Method and device for preventing clamping stagnation of exhaust gas recirculation valve of hybrid engine

Abstract

The invention relates to the technical field of EGR valve clamping stagnation prevention, in particular to an exhaust gas recirculation valve clamping stagnation prevention method and device.The method comprises the steps that operation data of an exhaust gas recirculation valve and an engine of a vehicle are collected and input into a maintenance model, so that a carbon deposition risk value and a clamping stagnation probability corresponding to the exhaust gas recirculation valve are generated; the method comprises the following steps: firstly, determining the clamping stagnation fault types of different clamping stagnation conditions so as to start an active self-cleaning mode, when soft carbon deposition clamping stagnation occurs, increasing a driving current, counting the number of times of entering the active self-cleaning mode, and performing corresponding cleaning and maintenance operation after the number of times exceeds a threshold value; and when the mechanical clamping stagnation fault type occurs, generating corresponding clamping stagnation warning information so as to perform physical maintenance on the exhaust gas recirculation valve. Therefore, the problems that in the prior art, clamping stagnation cannot be effectively prevented, only the engine function can be limited after clamping stagnation occurs, and the driving experience is greatly affected are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of EGR valve anti-sticking, and particularly relates to an exhaust gas recirculation valve anti-sticking method and device for a hybrid engine. BACKGROUND

[0002] An EGR (Exhaust Gas Recirculation) valve is one of important components of an exhaust gas recirculation system. The system can send part of exhaust gas emitted by an engine back to an intake manifold, and the exhaust gas and fresh air enter a cylinder again to participate in combustion. Since the exhaust gas contains a large amount of multi-atomic gas such as carbon dioxide, although the carbon dioxide cannot burn, it can absorb a large amount of heat in the combustion chamber because of its high specific heat capacity, so that the maximum combustion temperature of the mixture in the cylinder is reduced, thereby achieving the purpose of reducing the generation amount of nitrogen oxides and energy saving and emission reduction.

[0003] The EGR valve is a key component for reducing nitrogen oxides (NOx) emission of an engine. However, because of long-term exposure to a high-temperature and high-carbon smoke exhaust gas environment, carbon is easily accumulated on the valve rod and valve seat of the EGR valve, causing movement sticking.

[0004] At present, the existing technology mainly relies on diagnosis (such as pressure difference sensor monitoring and flow model comparison) and replacement after a fault occurs, and cannot prevent the occurrence of sticking. After the sticking occurs, the engine function can only be limited (limp mode), which greatly affects the driving experience and increases the maintenance cost of the vehicle owner, and needs to be solved urgently. SUMMARY

[0005] The present application provides an exhaust gas recirculation valve anti-sticking method and device for a hybrid engine, to solve the problems that the existing technology cannot effectively prevent the occurrence of sticking, and can only limit the engine function after the sticking occurs, which greatly affects the driving experience.

[0006] The first aspect embodiment of the application provides a device for preventing the sticking of an exhaust gas recirculation valve of a hybrid engine, comprising the following steps: collecting operation data of an exhaust gas recirculation valve and an engine of a target vehicle, and inputting the operation data into a pre-trained maintenance model to generate a carbon deposition risk value and a sticking probability corresponding to the exhaust gas recirculation valve; judging whether the exhaust gas recirculation valve meets a preset sticking occurrence condition based on the carbon deposition risk value and the sticking probability, wherein, in the case that the exhaust gas recirculation valve meets the preset sticking occurrence condition, a sticking fault type corresponding to the exhaust gas recirculation valve is judged; when the sticking fault type is a soft sticking fault type, a carbon deposition amount corresponding to the exhaust gas recirculation valve is obtained, and it is judged whether the carbon deposition amount is greater than a preset carbon deposition amount threshold to obtain a corresponding judgment result, and a corresponding exhaust gas recirculation valve control strategy is determined based on the judgment result, so that a preset self-cleaning operation is performed on the exhaust gas recirculation valve through the exhaust gas recirculation valve control strategy to remove the carbon deposition of the exhaust gas recirculation valve; when the sticking fault type is a mechanical sticking fault type, a corresponding sticking warning information is generated, and the sticking warning information is sent to a target user terminal, so that the target user performs a corresponding physical maintenance operation on the exhaust gas recirculation valve according to the sticking warning information.

[0007] According to the above technical means, the embodiments of the application can predict the sticking risk and actively attempt to restore the valve function when the sticking occurs, thereby effectively improving the reliability of the EGR system, prolonging the service life of the valve, and effectively ensuring the continuous, healthy and stable operation of the engine.

[0008] Optionally, in an embodiment of the application, before collecting the operation data of the exhaust gas recirculation valve and the engine of the target vehicle and inputting the operation data into the pre-trained maintenance model, the method further comprises: obtaining engine exhaust temperature data and driving data of the target vehicle, and collecting historical working cycle times, cumulative working time and action times of the exhaust gas recirculation valve; based on the engine exhaust temperature data, the driving data, the historical working cycle times, the cumulative working time and the action times, a training data set is constructed, and the pre-constructed maintenance model is trained using the training data set.

[0009] According to the above technical means, the embodiments of the application can construct a training data set by collecting multiple working parameters of the EGR valve to train a maintenance model to predict the carbon deposition risk and the sticking probability, so that potential faults can be found in advance, maintenance costs can be reduced, and the engine can be ensured to operate stably under complex working conditions.

[0010] Optionally, in an embodiment of the present application, the judging whether the exhaust gas recirculation valve meets a preset sticking occurrence condition based on the carbon deposition risk value and the sticking probability comprises: calculating a health coefficient corresponding to the exhaust gas recirculation valve based on the carbon deposition risk value and the sticking probability, and comparing the health coefficient with a preset first coefficient threshold, a second coefficient threshold and a third coefficient threshold, wherein the second coefficient threshold is greater than the first coefficient threshold, and the second coefficient threshold is less than the third coefficient threshold; when the health coefficient is greater than the third coefficient threshold, it is determined that the exhaust gas recirculation valve is in a healthy normal state, and a preset anti-sticking operation is not required; when the health coefficient is greater than or equal to the second coefficient threshold and less than or equal to the third coefficient threshold, it is determined that the exhaust gas recirculation valve is in a healthy alert state, and a maintenance suggestion is generated; when the health coefficient is greater than or equal to the first coefficient threshold and less than or equal to the second coefficient threshold, it is determined that the exhaust gas recirculation valve is in a healthy warning state, and a corresponding maintenance reminder lamp is lit; when the health coefficient is less than the first coefficient threshold, it is determined that the exhaust gas recirculation valve is in an unhealthy state, and valve position and driving current change information of the exhaust gas recirculation valve are obtained, and a sticking fault type corresponding to the exhaust gas recirculation valve is determined based on the valve position and the driving current change information; if the driving current increases and the valve of the exhaust gas recirculation valve operates at a movement speed less than a preset valve movement speed threshold to reach a target position, it is determined that the sticking fault type of the exhaust gas recirculation valve is the soft sticking fault type; if a driving current change rate is greater than a preset change rate threshold and the valve position does not change, it is determined that the sticking fault type of the exhaust gas recirculation valve is the mechanical sticking fault type.

[0011] According to the above technical means, the embodiments of the present application can refine the health state by four thresholds, and cannot accurately distinguish the sticking type by combining parameters, so as to realize the EGR valve life cycle grading control, to perform early warning and targeted processing, effectively reduce the fault influence, and save the maintenance cost.

[0012] Optionally, in one embodiment of this application, the step of determining whether the amount of carbon deposit is greater than a preset carbon deposit threshold to obtain a corresponding determination result, and determining a corresponding exhaust gas recirculation valve control strategy based on the determination result, so as to perform a preset self-cleaning operation on the exhaust gas recirculation valve through the exhaust gas recirculation valve control strategy to remove the carbon deposit on the exhaust gas recirculation valve, includes: determining whether the amount of carbon deposit is greater than the preset carbon deposit threshold; if the amount of carbon deposit is greater than the preset carbon deposit threshold, adjusting the ignition advance angle through the engine controller, starting the automatic cleaning mode, increasing the drive current of the exhaust gas recirculation valve, and performing a preset flow test verification on the exhaust gas recirculation valve, and determining whether the exhaust gas recirculation valve passes the preset flow test verification, wherein, in the exhaust gas recirculation... If the recirculation valve fails the preset flow test, the self-cleaning mode is deemed to have failed, and the exhaust gas recirculation valve is disabled during the current maintenance process, with the corresponding fault light illuminated. If the carbon buildup is less than or equal to the preset carbon buildup threshold, the automatic cleaning mode is activated, the drive current of the exhaust gas recirculation valve is increased, and it is determined whether the exhaust gas recirculation valve has passed the preset flow test. If the exhaust gas recirculation valve fails the preset flow test, an automatic cleaning failure warning is generated and sent to the target user, allowing the target user to perform corresponding physical maintenance operations on the exhaust gas recirculation valve based on the automatic cleaning failure warning.

[0013] Based on the above technical means, the embodiments of this application can accurately predict the risk of jamming and actively attempt to restore valve function when jamming occurs, thereby improving the reliability of the system, extending the life of the valve, and effectively ensuring the continuous healthy operation of the engine.

[0014] A second aspect of this application provides an anti-sticking device for the exhaust gas recirculation valve of a hybrid engine, comprising: a generation module, used to collect operating data of the exhaust gas recirculation valve and engine of a target vehicle, and input the operating data into a pre-trained maintenance model to generate a carbon deposit risk value and a sticking probability corresponding to the exhaust gas recirculation valve; a judgment module, used to determine whether the exhaust gas recirculation valve meets a preset sticking occurrence condition based on the carbon deposit risk value and the sticking probability, wherein, if the exhaust gas recirculation valve meets the preset sticking occurrence condition, the module determines the sticking fault type corresponding to the exhaust gas recirculation valve; and a first fault handling module, used when the sticking fault type is a soft... When the jamming fault type is mechanical jamming, the amount of carbon deposits corresponding to the exhaust gas recirculation valve is obtained, and it is determined whether the amount of carbon deposits is greater than a preset carbon deposit threshold to obtain a corresponding judgment result. Based on the judgment result, a corresponding exhaust gas recirculation valve control strategy is determined to perform a preset self-cleaning operation on the exhaust gas recirculation valve through the exhaust gas recirculation valve control strategy to remove the carbon deposits on the exhaust gas recirculation valve. The second fault handling module is used to generate corresponding jamming warning information when the jamming fault type is mechanical jamming fault type, and send the jamming warning information to the target user terminal, so that the target user can perform corresponding physical maintenance operations on the exhaust gas recirculation valve according to the jamming warning information.

[0015] Optionally, in one embodiment of this application, it further includes: a data acquisition module, used to acquire engine exhaust temperature data and driving data of the target vehicle before acquiring the operating data of the exhaust gas recirculation valve and engine of the target vehicle and inputting the operating data into the pre-trained maintenance model, and to acquire the historical number of working cycles, cumulative working time and number of actions of the exhaust gas recirculation valve; and a training module, used to construct a training dataset based on the engine exhaust temperature data, the driving data, the historical number of working cycles, the cumulative working time and the number of actions, and to train the pre-built maintenance model using the training dataset.

[0016] Optionally, in one embodiment of this application, the judgment module includes: a calculation unit, configured to calculate a health coefficient corresponding to the exhaust gas recirculation valve based on the carbon deposit risk value and the jamming probability, and compare the health coefficient with a preset first coefficient threshold, a second coefficient threshold, and a third coefficient threshold, wherein the second coefficient threshold is greater than the first coefficient threshold and the second coefficient threshold is less than the third coefficient threshold; a first judgment unit, configured to determine that the exhaust gas recirculation valve is in a healthy and normal state when the health coefficient is greater than the third coefficient threshold, and no preset anti-jamming operation is required; a second judgment unit, configured to determine that the exhaust gas recirculation valve is in a health alert state when the health coefficient is greater than or equal to the second coefficient threshold and the health coefficient is less than or equal to the third coefficient threshold, and generate maintenance suggestions; and a third judgment unit, configured to determine that the exhaust gas recirculation valve is in a health alert state when the health coefficient is greater than or equal to the first coefficient threshold and the health coefficient is less than or equal to the third coefficient threshold, and generate maintenance suggestions; and a third judgment unit, configured to determine that the exhaust gas recirculation valve is in a health alert state when the health coefficient is greater than or equal to the first coefficient threshold and the health coefficient is less than or equal to the third coefficient threshold. When the coefficient is less than or equal to the second coefficient threshold, the exhaust gas recirculation valve is determined to be in a health warning state, and the corresponding maintenance reminder light is illuminated; the fourth determination unit is used to determine that the exhaust gas recirculation valve is in an unhealthy state when the health coefficient is less than the first coefficient threshold, and to obtain the valve position and drive current change information of the exhaust gas recirculation valve, and to determine the corresponding jamming fault type of the exhaust gas recirculation valve based on the valve position and drive current change information; the determination unit is used to determine that the jamming fault type of the exhaust gas recirculation valve is the soft jamming fault type if the drive current increases and the valve of the exhaust gas recirculation valve moves at a speed less than a preset valve movement speed threshold to reach the target position; the sixth determination unit is used to determine that the jamming fault type of the exhaust gas recirculation valve is the mechanical jamming fault type if the rate of change of the drive current is greater than a preset rate of change threshold and the valve position has not changed.

[0017] Optionally, in one embodiment of this application, the first fault handling module includes: an analysis unit, configured to determine whether the amount of carbon deposit is greater than the preset carbon deposit threshold; and an automatic cleaning unit, configured to, if the amount of carbon deposit is greater than the preset carbon deposit threshold, adjust the ignition advance angle through the engine controller, activate the automatic cleaning mode, increase the drive current of the exhaust gas recirculation valve, perform a preset flow test verification on the exhaust gas recirculation valve, and determine whether the exhaust gas recirculation valve passes the preset flow test verification, wherein, if the exhaust gas recirculation valve fails the preset flow test verification, the self-cleaning mode is determined to have failed, and the current state of the exhaust gas recirculation valve is adjusted accordingly. During the repair process, the exhaust gas recirculation valve is disabled, and the corresponding fault light for the exhaust gas recirculation valve is illuminated. A flow test verification unit is used to activate the automatic cleaning mode and increase the drive current of the exhaust gas recirculation valve if the amount of carbon deposit is less than or equal to the preset carbon deposit threshold. It also determines whether the exhaust gas recirculation valve passes the preset flow test verification. If the exhaust gas recirculation valve fails the preset flow test verification, an automatic cleaning failure warning message is generated and sent to the target user terminal, enabling the target user to perform corresponding physical repair operations on the exhaust gas recirculation valve based on the automatic cleaning failure warning message.

[0018] A third aspect of this application provides an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the method for preventing the exhaust gas recirculation valve of a hybrid engine from jamming as described in the above embodiments.

[0019] A fourth aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described method for preventing the exhaust gas recirculation valve from jamming in a hybrid engine.

[0020] A fifth aspect of this application provides a computer program product, including a computer program that is executed to implement the above-described method for preventing the exhaust gas recirculation valve from jamming in a hybrid engine.

[0021] Therefore, the embodiments of this application have the following beneficial effects: The embodiments of this application can collect operating data of the exhaust gas recirculation valve and engine of the target vehicle and input the operating data into a pre-trained maintenance model to generate a carbon deposit risk value and a jamming probability corresponding to the exhaust gas recirculation valve. Based on the carbon deposit risk value and jamming probability, it is determined whether the exhaust gas recirculation valve meets the preset jamming occurrence conditions. If the exhaust gas recirculation valve meets the preset jamming occurrence conditions, the jamming fault type corresponding to the exhaust gas recirculation valve is determined. When the jamming fault type is a soft jamming fault type, the carbon deposit amount corresponding to the exhaust gas recirculation valve is obtained, and it is determined whether the carbon deposit amount is greater than a preset carbon deposit amount threshold to obtain the corresponding judgment result. Based on the judgment result, the corresponding exhaust gas recirculation valve control strategy is determined to perform a preset self-cleaning operation on the exhaust gas recirculation valve to remove the carbon deposits in the exhaust gas recirculation valve. When the jamming fault type is a mechanical jamming fault type, a corresponding jamming warning message is generated and sent to the target user terminal, so that the target user can perform corresponding physical maintenance operations on the exhaust gas recirculation valve according to the jamming warning message. This application improves the reliability of the EGR system and extends valve life by predicting the risk of jamming and actively attempting to restore valve function when jamming occurs, thus ensuring the continuous, healthy, and stable operation of the engine. This solves the problems of existing technologies, which cannot effectively prevent jamming and can only limit engine function after jamming occurs, significantly impacting the driving experience.

[0022] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a flowchart of a method for preventing the exhaust gas recirculation valve of a hybrid engine from sticking, according to an embodiment of this application. Figure 2 This is a schematic diagram of the assembly relationship between components provided in an embodiment of this application; Figure 3 This application provides a schematic diagram illustrating the specific application location of a load when the load direction is different. Figure 4 This is an example diagram of an anti-sticking device for the exhaust gas recirculation valve of a hybrid engine according to an embodiment of this application; Figure 5 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application.

[0024] Among them, 10-exhaust gas recirculation valve anti-jamming device for hybrid engine; 100-generation module, 200-judgment module, 300-first fault handling module, 400-second fault handling module; 501-memory, 502-processor, 503-communication interface. Detailed Implementation

[0025] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0026] The following describes a method and apparatus for preventing the exhaust gas recirculation valve of a hybrid engine from jamming, based on embodiments of the present application, with reference to the accompanying drawings. Addressing the problems mentioned in the background art, this application provides a method for preventing the exhaust gas recirculation valve of a hybrid engine from jamming. In this method, operating data of the exhaust gas recirculation valve and engine of a target vehicle are collected and input into a pre-trained maintenance model to generate a carbon buildup risk value and jamming probability corresponding to the exhaust gas recirculation valve. Based on the carbon buildup risk value and jamming probability, it is determined whether the exhaust gas recirculation valve meets preset jamming occurrence conditions. If the exhaust gas recirculation valve meets the preset jamming occurrence conditions, the jamming fault type corresponding to the exhaust gas recirculation valve is determined. When the jamming fault type is... In the case of a soft sticking fault, the amount of carbon deposits on the exhaust gas recirculation (EGR) valve is obtained, and it is determined whether the amount of carbon deposits exceeds a preset carbon deposit threshold to obtain a corresponding judgment result. Based on the judgment result, a corresponding EGR valve control strategy is determined to perform a preset self-cleaning operation on the EGR valve to remove carbon deposits. When the sticking fault is a mechanical sticking fault, a corresponding sticking warning message is generated and sent to the target user, allowing the target user to perform corresponding physical repair operations on the EGR valve based on the sticking warning message. This application effectively improves the reliability of the EGR system and extends valve life by predicting sticking risk and actively attempting to restore valve function when sticking occurs, thus effectively ensuring the continuous healthy and stable operation of the engine. Therefore, it solves the problems of existing technologies being unable to effectively prevent sticking and only being able to restrict engine function after sticking occurs, which greatly affects the driving experience.

[0027] Specifically, Figure 1 This is a flowchart illustrating a method for preventing the exhaust gas recirculation valve of a hybrid engine from jamming, as provided in an embodiment of this application.

[0028] like Figure 1 As shown, the method for preventing the exhaust gas recirculation valve of this hybrid engine from sticking includes the following steps: In step S101, the operating data of the exhaust gas recirculation valve and engine of the target vehicle are collected, and the operating data is input into the pre-trained maintenance model to generate the carbon deposit risk value and jamming probability corresponding to the exhaust gas recirculation valve.

[0029] The embodiments of this application first collect the operating data of the vehicle's EGR valve and engine, and input them into a pre-trained maintenance model to generate the carbon deposit risk value and jamming probability of the exhaust gas recirculation valve in real time, thereby providing reliable data support for the jamming determination of the exhaust gas recirculation valve.

[0030] Optionally, in one embodiment of this application, before collecting the operating data of the exhaust gas recirculation valve and engine of the target vehicle and inputting the operating data into the pre-trained maintenance model, the method further includes: acquiring the engine exhaust temperature data and driving data of the target vehicle, and collecting the historical number of working cycles, cumulative working time and number of actions of the exhaust gas recirculation valve; constructing a training dataset based on the engine exhaust temperature data, driving data, historical number of working cycles, cumulative working time and number of actions, and using the training dataset to train the pre-built maintenance model.

[0031] As one possible approach, embodiments of this application can collect historical working cycles of the EGR valve, cumulative working time (the longer the time, the longer the exposure to exhaust gas, and the higher the risk of carbon buildup), EGR valve actuation count (the cumulative number of EGR valve actuation cycles, which is related to mechanical wear and fatigue), engine exhaust temperature, and driving statistics signals (such as short-distance driving counters (frequent short-distance low-temperature driving, where the engine is not fully preheated, making it easier for moisture to condense inside the EGR valve and combine with soot to form stubborn carbon deposits) and average exhaust temperature (long-term low-temperature operation means more unburned hydrocarbons, making it easier to produce gel-like carbon deposits)) to construct a training dataset.

[0032] Secondly, embodiments of this application can train a pre-built maintenance model using a training dataset to predict the risk of carbon buildup and the probability of jamming in valves.

[0033] Therefore, the embodiments of this application construct a training dataset by collecting multiple operating parameters of the EGR valve to train a maintenance model to predict the risk of carbon buildup and the probability of jamming, thereby enabling early detection of potential faults, reducing maintenance costs, and ensuring stable engine operation under complex conditions.

[0034] In step S102, based on the carbon deposit risk value and the jamming probability, it is determined whether the exhaust gas recirculation valve meets the preset jamming occurrence conditions. If the exhaust gas recirculation valve meets the preset jamming occurrence conditions, the jamming fault type corresponding to the exhaust gas recirculation valve is determined.

[0035] Furthermore, embodiments of this application can determine whether the exhaust gas recirculation valve meets the preset jamming conditions based on the carbon deposit risk value and the jamming probability; if it does, the specific type of jamming fault corresponding to the valve can be further determined.

[0036] Therefore, the embodiments of this application can provide early warning and targeted handling by accurately determining whether jamming occurs and the type of fault, thereby avoiding the escalation of the fault and reducing engine performance loss.

[0037] Optionally, in one embodiment of this application, based on the carbon buildup risk value and the jamming probability, it is determined whether the exhaust gas recirculation valve meets the preset jamming occurrence conditions. If the exhaust gas recirculation valve meets the preset jamming occurrence conditions, the jamming fault type corresponding to the exhaust gas recirculation valve is determined, including: calculating the health coefficient corresponding to the exhaust gas recirculation valve based on the carbon buildup risk value and the jamming probability, and comparing the health coefficient with preset first, second, and third coefficient thresholds, wherein the second coefficient threshold is greater than the first coefficient threshold and less than the third coefficient threshold; when the health coefficient is greater than the third threshold, the exhaust gas recirculation valve is determined to be in a healthy and normal state, and no preset anti-jamming operation is required; when the health coefficient is greater than or equal to the second coefficient threshold and less than or equal to the third threshold, the exhaust gas recirculation valve is determined to be in a health alert state, and an anti-jamming operation is performed. Maintenance recommendations are provided as follows: When the health coefficient is greater than or equal to the first coefficient threshold and less than or equal to the second coefficient threshold, the exhaust gas recirculation valve is determined to be in a health warning state, and the corresponding maintenance reminder light is illuminated; when the health coefficient is less than the first coefficient threshold, the exhaust gas recirculation valve is determined to be in an unhealthy state, and the valve position and drive current change information of the exhaust gas recirculation valve are obtained, and the corresponding jamming fault type of the exhaust gas recirculation valve is determined based on the valve position and drive current change information; if the drive current increases, and the exhaust gas recirculation valve moves at a speed less than the preset valve movement speed threshold to reach the target position, then the jamming fault type of the exhaust gas recirculation valve is determined to be a soft jamming fault type; if the rate of change of the drive current is greater than the preset rate of change threshold, and the valve position does not change, then the jamming fault type of the exhaust gas recirculation valve is determined to be a mechanical jamming fault type.

[0038] As one possible approach, such as Figure 2 As shown, in this embodiment of the application, a first coefficient threshold of 0.3 and a second coefficient threshold of 0.7 can be set to calculate the health coefficient of the exhaust gas recirculation valve (i.e., based on the carbon deposit risk value and the probability of jamming) Figure 2The system uses a health index to determine the health status of the exhaust gas recirculation valve. If the health index is greater than 0.7 (i.e., exceeding the third threshold), the valve is considered healthy and normal, requiring no further action. If the health index is between 0.5 and 0.7 (i.e., between the second and third thresholds), the valve is considered to be in a health alert state, and maintenance recommendations are generated (i.e., it is recommended to perform corresponding checks during maintenance). If the health index is between 0.3 and 0.5 (i.e., between the first and second thresholds), the valve is considered to be in a health warning state, and the maintenance reminder light is illuminated. If the health index is less than 0.3 (i.e., below the first threshold), the valve is considered to be in an unhealthy state. The system then uses the valve position and drive current to determine the fault type. If the current increases and the valve movement speed is insufficient, the fault type is soft jamming. If the current changes suddenly and the valve does not move, the fault type is mechanical jamming, and the fault light is illuminated and processing is triggered. Therefore, the embodiments of this application refine the health status through four-level thresholds, which cannot accurately distinguish the type of jamming by combining parameters, thereby realizing the hierarchical control of the EGR valve throughout its entire life cycle, so as to carry out early warning and targeted treatment, effectively reducing the impact of failure and saving maintenance costs.

[0039] In step S103, when the jamming fault type is a soft jamming fault type, the amount of carbon deposits corresponding to the exhaust gas recirculation valve is obtained, and it is determined whether the amount of carbon deposits is greater than the preset carbon deposit threshold to obtain the corresponding judgment result. Based on the judgment result, the corresponding exhaust gas recirculation valve control strategy is determined so as to perform a preset self-cleaning operation on the exhaust gas recirculation valve through the exhaust gas recirculation valve control strategy to remove the carbon deposits on the exhaust gas recirculation valve.

[0040] In step S104, when the jamming fault type is a mechanical jamming fault type, a corresponding jamming warning message is generated and sent to the target user terminal, so that the target user can perform corresponding physical maintenance operations on the exhaust gas recirculation valve according to the jamming warning message.

[0041] Subsequently, embodiments of this application can comprehensively determine the type of jamming by integrating multiple signals such as feedback from the differential pressure sensor (ΔP), the valve position sensor, and changes in the drive current. If the drive current increases, but the valve eventually reaches the commanded position slowly, the jamming fault type is a soft jamming fault type, suitable for the active self-cleaning mode. If the drive current changes drastically (overload or jamming) and there is no feedback on the valve position, the jamming fault type is determined to be a mechanical jamming fault type. In this case, the limp mode can be directly activated and an alarm can be triggered to prompt the user to perform physical maintenance on the vehicle.

[0042] Therefore, the embodiments of this application adopt differentiated treatment for different types of jamming. Soft jamming is treated by self-cleaning to remove carbon deposits, while mechanical jamming is promptly reminded for maintenance, thereby improving fault handling efficiency, reducing downtime, lowering maintenance costs, and ensuring the continuous and stable operation of the system.

[0043] Optionally, in one embodiment of this application, determining whether the amount of carbon deposit is greater than a preset carbon deposit threshold to obtain a corresponding determination result, and determining a corresponding exhaust gas recirculation valve control strategy based on the determination result, so as to perform a preset self-cleaning operation on the exhaust gas recirculation valve through the exhaust gas recirculation valve control strategy to remove the carbon deposit on the exhaust gas recirculation valve, including: determining whether the amount of carbon deposit is greater than a preset carbon deposit threshold; if the amount of carbon deposit is greater than the preset carbon deposit threshold, adjusting the ignition advance angle through the engine controller, starting the automatic cleaning mode, increasing the drive current of the exhaust gas recirculation valve, and performing a preset flow test verification on the exhaust gas recirculation valve, and determining whether the exhaust gas recirculation valve passes the preset flow test verification, wherein, in the exhaust gas If the recirculation valve fails the preset flow test, the self-cleaning mode is deemed to have failed, and the exhaust gas recirculation valve is disabled during the current maintenance process, with the corresponding fault light illuminated. If the carbon buildup is less than or equal to the preset carbon buildup threshold, the automatic cleaning mode is activated, the drive current of the exhaust gas recirculation valve is increased, and it is determined whether the exhaust gas recirculation valve has passed the preset flow test. If the exhaust gas recirculation valve fails the preset flow test, an automatic cleaning failure warning message is generated and sent to the target user, allowing the target user to perform corresponding physical maintenance operations on the exhaust gas recirculation valve based on the automatic cleaning failure warning message.

[0044] Specifically, such as Figure 3 As shown in the embodiment of this application, when the engine controller ECU determines through diagnostic or predictive models that the valve is about to or has just begun to stick, it first activates the active self-cleaning mode. When the amount of carbon deposit is small (i.e., the amount of carbon deposit is less than or equal to the preset carbon deposit threshold), the ECU controls the EGR valve to increase the drive current and execute a series of high-frequency, large-amplitude opening and closing cycles. Through this fast mode, carbon deposits are quickly removed.

[0045] When there is a large amount of carbon buildup (i.e., the amount of carbon buildup is greater than the preset carbon buildup threshold), the ECU temporarily and appropriately delays the ignition timing to increase the exhaust temperature. The higher temperature exhaust gas impacts the valve, which helps to soften and burn off some of the carbon buildup. By using the dual effects of mechanical impact and high temperature thermal shock, it attempts to "shatter" or "burn off" the slight carbon buildup, so that the valve can return to normal function.

[0046] It is important to note that after executing the active self-cleaning mode, this embodiment requires an immediate EGR flow test verification. If the verification passes, the fault code is cleared and the system returns to normal operation. If the verification fails, "self-cleaning mode failed" is recorded, and the EGR system is permanently disabled until the next maintenance. The fault light is also illuminated. Since repeatedly attempting to push the ignition bead carries a certain risk, it is recommended not to exceed three attempts, otherwise there is a risk of engine damage.

[0047] Therefore, the embodiments of this application can predict the risk of jamming and actively attempt to restore valve function when jamming occurs, thereby improving the reliability of the system, extending the life of the valve, and effectively ensuring the continuous healthy operation of the engine.

[0048] According to the embodiment of this application, the method for preventing the exhaust gas recirculation valve (EGR) of a hybrid engine from jamming involves collecting operating data of the EGR valve and engine of the target vehicle and inputting this data into a pre-trained maintenance model to generate a carbon buildup risk value and jamming probability for the EGR valve. Based on the carbon buildup risk value and jamming probability, it is determined whether the EGR valve meets the preset jamming occurrence conditions. If the EGR valve meets the preset jamming occurrence conditions, the jamming fault type of the EGR valve is determined. When the jamming fault type is a soft jamming fault type... This application acquires the amount of carbon deposits on the exhaust gas recirculation (EGR) valve and determines whether the amount exceeds a preset carbon deposit threshold. Based on this threshold, a corresponding EGR valve control strategy is determined to perform a preset self-cleaning operation on the EGR valve to remove carbon deposits. When the jamming fault type is mechanical, a corresponding jamming warning message is generated and sent to the target user, allowing the user to perform appropriate physical repairs on the EGR valve. By predicting jamming risks and proactively attempting to restore valve function when jamming occurs, this application effectively improves the reliability of the EGR system, extends valve life, and ensures the continuous, healthy, and stable operation of the engine.

[0049] Secondly, the anti-sticking device for the exhaust gas recirculation valve of the hybrid engine according to the embodiments of this application is described with reference to the accompanying drawings.

[0050] Figure 4 This is a block diagram of the anti-jamming device for the exhaust gas recirculation valve of a hybrid engine according to an embodiment of this application.

[0051] like Figure 4 As shown, the exhaust gas recirculation valve anti-jamming device 10 of the hybrid engine includes: a generation module 100, a judgment module 200, a first fault handling module 300, and a second fault handling module 400.

[0052] The generation module 100 is used to collect the operating data of the exhaust gas recirculation valve and engine of the target vehicle, and input the operating data into the pre-trained maintenance model to generate the carbon deposit risk value and jamming probability of the exhaust gas recirculation valve.

[0053] The judgment module 200 is used to determine whether the exhaust gas recirculation valve meets the preset jamming occurrence conditions based on the carbon deposit risk value and the jamming probability. If the exhaust gas recirculation valve meets the preset jamming occurrence conditions, the corresponding jamming fault type of the exhaust gas recirculation valve is determined.

[0054] The first fault handling module 300 is used to obtain the amount of carbon deposits corresponding to the exhaust gas recirculation valve when the jamming fault type is a soft jamming fault type, and to determine whether the amount of carbon deposits is greater than a preset carbon deposit threshold to obtain the corresponding judgment result. Based on the judgment result, the corresponding exhaust gas recirculation valve control strategy is determined so as to perform a preset self-cleaning operation on the exhaust gas recirculation valve through the exhaust gas recirculation valve control strategy to remove the carbon deposits on the exhaust gas recirculation valve.

[0055] The second fault handling module 400 is used to generate corresponding jamming warning information when the jamming fault type is mechanical jamming fault type, and send the jamming warning information to the target user terminal, so that the target user can perform corresponding physical maintenance operations on the exhaust gas recirculation valve according to the jamming warning information.

[0056] Optionally, in one embodiment of this application, the exhaust gas recirculation valve anti-jamming device 10 of the hybrid engine of this application embodiment further includes: a data acquisition module and a training module.

[0057] The acquisition module is used to acquire engine exhaust temperature data and driving data of the target vehicle before collecting the operating data of the exhaust gas recirculation valve and engine of the target vehicle and inputting the operating data into the pre-trained maintenance model. It also collects the historical number of working cycles, cumulative working time and number of actions of the exhaust gas recirculation valve.

[0058] The training module is used to build a training dataset based on engine exhaust temperature data, driving data, historical working cycle count, cumulative working time and number of actions, and to train a pre-built maintenance model using the training dataset.

[0059] Optionally, in one embodiment of this application, the determination module 200 includes: a calculation unit, a first determination unit, a second determination unit, a third determination unit, a fourth determination unit, a fifth determination unit, and a sixth determination unit.

[0060] The calculation unit is used to calculate the health coefficient corresponding to the exhaust gas recirculation valve based on the carbon deposit risk value and the jamming probability, and compare the health coefficient with the preset first coefficient threshold, second coefficient threshold and third coefficient threshold, wherein the second coefficient threshold is greater than the first coefficient threshold and the second coefficient threshold is less than the third coefficient threshold.

[0061] The first determination unit is used to determine that the exhaust gas recirculation valve is in a healthy and normal state when the health coefficient is greater than the third coefficient threshold, and no preset anti-jamming operation is required.

[0062] The second determination unit is used to determine that the exhaust gas recirculation valve is in a health alert state when the health coefficient is greater than or equal to the second coefficient threshold and the health coefficient is less than or equal to the third coefficient threshold, and to generate maintenance suggestions.

[0063] The third determination unit is used to determine that the exhaust gas recirculation valve is in a health warning state and to light up the corresponding maintenance reminder light when the health coefficient is greater than or equal to the first coefficient threshold and the health coefficient is less than or equal to the second coefficient threshold.

[0064] The fourth determination unit is used to determine that the exhaust gas recirculation valve is in an unhealthy state when the health coefficient is less than the first coefficient threshold, and to obtain the valve position and drive current change information of the exhaust gas recirculation valve, and to determine the corresponding jamming fault type of the exhaust gas recirculation valve based on the valve position and drive current change information.

[0065] The fifth determination unit is used to determine that the jamming fault type of the exhaust gas recirculation valve is a soft jamming fault type if the drive current increases and the valve of the exhaust gas recirculation valve operates at a speed less than the preset valve movement speed threshold to reach the target position.

[0066] The sixth determination unit is used to determine that the jamming fault type of the exhaust gas recirculation valve is a mechanical jamming fault type if the rate of change of the driving current is greater than the preset rate of change threshold and the valve position has not changed.

[0067] Optionally, in one embodiment of this application, the first fault handling module 300 includes: an analysis unit, an automatic cleaning unit, and a flow test and verification unit.

[0068] The analysis unit is used to determine whether the amount of carbon deposits exceeds a preset carbon deposit threshold.

[0069] The automatic cleaning unit is used to adjust the ignition advance angle through the engine controller and start the automatic cleaning mode if the carbon deposit exceeds the preset carbon deposit threshold. It also increases the drive current of the exhaust gas recirculation valve and performs a preset flow test on the exhaust gas recirculation valve. It determines whether the exhaust gas recirculation valve passes the preset flow test. If the exhaust gas recirculation valve fails the preset flow test, the self-cleaning mode is deemed to have failed, and the exhaust gas recirculation valve is disabled during the current maintenance process. The corresponding fault light for the exhaust gas recirculation valve is also illuminated.

[0070] The flow test verification unit is used to activate the automatic cleaning mode and increase the drive current of the exhaust gas recirculation valve if the amount of carbon deposit is less than or equal to the preset carbon deposit threshold. It also determines whether the exhaust gas recirculation valve passes the preset flow test verification. If the exhaust gas recirculation valve fails the preset flow test verification, an automatic cleaning failure warning message is generated and sent to the target user terminal, so that the target user can perform corresponding physical maintenance operations on the exhaust gas recirculation valve based on the automatic cleaning failure warning message.

[0071] It should be noted that the explanation of the above-mentioned embodiment of the method for preventing the exhaust gas recirculation valve of a hybrid engine from jamming also applies to the exhaust gas recirculation valve anti-jamming device of the hybrid engine in this embodiment, and will not be repeated here.

[0072] The exhaust gas recirculation valve anti-sticking device for a hybrid engine according to an embodiment of this application includes a generation module 100, used to collect operating data of the exhaust gas recirculation valve and engine of a target vehicle, and input the operating data into a pre-trained maintenance model to generate a carbon deposit risk value and a sticking probability corresponding to the exhaust gas recirculation valve; a judgment module 200, used to determine whether the exhaust gas recirculation valve meets a preset sticking occurrence condition based on the carbon deposit risk value and the sticking probability, wherein, if the exhaust gas recirculation valve meets the preset sticking occurrence condition, the sticking fault type corresponding to the exhaust gas recirculation valve is determined; and a first fault processing module 300, used to determine the sticking fault type when... When the fault type is soft sticking, the amount of carbon deposits on the exhaust gas recirculation (EGR) valve is obtained, and it is determined whether the amount of carbon deposits exceeds a preset carbon deposit threshold to obtain the corresponding judgment result. Based on the judgment result, a corresponding EGR valve control strategy is determined to perform a preset self-cleaning operation on the EGR valve to remove carbon deposits. The second fault handling module 400 is used to generate corresponding sticking warning information when the sticking fault type is mechanical sticking, and send the sticking warning information to the target user terminal, so that the target user can perform corresponding physical maintenance operations on the EGR valve according to the sticking warning information. This application effectively improves the reliability of the EGR system, extends valve life, and effectively ensures the continuous healthy and stable operation of the engine by predicting the sticking risk and actively attempting to restore valve function when sticking occurs.

[0073] Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of this application. The electronic device may include: The memory 501, the processor 502, and the computer program stored on the memory 501 and capable of running on the processor 502.

[0074] When the processor 502 executes the program, it implements the method for preventing the exhaust gas recirculation valve of the hybrid engine provided in the above embodiments to prevent jamming.

[0075] Furthermore, electronic devices also include: Communication interface 503 is used for communication between memory 501 and processor 502.

[0076] The memory 501 is used to store computer programs that can run on the processor 502.

[0077] Memory 501 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.

[0078] If the memory 501, processor 502, and communication interface 503 are implemented independently, then the communication interface 503, memory 501, and processor 502 can be interconnected via a bus to complete communication between them. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of representation, Figure 5 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0079] Optionally, in a specific implementation, if the memory 501, processor 502, and communication interface 503 are integrated on a single chip, then the memory 501, processor 502, and communication interface 503 can communicate with each other through an internal interface.

[0080] Processor 502 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application.

[0081] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described method for preventing the exhaust gas recirculation valve from jamming in a hybrid engine.

[0082] This application also provides a computer program product, including a computer program, which, when executed, is used to implement the above-described method for preventing the exhaust gas recirculation valve of a hybrid engine from jamming.

[0083] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0084] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0085] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or N executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0086] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0087] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0088] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0089] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0090] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A method for preventing the exhaust gas recirculation valve of a hybrid engine from jamming, characterized in that, Includes the following steps: The operation data of the exhaust gas recirculation valve and engine of the target vehicle are collected and input into a pre-trained maintenance model to generate the carbon deposit risk value and jamming probability of the exhaust gas recirculation valve. Based on the carbon buildup risk value and the jamming probability, it is determined whether the exhaust gas recirculation valve meets the preset jamming occurrence conditions. If the exhaust gas recirculation valve meets the preset jamming occurrence conditions, the jamming fault type corresponding to the exhaust gas recirculation valve is determined. When the stuck fault type is a soft stuck fault type, the amount of carbon deposit corresponding to the exhaust gas recirculation valve is obtained, and it is determined whether the amount of carbon deposit is greater than a preset carbon deposit threshold to obtain the corresponding judgment result. Based on the judgment result, the corresponding exhaust gas recirculation valve control strategy is determined, so as to perform a preset self-cleaning operation on the exhaust gas recirculation valve through the exhaust gas recirculation valve control strategy to remove the carbon deposit on the exhaust gas recirculation valve. When the jamming fault type is a mechanical jamming fault type, a corresponding jamming warning message is generated and sent to the target user terminal, so that the target user can perform corresponding physical maintenance operations on the exhaust gas recirculation valve according to the jamming warning message.

2. The method for preventing the exhaust gas recirculation valve of a hybrid engine from jamming according to claim 1, characterized in that, Before collecting operating data of the exhaust gas recirculation valve and engine of the target vehicle and inputting the operating data into the pre-trained maintenance model, the process also includes: The engine exhaust temperature data and driving data of the target vehicle are obtained, and the historical number of working cycles, cumulative working time and number of actions of the exhaust gas recirculation valve are collected. Based on the engine exhaust temperature data, the driving data, the historical number of working cycles, the cumulative working time, and the number of actions, a training dataset is constructed, and a pre-built maintenance model is trained using the training dataset.

3. The method for preventing the exhaust gas recirculation valve of a hybrid engine from jamming according to claim 2, characterized in that, The step of determining whether the exhaust gas recirculation valve meets the preset jamming occurrence conditions based on the carbon deposit risk value and the jamming probability includes, if the exhaust gas recirculation valve meets the preset jamming occurrence conditions, determining the jamming fault type corresponding to the exhaust gas recirculation valve, including: Based on the carbon buildup risk value and the jamming probability, the health coefficient corresponding to the exhaust gas recirculation valve is calculated, and the health coefficient, a preset first coefficient threshold, a second coefficient threshold, and a third coefficient threshold are compared, wherein the second coefficient threshold is greater than the first coefficient threshold and the second coefficient threshold is less than the third coefficient threshold. When the health coefficient is greater than the third coefficient threshold, the exhaust gas recirculation valve is determined to be in a healthy and normal state, and no preset anti-blocking operation is required. When the health coefficient is greater than or equal to the second coefficient threshold and the health coefficient is less than or equal to the third coefficient threshold, the exhaust gas recirculation valve is determined to be in a health alert state, and maintenance suggestions are generated. When the health coefficient is greater than or equal to the first coefficient threshold and the health coefficient is less than or equal to the second coefficient threshold, the exhaust gas recirculation valve is determined to be in a health warning state, and the corresponding maintenance reminder light is illuminated. When the health coefficient is less than the first coefficient threshold, the exhaust gas recirculation valve is determined to be in an unhealthy state, and the valve position and drive current change information of the exhaust gas recirculation valve are obtained. Based on the valve position and drive current change information, the type of jamming fault corresponding to the exhaust gas recirculation valve is determined. If the drive current increases and the exhaust gas recirculation valve operates at a speed less than the preset valve movement speed threshold to reach the target position, then the jamming fault type of the exhaust gas recirculation valve is determined to be the soft jamming fault type. If the rate of change of the driving current is greater than the preset rate of change threshold and the valve position does not change, then the jamming fault type of the exhaust gas recirculation valve is determined to be the mechanical jamming fault type.

4. The method for preventing the exhaust gas recirculation valve of a hybrid engine from jamming according to claim 3, characterized in that, The step of determining whether the amount of carbon deposit exceeds a preset carbon deposit threshold to obtain a corresponding determination result, and determining a corresponding exhaust gas recirculation valve control strategy based on the determination result, so as to perform a preset self-cleaning operation on the exhaust gas recirculation valve through the exhaust gas recirculation valve control strategy to remove the carbon deposits on the exhaust gas recirculation valve, includes: Determine whether the amount of carbon deposit is greater than the preset carbon deposit threshold; If the amount of carbon deposits exceeds the preset carbon deposit threshold, the ignition advance angle is adjusted by the engine controller, the automatic cleaning mode is activated, the drive current of the exhaust gas recirculation valve is increased, and a preset flow test is performed on the exhaust gas recirculation valve. It is then determined whether the exhaust gas recirculation valve passes the preset flow test. If the exhaust gas recirculation valve fails the preset flow test, the self-cleaning mode is deemed to have failed, the exhaust gas recirculation valve is disabled during the current maintenance process, and the corresponding fault light for the exhaust gas recirculation valve is illuminated. If the amount of carbon buildup is less than or equal to the preset carbon buildup threshold, the automatic cleaning mode is activated, the drive current of the exhaust gas recirculation valve is increased, and it is determined whether the exhaust gas recirculation valve passes the preset flow test. If the exhaust gas recirculation valve fails the preset flow test, an automatic cleaning failure warning message is generated and sent to the target user terminal, so that the target user can perform corresponding physical maintenance operations on the exhaust gas recirculation valve based on the automatic cleaning failure warning message.

5. A device for preventing jamming of the exhaust gas recirculation valve in a hybrid engine, characterized in that, include: The generation module is used to collect the operating data of the exhaust gas recirculation valve and engine of the target vehicle, and input the operating data into a pre-trained maintenance model to generate the carbon deposit risk value and jamming probability corresponding to the exhaust gas recirculation valve. The judgment module is used to determine whether the exhaust gas recirculation valve meets the preset jamming occurrence conditions based on the carbon deposit risk value and the jamming probability. In the case that the exhaust gas recirculation valve meets the preset jamming occurrence conditions, the module determines the jamming fault type corresponding to the exhaust gas recirculation valve. The first fault handling module is used to obtain the amount of carbon deposits corresponding to the exhaust gas recirculation valve when the stuck fault type is a soft stuck fault type, and to determine whether the amount of carbon deposits is greater than a preset carbon deposit threshold to obtain a corresponding judgment result, and to determine a corresponding exhaust gas recirculation valve control strategy based on the judgment result, so as to perform a preset self-cleaning operation on the exhaust gas recirculation valve through the exhaust gas recirculation valve control strategy to remove the carbon deposits on the exhaust gas recirculation valve; The second fault handling module is used to generate corresponding jamming warning information when the jamming fault type is a mechanical jamming fault type, and send the jamming warning information to the target user terminal, so that the target user can perform corresponding physical maintenance operations on the exhaust gas recirculation valve according to the jamming warning information.

6. The anti-jamming device for the exhaust gas recirculation valve of the hybrid engine according to claim 5, characterized in that, Also includes: The data acquisition module is used to acquire the engine exhaust temperature data and driving data of the target vehicle before acquiring the operating data of the exhaust gas recirculation valve and engine of the target vehicle and inputting the operating data into the pre-trained maintenance model, and to acquire the historical number of working cycles, cumulative working time and number of actions of the exhaust gas recirculation valve. The training module is used to construct a training dataset based on the engine exhaust temperature data, the driving data, the historical number of working cycles, the cumulative working time, and the number of actions, and to train a pre-built maintenance model using the training dataset.

7. The anti-jamming device for the exhaust gas recirculation valve of a hybrid engine according to claim 6, characterized in that, The judgment module includes: The calculation unit is used to calculate the health coefficient corresponding to the exhaust gas recirculation valve based on the carbon deposit risk value and the jamming probability, and compare the health coefficient with the preset first coefficient threshold, second coefficient threshold and third coefficient threshold, wherein the second coefficient threshold is greater than the first coefficient threshold and the second coefficient threshold is less than the third coefficient threshold. The first determination unit is used to determine that the exhaust gas recirculation valve is in a healthy and normal state when the health coefficient is greater than the third coefficient threshold, and no preset anti-blocking operation is required. The second determination unit is used to determine that the exhaust gas recirculation valve is in a health alert state and generate maintenance suggestions when the health coefficient is greater than or equal to the second coefficient threshold and the health coefficient is less than or equal to the third coefficient threshold. The third determination unit is used to determine that the exhaust gas recirculation valve is in a health warning state and to light up the corresponding maintenance reminder light when the health coefficient is greater than or equal to the first coefficient threshold and the health coefficient is less than or equal to the second coefficient threshold. The fourth determination unit is used to determine that the exhaust gas recirculation valve is in an unhealthy state when the health coefficient is less than the first coefficient threshold, and to obtain the valve position and drive current change information of the exhaust gas recirculation valve, and to determine the jamming fault type of the exhaust gas recirculation valve based on the valve position and drive current change information. The fifth determination unit is used to determine that if the drive current increases and the valve of the exhaust gas recirculation valve operates at a speed less than a preset valve movement speed threshold to reach the target position, the jamming fault type of the exhaust gas recirculation valve is the soft jamming fault type. The sixth determination unit is used to determine that the jamming fault type of the exhaust gas recirculation valve is the mechanical jamming fault type if the rate of change of the driving current is greater than the preset rate of change threshold and the valve position has not changed.

8. An electronic device, characterized in that, include: The device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the program to implement the method for preventing the exhaust gas recirculation valve from sticking in a hybrid engine as described in any one of claims 1-4.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by the processor to implement the method for preventing the exhaust gas recirculation valve from sticking in a hybrid engine as described in any one of claims 1-4.

10. A computer program product, comprising a computer program, characterized in that, The computer program is executed to implement the method for preventing the exhaust gas recirculation valve from sticking in a hybrid engine as described in any one of claims 1-4.

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