Rationality fault detection method for periodic oscillation of GPF differential pressure sensor

Abstract

A rationality fault detection method for periodic oscillation of a GPF differential pressure sensor. The method comprises the following steps: acquiring operating parameters of a vehicle, and determining whether the vehicle is currently in a steady-state operating condition and meets a stability condition; if so, proceeding with subsequent steps, and if not, repeating the current step; acquiring an original GPF inlet pressure value and an original GPF outlet pressure value; respectively performing first-order low-pass filtering processing on the original GPF inlet pressure value and the original GPF outlet pressure value, so as to obtain a filtered GPF inlet pressure value and a filtered GPF outlet pressure value; on the basis of filtered GPF inlet pressure values and filtered GPF outlet pressure values at different moments, obtaining interval durations between extreme values of the filtered GPF outlet / inlet pressure values at the different moments; and on the basis of the interval durations between the extreme values of the filtered GPF inlet pressure values at the different moments and the interval durations between the extreme values of the filtered GPF outlet pressure values at the different moments, determining whether a GPF differential pressure sensor has a rationality fault of periodic oscillation.

Description

A method for detecting the rationality of periodic oscillation faults in a GPF differential pressure sensor

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] The embodiments of this application are based on the Chinese patent application with application number 202311286396.6 and application date September 28, 2023, and claim the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into the embodiments of this application as a reference. Technical Field

[0003] The present invention relates to the field of GPF differential pressure sensor fault detection, and in particular to a method for detecting the rationality of periodic oscillation of a GPF differential pressure sensor. Background Art

[0004] The National VI emission standards further tighten emission limits for vehicle exhaust pollutants. To meet these limits for particulate matter in vehicle exhaust, most OEMs have adopted the technical approach of installing particulate filters in their exhaust systems. These filters can capture over 90% of the particulate matter in vehicle exhaust. However, captured particulate matter adheres to the filter element. As particulate matter accumulates, the engine's exhaust resistance increases. When the particulate filter becomes severely clogged, the back pressure in the engine exhaust system rises, deteriorating engine power and economy.

[0005] A gasoline engine particulate filter (GPF) is equipped with a differential pressure sensor that reads the differential pressure across the filter carrier. This differential pressure measurement serves as a crucial input for determining the accuracy of carbon accumulation in the PPF, thus impacting the accuracy of PPF regeneration control. Therefore, timely detection of differential pressure sensor failures is crucial to avoid inaccurate carbon accumulation estimation and regeneration control accuracy.

[0006] Prior art discloses a method for controlling active regeneration of a particulate filter. However, this prior art does not disclose that if the sensor collecting the pressure difference of the particulate filter fails, it may lead to an inaccurate estimation of the carbon accumulation, causing the driver to be alarmed by the excessive carbon accumulation, thereby reducing customer satisfaction. It may also cause the particulate filter to burn out.

[0007] Summary of the Invention

[0008] The object of the present invention is to provide a method for detecting a rationality fault of a periodic oscillation of a GPF differential pressure sensor, so as to detect the rationality fault of the periodic oscillation of the GPF differential pressure sensor in a timely and accurate manner.

[0009] To solve the above technical problems, the present invention provides a technical solution: a method for detecting the rationality of periodic oscillation faults of a GPF differential pressure sensor, the method comprising the following steps:

[0010] Obtain vehicle operating parameters to determine whether the vehicle is currently in a steady-state condition and meets stability conditions; if so, proceed to the subsequent steps; if not, repeat this step;

[0011] Obtaining a GPF inlet pressure original value and a GPF outlet pressure original value; the GPF inlet pressure original value and the GPF outlet pressure original value are measured by a GPF differential pressure sensor;

[0012] Performing first-order low-pass filtering on the original value of the GPF inlet pressure and the original value of the GPF outlet pressure to obtain a GPF inlet pressure filtered value and a GPF outlet pressure filtered value;

[0013] According to the GPF inlet pressure filter value and the GPF outlet pressure filter value at different moments, the interval length between the extreme values ​​of the GPF inlet pressure filter value at different moments and the interval length between the extreme values ​​of the GPF outlet pressure filter value at different moments are obtained;

[0014] Based on the interval lengths between the extreme values ​​of the GPF inlet pressure filter values ​​at different times, and the interval lengths between the extreme values ​​of the GPF outlet pressure filter values ​​at different times, it is determined whether the GPF differential pressure sensor has a rationality fault of periodic oscillation.

[0015] As a second aspect, the present invention further provides an electronic device, comprising a memory, a processor, and a program stored in the memory and executable on the processor, wherein the processor implements the method when executing the program.

[0016] As a third aspect, the present invention further provides a car comprising the electronic device.

[0017] The beneficial effects of the present invention are: fault judgment is performed in real time according to the fluctuation of the GPF pressure signal, and the fault threshold is dynamically updated in real time, so that fault detection can be performed promptly and accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a flow chart of a method for detecting the rationality of a periodic oscillation fault of a GPF differential pressure sensor according to a first embodiment of the present invention. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0020] Example 1:

[0021] The particulate filter (GPF) differential pressure sensor monitors the pressure difference between the inlet and outlet of the PPF carrier. Sensor failure occurs when the sensor malfunctions and cannot accurately read the differential pressure across the PPF carrier. Sensor failures include electrical faults and rationality faults. Electrical faults include open, short, and disconnected wiring harnesses. Rationality faults, however, refer to faults other than electrical faults that indicate irrational signals.

[0022] The exhaust side system structure of the engine is sequentially connected with a pre-catalyst oxygen sensor, a catalyst, a post-catalyst oxygen sensor, a GPF, and a sensor for detecting the pressure difference between the GPF inlet and outlet. The GPF pressure difference sensor can detect the GPF inlet absolute pressure signal and the GPF outlet absolute pressure signal. The present invention is to detect the fault of the GPF pressure difference sensor and detect its rationality fault. The rationality fault of the present invention does not necessarily cover all rationality faults, but only one type of rationality fault, which is called periodic oscillation rationality fault detection. Since the engine performs fuel injection and ignition in each cylinder at a non-continuous time, if the pressure sensor signal is normal, it will cause the original pressure signal of the exhaust system to fluctuate periodically. The detection of the GPF pressure difference sensor signal based on the phenomenon of periodic fluctuation of the original exhaust pressure signal is called periodic oscillation rationality fault detection, and the specific detection method is as follows.

[0023] Referring to FIG1 , a method for detecting the rationality of periodic oscillation of a GPF differential pressure sensor is shown. The method comprises the following steps:

[0024] Obtain vehicle operating parameters to determine whether the vehicle is currently in a steady-state condition and meets stability conditions; if so, proceed to the subsequent steps; if not, repeat this step;

[0025] Obtaining a GPF inlet pressure original value and a GPF outlet pressure original value; the GPF inlet pressure original value and the GPF outlet pressure original value are measured by a GPF differential pressure sensor;

[0026] Performing first-order low-pass filtering on the original value of the GPF inlet pressure and the original value of the GPF outlet pressure to obtain a GPF inlet pressure filtered value and a GPF outlet pressure filtered value;

[0027] According to the GPF inlet pressure filter value and the GPF outlet pressure filter value at different moments, the interval length between the extreme values ​​of the GPF inlet pressure filter value at different moments and the interval length between the extreme values ​​of the GPF outlet pressure filter value at different moments are obtained;

[0028] Based on the interval lengths between the extreme values ​​of the GPF inlet pressure filter values ​​at different times, and the interval lengths between the extreme values ​​of the GPF outlet pressure filter values ​​at different times, it is determined whether the GPF differential pressure sensor has a rationality fault of periodic oscillation.

[0029] Furthermore, the steady-state operating condition determination conditions are as follows:

[0030] 1) The engine is in running state;

[0031] 2) The engine speed is within a certain range (between 600 rpm and 5900 rpm in this example); and after entering the GPF differential pressure sensor periodic oscillation rationality fault detection, the engine speed fluctuation is within a certain range (±15 rpm in this example);

[0032] 3) The intake density (i.e., load) of the fresh air entering the cylinder is within a certain range (between 200 mgpl and 3000 mgpl in this example), and after the rationality fault detection of the periodic oscillation of the differential pressure sensor entering the GPF, the fluctuation of the intake density of the fresh air entering the cylinder is within a certain range (±20 mgpl in this example);

[0033] 4) The target air-fuel ratio fluctuation is within a certain range (±0.1 in this example);

[0034] 5) The fluctuation of the difference between the target air-fuel ratio and the actual air-fuel ratio is within a certain range (±0.1 in this example);

[0035] 6) The actual air-fuel ratio fluctuation is within a certain range (±0.1 in this example);

[0036] 7) The temperature fluctuation of the GPF body is within a certain range (±5°C in this example);

[0037] 8) The engine water temperature is within a certain range (0°C to 100°C in this example), and after entering the GPF differential pressure sensor periodic oscillation rationality fault detection, the engine water temperature fluctuation is within a certain range (±2°C in this example);

[0038] 9) The intake air temperature is within a certain range (30°C to 80°C in this example), and after entering the GPF differential pressure sensor periodic oscillation rationality fault detection, the intake air temperature fluctuation is within a certain range (±1.5°C in this example);

[0039] 10) The fluctuation of ignition angle efficiency is within a certain range (±0.1 in this example);

[0040] 11) No detonation and no pre-ignition occurred;

[0041] 12) The engine does not experience fuel cut-off;

[0042] 13) The oxygen sensor before the catalyst and the oxygen sensor after the catalyst have completed heating activation;

[0043] 14) The atmospheric pressure fluctuation is within a certain range (±0.5 kPa in this example);

[0044] 15) No fire failure occurs;

[0045] 16) No electrical fault of the GPF differential pressure sensor occurs;

[0046] 17) No GPF temperature sensor failure occurs;

[0047] 18) No reasonable fault of periodic oscillation of the GPF differential pressure sensor was detected during this vehicle driving cycle;

[0048] When the above conditions are met at the same time, it is determined to be in a steady-state condition.

[0049] Furthermore, the stability condition is that the time of being in a steady-state condition continuously exceeds a certain time (5 seconds in this embodiment).

[0050] Furthermore, the GPF inlet pressure filter value and the GPF outlet pressure filter value are obtained as follows: pGPFInletFilter(N)=K GPFInlet ×[p GPFInlet (N)-pGPFInletFilter(N-1)]+pGPFInletFilter(N-1) pGPFOutletFilter(N)=K GPFOutlet ×[p GPFOutlet (N)-pGPFOutletFilter(N-1)]+pGPFOutletFilter(N-1)

[0051] Where p GPFInlet (N) is the original value of the GPF inlet pressure in the Nth sampling period, pGPFInletFilter(N) is the filtered value of the GPF inlet pressure in the Nth sampling period, and pGPFInletFilter(N-1) is the filtered value of the GPF inlet pressure in the N-1th sampling period; GPFOutlet(N) is the original value of the GPF outlet pressure at the Nth sampling cycle, pGPFInletFilter(N) is the filtered value of the GPF outlet pressure at the Nth sampling cycle, and pGPFOutletFilter(N-1) is the filtered value of the GPF outlet pressure at the N-1th sampling cycle; N is a positive integer; in particular, pGPFInletFilter(0) is equal to the original value of the GPF inlet pressure p at the 0th sampling cycle. GPFInlet (0), pGPFOutletFilter(0) is equal to the original value of GPF outlet pressure p at the 0th sampling cycle GPFOutlet (0); the sampling period interval is Δt (1ms in this embodiment); K GPFInlet is the GPF inlet pressure filter coefficient, K GPFOutlet is the GPF outlet pressure filter coefficient, and satisfies,

[0052] In the above formula, m is the number of engine cylinders, n is the engine speed, and f1(n) and f2(n) are both calibrated based on the engine speed;

[0053] The specific calibration is as follows:

[0054] Furthermore, based on the interval lengths between the extreme values ​​of the GPF inlet pressure filter values ​​at different times, and the interval lengths between the extreme values ​​of the GPF outlet pressure filter values ​​at different times, the process of determining whether the GPF differential pressure sensor has a rationality fault of periodic oscillation is as follows;

[0055] The time interval between the maximum value of the GPF inlet pressure filter value of a certain sampling period and the maximum value of the GPF inlet pressure filter value of the previous sampling period is recorded as the time interval between adjacent maximum values ​​of the GPF inlet pressure filter value of the sampling period tGPFInletMaxInterval; the time interval between the minimum value of the GPF inlet pressure filter value of a certain sampling period and the minimum value of the GPF inlet pressure filter value of the previous sampling period is recorded as the time interval between adjacent minimum values ​​of the GPF inlet pressure filter value of the sampling period tGPFInletMinInterval;

[0056] According to the time intervals of adjacent maximum values ​​of the GPF inlet pressure filter value tGPFInletMaxInterval and adjacent minimum values ​​of the GPF inlet pressure filter value tGPFInletMinInterval of different sampling periods, the average value of the time intervals of adjacent maximum values ​​of the GPF inlet pressure filter value is calculated respectively. Average value of the time interval between adjacent minimum values ​​of GPF inlet pressure filter value

[0057] If satisfied,

[0058] It is determined that the GPF differential pressure sensor has a rationality fault of periodic oscillation, where rMaxDiffLimit is a preset value;

[0059] The time interval between the maximum value of the GPF outlet pressure filter value of a certain sampling period and the maximum value of the GPF outlet pressure filter value of the previous sampling period is recorded as the time interval between adjacent maximum values ​​of the GPF outlet pressure filter value of the sampling period tGPFOutletMaxInterval; the time interval between the minimum value of the GPF outlet pressure filter value of a certain sampling period and the minimum value of the GPF outlet pressure filter value of the previous sampling period is recorded as the time interval between adjacent minimum values ​​of the GPF outlet pressure filter value of the sampling period tGPFOutletMinInterval;

[0060] According to the time intervals tGPFOutletMaxInterval and tGPFOutletMinInterval of the GPF outlet pressure filter values ​​at different sampling periods, the average values ​​of the time intervals of the GPF outlet pressure filter values ​​at the adjacent maximum values ​​are calculated. The time interval between adjacent minimum values ​​of GPF outlet pressure filter value

[0061] If satisfied,

[0062] It is judged that the GPF differential pressure sensor has a rational fault of periodic oscillation;

[0063] According to the average time interval of adjacent maximum values ​​of GPF inlet pressure filter value The time interval between adjacent minimum values ​​of GPF inlet pressure filter value The GPF inlet pressure oscillation period tGPFInletCycle is obtained, specifically:

[0064] According to the average time interval of adjacent maximum values ​​of GPF outlet pressure filter value The time interval between adjacent minimum values ​​of GPF outlet pressure filter value Get the GPF outlet pressure oscillation period tGPFOutletCycle, specifically:

[0065] If satisfied;

[0066] It is judged that the GPF differential pressure sensor has a rationality fault of periodic oscillation, where f(T GPFBrick ,r GPFSoot ) is determined by the GPF body temperature T GPFBrick and cumulative carbon coefficient r GPFSoot Determine together; This embodiment f(T GPFBrick ,r GPFSoot ) is as follows:

[0067] Cumulative carbon coefficient r GPFSoot It is obtained based on the actual carbon content of GPF m_Soot and the upper limit of GPF carbon load m_SootCapacity, specifically: (Cumulative carbon coefficient r GPFSoot The calculation method is described in the prior art CN201710858110.5 “Estimation method of accumulated carbon amount in diesel vehicle particulate filter” and CN201811574677.0 “A graded control method and control system for deceleration and fuel cut-off regeneration of gasoline engine particulate filter”. Adpat is the self-learning correction coefficient, r Adpat The initial value is 0 and is updated according to self-learning and saved after the vehicle is powered off.

[0068] Furthermore, the average time interval between adjacent maximum values ​​of the GPF inlet pressure filter value is Average value of the time interval between adjacent minimum values ​​of GPF inlet pressure filter value The acquisition process is as follows:

[0069] If the time interval tGPFInletMaxInterval between the adjacent maximum values ​​of the GPF inlet pressure filter value in the current sampling period is less than a preset value A 11 The time difference between the tGPFInletMaxInterval of the current sampling period and the tGPFInletMaxInterval of other sampling periods is less than a preset value B. 11 , then remove the tGPFInletMaxInterval of the current sampling period so that it does not participate in Calculation of A 11 Related to the engine speed n, B 11 is a certain multiple of the average value of tGPFInletMaxInterval of other sampling periods (0.8 times in this embodiment); if during the continuous sampling of the GPF inlet / inlet pressure, the event "the time interval between the adjacent maximum values ​​of the GPF inlet pressure filter value in the current sampling period tGPFInletMaxInterval is less than the preset value A11 The cumulative number of occurrences exceeds the preset number CNT 11 (1000 times in this embodiment), it is determined that the GPF differential pressure sensor has a rationality fault of periodic oscillation;

[0070] Among them A 11 The calibration process is as follows:

[0071] If the time interval tGPFInletMaxInterval between the adjacent maximum values ​​of the GPF inlet pressure filter value in the current sampling period is greater than a preset value A 21 , and the time difference between the tGPFInletMaxInterval of the current sampling period and the tGPFInletMaxInterval of other sampling periods is greater than a preset value B 21 , then remove the tGPFInletMaxInterval of the current sampling period so that it does not participate in Calculation of A 21 Related to the engine speed n, B 21 is a certain multiple of the average value of tGPFInletMaxInterval of other sampling periods (1.2 times in this embodiment); if during the continuous sampling of the GPF inlet / inlet pressure, the event "the time interval between the adjacent maximum values ​​of the GPF inlet pressure filter value in the current sampling period tGPFInletMaxInterval is greater than the preset value A 21 The cumulative number of occurrences exceeds the preset number CNT 21 (1000 times in this example), it is determined that the GPF differential pressure sensor has a rationality fault of periodic oscillation;

[0072] Among them A 21 The calibration process is as follows:

[0073] Take the average of tGPFInletMaxInterval of the remaining sampling periods after elimination and get

[0074] If the time interval tGPFInletMinInterval between the adjacent minimum values ​​of the GPF inlet pressure filter value in the current sampling period is less than a preset value A 31 The time difference between the tGPFInletMinInterval of the current sampling period and the tGPFInletMinInterval of other sampling periods is less than a preset value B. 31 , then the tGPFInletMinInterval of the current sampling period is eliminated so that it does not participate in Calculation of A31 Related to the engine speed n, B 31 is a certain multiple of the average value of tGPFInletMinInterval of other sampling periods (0.8 times in this embodiment); if during the continuous sampling of the GPF inlet / inlet pressure, the event "the time interval between the adjacent maximum values ​​of the GPF inlet pressure filter value in the current sampling period tGPFInletMinInterval is less than the preset value A 31 The cumulative number of occurrences exceeds the preset number CNT 31 (CNT31 in this example takes 1000 times), then it is judged that the GPF differential pressure sensor has a rationality fault of periodic oscillation;

[0075] Among them A 31 The calibration process is as follows:

[0076] If the time interval tGPFInletMinInterval between the adjacent minimum values ​​of the GPF inlet pressure filter value in the current sampling period is greater than a preset value A 41 The time difference between the tGPFInletMinInterval of the current sampling period and the tGPFInletMinInterval of other sampling periods is greater than a preset value B. 41 , then the tGPFInletMinInterval of the current sampling period is eliminated so that it does not participate in Calculation of; Where A 41 Related to the engine speed n, B 41 is a certain multiple of the average value of tGPFInletMinInterval of other sampling periods (1.2 times in this embodiment); if during the continuous sampling of the GPF inlet / inlet pressure, the event "the time interval between the adjacent maximum values ​​of the GPF inlet pressure filter value in the current sampling period tGPFInletMinInterval is greater than the preset value A 41 The cumulative number of occurrences exceeds the preset number CNT 41 (1000 times in this embodiment), it is determined that the GPF differential pressure sensor has a rationality fault of periodic oscillation;

[0077] Among them A 41 The calibration process is as follows:

[0078] Take the average of tGPFInletMinInterval of the remaining sampling periods after elimination and get

[0079] Furthermore, the average time interval between adjacent maximum values ​​of the GPF outlet pressure filter value is Average value of the time interval between adjacent minimum values ​​of GPF outlet pressure filter value The acquisition process is as follows:

[0080] If the time interval tGPFOutletMaxInterval between the adjacent maximum values ​​of the GPF outlet pressure filter value in the current sampling period is less than a preset value A 12 , and the time difference between the tGPFOutletMaxInterval of the current sampling period and the tGPFOutletMaxInterval of other sampling periods is less than a preset value B 12 , then remove the tGPFOutletMaxInterval of the current sampling period so that it does not participate in Calculation of A 12 Related to the engine speed n, B 12 is a certain multiple of the average value of tGPFOutletMaxInterval of other sampling periods (0.8 times in this embodiment); if during the continuous sampling of the GPF inlet / inlet pressure, the event "the time interval between the adjacent maximum values ​​of the GPF outlet pressure filter value in the current sampling period tGPFOutletMaxInterval is less than the preset value A 12 The cumulative number of occurrences exceeds the preset number CNT 12 (1000 times in this embodiment), it is determined that the GPF differential pressure sensor has a rationality fault of periodic oscillation;

[0081] A 12 The calibration process is as follows:

[0082] If the time interval tGPFOutletMaxInterval between the adjacent maximum values ​​of the GPF outlet pressure filter value in the current sampling period is greater than a preset value A 22 , and the time difference between the tGPFOutletMaxInterval of the current sampling period and the tGPFOutletMaxInterval of other sampling periods is greater than a preset value B 22 , then remove the tGPFOutletMaxInterval of the current sampling period so that it does not participate in Calculation of A 22 Related to the engine speed n, B 22 is a certain multiple of the average value of tGPFOutletMaxInterval of other sampling periods (1.2 times in this embodiment); if during the continuous sampling of the GPF inlet / inlet pressure, the event "the time interval between the adjacent maximum values ​​of the GPF outlet pressure filter value in the current sampling period tGPFOutletMaxInterval is greater than the preset value A22 The cumulative number of occurrences exceeds the preset number CNT 22 (1000 times in this embodiment), it is determined that the GPF differential pressure sensor has a rationality fault of periodic oscillation;

[0083] A 22 The calibration process is as follows:

[0084] Take the average of tGPFOutletMaxInterval of the remaining sampling periods after elimination and get

[0085] If the time interval tGPFOutletMinInterval between the adjacent minimum values ​​of the GPF outlet pressure filter value in the current sampling period is less than a preset value A 32 The time difference between the tGPFOutletMinInterval of the current sampling period and the tGPFOutletMinInterval of other sampling periods is less than a preset value B. 32 , then remove the tGPFOutletMinInterval of the current sampling period so that it does not participate in Calculation of A 32 Related to the engine speed n, B 32 is a certain multiple of the average value of tGPFOutletMinInterval of other sampling periods (0.8 times in this embodiment); if during the continuous sampling of the GPF inlet / inlet pressure, the event "the time interval tGPFOutletMinInterval between the adjacent maximum values ​​of the GPF outlet pressure filter value in the current sampling period is less than the preset value A 32 The cumulative number of occurrences exceeds the preset number CNT 32 (1000 times in this embodiment), it is determined that the GPF differential pressure sensor has a rationality fault of periodic oscillation;

[0086] A 32 The calibration process is:

[0087] If the time interval tGPFOutletMinInterval between the adjacent minimum values ​​of the GPF outlet pressure filter value in the current sampling period is greater than a preset value A 42 The time difference between the tGPFOutletMinInterval of the current sampling period and the tGPFInletMinInterval of other sampling periods is greater than a preset value B. 42 , then remove the tGPFOutletMinInterval of the current sampling period so that it does not participate in Calculation of; Where A 42 Related to the engine speed n, B 42 is a certain multiple of the average value of tGPFOutletMinInterval of other sampling periods (1.2 times in this embodiment); if during the continuous sampling of the GPF inlet / inlet pressure, the event "the time interval between the adjacent maximum values ​​of the GPF inlet pressure filter value in the current sampling period tGPFOutletMinInterval is greater than the preset value A 42 The cumulative number of occurrences exceeds the preset number CNT 42 (1000 times in this embodiment), it is determined that the GPF differential pressure sensor has a rationality fault of periodic oscillation;

[0088] A 42 The calibration process is as follows:

[0089] Take the average of tGPFOutletMinInterval of the remaining sampling periods after elimination, and get

[0090] Furthermore, the self-learning correction coefficient r Adpat The self-learning update process is as follows;

[0091] Determine whether it is currently in the self-learning state. If so, read the cumulative carbon coefficient rGPFSootBegin at the initial moment of the self-learning state and obtain the cumulative carbon coefficient r GPFSoot The duration t1 when the value of rGPFSootBegin changes to 0;

[0092] According to t1, T GPFBrick 、rGPFSootBegin self-learning correction coefficient r Adpat to update.

[0093] Furthermore, the self-learning working condition determination conditions are as follows:

[0094] a) The engine is in running state;

[0095] b) The engine speed fluctuation is within a certain range (±15 rpm in this example);

[0096] c) The vehicle speed exceeds a certain value (70 km / h in this example);

[0097] d) Cumulative carbon coefficient r GPFSoot Not exceeding a certain value (0.1 in this example);

[0098] e) The GPF body temperature is not lower than a certain value (610°C in this example);

[0099] f) The fluctuation of the intake density of the fresh air entering the cylinder is within a certain range (±20 mgpl in this example);

[0100] g) The target air-fuel ratio fluctuation is within a certain range (±0.1 in this example);

[0101] h) The fluctuation of the difference between the target air-fuel ratio and the actual air-fuel ratio is within a certain range (±0.1 in this example);

[0102] i) The actual air-fuel ratio fluctuation is within a certain range (±0.1 in this example);

[0103] j) The engine water temperature is within a certain range (0°C to 100°C in this example), and after entering the GPF differential pressure sensor periodic oscillation rationality fault detection, the engine water temperature fluctuation is within a certain range (±2°C in this example);

[0104] k) The intake air temperature is within a certain range (30°C to 80°C in this example), and after entering the GPF differential pressure sensor periodic oscillation rationality fault detection, the intake air temperature fluctuation is within a certain range (±1.5°C in this example);

[0105] l) The fluctuation of ignition angle efficiency is within a certain range (±0.1 in this example);

[0106] m) No detonation and no pre-ignition occur;

[0107] n) The temperature fluctuation of the GPF body is within a certain range (±3°C in this example);

[0108] o) Both the oxygen sensor before the catalyst and the oxygen sensor after the catalyst have completed heating and activation;

[0109] p) The atmospheric pressure fluctuation is within a certain range (±0.5kPa in this example);

[0110] q) No fire failure occurs;

[0111] r) No electrical fault of the GPF differential pressure sensor occurs;

[0112] s) No GPF temperature sensor failure occurs;

[0113] t) No rationality fault of periodic oscillation of the GPF differential pressure sensor was detected during this vehicle driving cycle;

[0114] When the above conditions are met at the same time, it is determined to be in the self-learning state.

[0115] Furthermore, according to t1, T GPFBrick 、rGPFSootBegin self-learning correction coefficient r AdpatThe update process is as follows;

[0116] If t1>t Base ×f1(rGPFSootBegin,T GPFBrick ), (indicates that time t1 is too long, the carbon accumulation coefficient calculated based on the GPF differential pressure sensor is too large, indicating that the GPF differential pressure signal is estimated too large) where t Base is the basic time (7s in this example, specifically the GPF without faults is in rGPFSootBegin=0.1, T GPFBrick = the time for the carbon accumulation to be cleared when the test is performed at 610℃), then r Adpat The update method is, Adpat =r Adpat (z)-k1×f1(rGPFSootBegin,T GPFBrick ); where k1 is the first gain coefficient, r Adpat (z) is the self-learning correction coefficient stored in the last update;

[0117] Where f1(rGPFSootBegin,T GPFBrick )The calibration results are as follows:

[0118] If t1 <t Base ×f2(rGPFSootBegin,T GPFBrick ), (indicates that time t1 is too short, the carbon accumulation coefficient calculated based on the GPF differential pressure sensor is too small, indicating that the GPF differential pressure signal is estimated too small); then r Adpat The update method is, Adpat =r Adpat (z)-k2×f2(rGPFSootBegin,T GPFBrick ); where k2 is the second gain coefficient (0.01 in this example);

[0119] Where f2(rGPFSootBegin,T GPFBrick )The calibration results are as follows:

[0120] If t Base ×f2(rGPFSootBegin,T GPFBrick ) <t1<t Base ×f1(rGPFSootBegin,T GPFBrick ), then r Adpat Remain unchanged; if the number of times the condition is met If the number of times exceeds a certain value (15 times in this example), then r Adpat =r Adpat(z) + k3; where k3 is the third gain coefficient (0.005 in this embodiment); The counting update method is to satisfy t Base ×f2(rGPFSootBegin,T GPFBrick ) <t1<t Base ×f1(rGPFSootBegin,T GPFBrick ) condition, and in each driving cycle Add at most one, when r Adpat After update Cleared to zero.

[0121] Example 2:

[0122] This embodiment discloses a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the method for detecting the rationality of the periodic oscillation of the GPF differential pressure sensor described in Example 1 are implemented.

[0123] An embodiment of the present invention further provides a car, comprising the electronic device.

[0124] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for detecting rationality faults of periodic oscillations of a GPF differential pressure sensor, which is applied to the electronic equipment of a vehicle, and is characterized in that: Obtain the operating parameters of the whole vehicle, judge whether it is in a steady-state working condition currently and meet the stability conditions; if so, proceed to the subsequent steps, otherwise repeat this step; Obtain the original value of the GPF inlet pressure and the original value of the GPF outlet pressure; the original value of the GPF inlet pressure and the original value of the GPF outlet pressure are measured by the GPF differential pressure sensor; Perform first-order low-pass filtering processing on the original value of the GPF inlet pressure and the original value of the GPF outlet pressure respectively to obtain the filtered value of the GPF inlet pressure and the filtered value of the GPF outlet pressure; According to the filtered value of the GPF inlet pressure and the filtered value of the GPF outlet pressure at different times, obtain the interval duration between the extreme values of the filtered value of the GPF inlet pressure at different times, and the interval duration between the extreme values of the filtered value of the GPF outlet pressure at different times; Judge whether there is a rationality fault of periodic oscillation of the GPF differential pressure sensor according to the interval duration between the extreme values of the filtered value of the GPF inlet pressure at different times and the interval duration between the extreme values of the filtered value of the GPF outlet pressure at different times.

2. The rationality fault detection method for the periodic oscillation of the GPF differential pressure sensor according to claim 1, characterized in that: The steady-state working condition determination conditions are specifically as follows. 1) The engine is in an operating state; 2) The engine speed is within a certain range; and after entering the rationality fault detection of the periodic oscillation of the GPF differential pressure sensor, the fluctuation amount of the engine speed is within a certain range; 3) The intake density of the fresh air entering the cylinder is within a certain range, and after entering the rationality fault detection of the periodic oscillation of the GPF differential pressure sensor, the fluctuation amount of the intake density of the fresh air entering the cylinder is within a certain range; 4) The fluctuation amount of the target air-fuel ratio is within a certain range; 5) The fluctuation amount of the difference between the target air-fuel ratio and the actual air-fuel ratio is within a certain range; 6) The fluctuation amount of the actual air-fuel ratio is within a certain range; 7) The fluctuation amount of the GPF body temperature is within a certain range; 8) The engine water temperature is within a certain range, and after entering the rationality fault detection of the periodic oscillation of the GPF differential pressure sensor, the fluctuation amount of the engine water temperature is within a certain range; 9) The intake temperature is within a certain range, and after entering the rationality fault detection of the periodic oscillation of the GPF differential pressure sensor, the fluctuation amount of the intake temperature is within a certain range; 10) The fluctuation amount of the ignition angle efficiency is within a certain range; 11) No knocking and no pre-ignition occur; 12) The engine does not experience fuel cut-off; 13) Both the pre-catalyst oxygen sensor and the post-catalyst oxygen sensor have completed heating activation; 14) The fluctuation amount of the atmospheric pressure is within a certain range; 15) No misfire fault occurs; 16) No electrical fault of the GPF differential pressure sensor occurs; 17) No fault of the GPF temperature sensor occurs; 18) No rationality fault of the periodic oscillation of the GPF differential pressure sensor is detected in the current vehicle driving cycle; When the above conditions are met simultaneously, it is determined that it is in a steady-state working condition.

3. The rationality fault detection method for the periodic oscillation of the GPF differential pressure sensor according to claim 1, characterized in that: The stability condition is that the time continuously in the steady-state working condition exceeds a certain duration.

4. The rationality fault detection method for the periodic oscillation of the GPF differential pressure sensor according to claim 1, characterized in that: The method for obtaining the filtered value of the GPF inlet pressure and the filtered value of the GPF outlet pressure is as follows. pGPFInletFilter(N) = K GPFInlet × [p GPFInlet (N) - pGPFInletFilter(N - 1)] + pGPFInletFilter(N - 1) pGPFOutletFilter(N) = K GPFOutlet × [p GPFOutlet (N) - pGPFOutletFilter(N - 1)] + pGPFOutletFilter(N - 1) where p GPFInlet (N) is the original value of the GPF inlet pressure at the Nth sampling period, pGPFInletFilter(N) is the filtered value of the GPF inlet pressure at the Nth sampling period, and pGPFInletFilter(N - 1) is the filtered value of the GPF inlet pressure at the (N - 1)th sampling period; p GPFOutlet (N) is the original value of the GPF outlet pressure at the Nth sampling period, pGPFInletFilter(N) is the filtered value of the GPF outlet pressure at the Nth sampling period, and pGPFOutletFilter(N - 1) is the filtered value of the GPF outlet pressure at the (N - 1)th sampling period; N is a positive integer; the sampling period interval is Δt; K GPFInlet is the GPF inlet pressure filtering coefficient, K GPFOutlet is the GPF outlet pressure filtering coefficient, and satisfies In the above formula, m is the number of engine cylinders, n is the engine speed, and both f1(n) and f2(n) are calibrated based on the engine speed.

5. The rationality fault detection method for the periodic oscillation of the GPF differential pressure sensor according to claim 1, characterized in that: The process of judging whether there is a reasonable fault of periodic oscillation in the GPF differential pressure sensor according to the time interval between the extreme values of the filtered GPF inlet pressure at different times and the time interval between the extreme values of the filtered GPF outlet pressure at different times is as follows; The time interval between the maximum value of the filtered GPF inlet pressure in a certain sampling period and the maximum value of the filtered GPF inlet pressure in the previous sampling period of the same sampling period is denoted as the adjacent maximum value time interval tGPFInletMaxInterval of the filtered GPF inlet pressure in this sampling period; the time interval between the minimum value of the filtered GPF inlet pressure in a certain sampling period and the minimum value of the filtered GPF inlet pressure in the previous sampling period of the same sampling period is denoted as the adjacent minimum value time interval tGPFInletMinInterval of the filtered GPF inlet pressure in this sampling period; Calculate the average value of the time intervals between adjacent maximum values of the GPF inlet pressure filtered value and the time intervals between adjacent minimum values of the GPF inlet pressure filtered value, namely tGPFInletMaxInterval and tGPFInletMinInterval, according to different sampling periods Average time interval between adjacent minimum values of GPF inlet pressure filtered value If satisfied, Then it is judged that there is a reasonable fault of periodic oscillation in the GPF differential pressure sensor, where rMaxDiffLimit is a preset value; The time interval between the maximum value of the filtered GPF outlet pressure in a certain sampling period and the maximum value of the filtered GPF outlet pressure in the previous sampling period of the same sampling period is denoted as the adjacent maximum value time interval tGPFOutletMaxInterval of the filtered GPF outlet pressure in this sampling period; the time interval between the minimum value of the filtered GPF outlet pressure in a certain sampling period and the minimum value of the filtered GPF outlet pressure in the previous sampling period of the same sampling period is denoted as the adjacent minimum value time interval tGPFOutletMinInterval of the filtered GPF outlet pressure in this sampling period; According to the time interval tGPFOutletMaxInterval between adjacent maximum values and the time interval tGPFOutletMinInterval between adjacent minimum values of the filtered GPF outlet pressure at different sampling periods, calculate the average value of the time interval between adjacent maximum values of the filtered GPF outlet pressure respectively Time interval between adjacent minimum values of the filtered GPF outlet pressure If satisfied, Then it is judged that there is a reasonable fault of periodic oscillation in the GPF differential pressure sensor; Average of the time intervals between adjacent maximum values of the GPF inlet pressure filtered value Time interval between adjacent minimum values of the filtered GPF inlet pressure Obtain the GPF inlet pressure oscillation period tGPFInletCycle, specifically as follows; Based on the average value of the time intervals between adjacent maximum values of the filtered GPF outlet pressure Time interval between adjacent minimum values of the filtered GPF outlet pressure Obtain the GPF outlet pressure oscillation period tGPFOutletCycle, specifically as follows; If satisfied; It is determined that there is a reasonable fault of periodic oscillation in the GPF differential pressure sensor, where f(T GPFBrick ,r GPFSoot ) is determined by the GPF body temperature T GPFBrick and the soot accumulation coefficient r GPFSoot together. The soot accumulation coefficient r GPFSoot is obtained according to the current actual carbon amount m_Soot of the GPF and the upper limit value m_SootCapacity of the GPF carbon loading, specifically r Adpat is the self-learning correction coefficient, and r Adpat has an initial value of 0, is updated according to self-learning, and is saved after the vehicle is powered off.

6. The rationality fault detection method for the periodic oscillation of the GPF differential pressure sensor according to claim 5, wherein: Average time interval between adjacent maxima of filtered GPF inlet pressure value Average time interval between adjacent minima of filtered GPF inlet pressure value The acquisition process is as follows; If the time interval tGPFInletMaxInterval between adjacent maximum values of the GPF inlet pressure filtering value in the current sampling period is less than a preset value A 11 , and the time difference between the tGPFInletMaxInterval in the current sampling period and the tGPFInletMaxInterval in other sampling periods is less than a preset value B 11 , then the tGPFInletMaxInterval in the current sampling period is excluded and not allowed to participate in Calculation of; where A 11 is related to the engine speed n, and B 11 is a certain multiple of the average value of tGPFInletMaxInterval for other sampling periods; If during the continuous sampling of the GPF inlet / outlet pressure, the number of occurrences of the event "the time interval tGPFInletMaxInterval between adjacent maximum values of the filtered GPF inlet pressure in the current sampling period is less than the preset value A" 11 accumulates and exceeds the preset number CNT 11 , then it is determined that there is a reasonable fault of periodic oscillation in the GPF differential pressure sensor; If the time interval tGPFInletMaxInterval between adjacent maximum values of the GPF inlet pressure filtering value in the current sampling period is greater than a preset value A 21 , and the time difference between the tGPFInletMaxInterval in the current sampling period and the tGPFInletMaxInterval in other sampling periods is greater than a preset value B 21 , then the tGPFInletMaxInterval in the current sampling period is removed and not allowed to participate in Calculation of; where A 21 is related to the engine speed n, and B 21 is a certain multiple of the average value of tGPFInletMaxInterval for other sampling periods; If during the continuous sampling of the GPF inlet / outlet pressure, the number of occurrences of the event "the time interval tGPFInletMaxInterval between adjacent maximum values of the filtered GPF inlet pressure in the current sampling period is greater than the preset value A" accumulates and exceeds the preset number CNT 21 ", it is determined that there is a reasonable fault of periodic oscillation in the GPF differential pressure sensor; 21 ​ Take the average of tGPFInletMaxInterval for the remaining sampling periods after culling to obtain If the time interval tGPFInletMinInterval between adjacent minimum values of the GPF inlet pressure filtering value in the current sampling period is less than a preset value A 31 , and the time difference between the tGPFInletMinInterval in the current sampling period and the tGPFInletMinInterval in other sampling periods is less than a preset value B 31 , then the tGPFInletMinInterval in the current sampling period is excluded and not allowed to participate in Calculation of; where A 31 is related to the engine speed n, B 31 is a certain multiple of the average value of tGPFInletMinInterval for other sampling periods; If during the continuous sampling of the GPF inlet / outlet pressure, the number of occurrences of the event "the time interval tGPFInletMinInterval between adjacent maximum values of the filtered GPF inlet pressure in the current sampling period is less than the preset value A" accumulates and exceeds the preset number CNT 31 ", then it is determined that there is a reasonable fault of periodic oscillation in the GPF differential pressure sensor; 31 ​ If the time interval tGPFInletMinInterval between adjacent minimum values of the GPF inlet pressure filtering value in the current sampling period is greater than a preset value A 41 , and the time difference between the tGPFInletMinInterval in the current sampling period and the tGPFInletMinInterval in other sampling periods is greater than a preset value B 41 , then the tGPFInletMinInterval in the current sampling period is excluded so that it does not participate in Calculation of; where A 41 is related to the engine speed n, B 41 is a certain multiple of the average value of tGPFInletMinInterval of other sampling periods; if during the continuous sampling of the GPF inlet / outlet pressure, the event "the filtered value of the GPF inlet pressure in the current sampling period is adjacent to the extreme The large value time interval tGPFInletMinInterval is greater than the preset value A 41 The cumulative number of occurrences exceeds the preset number CNT 41 Then it is determined that there is a rationality fault of periodic oscillation in the GPF differential pressure sensor; Take the average value of tGPFInletMinInterval of the remaining sampling periods after culling to obtain 7. The rationality fault detection method for the periodic oscillation of the GPF differential pressure sensor according to claim 5, characterized in that: Average time interval between adjacent maximum values of the filtered GPF outlet pressure Average time interval between adjacent minimum values of the filtered GPF outlet pressure The acquisition process is as follows; If the time interval tGPFOutletMaxInterval between adjacent maximum values of the GPF outlet pressure filtering value in the current sampling period is less than a preset value A 12 , and the time difference between the tGPFOutletMaxInterval in the current sampling period and the tGPFOutletMaxInterval in other sampling periods is less than a preset value B 12 , then the tGPFOutletMaxInterval in the current sampling period is excluded so that it does not participate in Calculation; where A 12 is related to the engine speed n, and B 12 is a certain multiple of the average value of tGPFOutletMaxInterval of other sampling periods; if during the continuous sampling of the GPF inlet / outlet pressure, the number of occurrences of the event "the time interval tGPFOutletMaxInterval between adjacent maximum values of the filtered GPF outlet pressure in the current sampling period is less than the preset value A 12 " accumulatively exceeds the preset number CNT 12 , it is determined that there is a reasonable fault of periodic oscillation in the GPF differential pressure sensor; If the time interval tGPFOutletMaxInterval between adjacent maximum values of the GPF outlet pressure filtering value in the current sampling period is greater than a preset value A 22 , and the time difference between the tGPFOutletMaxInterval in the current sampling period and the tGPFOutletMaxInterval in other sampling periods is greater than a preset value B 22 , then the tGPFOutletMaxInterval in the current sampling period is removed so that it does not participate in Calculation; where A 22 is related to the engine speed n, and B 22 is a certain multiple of the average value of tGPFOutletMaxInterval for other sampling periods; if during the continuous sampling of the GPF inlet / outlet pressure, the number of occurrences of the event "the time interval tGPFOutletMaxInterval between adjacent maximum values of the filtered GPF outlet pressure in the current sampling period is greater than the preset value A 22 " accumulates and exceeds the preset number CNT 22 , it is determined that there is a reasonable fault of periodic oscillation in the GPF differential pressure sensor; Take the average of tGPFOutletMaxInterval of the remaining sampling periods after culling to obtain If the time interval tGPFOutletMinInterval between adjacent minimum values of the GPF outlet pressure filtering value in the current sampling period is less than a preset value A 32 , and the time difference between the tGPFOutletMinInterval in the current sampling period and the tGPFOutletMinInterval in other sampling periods is less than a preset value B 32 , then the tGPFOutletMinInterval in the current sampling period is excluded and not allowed to participate in Calculation of Calculation; where A 32 is related to the engine speed n, and B 32 is a certain multiple of the average value of tGPFOutletMinInterval for other sampling periods; if during the continuous sampling of the GPF inlet / outlet pressure, the number of occurrences of the event "the time interval tGPFOutletMinInterval between adjacent maximum values of the filtered GPF outlet pressure in the current sampling period is less than the preset value A 32 " accumulates and exceeds the preset number CNT 32 , it is determined that there is a reasonable fault of periodic oscillation in the GPF differential pressure sensor; If the time interval tGPFOutletMinInterval between adjacent minimum values of the GPF outlet pressure filtering value in the current sampling period is greater than a preset value A 42 , and the time difference between the tGPFOutletMinInterval in the current sampling period and the tGPFInletMinInterval in other sampling periods is greater than a preset value B 42 , then the tGPFOutletMinInterval in the current sampling period is excluded so that it does not participate in Calculation; where A 42 is related to the engine speed n, and B 42 is a certain multiple of the average value of tGPFOutletMinInterval of other sampling periods; if during the continuous sampling of the GPF inlet / outlet pressure, the number of occurrences of the event "the time interval tGPFOutletMinInterval between adjacent maximum values of the filtered value of the GPF inlet pressure in the current sampling period is greater than the preset value A 42 " accumulates and exceeds the preset number CNT 42 , it is determined that there is a reasonable fault of periodic oscillation in the GPF differential pressure sensor; Take the average value of tGPFOutletMinInterval of the remaining sampling periods after culling to obtain 8. The rationality fault detection method for the periodic oscillation of the GPF differential pressure sensor according to claim 5, characterized in that: Self-learning correction coefficient r Adpat The self-learning update process is as follows; Determine whether it is currently in the self-learning working condition. If so, read the cumulative carbon amount coefficient rGPFSootBegin at the initial moment under the self-learning working condition, and obtain the duration t1 of the moment when the value of the cumulative carbon amount coefficient r changes from rGPFSootBegin to 0; GPFSoot The value of According to t1, T GPFBrick , rGPFSootBegin to update the self-learning correction coefficient r Adpat for updating.

9. The rationality fault detection method for the periodic oscillation of the GPF differential pressure sensor according to claim 8, characterized in that: The self-learning working condition determination conditions are specifically as follows. a) The engine is in a running state; b) The engine speed fluctuation amount is within a certain range; c) The vehicle speed exceeds a certain value; d) Cumulative carbon content coefficient r GPFSoot not exceeding a certain value; e) The GPF body temperature is not lower than a certain value; f) The intake density fluctuation amount of the fresh air entering the cylinder is within a certain range; g) The target air-fuel ratio fluctuation amount is within a certain range; h) The difference fluctuation amount between the target air-fuel ratio and the actual air-fuel ratio is within a certain range; i) The actual air-fuel ratio fluctuation amount is within a certain range; j) The engine water temperature is within a certain range, and after detecting the reasonable fault of periodic oscillation of the GPF differential pressure sensor, the engine water temperature fluctuation amount is within a certain range; k) The intake air temperature is within a certain range, and after detecting the reasonable fault of periodic oscillation of the GPF differential pressure sensor, the intake air temperature fluctuation amount is within a certain range; l) The ignition angle efficiency fluctuation amount is within a certain range; m) No knocking occurs and no pre-ignition occurs; n) The GPF body temperature fluctuation amount is within a certain range; o) Both the pre-catalyst oxygen sensor and the post-catalyst oxygen sensor have completed heating activation; p) The atmospheric pressure fluctuation amount is within a certain range; q) No misfire fault occurs; r) No electrical fault occurs in the GPF differential pressure sensor; s) No fault occurs in any of the GPF temperature sensors; t) No rationality fault of the periodic oscillation of the GPF differential pressure sensor is detected during the current vehicle driving cycle; When the above conditions are satisfied simultaneously, it is determined that the self-learning working condition is in effect.

10. The rationality fault detection method for the periodic oscillation of the GPF differential pressure sensor according to claim 8, characterized in that: According to t1, T GPFBrick , and rGPFSootBegin, the process of updating the self-learning correction coefficient r Adpat is specifically as follows; If t1 > t Base × f1(rGPFSootBegin, T GPFBrick ), where t Base is the base time, and f1(rGPFSootBegin, T GPFBrick ) is calibrated according to T GPFBrick and rGPFSootBegin; then the update method for r Adpat is: r Adpat = r Adpat (z) - k1 × f1(rGPFSootBegin, T GPFBrick ); where k1 is the first gain coefficient, and r Adpat (z) is the self-learning correction coefficient stored in the previous update. If t1 < t Base × f2(rGPFSootBegin, T GPFBrick ), where f2(rGPFSootBegin, T GPFBrick ) is calibrated according to T GPFBrick and rGPFSootBegin; then r Adpat is updated as r Adpat = r Adpat (z) - k2 × f2(rGPFSootBegin, T GPFBrick ); where k2 is the second gain coefficient; If t Base × f2(rGPFSootBegin, T GPFBrick ) < t1 < t Base × f1(rGPFSootBegin, T GPFBrick ), then r Adpat remains unchanged; if the number of times this condition is met If it exceeds a certain number of times, then r Adpat = r Adpat (z) + k3; where k3 is the third gain system number; The counting update method is that when the condition t Base ×f2(rGPFSootBegin, T GPFBrick ) < t1 < t Base ×f1(rGPFSootBegin, T GPFBrick ) is satisfied, it increments by one, and in each driving cycle Increment by at most one when r Adpat After update Clear to zero.

11. An electronic device, comprising a memory, a processor, and a program stored on the memory and executable on the processor, wherein when the processor executes the program, the method according to any one of claims 1 to 10 is implemented.

12. An automobile, characterized in that: Comprising the electronic device according to claim 11.

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