A control method, system and device for prolonging the active regeneration cycle of a DPF

Abstract

This application discloses a control method, system, and apparatus for extending the active regeneration cycle of a DPF (Device Power Filter) to reduce the number of active regeneration cycles in a vehicle. The method includes: acquiring the accumulated carbon content of a target vehicle, wherein the target vehicle is in operation; when the accumulated carbon content is within the active regeneration trigger range, triggering a driving regeneration mode if so; determining the regeneration temperature corresponding to the accumulated carbon content, and setting the DPF inlet temperature based on the regeneration temperature; monitoring changes in the accumulated carbon content, and adjusting the DPF inlet temperature according to a correlation table between the accumulated carbon content and the regeneration temperature, until the accumulated carbon content is less than a preset value for the end of active regeneration.

Description

Technical Field

[0001] This application relates to the field of data processing, and in particular to a control method, system and apparatus for extending the active regeneration cycle of a DPF. Background Technology

[0002] To meet the China VI emission standards, diesel engines in vehicles use diesel particulate filters (DPFs) in the exhaust pipe. DPFs efficiently capture particulate matter in the exhaust gas, achieving compliance with particulate matter (PM) and particulate number (PN) requirements. As the DPF collects more and more particles, more vents become blocked, increasing DPF resistance and hindering exhaust flow. This can eventually affect fuel consumption and power. Therefore, it's necessary to increase exhaust temperature during driving to allow the accumulated carbon in the DPF to react with oxygen. This carbon-cleaning process is called on-road regeneration. If on-road regeneration fails to raise the exhaust temperature to the target value over a prolonged period, carbon cleanup becomes ineffective, and carbon continues to accumulate in the DPF. This prompts the user to stop the vehicle and manually trigger exhaust temperature management to increase the exhaust temperature and clean the carbon buildup. This method is called parking regeneration. On-road regeneration and parking regeneration are collectively referred to as active regeneration.

[0003] During active regeneration, the DPF temperature can be so high that in some areas it may even exceed reliability limits and burn through. Therefore, the amount of carbon buildup that triggers active regeneration must be controlled within a safe range. Currently, the triggering sources for both driving and parking regeneration are determined by rigorously testing the maximum amount of carbon buildup that meets exhaust temperature limits under those operating conditions. Since active regeneration raises exhaust temperatures to over 600°C, fuel consumption is significantly higher than with non-active regeneration, impacting user profits. Therefore, reducing the frequency of active regeneration and extending the DPF active regeneration cycle are urgent problems that the industry needs to solve. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides a control method, system, and apparatus for extending the active regeneration cycle of a DPF, thereby reducing the number of active regeneration cycles in a vehicle.

[0005] The technical solution provided in this application is described below:

[0006] The first aspect of this application provides a control method for extending the active regeneration cycle of a DPF, including:

[0007] Obtain the cumulative carbon content of the target vehicle, which is in operation.

[0008] When the accumulated carbon content is within the active regeneration trigger range, the driving regeneration mode is triggered.

[0009] Determine the regeneration temperature corresponding to the accumulated carbon amount, and set the DPF inlet temperature according to the regeneration temperature;

[0010] Monitor the changes in the accumulated carbon content, and adjust the DPF inlet temperature according to the correlation table between accumulated carbon content and regeneration temperature until the accumulated carbon content is less than the preset value for the end of active regeneration.

[0011] Optionally, after the target vehicle is in operation, the control method further includes: obtaining the cumulative carbon content of the target vehicle.

[0012] When the accumulated carbon content is higher than the maximum value of the active regeneration trigger range, the parking regeneration mode prompt is activated so that the user can park the vehicle and trigger the parking regeneration mode according to the parking regeneration mode prompt.

[0013] Optionally, the method further includes:

[0014] Obtain the DPF exhaust temperature limit and carbon accumulation trigger value of the target vehicle;

[0015] The vehicle model was simulated based on the DPF exhaust temperature limit and the carbon accumulation trigger value to allow the carbon accumulation of the vehicle model to decrease naturally while raising the DPF inlet temperature to maintain the DPF exhaust temperature limit, thus obtaining experimental results.

[0016] The experimental results were fitted to obtain a table showing the correlation between accumulated carbon and regeneration temperature.

[0017] Optionally, the process of performing scenario simulations on the vehicle model based on the DPF exhaust temperature limit and the accumulated carbon trigger value, so that the accumulated carbon in the vehicle model naturally decreases while the DPF inlet temperature is increased to maintain the DPF exhaust temperature limit, yields experimental results including:

[0018] When the exhaust temperature of the vehicle model is the DPF exhaust temperature limit and the accumulated carbon content of the vehicle model is at the accumulated carbon content trigger value, the first DPF inlet temperature of the vehicle model is obtained.

[0019] The vehicle model's exhaust temperature is monitored in real time as the accumulated carbon content decreases. If the exhaust temperature is lower than the first DPF exhaust temperature limit, the DPF inlet temperature is increased, and the current accumulated carbon content and DPF inlet temperature of the vehicle model are recorded to obtain experimental results.

[0020] Optionally, after the target vehicle is in operation, the method for obtaining the cumulative carbon content of the target vehicle further includes:

[0021] Obtain vehicle data of the target vehicle;

[0022] Based on the vehicle data, a correlation table between accumulated carbon content and regeneration temperature was determined.

[0023] A second aspect of this application provides a control system for extending the active regeneration cycle of a DPF, comprising:

[0024] The first acquisition unit is used to acquire the cumulative carbon content of the target vehicle, which is in operation.

[0025] The triggering unit is used to trigger the vehicle regeneration mode when the accumulated carbon amount is within the active regeneration trigger range.

[0026] The first determining unit is used to determine the regeneration temperature corresponding to the accumulated carbon amount, and to set the DPF inlet temperature according to the regeneration temperature;

[0027] The monitoring unit is used to monitor the change in the accumulated carbon content and adjust the DPF inlet temperature according to the correlation table between the accumulated carbon content and the regeneration temperature until the accumulated carbon content is less than the preset value for the end of active regeneration.

[0028] Optionally, the control system further includes:

[0029] The prompting unit is used to activate the parking regeneration mode prompt when the accumulated carbon amount is higher than the maximum value of the active regeneration trigger range, so that the user can park and trigger the parking regeneration mode according to the parking regeneration mode prompt.

[0030] Optionally, the system further includes:

[0031] The second acquisition unit is used to acquire the DPF exhaust temperature limit value and the accumulated carbon trigger value;

[0032] The scenario simulation unit is used to perform scenario simulation on the vehicle model based on the DPF exhaust temperature limit and the accumulated carbon trigger value, so that the accumulated carbon of the vehicle model naturally decreases while the DPF inlet temperature is increased to maintain the DPF exhaust temperature limit, and experimental results are obtained.

[0033] A fitting unit is used to fit the experimental results to obtain a table showing the relationship between accumulated carbon and regeneration temperature.

[0034] Optionally, the fitting unit is mainly used for:

[0035] When the exhaust temperature of the vehicle model is the DPF exhaust temperature limit and the accumulated carbon content of the vehicle model is at the accumulated carbon content trigger value, the first DPF inlet temperature of the vehicle model is obtained.

[0036] The vehicle model's exhaust temperature is monitored in real time as the accumulated carbon content decreases. If the exhaust temperature is lower than the first DPF exhaust temperature limit, the DPF inlet temperature is increased, and the current accumulated carbon content and DPF inlet temperature of the vehicle model are recorded to obtain experimental results.

[0037] Optionally, the system further includes:

[0038] The third acquisition unit is used to acquire vehicle data of the target vehicle;

[0039] The second determining unit is used to determine a correlation table between accumulated carbon content and regeneration temperature based on the vehicle data.

[0040] A third aspect of this application provides a control device for extending the active regeneration cycle of a DPF, the device comprising:

[0041] Processor, memory, input / output units, and bus;

[0042] The processor is connected to the memory, the input / output unit, and the bus;

[0043] The memory stores a program, which the processor invokes to execute the first aspect and any one of the optional methods in the first aspect.

[0044] A fourth aspect of this application provides a computer-readable storage medium on which a program is stored, which, when executed on a computer, performs the methods of the first aspect and any one of the first aspects.

[0045] As can be seen from the above technical solutions, this application has the following advantages:

[0046] This application confirms the active regeneration mode of the target vehicle based on its accumulated carbon content. By setting an active regeneration trigger range, the target vehicle has two active regeneration trigger values ​​during operation. Based on the accumulated carbon content, a correlation table between accumulated carbon content and regeneration temperature is obtained to control the DPF inlet temperature. This allows the target vehicle to increase the active regeneration trigger value to the maximum value of the active regeneration trigger range, thereby reducing the number of active regeneration triggers. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 This is a schematic flowchart of an embodiment of the control method for extending the active regeneration cycle of the DPF in this application;

[0049] Figure 2 This is a schematic flowchart of another embodiment of the control method for extending the active regeneration cycle of DPF in this application;

[0050] Figure 3This is a schematic diagram of an embodiment of the control system for extending the active regeneration cycle of the DPF in this application;

[0051] Figure 4 This is a schematic diagram of another embodiment of the control system for extending the active regeneration cycle of the DPF in this application;

[0052] Figure 5 This is a schematic diagram of an embodiment of the control device for extending the active regeneration cycle of the DPF in this application. Detailed Implementation

[0053] It should be noted that the control method for extending the active regeneration cycle of the DPF provided in this application can be applied to terminals, systems, and servers. For example, the terminal can be a smartphone, computer, tablet, smart TV, smartwatch, portable computer terminal, or a desktop computer or other fixed terminal. For ease of explanation, this application uses the terminal as the implementing entity for illustration.

[0054] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0055] Please see Figure 1 This application first provides an embodiment of a control method for extending the active regeneration cycle of a DPF, the embodiment including:

[0056] S101. Obtain the cumulative carbon content of the target vehicle, wherein the target vehicle is in operation;

[0057] Cumulative carbon content refers to the total amount of carbonaceous particulate matter emitted from diesel engine exhaust that accumulates inside the Diesel Particulate Filter (DPF). The particulate matter emitted from exhaust gases is primarily formed from hydrocarbons in incompletely burned diesel fuel. These hydrocarbons are produced during engine combustion and are emitted with the exhaust gas flow when the vehicle is running and undergoing DPF regeneration.

[0058] Diesel engines in vehicles use a diesel particulate filter (DPF) in the exhaust pipe. The DPF can efficiently capture particulate matter in the exhaust gas, achieving compliance with particulate matter (PM) and particulate number (PN) standards. As the DPF captures more and more particles, more vents become blocked, increasing DPF resistance and hindering exhaust flow. When particles accumulate to a certain level, they affect the diesel engine's fuel consumption and power. Therefore, it is necessary to increase the exhaust temperature during driving to allow the accumulated carbon in the DPF to react with oxygen. This process of cleaning accumulated carbon is called on-road regeneration.

[0059] In practice, if the exhaust temperature fails to reach the target value during prolonged on-the-go regeneration, the carbon buildup removal process will fail. The accumulated particulate matter in the DPF will cause the carbon content to continue to increase. At this point, the vehicle terminal will prompt the user to park and manually trigger exhaust temperature thermal management to increase exhaust temperature and clean up the accumulated carbon. This method is called parking regeneration. Both on-the-go and parking regeneration are collectively referred to as active regeneration.

[0060] Therefore, in the actual operation scenario based on the target vehicle, obtaining the current carbon accumulation of the target vehicle is a prerequisite for activating the vehicle's active regeneration capability. The carbon accumulation of the target vehicle is directly obtained through a sensor installed in the diesel engine. The corresponding sensor can feed back the airflow of the DPF to the terminal, so that the terminal can calculate the current carbon accumulation status of the DPF based on the obtained airflow.

[0061] S102. When the accumulated carbon amount is within the active regeneration trigger range, if so, the driving regeneration mode is triggered.

[0062] The active regeneration trigger range is a range of carbon accumulation used to determine whether the current carbon accumulation of the vehicle needs to trigger active regeneration. In practice, the active regeneration trigger value is usually a specific numerical value. However, in this embodiment, by setting the trigger value of active regeneration to the minimum value of the range, the maximum value of the range is greater than the original value used to trigger active regeneration, thereby increasing the trigger threshold of active regeneration of the vehicle.

[0063] The active regeneration trigger interval is a range consisting of the parking active regeneration trigger state as the maximum value and the driving active regeneration trigger state as the minimum value. In practice, the active regeneration trigger value will be set to a value in the interval so that the carbon accumulation of the active regeneration trigger is greater than the minimum carbon accumulation of the trigger regeneration in the current running logic, thereby achieving the purpose of delaying the trigger regeneration state.

[0064] When the active regeneration mode is triggered, whether it is driving regeneration mode or parking regeneration mode, the vehicle will reduce the carbon accumulation in the DPF by increasing the DPF inlet temperature.

[0065] S103. Determine the regeneration temperature corresponding to the accumulated carbon amount, and set the DPF inlet temperature according to the regeneration temperature;

[0066] The regeneration temperature corresponding to the accumulated carbon content is obtained by bench testing of the same model engine under simulated active operating conditions. In reality, when the accumulated carbon content of the engine is high, processing according to the fixed temperature efficiency will lead to a high internal temperature of the DPF. That is, when the accumulated carbon content is high, the regeneration mode of the vehicle is activated under driving conditions, which will cause the DPF temperature to be too high, and there is a risk of DPF burn-through. Therefore, in this application, the accumulated carbon content of the target vehicle and its corresponding DPF inlet temperature are a set of specific values ​​that correspond one-to-one. These correspondences are obtained through the aforementioned bench testing.

[0067] S104. Monitor the change in accumulated carbon content, and adjust the DPF inlet temperature according to the correlation table between accumulated carbon content and regeneration temperature until the accumulated carbon content is less than the preset value for the end of active regeneration.

[0068] After activating the regeneration mode of the target vehicle, the vehicle increases the DPF inlet temperature to heat the DPF. Once the temperature condition is reached, the accumulated carbon in the DPF is gradually decomposed by the high temperature, resulting in a decrease in the carbon content of the vehicle's DPF, which is then discharged with the exhaust gas flow. Generally, the termination condition for the regeneration mode is based on a preset exhaust flow value set by the user or feedback values ​​from other sensors. These sensors include, but are not limited to, airflow sensors, air pressure sensors, and temperature sensors, which can calculate the accumulated carbon content of the DPF. The regeneration mode ends when the feedback value of the corresponding sensor reaches or falls below the average value of the target vehicle's driving conditions. Specifically, the accumulated carbon content of the DPF varies depending on the vehicle model. Generally, the termination preset value is set to an extremely low value. For example, if the driving regeneration trigger condition is that the accumulated carbon content reaches 36 grams, the termination condition requires the accumulated carbon content of the target vehicle to be below 5 grams.

[0069] The application confirms the active regeneration mode of the target vehicle based on its accumulated carbon content. By setting an active regeneration trigger range, the target vehicle has two active regeneration trigger values ​​during operation. Based on the accumulated carbon content, a correlation table between accumulated carbon content and regeneration temperature is obtained to control the DPF inlet temperature. This causes the target vehicle to increase the active regeneration trigger value to the maximum value of the active regeneration trigger range, thereby reducing the number of active regeneration triggers.

[0070] Please see Figure 2 This application provides another embodiment of a control method for extending the active regeneration cycle of a DPF, which includes:

[0071] S201. Obtain the vehicle data of the target vehicle;

[0072] The vehicle data of the target vehicle is used to determine the engine model corresponding to the target vehicle, i.e. the load status and driving status of the target vehicle. When the terminal obtains data related to the target vehicle, it needs to retrieve the relevant parameters of the target vehicle based on the vehicle data.

[0073] Specifically, when the terminal obtains the vehicle data of the target vehicle, the terminal first needs to determine the actual parameters of the current vehicle engine based on the content of the vehicle data, and obtain the preset value corresponding to the engine based on the actual engine parameters. However, under normal circumstances, these data will be stored in the driving terminal first. But in actual situations, the vehicle data fed back by the target vehicle during operation will be affected by other factors such as usage time or road conditions. Therefore, obtaining the real-time data of the target vehicle can obtain more accurate parameters for subsequent related data determination.

[0074] S202. Determine the correlation table between accumulated carbon content and regeneration temperature based on the vehicle data;

[0075] After determining the vehicle data of the target vehicle, the terminal will obtain a correlation table between the accumulated carbon content and the regeneration temperature based on the vehicle data. This correlation table is determined by comparing the feedback data obtained from the vehicle data with data in the vehicle network database. It is based on relevant values ​​such as the engine model and displacement of the target vehicle. In the actual data experiment on the correlation table between accumulated carbon content and regeneration temperature, the experiment is conducted for each engine model. That is, for different engine models, a simulation test is required to obtain the correlation between accumulated carbon content and regeneration temperature for that engine. Steps S203 to S205 are based on the process of establishing the correlation table between accumulated carbon content and regeneration temperature of the target vehicle.

[0076] S203. Obtain the DPF exhaust temperature limit and carbon accumulation trigger value of the target vehicle;

[0077] The DPF exhaust temperature limit is a physical characteristic of the vehicle's DPF, which is calibrated at the engine factory. This means that the DPF exhaust temperature limit is a specific data that can be directly obtained, representing the highest operating temperature that the DPF can receive. The carbon accumulation trigger value is generally calibrated externally, meaning that the actual carbon accumulation trigger value of the vehicle is adaptively adjusted according to the actual vehicle operating environment and conditions. However, in actual use cases, the terminal can directly obtain the DPF exhaust temperature limit and carbon accumulation trigger value from the target vehicle's vehicle data.

[0078] The exhaust temperature limit of a DPF is the limit temperature at which it can be regenerated within its operating temperature range. Operating the DPF within the temperature range corresponding to the exhaust temperature limit ensures that it can achieve efficient regeneration while maintaining stable operation.

[0079] Among them, the cumulative carbon amount trigger value is the value within the active regeneration trigger range.

[0080] S204. Monitor the change in exhaust temperature of the vehicle model as the accumulated carbon content decreases in real time. If the exhaust temperature of the vehicle model is lower than the first DPF exhaust temperature limit, increase the DPF inlet temperature and record the current accumulated carbon content and DPF inlet temperature of the vehicle model to obtain experimental results.

[0081] The vehicle model was simulated based on the DPF exhaust temperature limit and the carbon accumulation trigger value to allow the carbon accumulation of the vehicle model to decrease naturally while raising the DPF inlet temperature to maintain the DPF exhaust temperature limit, thus obtaining experimental results.

[0082] Specifically, after obtaining the exhaust temperature limit and carbon accumulation trigger value (used to trigger the regeneration mode) from the vehicle data of the target vehicle, it is necessary to conduct a simulation experiment based on the obtained DPF exhaust temperature limit and carbon accumulation trigger value to obtain the correlation table between the carbon accumulation and regeneration temperature of the target vehicle.

[0083] For example, given a target vehicle's DPF exhaust temperature limit of 950℃ and an active regeneration trigger value of 57 grams of accumulated carbon, these two specific values ​​are input into the model to simulate a driving regeneration scenario. As the simulation progresses, the accumulated carbon of the target vehicle decreases. When the accumulated carbon decreases, the DPF inlet temperature may not be able to guarantee that the internal exhaust temperature of the DPF reaches the 950℃ limit. Therefore, it is necessary to raise the DPF inlet temperature and record the accumulated carbon data at each temperature increase to obtain the DPF inlet temperature required for the corresponding accumulated carbon, i.e., a set of data. Similarly, after the driving regeneration simulation ends, the same simulation is performed on the target vehicle's parking regeneration state to obtain a table relating the accumulated carbon and regeneration temperature for parking regeneration.

[0084] The target vehicle's data shows that under normal circumstances, the carbon accumulation trigger value for DPF regeneration during driving is 36 grams, corresponding to a DPF inlet temperature of 600℃, and this state will be maintained at a DPF inlet temperature of 600℃ until the regeneration mode ends.

[0085] The experimental data obtained from the simulation test according to this scheme are as follows: the DPF inlet temperature is 500℃ when the accumulated carbon amount is 57 grams. When the accumulated carbon amount drops to 36 grams, the corresponding DPF inlet temperature also reaches 600℃. However, as the accumulated carbon amount continues to decrease, the DPF inlet temperature will rise accordingly. For example, when the accumulated carbon amount drops to 31℃, the DPF inlet temperature reaches 620℃.

[0086] Therefore, the regeneration time required for regeneration in this embodiment is the same as the time required to maintain the DPF inlet temperature at 600°C under normal circumstances with a carbon accumulation of 36 grams as the trigger value. Thus, the regeneration control method that adjusts the DPF inlet temperature according to the carbon accumulation as the calibration parameter based on the data obtained from the simulation experiment can complete the regeneration of 57 grams of carbon accumulation in the same time, achieving the purpose of delaying the triggering of DPF regeneration.

[0087] S205. Fit the experimental results to obtain a table showing the relationship between accumulated carbon and regeneration temperature.

[0088] During simulated regeneration, the initial carbon accumulation value for parking regeneration is higher than that for driving regeneration. Therefore, the experimental results include two tables relating carbon accumulation to DPF inlet temperature for both driving and parking regeneration modes. The two experimental results are fitted to ensure that the corresponding carbon accumulation and regeneration temperature tables can be found when the vehicle is regenerated in both driving and parking states.

[0089] S206. Obtain the cumulative carbon content of the target vehicle, wherein the target vehicle is in operation;

[0090] Step S206 in this embodiment is similar to step S101 in the previous embodiment, and will not be described in detail here.

[0091] S207. When the exhaust temperature of the vehicle model is the DPF exhaust temperature limit value and the accumulated carbon content of the vehicle model is at the accumulated carbon content trigger value, the first DPF inlet temperature of the vehicle model is obtained.

[0092] In actual scenario simulation, there is a specific accumulated carbon amount data under driving conditions, which corresponds to the current accumulated carbon amount of the target vehicle. The first DPF inlet temperature obtained by using this accumulated carbon amount as an index is the first DPF inlet temperature required at the moment.

[0093] S208. When the accumulated carbon amount is higher than the maximum value of the active regeneration trigger range, the parking regeneration mode prompt is activated so that the user can park the vehicle and trigger the parking regeneration mode according to the parking regeneration mode prompt.

[0094] Specifically, if a vehicle fails to perform regeneration for an extended period or if regeneration is incomplete, the accumulated carbon level cannot be reduced. In this case, the accumulated carbon level will continue to accumulate because it cannot be eliminated. If the accumulated carbon level of the target vehicle exceeds the maximum value of the active regeneration trigger range due to this situation, the driver should be reminded to park the vehicle as soon as possible to actively activate the parking regeneration mode in order to ensure safety. The parking regeneration mode and the driving regeneration mode are collectively referred to as the active regeneration mode.

[0095] S209. When the accumulated carbon amount is within the active regeneration trigger range, if so, the driving regeneration mode is triggered.

[0096] S210. Determine the regeneration temperature corresponding to the accumulated carbon amount, and set the DPF inlet temperature according to the regeneration temperature;

[0097] S211. Monitor the change in the accumulated carbon amount, and adjust the DPF inlet temperature according to the correlation table between accumulated carbon amount and regeneration temperature until the accumulated carbon amount is less than the preset value for the end of active regeneration.

[0098] Steps S209 to S211 in this embodiment are similar to steps S102 to S104 in the previous embodiment, and will not be described in detail here.

[0099] The control method for extending the active regeneration cycle of DPF in the embodiments of this application has been described in detail above. The control system and device for extending the active regeneration cycle of DPF will be described in detail below.

[0100] Please see Figure 3 This application provides an embodiment of a control system for extending the active regeneration cycle of a DPF, which includes:

[0101] The first acquisition unit 301 is used to acquire the cumulative carbon content of the target vehicle, which is in operation.

[0102] Trigger unit 302 is used to trigger the vehicle regeneration mode when the accumulated carbon amount is within the active regeneration trigger range.

[0103] The first determining unit 303 is used to determine the regeneration temperature corresponding to the accumulated carbon amount, and set the DPF inlet temperature according to the regeneration temperature;

[0104] The monitoring unit 304 is used to monitor the change in the accumulated carbon amount and adjust the DPF inlet temperature according to the correlation table between the accumulated carbon amount and the regeneration temperature until the accumulated carbon amount is less than the preset value for the end of active regeneration.

[0105] In this embodiment, the functions of each unit are the same as those described above. Figure 1 The steps in the illustrated embodiments are the same and will not be repeated here.

[0106] Please see Figure 4 This application provides another embodiment of a control system for extending the active regeneration cycle of a DPF, which includes:

[0107] The third acquisition unit 401 is used to acquire vehicle data of the target vehicle;

[0108] The second determining unit 402 is used to determine a correlation table between accumulated carbon content and regeneration temperature based on the vehicle data.

[0109] The second acquisition unit 403 is used to acquire the DPF exhaust temperature limit value and the accumulated carbon trigger value;

[0110] The scenario simulation unit 404 is used to perform scenario simulation on the vehicle model according to the DPF exhaust temperature limit value and the accumulated carbon trigger value, so that the accumulated carbon of the vehicle model naturally decreases while the DPF inlet temperature is increased to maintain the DPF exhaust temperature limit value, and the experimental results are obtained.

[0111] Fitting unit 405 is used to fit the experimental results to obtain a table relating carbon accumulation to regeneration temperature.

[0112] The first acquisition unit 406 is used to acquire the cumulative carbon content of the target vehicle, which is in operation.

[0113] The prompting unit 407 is used to activate the parking regeneration mode prompt when the accumulated carbon amount is higher than the maximum value of the active regeneration trigger range, so that the user can park and trigger the parking regeneration mode according to the parking regeneration mode prompt.

[0114] Trigger unit 408 is used to trigger the vehicle regeneration mode when the accumulated carbon amount is within the active regeneration trigger range.

[0115] The first determining unit 409 is used to determine the regeneration temperature corresponding to the accumulated carbon amount, and set the DPF inlet temperature according to the regeneration temperature;

[0116] The monitoring unit 410 is used to monitor the change in the accumulated carbon amount and adjust the DPF inlet temperature according to the correlation table between the accumulated carbon amount and the regeneration temperature until the accumulated carbon amount is less than the preset value for the end of active regeneration.

[0117] In this application, the fitting unit 405 is mainly used for:

[0118] When the exhaust temperature of the vehicle model is the DPF exhaust temperature limit and the accumulated carbon content of the vehicle model is at the accumulated carbon content trigger value, the first DPF inlet temperature of the vehicle model is obtained.

[0119] The vehicle model's exhaust temperature is monitored in real time as the accumulated carbon content decreases. If the exhaust temperature is lower than the first DPF exhaust temperature limit, the DPF inlet temperature is increased, and the current accumulated carbon content and DPF inlet temperature of the vehicle model are recorded to obtain experimental results.

[0120] In this embodiment, the functions of each unit are the same as those described above. Figure 2 The steps in the illustrated embodiments are the same and will not be repeated here.

[0121] Please see Figure 5 This application provides another embodiment of a control device for extending the active regeneration cycle of a DPF, including:

[0122] Processor 501, memory 502, input / output unit 503, bus 504;

[0123] The processor 501 is connected to the memory 502, the input / output unit 503 and the bus 504;

[0124] The processor 501 specifically executes... Figures 1 to 2 The specific operations corresponding to the steps in the method will not be elaborated here.

[0125] This application also relates to a computer-readable storage medium on which a program is stored, characterized in that, when the program is run on a computer, it causes the computer to perform any of the methods described above.

[0126] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0127] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0128] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0129] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0130] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

Claims

1. A control method for extending the active regeneration cycle of a DPF, characterized in that, The method includes: Obtain the DPF exhaust temperature limit and carbon accumulation trigger value of the target vehicle; The vehicle model was simulated based on the DPF exhaust temperature limit and the carbon accumulation trigger value to allow the carbon accumulation of the vehicle model to decrease naturally while raising the DPF inlet temperature to maintain the DPF exhaust temperature limit, thus obtaining experimental results. The experimental results were fitted to obtain a table showing the correlation between accumulated carbon content and regeneration temperature. Obtain the cumulative carbon content of the target vehicle, which is in operation. When the accumulated carbon content is within the active regeneration trigger range, the driving regeneration mode is triggered. Determine the regeneration temperature corresponding to the accumulated carbon amount, and set the DPF inlet temperature according to the regeneration temperature; Monitor the change in accumulated carbon and adjust the DPF inlet temperature according to the correlation table between accumulated carbon and regeneration temperature until the accumulated carbon is less than the preset value for the end of active regeneration. The process involves simulating a scenario using a vehicle model based on the DPF exhaust temperature limit and the accumulated carbon trigger value. This allows the accumulated carbon in the vehicle model to decrease naturally while simultaneously increasing the DPF inlet temperature to maintain the DPF exhaust temperature limit. The experimental results include: When the exhaust temperature of the vehicle model is the DPF exhaust temperature limit and the accumulated carbon content of the vehicle model is at the accumulated carbon content trigger value, the first DPF inlet temperature of the vehicle model is obtained. The vehicle model's exhaust temperature is monitored in real time as the accumulated carbon content decreases. If the exhaust temperature is lower than the first DPF exhaust temperature limit, the DPF inlet temperature is increased, and the current accumulated carbon content and DPF inlet temperature of the vehicle model are recorded to obtain experimental results.

2. The control method according to claim 1, characterized in that, The control method further includes, after the target vehicle is in operation, acquiring the cumulative carbon content of the target vehicle: When the accumulated carbon content is higher than the maximum value of the active regeneration trigger range, the parking regeneration mode prompt is activated so that the user can park the vehicle and trigger the parking regeneration mode according to the parking regeneration mode prompt.

3. The control method according to claim 1, characterized in that, The method for obtaining the cumulative carbon content of the target vehicle, after the target vehicle is in operation, further includes: Obtain vehicle data of the target vehicle; Based on the vehicle data, a correlation table between accumulated carbon content and regeneration temperature was determined.

4. A control system for extending the active regeneration cycle of a DPF, characterized in that, The system includes: The second acquisition unit is used to acquire the DPF exhaust temperature limit value and the accumulated carbon trigger value; The scenario simulation unit is used to perform scenario simulation on the vehicle model based on the DPF exhaust temperature limit and the accumulated carbon trigger value, so that the accumulated carbon of the vehicle model naturally decreases while the DPF inlet temperature is increased to maintain the DPF exhaust temperature limit, and experimental results are obtained. A fitting unit is used to fit the experimental results to obtain a table showing the relationship between accumulated carbon content and regeneration temperature. The first acquisition unit is used to acquire the cumulative carbon content of the target vehicle, which is in operation. The triggering unit is used to trigger the vehicle regeneration mode when the accumulated carbon amount is within the active regeneration trigger range. The first determining unit is used to determine the regeneration temperature corresponding to the accumulated carbon amount, and to set the DPF inlet temperature according to the regeneration temperature; The monitoring unit is used to monitor the change in the accumulated carbon content and adjust the DPF inlet temperature according to the correlation table between the accumulated carbon content and the regeneration temperature until the accumulated carbon content is less than the preset value for the end of active regeneration. The fitting unit is mainly used for: When the exhaust temperature of the vehicle model is the DPF exhaust temperature limit and the accumulated carbon content of the vehicle model is at the accumulated carbon content trigger value, the first DPF inlet temperature of the vehicle model is obtained. The vehicle model's exhaust temperature is monitored in real time as the accumulated carbon content decreases. If the exhaust temperature is lower than the first DPF exhaust temperature limit, the DPF inlet temperature is increased, and the current accumulated carbon content and DPF inlet temperature of the vehicle model are recorded to obtain experimental results.

5. The control system according to claim 4, characterized in that, The control system further includes: The prompting unit is used to activate the parking regeneration mode prompt when the accumulated carbon amount is higher than the maximum value of the active regeneration trigger range, so that the user can park and trigger the parking regeneration mode according to the parking regeneration mode prompt.

6. A control device for extending the active regeneration cycle of a DPF, characterized in that, The device includes: Processor, memory, input / output units, and bus; The processor is connected to the memory, the input / output unit, and the bus; The memory stores a program, which the processor invokes to perform the method as described in any one of claims 1 to 3.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium contains a program that, when executed on a computer, performs the method as described in any one of claims 1 to 3.

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