Abnormality detection method, system, device and storage medium applied to engine system

Abstract

The application provides an abnormality detection method, system, device and storage medium applied to an engine system, and belongs to the technical field of engine control. The method comprises the following steps: obtaining a supercharging pressure difference between a target supercharging pressure and an actual supercharging pressure; when the time when the engine system simultaneously satisfies all preset conditions exceeds a preset time threshold, reading the supercharging pressure difference in a plurality of continuous sampling periods to form an array; when it is identified that a supercharging pressure overhigh fault occurs in an engine system in a driving cycle, determining the fault degree of the supercharging pressure overhigh fault; and according to the fault degree of the supercharging pressure overhigh fault determined in the driving cycle, executing a corresponding processing strategy and updating the sampling period V1 in the driving cycle. Through the technical scheme in the application, the supercharging pressure overhigh fault can be identified.

Description

Technical Field

[0001] This invention relates to the field of engine control technology, and in particular to an anomaly detection method, system, device, and storage medium for engine systems. Background Technology

[0002] Hybrid engines are the mainstream type of engine on the market, and EGR technology is a key technology for achieving high thermal efficiency. The gas pressure on both sides of the EGR valve (inlet and outlet) is a crucial input for EGR rate control, determining the estimation of exhaust gas flow and the accuracy of EGR valve opening control, thus affecting the precision of the EGR rate. Therefore, it is necessary to promptly check whether the EGR valve inlet gas pressure signal is normal to avoid affecting EGR rate control and causing adverse effects on engine performance. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art, and proposes an anomaly detection method, system, device and storage medium for engine systems.

[0004] In a first aspect, embodiments of the present invention provide an anomaly detection method applied to an engine system, the method comprising:

[0005] Obtain the target boost pressure and the actual boost pressure, and calculate the boost pressure difference between the two based on the target boost pressure and the actual boost pressure;

[0006] Real-time monitoring of whether the engine system simultaneously meets all preset conditions, and when the time for the engine system to simultaneously meet all preset conditions exceeds a preset time threshold, reading the boost pressure difference of the most recent consecutive sampling cycles to form an array;

[0007] Calculate the estimated boost pressure difference corresponding to the boost pressure difference of the first V1 sampling periods in the array;

[0008] Based on the boost pressure difference of the first V1 sampling cycles in the array, the estimated boost pressure difference corresponding to the boost pressure difference of the first V1 sampling cycles, and the target boost pressure, and when it is determined that the engine system has a boost pressure too high fault in a driving cycle, the degree of the boost pressure too high fault is determined.

[0009] Based on the severity of the overpressure fault determined in the driving cycle, the corresponding handling strategy is executed, and the sampling period V1 is updated in the driving cycle.

[0010] In some embodiments, all the preset conditions include:

[0011] Condition 1: The fluctuation of the target intake pressure does not exceed the first preset fluctuation threshold.

[0012] Condition 2: The engine intake air volume has not reached the engine's maximum air volume;

[0013] Condition 3: The fluctuation of the target boost pressure does not exceed the second preset fluctuation threshold.

[0014] Condition 4: The rate of change of engine speed is not lower than the first preset rate of change value;

[0015] Condition 5: The rate of change of cylinder intake air density is not lower than the second preset rate of change value;

[0016] Condition 6: The rate of change of the opening of the booster actuator shall not be lower than the third preset rate of change value;

[0017] Condition 7: The engine is not shut off from fuel;

[0018] Condition 8: The engine did not experience knocking or pre-ignition;

[0019] Condition 9: No component failures have occurred in the intake system.

[0020] In some embodiments, the estimated boost pressure difference corresponding to the boost pressure difference in any of the first V1 sampling periods in the array is expressed as:

[0021]

[0022] in, (i=0,1,2,……,V1-1) represents the pressure difference of any sampling period in the first V1 sampling periods of the array. For trend filtering time, The time interval between adjacent sampling periods. This is the estimated boost pressure difference corresponding to the boost pressure difference.

[0023] In some embodiments, determining the degree of the excessive boost pressure fault when determining that the engine system has a fault of excessive boost pressure in a driving cycle includes:

[0024] If, in the first V1 sampling periods, the difference between the boost pressure difference and the corresponding estimated boost pressure difference in each sampling period is not less than 0, and the proportion of the sampling period corresponding to the target boost pressure under the preset threshold in the first V1 sampling periods exceeds the first preset proportion threshold, then a minor fault of excessive boost pressure is considered to have occurred.

[0025] If, in the first V1 sampling periods, the difference between the boost pressure difference and the corresponding estimated boost pressure difference in each sampling period is not less than 0, and the proportion of the sampling period corresponding to the target boost pressure under the preset threshold in the first V1 sampling periods exceeds the second preset proportion threshold, then a moderate fault of excessive boost pressure is considered to have occurred.

[0026] If, in the first V1 sampling periods, the difference between the boost pressure difference and the corresponding estimated boost pressure difference in each sampling period is not less than 0, and each difference is greater than or equal to the target boost pressure under the preset threshold, then a severe fault of excessive boost pressure is considered to have occurred.

[0027] In some embodiments, the step of executing a corresponding processing strategy based on the degree of overpressure failure determined in the driving cycle, and updating the sampling period V1 in the driving cycle, includes:

[0028] If a minor fault of excessive boost pressure is determined to have occurred in the driving cycle, the target opening of the P-term turbine actuator is updated, and the sampling period V1 is subtracted from the first preset period threshold as the updated sampling period V1.

[0029] If a moderate fault of excessive boost pressure is determined to have occurred in the driving cycle, the target boost pressure is reduced and the increment of the target opening of the turbine actuator in item I is updated. The sampling period V1 is then subtracted from the second preset period threshold to obtain the updated sampling period V1.

[0030] If a severe fault of excessive boost pressure is determined to have occurred in the driving cycle, the target intake pressure and target boost pressure are reduced, the increment of the target opening of the turbine actuator in item I is updated, and the sampling period V1 is subtracted from the third preset period threshold to obtain the updated sampling period V1.

[0031] In some embodiments, it also includes:

[0032] If, in the first V1 sampling periods, the difference between the boost pressure difference in at least one sampling period and the corresponding estimated boost pressure difference is less than 0, then no fault is considered to have occurred.

[0033] Alternatively, if in the first V1 sampling periods, the difference between the boost pressure difference and the corresponding estimated boost pressure difference in each sampling period is not less than 0, but does not fall under any of the following categories: mild failure due to excessive boost pressure, moderate failure due to excessive boost pressure, and severe failure due to excessive boost pressure, then no failure is considered to have occurred.

[0034] If no faults are determined to occur in the driving cycle, the number of fault-free occurrences in multiple driving cycles is accumulated; and when the accumulated number of fault-free occurrences is greater than the first preset number threshold, the sampling period V1 is added to the fourth preset period threshold as the updated sampling period V1.

[0035] Furthermore, in a single driving cycle, only the highest priority boost pressure situation is determined, with the priorities from highest to lowest as follows: severe failure due to excessive boost pressure, moderate failure due to excessive boost pressure, mild failure due to excessive boost pressure, and no failure.

[0036] In some embodiments, it also includes:

[0037] If the number of driving cycles in which a severe fault of excessive boost pressure occurs exceeds the second preset threshold, it is considered that an excessive pressure fault has occurred in the engine system.

[0038] If the number of driving cycles in which a severe fault of excessive boost pressure occurs does not exceed the second preset threshold, then the engine system is considered to be without fault.

[0039] Secondly, embodiments of the present invention provide an anomaly detection system applied to an engine system, the system comprising:

[0040] The acquisition module is used to acquire the target boost pressure and the actual boost pressure, and to obtain the boost pressure difference between the two based on the target boost pressure and the actual boost pressure;

[0041] The monitoring module is used to monitor in real time whether the engine system meets all preset conditions at the same time, and when the time for the engine system to meet all preset conditions at the same time exceeds a preset time threshold, it reads the boost pressure difference of the most recent consecutive sampling cycles to form an array.

[0042] The calculation module is used to calculate the estimated boost pressure difference corresponding to the boost pressure difference of the first V1 sampling periods in the array;

[0043] The determination module is used to determine the degree of excessive boost pressure based on the boost pressure difference of the first V1 sampling cycles in the array, the estimated boost pressure difference corresponding to the boost pressure difference of the first V1 sampling cycles, and the target boost pressure. When determining that the engine system has a fault of excessive boost pressure in a driving cycle, the module determines the degree of the fault of excessive boost pressure.

[0044] The execution module is used to execute the corresponding processing strategy based on the degree of fault of excessive boost pressure determined in the driving cycle, and update the sampling period V1 in the driving cycle.

[0045] Thirdly, embodiments of the present invention provide an electronic device, the electronic device comprising:

[0046] At least one processor; and a memory communicatively connected to the at least one processor;

[0047] The memory stores a computer program that can be executed by at least one processor, such that the at least one processor is able to perform the steps of the method according to any embodiment of the present invention.

[0048] Fourthly, embodiments of the present invention provide a computer-readable storage medium storing computer instructions that are used to cause a processor to execute the steps of any embodiment of the method of the present invention.

[0049] Compared with the prior art, the present invention has the following advantages:

[0050] The anomaly detection method for engine systems provided by this invention first obtains the boost pressure difference between the target boost pressure and the actual boost pressure. Then, when the time it takes for the engine system to simultaneously meet all preset conditions exceeds a preset time threshold, the boost pressure differences from the most recent consecutive sampling cycles are read to form an array. Next, based on the boost pressure differences, estimated boost pressure differences, and target boost pressure in the array, and when a boost pressure overshoot fault is determined in a driving cycle, the severity of the overshoot fault is determined. Finally, based on the severity of the overshoot fault determined in the driving cycle, a corresponding processing strategy is executed, and the sampling cycle V1 is updated in that driving cycle. Through the technical solution of this invention, overshoot faults can be identified, thereby promptly verifying whether the EGR valve inlet gas pressure signal is normal, avoiding impact on EGR rate control, and thus preventing EGR from causing adverse effects on engine performance. Attached Figure Description

[0051] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only preferred embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0052] Figure 1 A schematic diagram of an engine system provided in an embodiment of the present invention;

[0053] Figure 2 This is a flowchart illustrating an anomaly detection method for an engine system provided in an embodiment of the present invention.

[0054] Figure 3 A flowchart illustrating a method for determining a boost pressure malfunction, provided as an embodiment of the present invention;

[0055] Figure 4 This is a schematic diagram of the structure of an anomaly detection system applied to an engine system, provided by an embodiment of the present invention.

[0056] Figure 5 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0057] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0058] To enable those skilled in the art to better understand the technical solutions of the present invention, exemplary embodiments of the present invention are described below in conjunction with the accompanying drawings, including various details of the embodiments of the present invention to aid understanding. These should be considered merely exemplary. Therefore, those skilled in the art should recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0059] Where there is no conflict, the various embodiments of the present invention and the features thereof may be combined with each other.

[0060] As used herein, the term “and / or” includes any and all combinations of one or more related enumerated entries.

[0061] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used herein, the singular forms “a” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that when the terms “comprising” and / or “made of” are used in this specification, the presence of the stated feature, integral, step, operation, element, and / or component is specified, but the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof is not excluded. Terms such as “connected” or “linked” are not limited to physical or mechanical connections but can include electrical connections, whether direct or indirect.

[0062] Unless otherwise specified, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having the meaning consistent with their meaning in the context of the relevant art and the invention, and will not be interpreted as having an idealized or overly formal meaning unless expressly so defined herein.

[0063] In the technical solution of this invention, the collection, storage, use, processing, transmission, provision, and disclosure of user personal information all comply with relevant laws and regulations and do not violate public order and good morals. The use of user data in this technical solution follows relevant national laws and regulations (e.g., the "Information Security Technology - Personal Information Security Specification"). For example: appropriate measures are taken for personal information access control; restrictions are imposed on the display of personal information; the purpose of using personal information does not exceed the scope of direct or reasonable association; and explicit identity targeting is eliminated when using personal information to avoid precisely locating a specific individual.

[0064] Before introducing the technical solution of this application, it should be noted that the following solutions exist in the prior art for fault diagnosis of engine systems:

[0065] 1) The actuator's responsiveness is determined by comparing the rate of change of the slow response state under dynamic conditions using the time integral rate of change. A longer slow response time under dynamic conditions indicates a responsiveness diagnostic fault. However, this scheme uses a general fault detection threshold, resulting in low diagnostic accuracy.

[0066] 2) This approach involves directing compressed air through the EGR passage housing the EGR valve while the vehicle is in the ignition-off state, and indicating EGR valve deterioration based on estimated changes in EGR pressure as the EGR valve position changes. However, this method requires the use of compressed air via an electric supercharger to perform the diagnostic work, adding extra cost.

[0067] Based on this, the technical solution of this application aims to at least solve the technical defects existing in the prior art.

[0068] Figure 1 This is a schematic diagram of the structure of an engine system provided in an embodiment of the present invention, as shown below. Figure 1As shown, an engine system generally includes an air filter 1; a mixing valve 2 connected to the air filter, configured to regulate the pressure at the outlet of the EGR valve 10, increasing the pressure difference across the EGR valve 10, with two airflow passages extending from the mixing valve 2; a compressor 3 connected to one of the airflow passages of the mixing valve 2; a throttle valve 4 connected to the compressor 3, wherein the throttle valve 4 has a boost temperature and pressure sensor at its inlet and an intake air temperature and pressure sensor at its outlet, and the throttle valve 4 body has a position sensor and an actuator; an engine 5 connected to the throttle valve 4, configured to compress fresh air for boosting; a turbine 6 connected to the engine 5, configured to control the opening of the exhaust bypass valve; a catalytic converter 7 connected to the turbine 6; and a gasline particulate filter connected to the catalytic converter 7. Filter (GPF) 8; EGR cooler 9 installed on another airflow path of mixing valve 2, configured to receive and cool the exhaust gas output from particulate filter 8, thereby increasing exhaust gas flow rate; EGR valve 10 connected at one end to EGR cooler 9 and at the other end to mixing valve 2, configured to control the exhaust gas flow rate entering cylinder; temperature sensor 11 installed between EGR valve 10 and EGR cooler 9, configured to detect the exhaust gas temperature entering EGR valve 10; differential pressure sensor 12 connected to EGR valve 10 (including a pressure sensor capable of determining the inlet pressure and a pressure sensor capable of determining the outlet pressure), configured to detect the pressure at the inlet and outlet of EGR valve 10.

[0069] The working state of the mixing valve 2, the particulate filter 8, and the EGR valve 10 directly affects the EGR rate of the entire engine system. Therefore, the mixing valve 2, the particulate filter 8, and the EGR valve 10 together constitute the EGR subsystem within the engine system.

[0070] Figure 2 This is a flowchart illustrating an anomaly detection method for an engine system provided by an embodiment of the present invention. This method is particularly suitable for scenarios involving the verification of the EGR valve inlet pressure signal of an EGR system. This method can be executed by an anomaly detection system applied to an engine system. This system can be implemented in software and / or hardware and can be configured in an electronic device.

[0071] like Figure 2 As shown, the method specifically includes:

[0072] S1, obtain the target boost pressure and the actual boost pressure, and obtain the boost pressure difference between the two based on the target boost pressure and the actual boost pressure.

[0073] It should be noted that the target boost pressure refers to the target value of a boost control system. Optimizing the control of the target boost pressure improves the stability of the boost closed-loop control and the accuracy of the EGR response. The actual boost pressure refers to the actual value of a boost control system. With both the target and actual values, the actual value is controlled to follow the target value based on closed-loop control. In boost closed-loop control, the boost actuator is actively controlled to achieve the following between the actual and target boost pressures. However, in boost non-closed-loop control, the opening of the boost actuator is not actively controlled.

[0074] Specifically, in some embodiments, the method for obtaining the target boost pressure in step S1 can be found in Chinese Patent Publication No. CN119491778A. Only a portion of the content for obtaining the target boost pressure is shown here, as follows:

[0075] When the boosting closed-loop enable condition is met, the boosting closed-loop enable is entered. The filter EGR rate characteristic coefficient after the first-order low-pass filter is obtained according to the filter time and EGR rate characteristic coefficient. The target boosting pressure without dynamic optimization is calculated based on the currently disclosed target boosting pressure, the EGR rate characteristic coefficient and the filter EGR rate characteristic coefficient.

[0076] The target boost pressure that was not dynamically optimized is dynamically optimized based on the actual boost pressure read in real time, so as to obtain the target boost pressure after dynamic optimization.

[0077] The dynamically optimized target boost pressure is the target boost pressure obtained in this technical solution, denoted as... .

[0078] Furthermore, in some embodiments, the actual boost pressure is obtained by measuring the intake pressure at the throttle inlet. As the actual boost pressure , represented as: .

[0079] In some embodiments, obtaining the boost pressure difference between the target boost pressure and the actual boost pressure includes: subtracting the actual boost pressure from the target boost pressure to obtain the boost pressure difference, denoted as . .

[0080] S2 monitors in real time whether the engine system meets all preset conditions simultaneously, and when the time for the engine system to meet all preset conditions simultaneously exceeds a preset time threshold, reads the boost pressure difference of the most recent consecutive sampling cycles to form an array.

[0081] In some embodiments, all preset conditions include:

[0082] Condition 1: The fluctuation of the target intake pressure does not exceed the first preset fluctuation threshold.

[0083] Condition 2: The engine intake air volume has not reached the engine's maximum air volume;

[0084] Condition 3: The fluctuation of the target boost pressure does not exceed the second preset fluctuation threshold.

[0085] Condition 4: The rate of change of engine speed is not lower than the first preset rate of change value;

[0086] Condition 5: The rate of change of cylinder intake air density is not lower than the second preset rate of change value;

[0087] Condition 6: The rate of change of the opening of the booster actuator shall not be lower than the third preset rate of change value;

[0088] Condition 7: The engine is not shut off from fuel;

[0089] Condition 8: The engine did not experience knocking or pre-ignition;

[0090] Condition 9: No component failures have occurred in the intake system.

[0091] Specifically, in some embodiments, the method for obtaining the target intake pressure in condition one can be found in Chinese patent publication CN111219243A, which indicates that the target intake pressure can be obtained using a conventional algorithm of existing PID boost closed-loop control. Condition one requires that the fluctuation of the target intake pressure be small; for example, the first preset fluctuation threshold can be set to 2 kPa, that is, the fluctuation of the target intake pressure is within ±2 kPa.

[0092] Specifically, in some embodiments, the method for obtaining the maximum air volume of the engine in condition two can be found in Chinese patent publication number CN114048680A, which will not be repeated here.

[0093] Specifically, in some embodiments, condition three requires that the fluctuation of the target boost pressure be small. For example, the second preset fluctuation threshold can be set to 2 kPa, that is, the fluctuation of the target boost pressure is within ±2 kPa.

[0094] Specifically, in some embodiments, condition four requires that the rate of change of engine speed is not lower than a preset value. For example, the first preset rate of change value can be set to 10 rpm / ms, that is, the rate of change of engine speed is greater than or equal to 10 rpm / ms.

[0095] Specifically, in some embodiments, condition five requires that the rate of change of fresh air density entering the cylinder is not lower than a preset value. For example, the second preset rate of change value can be set to 5 mg / ms, that is, the rate of change of cylinder air density is greater than or equal to 5 mg / ms.

[0096] Specifically, in some embodiments, condition six requires that the rate of change of the booster actuator opening be no less than a preset value. For example, the third preset rate of change value can be set to 1% / ms, that is, the rate of change of the booster actuator opening is greater than or equal to 1% / ms. It should be noted that, theoretically, the higher the opening of the booster actuator, the more exhaust gas energy will be used for boosting.

[0097] Specifically, in some embodiments, condition seven requires that the engine is not de-fueled.

[0098] Specifically, in some embodiments, condition eight requires that the engine does not experience knocking and that there is no pre-ignition.

[0099] Specifically, in some embodiments, condition nine requires that no failure of intake system components has occurred.

[0100] In addition, in some embodiments, when the time for which the engine system simultaneously meets all preset conditions exceeds a preset time threshold, the boost pressure difference of the most recent consecutive V1+2 sampling cycles is read to form an array of length V1+2, and the elements in the array are arranged in reverse chronological order.

[0101] At this point, the array is represented as:

[0102]

[0103] in, The pressure difference during the current sampling period. The pressure difference from the previous sampling period. The pressure difference during the first V1+1 sampling period. The pressure difference during the first V1+2 sampling periods.

[0104] For example, the preset time threshold can be set to 0.5s, and the default value of V1 can be set to 9. The default value of V1 can be continuously updated through self-learning and saved after the vehicle is powered off. The boost pressure difference is read from V1+2 consecutive samples (11 times in this case). Later formed array .

[0105] S3 calculates the estimated boost pressure difference corresponding to the boost pressure difference of the first V1 sampling periods in the array.

[0106] It is understandable that the pressure difference of the first V1 sampling periods in the array is taken, and any element in the first V1 sampling periods is denoted as... (i=0,1,2,……,V1-1), that is, excluding the pressure difference in the first V1+1 sampling period and the first V1+2 sampling period. and The additional boost pressure difference needs to be calculated to obtain the corresponding estimated boost pressure difference.

[0107] It should be noted that although the boost pressure difference of V1+2 sampling cycles is read during the reading phase, the estimated boost pressure difference corresponding to the boost pressure difference of V1 sampling cycles is calculated during the anomaly detection process.

[0108] In some embodiments, the estimated boost pressure difference corresponding to the boost pressure difference in any of the first V1 sampling periods in the array is expressed as:

[0109]

[0110] in, (i=0,1,2,……,V1-1) represents the pressure difference of any sampling period in the first V1 sampling periods of the array. For trend filtering time, The time interval between adjacent sampling periods. This is the estimated boost pressure difference corresponding to the boost pressure difference.

[0111] Furthermore, in some embodiments, the trend filtering time is expressed as:

[0112]

[0113] in, This is the baseline value for the trend filter time. For trend filtering time, For the correction factor one, The correction factor is two. This represents the pressure difference in the next sampling period of any one of the first V1 sampling periods in the array. To increase the pressure to the target, This is the actual atmospheric pressure. Where n is the standard atmospheric pressure and n is the engine speed.

[0114] Specifically, the base value for the trend filter time can be set to 50ms.

[0115] Specifically, based on the boost pressure difference of the next sampling period of any of the previous V1 sampling periods in the array. With target boost pressure The ratio of the two values ​​and the engine speed n are used to obtain the correction factor one.

[0116] Specifically, based on standard atmospheric pressure Compared with actual atmospheric pressure The ratio of the two values ​​and the engine speed n are used to obtain the correction factor two. The standard atmospheric pressure is 101 kPa.

[0117] It should be noted that the calibration of correction factor one and correction factor two was completed on an engine test bench under standard atmospheric pressure to determine the values ​​of n at different engine speeds. Below, under the pressure difference of boosting When maintained at ±2 kPa, and The difference should not exceed ±2 kPa. After calibration, corrections are made under different atmospheric pressures on the actual vehicle to obtain correction factor two, especially when... When the correction factor is 1, the correction factor 2 equals 1.

[0118] S4, based on the boost pressure difference of the first V1 sampling cycles in the array, the estimated boost pressure difference corresponding to the boost pressure difference of the first V1 sampling cycles, and the target boost pressure, and when it is determined that the engine system has a boost pressure too high fault in a driving cycle, the degree of the boost pressure too high fault is determined.

[0119] Figure 3 This invention provides a flowchart illustrating a method for determining a boost pressure fault. In some embodiments, when determining that an engine system has experienced excessive boost pressure during a driving cycle, the degree of the excessive boost pressure fault is determined, including:

[0120] If, in the first V1 sampling periods, the difference between the boost pressure difference and the corresponding estimated boost pressure difference in each sampling period is not less than 0, and the proportion of the sampling period corresponding to the target boost pressure under the preset threshold in the first V1 sampling periods exceeds the first preset proportion threshold, then a minor fault of excessive boost pressure is considered to have occurred.

[0121] If, in the first V1 sampling periods, the difference between the boost pressure difference and the corresponding estimated boost pressure difference in each sampling period is not less than 0, and the proportion of the sampling period corresponding to the target boost pressure under the preset threshold in the first V1 sampling periods exceeds the second preset proportion threshold, then a moderate fault of excessive boost pressure is considered to have occurred.

[0122] The first preset percentage threshold is less than the second preset percentage threshold.

[0123] If, in the first V1 sampling periods, the difference between the boost pressure difference and the corresponding estimated boost pressure difference in each sampling period is not less than 0, and each difference is greater than or equal to the target boost pressure under the preset threshold, then a severe fault of excessive boost pressure is considered to have occurred.

[0124] Specifically, in some embodiments, the difference between the boost pressure difference in all sampling periods within V1 sampling periods and the corresponding estimated boost pressure difference is... All values ​​are not less than 0, and the difference is greater than or equal to the target boost pressure under the preset threshold. The proportion of the sampling period in the first V1 sampling periods exceeds a first preset proportion threshold, which can be set to 0.5. If it can be set to 0.1, then a minor fault of excessive boost pressure has occurred.

[0125] Specifically, in some embodiments, the difference between the boost pressure difference in all sampling periods within V1 sampling periods and the corresponding estimated boost pressure difference is... All values ​​are not less than 0, and the difference is greater than or equal to the target boost pressure under the preset threshold. The proportion of the sampling period in the first V1 sampling periods exceeds the second preset proportion threshold, which can be set to 0.8. If set to 0.1, a moderate fault of excessive boost pressure is considered to have occurred.

[0126] Specifically, in some embodiments, the difference between the boost pressure difference in all sampling periods within V1 sampling periods and the corresponding estimated boost pressure difference is... All values ​​are not less than 0, and the difference is greater than or equal to the target boost pressure under the preset threshold. If the sampling period accounts for 1% of the first V1 sampling periods, that is, if the difference in all sampling periods is greater than or equal to the target boost pressure under the preset threshold, then a severe fault of excessive boost pressure is considered to have occurred.

[0127] S5, based on the degree of fault of excessive boost pressure determined in the driving cycle, execute the corresponding processing strategy and update the sampling period V1 in the driving cycle.

[0128] In some embodiments, based on the severity of the excessive boost pressure determined in the driving cycle, a corresponding processing strategy is executed, and the sampling period V1 is updated in the driving cycle, including:

[0129] If a minor fault of excessive boost pressure is determined to have occurred in the driving cycle, the target opening of the P-term turbine actuator is updated, and the sampling period V1 is subtracted from the first preset period threshold as the updated sampling period V1.

[0130] If a moderate fault of excessive boost pressure is determined to have occurred in the driving cycle, the target boost pressure is reduced and the increment of the target opening of the turbine actuator in item I is updated. The sampling period V1 is then subtracted from the second preset period threshold to obtain the updated sampling period V1.

[0131] If a severe fault of excessive boost pressure is determined to have occurred in the driving cycle, the target intake pressure and target boost pressure are reduced, the increment of the target opening of the turbine actuator in item I is updated, and the sampling period V1 is subtracted from the third preset period threshold to obtain the updated sampling period V1.

[0132] It should be noted that the minimum value of the updated sampling period V1 can be set to 3, and the maximum value can be set to 12.

[0133] Specifically, in some embodiments, when a minor fault of excessive boost pressure occurs, the P-term turbine actuator target opening is immediately updated. At the same time, the sampling period V1 is subtracted from the first preset period threshold to obtain the updated sampling period V1.

[0134] Among them, the target opening degree of the turbine actuator in item P. See Chinese patent publication number CN120798551A. The updated target opening degree of the P-item turbine actuator is expressed as:

[0135]

[0136] in, For the updated P-term turbine actuator target opening, The first correction factor is determined by updating the P term. All of them were able to be improved and maintained within ±2kPa.

[0137] The first preset period threshold can be set to 1. The updated sampling period can then be expressed as: V1 = V1(z) - 1, where V1(z) is the sampling period after the last update.

[0138] Specifically, in some embodiments, when a moderate fault of excessive boost pressure occurs, the target boost pressure is reduced. Simultaneously update the target opening of turbine actuator I. Increment The sampling period V1 is subtracted from the second preset period threshold to obtain the updated sampling period V1.

[0139] The reduced target boost pressure is expressed as:

[0140]

[0141] in, The target boost pressure is reduced.

[0142] Among them, item I is the target opening degree of the turbine actuator. See Chinese patent publication number CN120798551A. Updated Item I: Turbine Actuator Target Opening. Increment , represented as:

[0143]

[0144] in, For the updated I-term turbine actuator target opening increment, The second correction factor is determined by updating term I and reducing the target boost pressure. All of them were able to be improved and maintained within ±2kPa.

[0145] The second preset period threshold can be set to 2. The updated sampling period is then expressed as: V1 = V1(z) - 2, where V1(z) is the sampling period after the last update.

[0146] Specifically, in some embodiments, when a high-altitude fault occurs due to excessively high boost pressure, the target intake pressure is reduced. and target boost pressure Simultaneously update the target opening of turbine actuator I. Increment The sampling period V1 is subtracted from the third preset period threshold to obtain the updated sampling period V1.

[0147] The reduced target intake pressure is expressed as:

[0148]

[0149] in, To reduce the target intake pressure.

[0150] The reduced target boost pressure is expressed as:

[0151]

[0152] in, The target boost pressure is reduced.

[0153] Among them, item I is the target opening degree of the turbine actuator. As with the above, we will not repeat the details here.

[0154] The third preset period threshold can be set to 4. The updated sampling period is then expressed as: V1 = V1(z) - 4, where V1(z) is the sampling period after the last update.

[0155] It is understandable that the update speed of the sampling count for severe faults is faster than that for moderate faults, and the update speed of the sampling count for moderate faults is faster than that for minor faults. This is because the more severe the fault, the faster the fault detection needs to be performed.

[0156] In some embodiments, the anomaly detection method applied to an engine system further includes:

[0157] If, in the first V1 sampling periods, the difference between the boost pressure difference in at least one sampling period and the corresponding estimated boost pressure difference is less than 0, then no fault is considered to have occurred.

[0158] Alternatively, if in the first V1 sampling periods, the difference between the boost pressure difference and the corresponding estimated boost pressure difference in each sampling period is not less than 0, but does not fall under any of the following categories: mild failure due to excessive boost pressure, moderate failure due to excessive boost pressure, and severe failure due to excessive boost pressure, then no failure is considered to have occurred.

[0159] If no faults are determined to occur in the driving cycle, the number of fault-free occurrences in multiple driving cycles is accumulated; and when the accumulated number of fault-free occurrences is greater than the first preset number threshold, the sampling period V1 is added to the fourth preset period threshold as the updated sampling period V1.

[0160] Furthermore, in a single driving cycle, only the highest priority boost pressure situation is determined, with the priorities from highest to lowest as follows: severe failure due to excessive boost pressure, moderate failure due to excessive boost pressure, mild failure due to excessive boost pressure, and no failure.

[0161] It should be noted that each driving cycle will only record one type of boost pressure. The highest priority is given to severe faults caused by excessively high boost pressure, followed by moderate faults caused by excessively high boost pressure, then minor faults caused by excessively high boost pressure, and finally, the lowest priority is given to no faults.

[0162] Specifically, in some embodiments, when the time for which the engine system simultaneously meets all preset conditions exceeds a preset time threshold, but it is determined that no fault has occurred, the number of times no fault has occurred in multiple driving cycles, CNT1, is recorded. When the number of times no fault has occurred in multiple driving cycles is greater than a first preset number threshold, the sampling period V1 is added to a fourth preset period threshold as the updated sampling period V1.

[0163] The default value of CNT1 can be set to 0. The default value of CNT1 can be continuously updated through self-learning and saved after the vehicle is powered off. The first preset number threshold can be set to 5, and the fourth preset period threshold can be set to 3. If CNT1 is greater than the first preset number threshold of 5, the updated sampling period is expressed as: V1 = V1(z) + 3. After the update is completed, CNT1 is cleared to 0.

[0164] It should be noted that after updating the sampling period V1 in the current driving cycle, the updated value is retained in this driving cycle, while the learned value will adopt the updated value at the beginning of the next driving cycle.

[0165] In some embodiments, the anomaly detection method applied to an engine system further includes:

[0166] If the number of driving cycles in which a severe fault of excessive boost pressure occurs exceeds the second preset threshold, it is considered that an excessive pressure fault has occurred in the engine system.

[0167] If the number of driving cycles in which a severe fault of excessive boost pressure occurs does not exceed the second preset threshold, then the engine system is considered to be without fault.

[0168] Specifically, in some embodiments, the second preset threshold number can be set to 3. If the number of driving cycles in which a severe fault occurs exceeds the second preset threshold number, a high-pressure fault is considered to have occurred; otherwise, no fault is considered to have occurred. Furthermore, a fault code is reported after a fault occurs.

[0169] The technical solution in this embodiment of the invention reads the boost pressure difference from multiple recent consecutive sampling cycles, calculates the estimated boost pressure difference corresponding to the boost pressure difference, and then determines the boost pressure fault situation in the engine system during a driving cycle. Finally, based on the boost pressure fault situation, a corresponding processing strategy is executed. Through the technical solution in this embodiment of the invention, it is possible to identify excessive boost pressure faults, determine the parameters in the boost control process based on the fault level, and adjust the boost pressure, thereby improving the accuracy of boost pressure control.

[0170] Based on the same inventive concept, embodiments of the present invention also provide an anomaly detection system applied to an engine system. Figure 4 This is a schematic diagram of the structure of an anomaly detection system applied to an engine system provided in an embodiment of the present invention, as shown below. Figure 4 As shown, the system specifically includes:

[0171] The acquisition module 100 is used to acquire the target boost pressure and the actual boost pressure, and to obtain the boost pressure difference between the two based on the target boost pressure and the actual boost pressure;

[0172] The monitoring module 200 is used to monitor in real time whether the engine system meets all preset conditions at the same time, and when the time for the engine system to meet all preset conditions at the same time exceeds a preset time threshold, it reads the boost pressure difference of the most recent consecutive sampling cycles to form an array.

[0173] The calculation module 300 is used to calculate the estimated boost pressure difference corresponding to the boost pressure difference of the first V1 sampling periods in the array;

[0174] The determination module 400 is used to determine the degree of the excessive boost pressure fault based on the boost pressure difference of the first V1 sampling cycles in the array, the estimated boost pressure difference corresponding to the boost pressure difference of the first V1 sampling cycles, and the target boost pressure. When it is determined that the engine system has a fault of excessive boost pressure in a driving cycle, the determination module 400 is used to determine the degree of the excessive boost pressure fault.

[0175] The execution module 500 is used to execute a corresponding processing strategy based on the degree of fault of excessive boost pressure determined in the driving cycle, and update the sampling period V1 in the driving cycle.

[0176] The technical solutions in the embodiments of the present invention have similar beneficial effects to those described above, and will not be repeated here.

[0177] Based on the same inventive concept, embodiments of the present invention also provide an electronic device. Figure 5 This is a structural block diagram of an electronic device provided in an embodiment of the present invention. Figure 5 As shown, an embodiment of the present invention provides an electronic device including: one or more processors 101, a memory 102, and one or more I / O interfaces 103. The memory 102 stores one or more programs, which, when executed by the one or more processors, cause the one or more processors to implement any of the anomaly detection methods applied to an engine system as described in the above embodiments; the one or more I / O interfaces 103 are connected between the processor and the memory, configured to enable information interaction between the processor and the memory.

[0178] The processor 101 is a device with data processing capabilities, including but not limited to a central processing unit (CPU); the memory 102 is a device with data storage capabilities, including but not limited to random access memory (RAM, more specifically SDRAM, DDR, etc.), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), and flash memory (FLASH); the I / O interface (read / write interface) 103 is connected between the processor 101 and the memory 102, and can realize information interaction between the processor 101 and the memory 102, including but not limited to a data bus (BUS).

[0179] In some embodiments, the processor 101, memory 102, and I / O interface 103 are interconnected via bus 104, and thus connected to other components of the computing device.

[0180] In some embodiments, the one or more processors 101 include a field-programmable gate array.

[0181] This invention also provides a computer-readable medium. The computer-readable medium stores a computer program, which, when executed by a processor, implements the steps of any of the anomaly detection methods applied to an engine system described above. The computer-readable storage medium can be volatile or non-volatile.

[0182] This invention also provides a computer program product, including computer-readable code, or a non-volatile computer-readable storage medium carrying computer-readable code. When the computer-readable code is run in the processor of an electronic device, the processor in the electronic device executes the above-described anomaly detection method applied to an engine system.

[0183] Those skilled in the art will understand that all or some of the steps, systems, and apparatuses disclosed above, and their functional modules / units, can be implemented as software, firmware, hardware, or suitable combinations thereof. In hardware implementations, the division between functional modules / units mentioned above does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed collaboratively by several physical components. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit (ASIC). Such software can be distributed on a computer-readable storage medium, which may include computer storage media (or non-transitory media) and communication media (or transient media).

[0184] As is known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information, such as computer-readable program instructions, data structures, program modules, or other data. Computer storage media includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), static random access memory (SRAM), flash memory or other memory technologies, portable compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, it is known to those skilled in the art that communication media typically contain computer-readable program instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0185] The computer-readable program instructions described herein can be downloaded from computer-readable storage media to various computing / processing devices, or downloaded via a network, such as the Internet, local area network, wide area network, and / or wireless network, to an external computer or external storage device. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers, and / or edge servers. A network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards them to the computer-readable storage media in the respective computing / processing device.

[0186] The computer program instructions used to perform the operations of this invention may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Smalltalk, C++, etc., and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The computer-readable program instructions may be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or may be connected to an external computer (e.g., via the Internet using an Internet service provider). In some embodiments, electronic circuitry, such as programmable logic circuitry, field-programmable gate arrays (FPGAs), or programmable logic arrays (PLAs), is personalized by utilizing state information from the computer-readable program instructions. This electronic circuitry can execute the computer-readable program instructions to implement various aspects of the invention.

[0187] The computer program product described herein can be implemented specifically through hardware, software, or a combination thereof. In one alternative embodiment, the computer program product is specifically embodied in a computer storage medium; in another alternative embodiment, the computer program product is specifically embodied in a software product, such as a software development kit (SDK), etc.

[0188] Various aspects of the present invention are described herein with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-readable program instructions.

[0189] These computer-readable program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that, when executed by the processor of the computer or other programmable data processing apparatus, they create means for implementing the functions / actions specified in one or more blocks of the flowchart and / or block diagram. These computer-readable program instructions can also be stored in a computer-readable storage medium that causes a computer, programmable data processing apparatus, and / or other device to operate in a particular manner; thus, the computer-readable medium storing the instructions comprises an article of manufacture that includes instructions for implementing aspects of the functions / actions specified in one or more blocks of the flowchart and / or block diagram.

[0190] Computer-readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device to cause a series of operational steps to be performed on the computer, other programmable data processing apparatus, or other device to produce a computer-implemented process, thereby causing the instructions executed on the computer, other programmable data processing apparatus, or other device to perform the functions / actions specified in one or more boxes of a flowchart and / or block diagram.

[0191] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of an instruction, which contains one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than those shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0192] Example embodiments have been disclosed herein, and while specific terminology has been used, it is for illustrative purposes only and should be construed as such, and is not intended to be limiting. In some instances, it will be apparent to those skilled in the art that features, characteristics, and / or elements described in conjunction with particular embodiments may be used alone, or in combination with features, characteristics, and / or elements described in conjunction with other embodiments, unless otherwise expressly indicated. Therefore, those skilled in the art will understand that various changes in form and detail may be made without departing from the scope of the invention as set forth in the appended claims.

Claims

1. An anomaly detection method applied to an engine system, characterized in that, include: Obtain the target boost pressure and the actual boost pressure, and calculate the boost pressure difference between the two based on the target boost pressure and the actual boost pressure; Real-time monitoring of whether the engine system simultaneously meets all preset conditions, and when the time for the engine system to simultaneously meet all preset conditions exceeds a preset time threshold, reading the boost pressure difference of the most recent consecutive sampling cycles to form an array; Calculate the estimated boost pressure difference corresponding to the boost pressure difference of the first V1 sampling periods in the array; Based on the boost pressure difference of the first V1 sampling cycles in the array, the estimated boost pressure difference corresponding to the boost pressure difference of the first V1 sampling cycles, and the target boost pressure, and when it is determined that the engine system has a boost pressure too high fault in a driving cycle, the degree of the boost pressure too high fault is determined. Based on the severity of the overpressure fault determined in the driving cycle, the corresponding handling strategy is executed, and the sampling period V1 is updated in the driving cycle.

2. The method according to claim 1, characterized in that, All the preset conditions include: Condition 1: The fluctuation of the target intake pressure does not exceed the first preset fluctuation threshold. Condition 2: The engine intake air volume has not reached the engine's maximum air volume; Condition 3: The fluctuation of the target boost pressure does not exceed the second preset fluctuation threshold. Condition 4: The rate of change of engine speed is not lower than the first preset rate of change value; Condition 5: The rate of change of cylinder intake air density is not lower than the second preset rate of change value; Condition 6: The rate of change of the opening of the booster actuator shall not be lower than the third preset rate of change value; Condition 7: The engine is not shut off from fuel; Condition 8: The engine did not experience knocking or pre-ignition; Condition 9: No component failures have occurred in the intake system.

3. The method according to claim 1, characterized in that, The estimated boost pressure difference corresponding to the boost pressure difference in any of the first V1 sampling periods in the array is expressed as: in, (i=0,1,2,……,V1-1) represents the pressure difference of any sampling period in the first V1 sampling periods of the array. For trend filtering time, The time interval between adjacent sampling periods. This is the estimated boost pressure difference corresponding to the boost pressure difference.

4. The method according to claim 1, characterized in that, When determining the degree of excessive boost pressure in the engine system during a driving cycle, the determination of the severity of the excessive boost pressure fault includes: If, in the first V1 sampling periods, the difference between the boost pressure difference and the corresponding estimated boost pressure difference in each sampling period is not less than 0, and the proportion of the sampling period corresponding to the target boost pressure under the preset threshold in the first V1 sampling periods exceeds the first preset proportion threshold, then a minor fault of excessive boost pressure is considered to have occurred. If, in the first V1 sampling periods, the difference between the boost pressure difference and the corresponding estimated boost pressure difference in each sampling period is not less than 0, and the proportion of the sampling period corresponding to the target boost pressure under the preset threshold in the first V1 sampling periods exceeds the second preset proportion threshold, then a moderate fault of excessive boost pressure is considered to have occurred. If, in the first V1 sampling periods, the difference between the boost pressure difference and the corresponding estimated boost pressure difference in each sampling period is not less than 0, and each difference is greater than or equal to the target boost pressure under the preset threshold, then a severe fault of excessive boost pressure is considered to have occurred.

5. The method according to claim 1, characterized in that, The step of executing a corresponding processing strategy based on the degree of overpressure fault determined in the driving cycle, and updating the sampling period V1 in the driving cycle, includes: If a minor fault of excessive boost pressure is determined to have occurred in the driving cycle, the target opening of the P-term turbine actuator is updated, and the sampling period V1 is subtracted from the first preset period threshold as the updated sampling period V1. If a moderate fault of excessive boost pressure is determined to have occurred in the driving cycle, the target boost pressure is reduced and the increment of the target opening of the turbine actuator in item I is updated. The sampling period V1 is then subtracted from the second preset period threshold to obtain the updated sampling period V1. If a severe fault of excessive boost pressure is determined to have occurred in the driving cycle, the target intake pressure and target boost pressure are reduced, the increment of the target opening of the turbine actuator in item I is updated, and the sampling period V1 is subtracted from the third preset period threshold to obtain the updated sampling period V1.

6. The method according to claim 1, characterized in that, Also includes: If, in the first V1 sampling periods, the difference between the boost pressure difference in at least one sampling period and the corresponding estimated boost pressure difference is less than 0, then no fault is considered to have occurred. Alternatively, if in the first V1 sampling periods, the difference between the boost pressure difference and the corresponding estimated boost pressure difference in each sampling period is not less than 0, but does not fall under any of the following categories: mild failure due to excessive boost pressure, moderate failure due to excessive boost pressure, and severe failure due to excessive boost pressure, then no failure is considered to have occurred. If no faults are detected in this driving cycle, the number of fault-free occurrences across multiple driving cycles is accumulated. Furthermore, when the cumulative number of fault-free occurrences exceeds the first preset threshold, the sampling period V1 is increased by the fourth preset threshold to become the updated sampling period V1. Furthermore, in a single driving cycle, only the highest priority boost pressure situation is determined, with the priorities from highest to lowest as follows: severe failure due to excessive boost pressure, moderate failure due to excessive boost pressure, mild failure due to excessive boost pressure, and no failure.

7. The method according to claim 1, characterized in that, Also includes: If the number of driving cycles in which a severe fault of excessive boost pressure occurs exceeds the second preset threshold, it is considered that an excessive pressure fault has occurred in the engine system. If the number of driving cycles in which a severe fault of excessive boost pressure occurs does not exceed the second preset threshold, then the engine system is considered to be without fault.

8. An anomaly detection system applied to an engine system, characterized in that, The system is configured to implement the method according to any one of claims 1-7, the system comprising: The acquisition module is used to acquire the target boost pressure and the actual boost pressure, and to obtain the boost pressure difference between the two based on the target boost pressure and the actual boost pressure; The monitoring module is used to monitor in real time whether the engine system meets all preset conditions at the same time, and when the time for the engine system to meet all preset conditions at the same time exceeds a preset time threshold, it reads the boost pressure difference of the most recent consecutive sampling cycles to form an array. The calculation module is used to calculate the estimated boost pressure difference corresponding to the boost pressure difference of the first V1 sampling periods in the array; The determination module is used to determine the degree of excessive boost pressure based on the boost pressure difference of the first V1 sampling cycles in the array, the estimated boost pressure difference corresponding to the boost pressure difference of the first V1 sampling cycles, and the target boost pressure. When determining that the engine system has a fault of excessive boost pressure in a driving cycle, the module determines the degree of the fault of excessive boost pressure. The execution module is used to execute the corresponding processing strategy based on the degree of fault of excessive boost pressure determined in the driving cycle, and update the sampling period V1 in the driving cycle.

9. An electronic device, characterized in that, The electronic device includes: At least one processor, and a memory communicatively connected to said at least one processor; The memory stores a computer program that can be executed by the at least one processor to enable the at least one processor to perform the steps of the method according to any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that cause a processor to perform the steps of the method according to any one of claims 1-7.

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