carbon load threshold, a prompt message for switching to parking regeneration mode is output. The engine will not automatically jump to parking regeneration mode. The driver needs to see or hear the prompt message for switching to parking regeneration mode and manually operate it. After the parking regeneration mode switching indication is detected, the vehicle will stop and perform parking regeneration mode, worsen diesel combustion through the fuel system and air system, and increase the fuel injection amount to increase the temperature of the particulate filter DPF to burn carbon deposits.

[0053] Optionally, after switching the vehicle from normal mode to the specific mode, the process further includes: upon detecting that the carbon load is less than a lower carbon load threshold, stopping the degradation of diesel combustion and increasing the fuel injection rate through the fuel system and air system, thereby switching the vehicle from the specific mode to the normal mode. When the vehicle burns carbon deposits in the specific mode, and the carbon load of the vehicle after combustion is less than the lower carbon load threshold, the vehicle can be switched from the specific mode back to the normal mode, stopping the increase in fuel injection rate. The fuel injection rate at this point is only required to maintain normal engine operation and stop degradation of diesel combustion, at which point the temperature will normally drop to the normal operating temperature of the engine.

[0054] Optionally, after switching the vehicle from the specific mode to the parking regeneration mode, the process further includes: upon detecting that the carbon load is less than a lower carbon load threshold, stopping the degradation of diesel combustion through the fuel system and the air system, stopping increasing the fuel injection amount, and switching the vehicle from the parking regeneration mode to the normal mode. If the vehicle burns carbon deposits in the parking regeneration mode, and the carbon load of the vehicle after combustion is less than the lower carbon load threshold, the vehicle can be switched from the parking regeneration mode back to the normal mode, stopping increasing the fuel injection amount. The fuel injection amount at this time is only required to maintain normal engine operation and stop degradation of diesel combustion, at which point the temperature will normally drop to the normal operating temperature of the engine.

[0055] In summary, this application provides a post-processing temperature management method, such as Figure 2 As shown, including:

[0056] Step 201: Obtain the running time and speed of the vehicle collected within a period of time before the current time.

[0057] Step 202 , determine the time proportion during the running time when the vehicle speed is less than the vehicle speed threshold, and determine whether the time proportion is greater than the time proportion threshold; if so, proceed to step 203 , if not, proceed to step 204 .

[0058] Step 203: Determine that the vehicle's operating condition is the first operating condition. When it is detected that the current carbon load of the vehicle is greater than an upper carbon load threshold, deteriorate diesel combustion through the fuel system and the air system, increase the fuel injection amount to raise the DPF temperature, and switch the vehicle from the normal mode to the specific mode.

[0059] Step 204, determining that the vehicle's operating condition is the second operating condition, and when detecting that the current vehicle's carbon load is greater than the driving regeneration carbon load threshold, worsening diesel combustion through the fuel system and the air system, and increasing the fuel injection amount to increase the particulate filter DPF temperature, switching the vehicle from the normal mode to the driving regeneration mode; wherein the carbon load upper limit threshold is less than the driving regeneration carbon load threshold.

[0060] Step 205 , determining a duration during which the vehicle speed is greater than the set vehicle speed value within the running time, and when it is determined that the duration is greater than a set time threshold, determining that the running condition of the vehicle is the second running condition.

[0061] Step 206 , when it is detected that the carbon load is greater than the parking regeneration carbon load threshold, a prompt message is output to switch to the parking regeneration mode; when the parking regeneration mode switch indication is detected, the diesel combustion is aggravated through the fuel system and the air system, and the fuel injection amount is increased to increase the temperature of the particulate filter DPF, thereby switching the vehicle from the specific mode to the parking regeneration mode.

[0062] Step 207 : When it is detected that the carbon load is less than the carbon load lower threshold, the fuel system and the air system are used to stop deteriorating the diesel combustion, stop increasing the fuel injection amount, and switch the vehicle from the specific mode to the normal mode.

[0063] Step 208 : When the carbon load is detected to be less than the lower carbon load threshold, the fuel system and the air system are used to stop deteriorating the diesel combustion, stop increasing the fuel injection amount, and switch the vehicle from the parking regeneration mode to the normal mode.

[0064] The method proposed by the present invention can identify the operating conditions of special-purpose vehicles and ensure the carbon deposit combustion speed without affecting the normal use of special-purpose vehicles, while ensuring the performance of the engine and the reliability of the DPF.

[0065] In the second aspect, the present application provides a post-processing temperature management device, such as Figure 3 As shown, including:

[0066] The acquisition module 301 is used to obtain the running time and speed of the vehicle collected within a period of time before the current time;

[0067] Determination module 302 is configured to determine a time percentage during the operating time when the vehicle speed is less than a vehicle speed threshold, and determine whether the time percentage is greater than the time percentage threshold; if so, determine that the vehicle operating condition is a first operating condition; if not, determine that the vehicle operating condition is a second operating condition;

[0068] The switching module 303 is used to, after determining that the vehicle's operating condition is the first operating condition, worsen diesel combustion through the fuel system and the air system, and increase the fuel injection amount to increase the particulate filter DPF temperature when detecting that the current vehicle's carbon load is greater than the carbon load upper limit threshold, thereby switching the vehicle from the normal mode to the specific mode; after determining that the vehicle's operating condition is the second operating condition, worsen diesel combustion through the fuel system and the air system, and increase the fuel injection amount to increase the particulate filter DPF temperature when detecting that the current vehicle's carbon load is greater than the driving regeneration carbon load threshold, thereby switching the vehicle from the normal mode to the driving regeneration mode; wherein the carbon load upper limit threshold is less than the driving regeneration carbon load threshold.

[0069] Optionally, the determination module is further configured to determine a duration during which the vehicle speed is greater than a set vehicle speed value during the operating time, and when the duration is determined to be greater than a set time threshold, determine that the operating condition of the vehicle is the second operating condition.

[0070] Optionally, the switching module is further configured to detect that the carbon load is greater than a parking regeneration carbon load threshold and output a prompt message for switching to the parking regeneration mode;

[0071] When the parking regeneration mode switching instruction is detected, the diesel combustion is worsened through the fuel system and air system, and the injection amount is increased to increase the particulate filter DPF temperature, switching the vehicle from a specific mode to the parking regeneration mode.

[0072] Optionally, the switching module is further configured to stop deteriorating diesel combustion through the fuel system and the air system, stop increasing the fuel injection amount, and switch the vehicle from the specific mode to the normal mode when it detects that the carbon load is less than a lower carbon load threshold.

[0073] Optionally, the switching module is further configured to stop deteriorating diesel combustion through the fuel system and the air system, stop increasing the fuel injection amount, and switch the vehicle from the parking regeneration mode to the normal mode when detecting that the carbon load is less than a lower carbon load threshold.

[0074] In a third aspect, the present application provides a post-processing temperature management device, the device comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the above-mentioned post-processing temperature management method.

[0075] like Figure 4 As shown, the device includes a processor 401 , a memory 402 , a communication interface 403 and a bus 404 . The processor 401 , the memory 402 and the communication interface 403 are interconnected via the bus 404 .

[0076] The processor 401 is configured to read and execute instructions in the memory 402 , so that at least one processor can execute the post-processing temperature management method provided in the above embodiment.

[0077] The memory 402 is used to store various instructions and programs of the post-processing temperature management method provided in the above embodiment.

[0078] The bus 404 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 4 Only one thick line is used in the diagram, but this does not mean that there is only one bus or one type of bus.

[0079] The processor 401 may be a central processing unit (CPU), a network processor (NP), a graphic processing unit (GPU), or any combination of a CPU, NP, and GPU. It may also be a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL), or any combination thereof.

[0080] In a fourth aspect, the present application also provides a computer-readable storage medium, such as Figure 5 As shown, the computer storage medium stores a computer program, and the computer program is used to enable a computer to execute any one of the methods in the above embodiments.

[0081] The memory may include readable media in the form of volatile memory, such as random access memory (RAM) 1321 and / or cache memory 1322 , and may further include read-only memory (ROM) 1323 .

[0082] The memory may also include a program / utility 1325 having a set (at least one) of program modules 1324, such program modules 1324 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0083] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0084] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0085] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0086] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0087] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A post-processing temperature management method, characterized in that: include: Get the running time and speed of the vehicle collected within a period of time before the current time; Determining a time percentage during the running time when the vehicle speed is less than a vehicle speed threshold, and determining whether the time percentage is greater than the time percentage threshold; If so, it is determined that the operating condition of the vehicle is the first operating condition, and when it is detected that the carbon load of the current vehicle is greater than the upper carbon load threshold, the diesel combustion is aggravated through the fuel system and the air system, and the fuel injection amount is increased to increase the temperature of the particulate trap DPF, and the vehicle is switched from the normal mode to the specific mode; after the vehicle is switched from the normal mode to the specific mode, it is detected that the carbon load is greater than the parking regeneration carbon load threshold, and a prompt message for switching to the parking regeneration mode is output; when the parking regeneration mode switching indication is detected, the diesel combustion is aggravated through the fuel system and the air system, and the fuel injection amount is increased to increase the temperature of the particulate trap DPF, and the vehicle is switched from the specific mode to the parking regeneration mode; when it is detected that the carbon load is less than the lower carbon load threshold, the aggravation of the diesel combustion and the increase in the fuel injection amount are stopped through the fuel system and the air system, and the vehicle is switched from the parking regeneration mode to the normal mode; If not, determining that the vehicle is in the second operating condition, and upon detecting that the current carbon load of the vehicle is greater than a driving regeneration carbon load threshold, worsening diesel combustion through the fuel system and the air system, and increasing the amount of fuel injection to increase the temperature of the particulate filter (DPF), thereby switching the vehicle from the normal mode to the driving regeneration mode; Among them, the carbon load upper limit threshold is less than the driving regeneration carbon load threshold.

2. The method according to claim 1, characterized in that After obtaining the vehicle's running time and speed collected in normal mode within a period of time before the current time, it also includes: The duration during which the vehicle speed is greater than the vehicle speed setting value is determined, and when it is determined that the duration is greater than a time setting threshold, the operating condition of the vehicle is determined to be the second operating condition.

3. The method according to claim 1, characterized in that After the vehicle is switched from normal mode to a specific mode, it also includes: When it is detected that the carbon load is less than the carbon load lower limit threshold, the deterioration of diesel combustion is stopped through the fuel system and the air system, the increase of the fuel injection amount is stopped, and the vehicle is switched from the specific mode to the normal mode.

4. A post-processing temperature management device, characterized in that: include: The acquisition module is used to obtain the running time and speed of the vehicle collected within a period of time before the current time; a determination module, configured to determine a time percentage during the running time when the vehicle speed is less than a vehicle speed threshold, and determine whether the time percentage is greater than a time percentage threshold; If yes, determining that the operating condition of the vehicle is the first operating condition; if no, determining that the operating condition of the vehicle is the second operating condition; The switching module is configured to, after determining that the vehicle's operating condition is the first operating condition, worsen diesel combustion through the fuel system and the air system and increase the fuel injection amount to increase the particulate filter DPF temperature after detecting that the current vehicle's carbon load is greater than the carbon load upper limit threshold, and switch the vehicle from the normal mode to the specific mode; after the vehicle is switched from the normal mode to the specific mode, if it detects that the carbon load is greater than the parking regeneration carbon load threshold, output a prompt message for switching to the parking regeneration mode; and when a parking regeneration mode switching indication is detected, worsen diesel combustion through the fuel system and the air system and increase the fuel injection amount to increase the particulate filter DPF temperature. When the DPF temperature of the particulate filter increases, the vehicle is switched from the specific mode to the parking regeneration mode; when it is detected that the carbon load is less than a lower carbon load threshold, the fuel system and the air system are used to stop deteriorating diesel combustion, stop increasing the fuel injection amount, and switch the vehicle from the parking regeneration mode to the normal mode; after determining that the vehicle's operating condition is the second operating condition, when it is detected that the current carbon load of the vehicle is greater than a driving regeneration carbon load threshold, the fuel system and the air system are used to deteriorate diesel combustion, increase the fuel injection amount, and increase the particulate filter DPF temperature, and switch the vehicle from the normal mode to the driving regeneration mode; Among them, the carbon load upper limit threshold is less than the driving regeneration carbon load threshold.

5. The device according to claim 4, characterized in that The determination module is further configured to determine a duration during which the vehicle speed is greater than a set vehicle speed value within the operating time, and determine that the operating condition of the vehicle is the second operating condition when it is determined that the duration is greater than a set time threshold.

6. The device according to claim 4, characterized in that The switching module is further configured to stop deteriorating diesel combustion and increasing fuel injection through the fuel system and the air system, and switch the vehicle from the specific mode to the normal mode when detecting that the carbon load is less than a lower carbon load threshold.

7. A post-processing temperature management device, characterized in that: The device comprises: At least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to execute the post-processing temperature management method according to any one of claims 1 to 3.

8. A storage medium, characterized in that: The storage medium stores a computer program, and the computer program is used to enable a computer to execute the method according to any one of claims 1 to 3.

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