Control method, system and device for prolonging active regeneration cycle of DPF

Abstract

The invention discloses a control method, system and device for prolonging the active regeneration period of a DPF. The control method, system and device are used for reducing the number of active regeneration times of a vehicle. The method comprises the following steps: acquiring the carbon accumulation amount of a target vehicle, wherein the target vehicle is in a running state; when the carbon accumulation amount is within the active regeneration triggering interval, triggering a driving regeneration mode if the carbon accumulation amount is within the active regeneration triggering interval; the regeneration temperature corresponding to the carbon accumulation amount is determined, and the DPF inlet temperature is set according to the regeneration temperature; and the change of the carbon accumulation amount is monitored, and the inlet temperature of the DPF is adjusted according to a carbon accumulation amount and regeneration temperature association table until the carbon accumulation amount is smaller than an active regeneration ending preset value.

Description

Technical Field

[0001] The present application relates to the field of data processing, and in particular to a control method, system and device for extending the active regeneration period of a DPF. Background Art

[0002] In order to meet the requirements of National VI regulations, vehicle diesel engines use a particulate filter (DPF) in the exhaust pipe. The DPF can efficiently capture particulate matter in the exhaust gas to achieve compliance with particles (PM) and particle number (PN). The more particles captured by the DPF, the more air holes are blocked, the greater the DPF resistance is, resulting in poor exhaust, which to a certain extent will affect the fuel consumption and power of the diesel engine. 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 the accumulated carbon is called driving regeneration. If the exhaust temperature cannot reach the target value for a long time during driving regeneration, the cleaning of accumulated carbon fails, and the carbon in the DPF continues to accumulate, the user will be prompted to stop the car and manually trigger the exhaust temperature thermal management to increase the exhaust temperature and clean the accumulated carbon. This method is called parking regeneration. Driving regeneration and parking regeneration are collectively referred to as active regeneration.

[0003] During active regeneration, the temperature of the DPF in some areas may even exceed the reliability limit and burn through the DPF. Therefore, the accumulated carbon volume that triggers active regeneration must be controlled within a safe range. Currently, the trigger sources for driving regeneration and parking regeneration are determined by strictly testing the maximum accumulated carbon volume that meets the exhaust temperature limit under the working conditions. Since active regeneration requires the exhaust temperature to be raised to above 600°C, the fuel consumption is much higher than that of non-active regeneration, which affects the user's benefits. Therefore, reducing the number of active regenerations and extending the DPF active regeneration cycle are problems that the industry urgently needs to solve. Summary of the invention

[0004] In order to solve the above technical problems, the present application provides a control method, system and device for extending the DPF active regeneration period, so as to reduce the number of active regeneration times of the vehicle.

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

[0006] The first aspect of the present application provides a control method for extending the active regeneration period of a DPF, comprising:

[0007] Obtaining the accumulated carbon amount of a target vehicle, where the target vehicle is in a running state;

[0008] When the accumulated carbon amount is within the active regeneration triggering interval, the driving regeneration mode is triggered;

[0009] Determining a regeneration temperature corresponding to the carbon accumulation amount, and setting a DPF inlet temperature according to the regeneration temperature;

[0010] Monitor the change of the accumulated carbon amount, and adjust the DPF inlet temperature according to the association table between the accumulated carbon amount and the regeneration temperature until the accumulated carbon amount is less than the preset value for ending the active regeneration.

[0011] Optionally, the obtaining of the accumulated carbon amount of the target vehicle, after the target vehicle is in a running state, the control method further includes:

[0012] When the accumulated carbon amount is higher than the maximum value of the active regeneration triggering interval, the parking regeneration mode prompt is activated so that the user parks according to the parking regeneration mode prompt and triggers the parking regeneration mode.

[0013] Optionally, the method further includes:

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

[0015] A scenario simulation is performed on a vehicle model according to the PDF exhaust temperature limit value and the accumulated carbon amount trigger value, so that the accumulated carbon amount of the vehicle model decreases naturally while the PDF inlet temperature is increased to maintain the PDF exhaust temperature limit value, and an experimental result is obtained;

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

[0017] Optionally, the scenario simulation of the vehicle model is performed according to the PDF exhaust temperature limit value and the accumulated carbon amount trigger value, so that the accumulated carbon amount of the vehicle model naturally decreases while the PDF inlet temperature is increased to maintain the PDF exhaust temperature limit value, and the experimental results obtained include:

[0018] When the exhaust temperature value of the vehicle model is the DPF exhaust temperature limit value and the accumulated carbon amount of the vehicle model is at the accumulated carbon amount trigger value, acquiring a first PDF inlet temperature of the vehicle model;

[0019] The exhaust temperature value change of the vehicle model is monitored in real time when the carbon accumulation of the vehicle model decreases. If the exhaust temperature value of the vehicle model is lower than the first DPF exhaust temperature limit value, the DPF inlet temperature is increased, and the current carbon accumulation and DPF inlet temperature of the vehicle model are recorded to obtain experimental results.

[0020] Optionally, the method further comprises: obtaining the accumulated carbon amount of the target vehicle after the target vehicle is in a running state;

[0021] Acquiring vehicle data of the target vehicle;

[0022] A carbon accumulation amount and regeneration temperature association table is determined according to the vehicle data.

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

[0024] A first acquisition unit is used to acquire the accumulated carbon amount of a target vehicle, where the target vehicle is in a running state;

[0025] A trigger unit, used for triggering a driving regeneration mode when the accumulated carbon amount is within the active regeneration triggering interval;

[0026] A first determination unit, used to determine a regeneration temperature corresponding to the carbon accumulation amount, and set a DPF inlet temperature according to the regeneration temperature;

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

[0028] Optionally, the control system further includes:

[0029] The prompt 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 interval, so that the user parks according to the parking regeneration mode prompt and triggers the parking regeneration mode.

[0030] Optionally, the system further includes:

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

[0032] A scenario simulation unit, used to perform scenario simulation on a vehicle model according to the PDF exhaust temperature limit value and the accumulated carbon trigger value, so that the accumulated carbon of the vehicle model decreases naturally while the PDF inlet temperature is increased to maintain the PDF exhaust temperature limit value, and obtain an experimental result;

[0033] The fitting unit is used to fit the experimental results to obtain a correlation table between the accumulated carbon amount and the regeneration temperature.

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

[0035] When the exhaust temperature value of the vehicle model is the DPF exhaust temperature limit value and the accumulated carbon amount of the vehicle model is at the accumulated carbon amount trigger value, acquiring a first PDF inlet temperature of the vehicle model;

[0036] The exhaust temperature value change of the vehicle model is monitored in real time when the carbon accumulation of the vehicle model decreases. If the exhaust temperature value of the vehicle model is lower than the first DPF exhaust temperature limit value, the DPF inlet temperature is increased, and the current carbon accumulation and DPF inlet temperature of the vehicle model are recorded to obtain experimental results.

[0037] Optionally, the system further includes:

[0038] A third acquisition unit, used to acquire vehicle data of the target vehicle;

[0039] The second determination unit is used to determine a correlation table between the accumulated carbon amount and the regeneration temperature according to the vehicle data.

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

[0041] Processor, memory, input-output unit, and bus;

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

[0043] The memory stores a program, and the processor calls the program to execute the first aspect and any optional method in the first aspect.

[0044] A fourth aspect of the present application provides a computer-readable storage medium, on which a program is stored. When the program is executed on a computer, the program executes the first aspect and any optional method in the first aspect.

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

[0046] The present application confirms the active regeneration mode of the target vehicle according to the accumulated carbon amount of the target vehicle, and sets the active regeneration trigger interval so that the target vehicle has two active regeneration trigger values ​​during operation, thereby obtaining the accumulated carbon amount and the regeneration temperature association table according to the accumulated carbon amount to control the PDF inlet temperature, and then the target vehicle increases the active regeneration trigger value to the maximum value of the active regeneration trigger interval, thereby achieving the purpose of reducing the number of active regeneration triggers by increasing the active regeneration trigger value. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solution in the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0048] Figure 1 A flow chart of an embodiment of a control method for extending the active regeneration period of DPF in the present application;

[0049] Figure 2 This is a flow chart of another embodiment of a control method for extending the active regeneration period of a DPF in the present application;

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

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

[0052] Figure 5 This is a schematic diagram of the structure of an embodiment of a control device for extending the active regeneration period of DPF in the present application. DETAILED DESCRIPTION

[0053] It should be noted that the control method for extending the active regeneration period of DPF provided in the present application can be applied to a terminal, a system, or a server. For example, the terminal can be a smart phone or a computer, a tablet computer, a smart TV, a smart watch, a portable computer terminal, or a fixed terminal such as a desktop computer. For the convenience of explanation, the present application uses the terminal as an example for explanation.

[0054] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0055] See also Figure 1 The present application first provides an embodiment of a control method for extending the active regeneration period of a DPF, the embodiment comprising:

[0056] S101, obtaining the accumulated carbon amount of a target vehicle, where the target vehicle is in a running state;

[0057] The accumulated carbon refers to the total amount of carbonaceous particulate matter accumulated inside the Diesel Particulate Filter (DPF) from diesel engine exhaust. The particulate matter generated by exhaust emissions is mainly formed by hydrocarbons in incompletely burned diesel, which are generated during the engine combustion process and are discharged with the exhaust gas flow when the vehicle is running for PDF regeneration.

[0058] The diesel engine of the car uses a particulate filter (DPF) in the exhaust pipe. The DPF can efficiently capture particulate matter in the exhaust gas to achieve compliance of particulate matter (PM) and particle number (PN). As more and more particles are captured by the DPF, more air holes are blocked, and the DPF resistance increases, resulting in poor exhaust. When the particles accumulate to a certain extent, it will affect the fuel consumption and power of the diesel engine. Therefore, it is necessary to increase the exhaust temperature during driving to make the accumulated carbon in the DPF react with oxygen. This process of cleaning the accumulated carbon is called driving regeneration.

[0059] In actual situations, if the exhaust temperature cannot reach the target value during driving regeneration for a long time, it will lead to the failure of cleaning the accumulated carbon. The accumulated particles in the DPF will cause the amount of carbon in the PDF to continue to accumulate. At this time, the vehicle terminal will prompt the user to park the vehicle and manually trigger the exhaust temperature thermal management to improve the exhaust temperature and clean the accumulated carbon. This method is called parking regeneration. Driving regeneration 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 the sensor installed in the diesel engine. The corresponding sensor can feed back the airflow flow of PDF to the terminal, so that the terminal can calculate the carbon accumulation state of the current PDF based on the obtained airflow flow.

[0061] S102, when the accumulated carbon amount is within the active regeneration triggering interval, triggering the driving regeneration mode;

[0062] The active regeneration trigger interval is a carbon accumulation interval used to determine whether the vehicle's current carbon accumulation needs to trigger active regeneration. In actual situations, the value of the active regeneration trigger is generally a specific value, but in the embodiment of the present application, by setting the trigger value of active regeneration to the minimum value of the interval, the maximum value of the interval 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 an interval with the parking active regeneration trigger state as the maximum value and the driving active regeneration trigger state as the minimum value. In actual situations, the trigger value of active regeneration will be set to a value in the interval so that the accumulated carbon amount triggered by the active regeneration is greater than the minimum value of the accumulated carbon amount for triggering regeneration in the current operating logic, thereby achieving the purpose of delaying the triggering of the 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 PDF carbon accumulation by increasing the PDF inlet temperature.

[0065] S103, determining a regeneration temperature corresponding to the carbon accumulation amount, and setting a DPF inlet temperature according to the regeneration temperature;

[0066] The regeneration temperature corresponding to the carbon accumulation is obtained by conducting bench tests on the same model engine simulating active operation in a mature state. In actual situations, when the carbon accumulation of the engine is high, processing according to a fixed temperature efficiency will result in a high internal temperature of the DPF. That is, when the carbon accumulation is high, turning on the vehicle's regeneration mode under driving conditions will cause the DPF temperature to be too high, and there is a risk of DPF burnout. Therefore, in this application, the carbon accumulation of the target vehicle and its corresponding DPF inlet temperature are a set of one-to-one corresponding specific values, and these correspondences are obtained through the aforementioned bench tests.

[0067] S104, monitoring the change of the accumulated carbon amount, and adjusting the DPF inlet temperature according to a correlation table between the accumulated carbon amount and the regeneration temperature, until the accumulated carbon amount is less than a preset value for ending active regeneration.

[0068] After activating the regeneration state of the target vehicle, the vehicle will increase the DPF inlet temperature to heat up the DPF. After reaching the temperature condition, the accumulated carbon in the DPF will be gradually decomposed according to the high temperature, so that the carbon content of the vehicle's DPF is reduced and discharged with the exhaust gas flow. In general, the end condition of the regeneration mode is the preset exhaust flow value or the feedback value of other sensors set according to user needs. These sensors include but are not limited to: air flow sensor, air pressure sensor and temperature sensor, etc., which can calculate the value of DPF carbon accumulation. The regeneration mode ends when the feedback value of the corresponding sensor reaches the average value of the driving state of the target vehicle or a lower value. Specifically, the value of the DPF carbon accumulation varies according to the vehicle model. In general, the end preset value is set to an extremely low value. For example, the driving regeneration trigger condition is to end the regeneration when the accumulated carbon reaches 36 grams. The starting condition requires that the accumulated carbon of the target vehicle is less than 5 grams.

[0069] The application confirms the active regeneration mode of the target vehicle according to the accumulated carbon amount of the target vehicle, and sets the active regeneration trigger interval so that the target vehicle has two active regeneration trigger values ​​during operation, thereby obtaining the accumulated carbon amount and the regeneration temperature correlation table based on the accumulated carbon amount to control the PDF inlet temperature, thereby causing the target vehicle to increase the active regeneration trigger value to the maximum value of the active regeneration trigger interval, thereby reducing the number of active regeneration triggers by increasing the active regeneration trigger value.

[0070] See also Figure 2 The present application provides another embodiment of a control method for extending a DPF active regeneration period, the embodiment comprising:

[0071] S201, acquiring 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, that is, 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 corresponding 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 values ​​corresponding to the engine based on the actual parameters of the engine. However, under normal circumstances, these data will be stored in the driving terminal first. However, 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 real-time data of the target vehicle can obtain more accurate parameters for subsequent related data determination.

[0074] S202, determining a correlation table between accumulated carbon amount and regeneration temperature according to the vehicle data;

[0075] After determining the vehicle data of the target vehicle, the terminal will obtain the association table of the accumulated carbon amount and the regeneration temperature according to the vehicle data. The association table is determined by comparing the feedback data obtained from the vehicle data in the vehicle networking database, and is based on the relevant values ​​of the engine model and displacement of the target vehicle. When the data experiment is actually carried out on the association table of the accumulated carbon amount and the regeneration temperature, the experimental process is carried out for each model of engine, that is, for different models of engines, a simulation test is required to obtain the association between the accumulated carbon amount and the regeneration temperature of the engine, wherein steps S203 to S205 are the process of establishing the association table of the accumulated carbon amount and the regeneration temperature based on the target vehicle.

[0076] S203, obtaining a DPF exhaust temperature limit value and a carbon accumulation trigger value of the target vehicle;

[0077] The DPF exhaust temperature limit value is a physical property of the vehicle's DPF, which has been calibrated when the engine leaves the factory. That is, the DPF exhaust temperature limit value is a specific data that can be directly obtained, indicating the maximum operating temperature that the DPF can accept. The carbon accumulation trigger value is generally calibrated externally, that is, the actual carbon accumulation trigger value of the vehicle will be adaptively adjusted according to the actual vehicle operating environment and working conditions. However, in actual usage scenarios, the terminal can directly obtain the DPF exhaust temperature limit value and the carbon accumulation trigger value from the vehicle data of the target vehicle.

[0078] The exhaust temperature limit of the DPF is the limit temperature for regeneration within the operating temperature range of the DPF. Operating the DPF within the temperature corresponding to the exhaust temperature limit can ensure that the DPF can achieve efficient regeneration while working stably.

[0079] The accumulated carbon trigger value is a value within the active regeneration trigger range.

[0080] S204. Real-time monitoring of the change in the exhaust temperature value of the vehicle model when the accumulated carbon amount of the vehicle model decreases. If the exhaust temperature value of the vehicle model is lower than the first DPF exhaust temperature limit value, the DPF inlet temperature is increased, and the current accumulated carbon amount and DPF inlet temperature of the vehicle model are recorded to obtain experimental results.

[0081] A scenario simulation is performed on a vehicle model according to the PDF exhaust temperature limit value and the accumulated carbon amount trigger value, so that the accumulated carbon amount of the vehicle model decreases naturally while the PDF inlet temperature is increased to maintain the PDF exhaust temperature limit value, and an experimental result is obtained;

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

[0083] For example: when the DPF exhaust temperature limit of the target vehicle is 950°C and the active regeneration trigger value is that the accumulated carbon of the target vehicle reaches 57 grams, the above two specific values ​​are input into the model to simulate the 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 ensure that the DPF internal exhaust temperature reaches the limit value of 950°C. Therefore, it is necessary to increase the DPF inlet temperature, record the accumulated carbon data at each temperature increase, and obtain the DPF inlet temperature required for the corresponding accumulated carbon, that is, a set of data. Similarly, after the simulation of driving regeneration is completed, the parking regeneration state of the target vehicle is simulated in the same way to obtain the corresponding accumulated carbon and regeneration temperature association table for parking regeneration.

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

[0085] The test data obtained by the simulation test according to this scheme changes as follows: the DPF inlet temperature corresponding to the carbon accumulation of 57 grams is 500°C. When the carbon accumulation drops to 36 grams, the corresponding DPF inlet temperature also reaches 600°C. However, as the carbon accumulation continues to decrease, the DPF inlet temperature will rise accordingly. For example, when the carbon accumulation drops to 31°C, the DPF inlet temperature reaches 620°C.

[0086] Therefore, the regeneration time required for regeneration in the embodiment of the present application is the same as the time required to maintain the DPF inlet temperature at 600°C with the accumulated carbon amount of 36 grams as the trigger value under normal circumstances. As a result, the regeneration control method of adjusting the DPF inlet temperature accordingly with the accumulated carbon amount as the calibration parameter based on the data obtained from the simulation experiment can complete the regeneration of 57 grams of accumulated carbon in the same time, thereby achieving the purpose of delayed triggering of DPF regeneration.

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

[0088] During simulated regeneration, the starting value of the accumulated carbon amount in parking regeneration is higher than that in driving regeneration. Therefore, the experimental results include two correlation tables of accumulated carbon amount and DPF inlet temperature for driving regeneration mode and parking regeneration mode. The two experimental results obtained are fitted to meet the requirement that the corresponding correlation table of accumulated carbon amount and regeneration temperature can be found when the vehicle is regenerated in driving state and in parking state.

[0089] S206, obtaining the accumulated carbon amount of a target vehicle, where the target vehicle is in a running state;

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

[0091] S207, when the exhaust temperature value of the vehicle model is the DPF exhaust temperature limit value and the accumulated carbon amount of the vehicle model is at the accumulated carbon amount trigger value, acquiring a first PDF inlet temperature of the vehicle model;

[0092] When the actual scenario simulation is performed, there is a specific cumulative carbon amount data under the driving state, that is, the current cumulative carbon amount corresponding to the target vehicle. The PDF inlet temperature obtained by taking the cumulative carbon amount as the index is the first PDF inlet temperature required by you.

[0093] S208, when the accumulated carbon amount is higher than the maximum value of the active regeneration triggering interval, activating the parking regeneration mode prompt, so that the user parks according to the parking regeneration mode prompt and triggers the parking regeneration mode;

[0094] Specifically, if the vehicle does not perform regeneration for a long time or the regeneration is incomplete, the accumulated carbon amount cannot be reduced. In this case, the accumulated carbon amount will continue to accumulate because it cannot be eliminated. When the accumulated carbon amount of the target vehicle is greater than the maximum value of the active regeneration trigger interval due to this situation, in order to ensure safety, the driver needs to be reminded to park as soon as possible and actively start the parking regeneration mode. 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 triggering interval, triggering the driving regeneration mode;

[0096] S210, determining a regeneration temperature corresponding to the carbon accumulation amount, and setting a DPF inlet temperature according to the regeneration temperature;

[0097] S211, monitoring the change of the accumulated carbon amount, and adjusting the DPF inlet temperature according to a correlation table between the accumulated carbon amount and the regeneration temperature, until the accumulated carbon amount is less than a preset value for ending active regeneration.

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

[0099] The control method for extending the active regeneration period of the DPF in the embodiment of the present application is described in detail above. The control system and device for extending the active regeneration period of the DPF will be described in detail below.

[0100] See also Figure 3 The present application provides an embodiment of a control system for extending the active regeneration period of a DPF, the embodiment comprising:

[0101] A first acquisition unit 301 is used to acquire the accumulated carbon amount of a target vehicle, where the target vehicle is in a running state;

[0102] A trigger unit 302, for triggering a driving regeneration mode when the accumulated carbon amount is within the active regeneration triggering interval;

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

[0104] The monitoring unit 304 is used to monitor the change of the accumulated carbon amount and adjust the DPF inlet temperature according to the association table between the accumulated carbon amount and the regeneration temperature until the accumulated carbon amount is less than the preset value for ending the 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 correspond to each other and will not be described again here.

[0106] See also Figure 4 The present application provides another embodiment of a control system for extending the active regeneration period of a DPF, the embodiment comprising:

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

[0108] The second determination unit 402 is used to determine a correlation table between the accumulated carbon amount and the regeneration temperature according to the vehicle data.

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

[0110] A scenario simulation unit 404 is used to perform scenario simulation on the vehicle model according to the PDF exhaust temperature limit value and the accumulated carbon trigger value, so that the accumulated carbon of the vehicle model decreases naturally while the PDF inlet temperature is increased to maintain the PDF exhaust temperature limit value, and obtain an experimental result;

[0111] The fitting unit 405 is used to fit the experimental results to obtain a correlation table between the accumulated carbon amount and the regeneration temperature.

[0112] A first acquisition unit 406 is used to acquire the accumulated carbon amount of a target vehicle, where the target vehicle is in a running state;

[0113] The prompt 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 triggering interval, so that the user parks according to the parking regeneration mode prompt and triggers the parking regeneration mode.

[0114] A trigger unit 408, for triggering a driving regeneration mode when the accumulated carbon amount is within the active regeneration triggering interval;

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

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

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

[0118] When the exhaust temperature value of the vehicle model is the DPF exhaust temperature limit value and the accumulated carbon amount of the vehicle model is at the accumulated carbon amount trigger value, acquiring a first PDF inlet temperature of the vehicle model;

[0119] The exhaust temperature value change of the vehicle model is monitored in real time when the carbon accumulation of the vehicle model decreases. If the exhaust temperature value of the vehicle model is lower than the first DPF exhaust temperature limit value, the DPF inlet temperature is increased, and the current carbon accumulation 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 correspond to each other and will not be described again here.

[0121] See also Figure 5 The present application provides another embodiment of a control device for extending the active regeneration period of a DPF, including:

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

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

[0124] The processor 501 specifically performs Figure 1 to Figure 2 The operations corresponding to the steps in the method are not described in detail here.

[0125] The present application also relates to a computer-readable storage medium on which a program is stored, wherein when the program is run on a computer, the computer is caused to execute any of the above methods.

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

[0127] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

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

[0129] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0130] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially 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, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, read-only memory), random access memory (RAM, random access memory), disk or optical disk and other media that can store program code.

Claims

1. A control method for extending the active regeneration period of a DPF, characterized in that: The method comprises: Obtaining the accumulated carbon amount of a target vehicle, where the target vehicle is in a running state; When the accumulated carbon amount is within the active regeneration triggering interval, the driving regeneration mode is triggered; Determining a regeneration temperature corresponding to the carbon accumulation amount, and setting a DPF inlet temperature according to the regeneration temperature; Monitor the change of the accumulated carbon amount, and adjust the DPF inlet temperature according to the association table between the accumulated carbon amount and the regeneration temperature until the accumulated carbon amount is less than the preset value for ending the active regeneration.

2. The control method according to claim 1, characterized in that: The obtaining of the accumulated carbon amount of the target vehicle, after the target vehicle is in a running state, the control method further comprises: When the accumulated carbon amount is higher than the maximum value of the active regeneration triggering interval, the parking regeneration mode prompt is activated so that the user parks according to the parking regeneration mode prompt and triggers the parking regeneration mode.

3. The control method according to claim 1, characterized in that: The method further comprises: Obtain the DPF exhaust temperature limit value and carbon accumulation trigger value of the target vehicle; A scenario simulation is performed on a vehicle model according to the PDF exhaust temperature limit value and the accumulated carbon amount trigger value, so that the accumulated carbon amount of the vehicle model decreases naturally while the PDF inlet temperature is increased to maintain the PDF exhaust temperature limit value, and an experimental result is obtained; The experimental results are fitted to obtain a correlation table between the accumulated carbon amount and the regeneration temperature.

4. The control method according to claim 3, characterized in that: The scenario simulation of the vehicle model is performed according to the PDF exhaust temperature limit value and the accumulated carbon trigger value, so that the accumulated carbon of the vehicle model naturally decreases while the PDF inlet temperature is increased to maintain the PDF exhaust temperature limit value, and the experimental results obtained include: When the exhaust temperature value of the vehicle model is the DPF exhaust temperature limit value and the accumulated carbon amount of the vehicle model is at the accumulated carbon amount trigger value, acquiring a first PDF inlet temperature of the vehicle model; The exhaust temperature value change of the vehicle model is monitored in real time when the carbon accumulation of the vehicle model decreases. If the exhaust temperature value of the vehicle model is lower than the first DPF exhaust temperature limit value, the DPF inlet temperature is increased, and the current carbon accumulation and DPF inlet temperature of the vehicle model are recorded to obtain experimental results.

5. The control method according to any one of claims 1 to 4, characterized in that: The method further comprises: obtaining the accumulated carbon amount of the target vehicle, after the target vehicle is in a running state; Acquiring vehicle data of the target vehicle; A carbon accumulation amount and regeneration temperature association table is determined according to the vehicle data.

6. A control system for extending the active regeneration period of DPF, characterized in that: The system comprises: A first acquisition unit is used to acquire the accumulated carbon amount of a target vehicle, where the target vehicle is in a running state; A trigger unit, used for triggering a driving regeneration mode when the accumulated carbon amount is within the active regeneration triggering interval; A first determination unit, used to determine a regeneration temperature corresponding to the carbon accumulation amount, and set a DPF inlet temperature according to the regeneration temperature; The monitoring unit is used to monitor the change of the accumulated carbon amount and adjust the DPF inlet temperature according to the association table between the accumulated carbon amount and the regeneration temperature until the accumulated carbon amount is less than the preset value for ending the active regeneration.

7. The control system according to claim 6, characterized in that: The control system further comprises: The prompt 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 interval, so that the user parks according to the parking regeneration mode prompt and triggers the parking regeneration mode.

8. The control system according to claim 6, characterized in that: The control system further comprises: The second acquisition unit is used to acquire the DPF exhaust temperature limit value and the carbon accumulation trigger value; A scenario simulation unit, used to perform scenario simulation on a vehicle model according to the PDF exhaust temperature limit value and the accumulated carbon trigger value, so that the accumulated carbon of the vehicle model decreases naturally while the PDF inlet temperature is increased to maintain the PDF exhaust temperature limit value, and obtain an experimental result; The fitting unit is used to fit the experimental results to obtain a correlation table between the accumulated carbon amount and the regeneration temperature.

9. A control device for extending the active regeneration period of a DPF, characterized in that: The device comprises: Processor, memory, input-output unit, and bus; The processor is connected to the memory, the input and output unit, and the bus; The memory stores a program, and the processor calls the program to execute the method according to any one of claims 1 to 5.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a program, and when the program is executed on a computer, the method according to any one of claims 1 to 5 is performed.

Images