Vehicle control method and device, electronic equipment and vehicle

Abstract

The invention provides a vehicle control method and device, electronic equipment and a vehicle, and is applied to the technical field of vehicle intelligent control. The method comprises the steps that in response to a received starting instruction of an engine, the rail pressure of a fuel injection metering valve, fuel supply data and the rotating speed of the engine are obtained; whether a fuel injection metering valve is blocked or not is determined according to the rail pressure and the fuel supply data; executing a self-cleaning strategy of the oil injection metering valve in response to determining that the oil injection metering valve is stuck and the rotating speed of the engine is smaller than or equal to the preset rotating speed; according to the self-cleaning strategy of the oil injection metering valve, the working frequency of a valve element of the oil injection metering valve is reduced, and the movement amplitude of the valve element is increased. The clamping stagnation risk caused by fuel oil impurities is reduced, meanwhile, abrasion caused by long-time low-frequency long-stroke work of the oil injection metering valve is effectively avoided, and the service life of the oil injection metering valve is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle intelligent control, and in particular to a vehicle control method and device, an electronic device, and a vehicle. BACKGROUND

[0002] In modern engines, the injector metering valve (IMV) is one of the key components of the electronic control system. Its main function is to accurately control the amount of fuel entering the cylinder according to the working state of the engine to ensure the best combustion efficiency and emission performance. However, due to different environmental protection regulations, refining technologies and market demands, fuels in different regions have significant differences in sulfur content, additive composition and combustion efficiency. These differences can cause problems in key components of the fuel system such as fuel injectors and fuel filters, especially affecting the normal operation of the injector metering valve, causing it to jam. SUMMARY

[0003] Therefore, the present application aims to provide a vehicle control method, device, electronic device and vehicle to avoid the jamming of the injector metering valve.

[0004] To achieve the above purpose, the present application provides a vehicle control method, comprising:

[0005] In response to receiving a start instruction of the engine, obtaining rail pressure, fuel supply data and engine speed of the injector metering valve, and determining whether the injector metering valve is jammed according to the rail pressure and the fuel supply data;

[0006] In response to determining that the injector metering valve is jammed and the engine speed is less than or equal to a preset speed, executing an injector metering valve self-cleaning strategy; the injector metering valve self-cleaning strategy is to reduce the working frequency of the injector metering valve spool and increase the movement amplitude of the spool.

[0007] Based on the same inventive concept, the present application also provides a vehicle control device, comprising:

[0008] A judgment module configured to, in response to receiving a start instruction of the engine, obtain rail pressure, fuel supply data and engine speed of the injector metering valve, and determine whether the injector metering valve is jammed according to the rail pressure and the fuel supply data;

[0009] A cleaning module configured to, in response to determining that the injector metering valve is jammed and the engine speed is less than or equal to a preset speed, execute an injector metering valve self-cleaning strategy; the injector metering valve self-cleaning strategy is to reduce the working frequency of the injector metering valve spool and increase the movement amplitude of the spool.

[0010] Based on the same inventive concept, the application further provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable by the processor, wherein the processor implements the method described above when executing the computer program.

[0011] Based on the same inventive concept, the application further provides a vehicle, comprising the electronic device described above.

[0012] As can be seen from the above, the vehicle control method, device, electronic device and vehicle provided by the application, wherein the method comprises: in response to receiving a starting instruction of an engine, acquiring rail pressure of an injection metering valve, fuel supply data and engine speed, and determining whether the injection metering valve is stuck according to the rail pressure and the fuel supply data; in response to determining that the injection metering valve is stuck and the engine speed is less than or equal to a preset speed, executing an injection metering valve self-cleaning strategy; the injection metering valve self-cleaning strategy is to reduce the working frequency of the injection metering valve spool and increase the movement amplitude of the spool. By accurately identifying whether the injection metering valve is stuck through the rail pressure and the fuel supply data, and determining whether to execute the self-cleaning strategy according to the engine speed in the case of determining that the injection metering valve is stuck, self-cleaning is performed in the process of ensuring safe driving of the vehicle, accumulated impurities are removed by reducing the working frequency and increasing the movement amplitude, reducing the failure caused by the injection metering valve being stuck, at the same time, the wear of the injection metering valve can be reduced, the service life of the injection metering valve is prolonged, frequent maintenance and replacement of parts are avoided, thereby reducing maintenance cost and time. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the application or related art, the following will briefly introduce the drawings needed to be used in the embodiments or related art description. Obviously, the drawings in the following description are only embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0014] Figure 1 Flowchart of the vehicle control method of the embodiment of the application Figure 1 ;

[0015] Figure 2 Flowchart of the vehicle control method of the embodiment of the application Figure 2 ;

[0016] Figure 3 Schematic diagram of the vehicle control device of the embodiment of the application

[0017] Figure 4 The hardware structure schematic diagram of an electronic device provided by the embodiment of the application. DETAILED DESCRIPTION

[0018] For the purposes of the present application, the technical solutions and advantages thereof are more clearly apparent, the following further describes the present application in detail with reference to the accompanying drawings and in conjunction with specific embodiments.

[0019] It should be noted that, unless otherwise defined, technical terms or scientific terms used in the embodiments of the present application should be understood as their common meanings to those having ordinary skills in the art to which the present application pertains. The terms "first", "second", and similar terms used in the embodiments of the present application do not denote any order, quantity, or importance, but are only used to distinguish different components. The terms "comprise", "include", and similar terms mean that the elements or objects before the terms encompass the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connect" or "connected" and similar terms do not mean only physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms "upper", "lower", "left", "right", and the like only represent relative positional relationships, and when the absolute positions of the described objects change, the relative positional relationships can also change accordingly.

[0020] In the related art, the injector metering valve (IMV) is one of the key components of the electronic control system. Its main function is to accurately control the amount of fuel entering the cylinder according to the working state of the engine, to ensure the best combustion efficiency and emission performance. The injector metering valve is adjusted by the engine control unit according to the engine speed, load and other sensor data to dynamically adjust the fuel supply. However, regional differences in fuel quality pose a challenge to the normal operation of the injector metering valve. Due to differences in environmental regulations, refining technology and market demand, fuels in different regions differ significantly in sulfur content, additive composition and combustion efficiency. These differences can cause problems in key components of the fuel system such as fuel injectors and fuel filters, especially affecting the normal operation of the injector metering valve, causing it to jam. Injector metering valve jamming can cause engine starting difficulties, idle instability, reduced acceleration performance, and even engine stalling during driving. Traditionally, injector metering valve jamming problems are usually solved by repair or replacement of parts, which not only increases user inconvenience and repair costs, but also adversely affects the brand image and resources of the enterprise.

[0021] Based on the above problems, the applicant finds that: in response to receiving the start instruction of the engine, the rail pressure, fuel supply data and engine speed of the fuel injection metering valve are obtained, and it is determined whether the fuel injection metering valve is stuck according to the rail pressure and the fuel supply data; in response to determining that the fuel injection metering valve is stuck and the engine speed is less than or equal to a preset speed, a self-cleaning strategy of the fuel injection metering valve is executed: the working frequency of the valve core of the fuel injection metering valve is reduced, and the movement amplitude of the valve core is increased. Thus, without changing the hardware structure of the vehicle, by adjusting the working frequency and movement amplitude of the fuel injection metering valve, the self-cleaning function is realized, the risk of sticking caused by fuel impurities is reduced, and at the same time, the wear of the fuel injection metering valve caused by long-time low-frequency long-stroke work is effectively avoided, and the service life of the fuel injection metering valve is prolonged.

[0022] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0023] The present application provides a vehicle control method, as shown in some embodiments, the method is executed by a vehicle controller or a data processor arranged independently of the vehicle controller, and subsequent embodiments are all exemplarily illustrated taking the vehicle controller as an example; the method comprises: Figure 1

[0024] S101, in response to receiving the start instruction of the engine, the rail pressure, fuel supply data and engine speed of the fuel injection metering valve are obtained, and it is determined whether the fuel injection metering valve is stuck according to the rail pressure and the fuel supply data;

[0025] In specific implementation, when receiving the start instruction of the engine, the rail pressure, fuel supply data and engine speed of the fuel injection metering valve are obtained. The rail pressure refers to the pressure in the high-pressure oil rail in the fuel injection system. The rail pressure directly affects the accuracy and efficiency of fuel injection. The stability of the high-pressure oil rail pressure is the key to ensure that the fuel can be injected into the cylinder according to the expected amount and time. The fuel supply data includes the low-pressure oil line pressure and the cycle fuel injection amount of the fuel. The low-pressure oil line pressure ensures that the fuel can be smoothly delivered from the fuel tank to the high-pressure pump, and the cycle fuel injection amount reflects the amount of fuel injected into the cylinder in each combustion cycle. The engine speed refers to the number of revolutions per minute of the engine. The engine speed helps to determine the current working state of the engine, and adjusts the working mode of the fuel injection metering valve accordingly. According to the rail pressure and the fuel supply data, it can be accurately judged whether the fuel injection metering valve is stuck, and once it is determined that the fuel injection metering valve is stuck, the normal function of the fuel injection metering valve can be restored by executing the self-cleaning strategy, to ensure the reliability and stability of the engine under various working conditions.

[0026] S102, in response to determining that the fuel injection metering valve is stuck and the engine speed is less than or equal to a preset speed, a self-cleaning strategy of the fuel injection metering valve is executed; the self-cleaning strategy of the fuel injection metering valve is to reduce the working frequency of the valve core of the fuel injection metering valve, and increase the movement amplitude of the valve core. ​

[0027] In a specific implementation, if it is determined according to the rail pressure and the fuel supply data that the injection metering valve is stuck, and the engine speed is less than or equal to a preset speed (for example, the preset speed can be set to 1000 RPM), it indicates that the engine speed is low, at this time, the influence of the self-cleaning strategy on the engine is the smallest, because at low speed, the fuel demand is low, and the adjustment of the injection metering valve has little effect on the performance of the engine; therefore, the working frequency of the valve core of the injection metering valve is reduced, and the movement amplitude of the valve core is increased; under normal circumstances, the valve core of the injection metering valve reciprocates at a high frequency, and the movement amplitude of the valve core is small, so as to accurately control the injection amount and time of fuel, and the high frequency movement ensures the accuracy of fuel injection, but in the stuck state, it may not be enough to remove the accumulated impurities, by reducing the working frequency of the valve core and increasing the movement amplitude of the valve core, the valve core moves a longer distance each time. To help the valve core exert more force at the limit position of movement, further enhance the effect of removing carbon and impurities. Specifically, the valve core can be moved from one limit position to another limit position, so that any impurities adhering to the valve core or valve seat can be effectively removed, and at the same time, because the working frequency of the valve core of the injection metering valve is reduced, the impurities on the injection metering valve can be effectively removed without increasing the hardware wear, and the normal function is restored. This not only prolongs the service life of the injection metering valve, but also improves the adaptability of the engine under different fuel quality conditions, ensures the reliability and driving comfort of the vehicle. While improving the self-cleaning ability of the injection metering valve, it also reduces the risk of failure caused by differences in fuel quality, provides users with a more reliable driving experience, and reduces maintenance costs and waste of enterprise resources.

[0028] In the embodiment, the self-cleaning function can reduce the failure caused by the sticking of the injection metering valve, avoid frequent maintenance and replacement of parts, and thus reduce repair costs and time. By reducing the working frequency and increasing the movement amplitude to remove the accumulated impurities, the wear of the injection metering valve can be reduced, and the service life thereof can be prolonged. The self-cleaning strategy improves the adaptability of the injection metering valve to different fuel qualities, ensures that it can maintain good working condition under various fuel conditions, and enhances the flexibility and reliability of the vehicle in use in different regions.

[0029] In some embodiments, as shown in Figure 2 determining whether the injection metering valve is stuck according to the rail pressure and the fuel supply data includes:

[0030] S201, determining whether the injection metering valve is abnormal according to the rail pressure and the fuel supply data;

[0031] In a specific implementation, when the engine is started and running, the rail pressure and fuel supply data (such as low-pressure oil line pressure and cycle injection quantity) are continuously monitored to determine whether the injection metering valve has an operation abnormality. When it is determined that the rail pressure is less than or equal to a preset rail pressure, the low-pressure oil line pressure is greater than or equal to a preset pressure, and the cycle injection quantity is greater than or equal to a preset cycle injection quantity, it is determined that the injection metering valve has an operation abnormality, indicating that the fuel cannot be normally delivered to the injection nozzle, which may be caused by the injection metering valve being stuck.

[0032] S202, in response to determining that the injection metering valve has an operation abnormality, determining the number of times that the injection metering valve is determined to have an operation abnormality within a preset historical time period;

[0033] In a specific implementation, when it is determined that the injection metering valve has an operation abnormality, the number of times that the injection metering valve is determined to have an operation abnormality within a preset historical time period (for example, the preset historical time period can be set to 3S) is determined, so as to avoid misjudging the state of the injection metering valve due to temporary or incidental problems. Counting the number of times of abnormality helps to determine whether the operation abnormality of the injection metering valve is a persistent problem. If the number of times of abnormality is large, it indicates that the injection metering valve may have a serious sticking problem; if the number of times of abnormality is small, it may be an incidental problem.

[0034] S203A, in response to determining that the number of times of operation abnormality of the injection metering valve is greater than or equal to a preset number of times, determining that the injection metering valve is stuck;

[0035] In a specific implementation, when it is detected that the injection metering valve has an operation abnormality, the number of times of operation abnormality of the injection metering valve within a preset historical time period is counted. If the number of times of operation abnormality of the injection metering valve is greater than or equal to a preset number of times (for example, the preset number of times can be set to 4), it is determined that the injection metering valve has a sticking phenomenon. The working frequency of the valve core of the injection metering valve can be reduced, and the movement amplitude of the valve core of the injection metering valve can be increased, so as to help the valve core to exert greater force at the limit position of movement, thereby more effectively removing the deposits or impurities that may cause sticking.

[0036] S203B, in response to determining that the number of times of operation abnormality of the injection metering valve is less than the preset number of times, repeating the step of determining whether the injection metering valve has an operation abnormality.

[0037] In specific implementation, when it is detected that the injection metering valve has an operation abnormality, the number of operation abnormality of the injection metering valve is counted within a preset historical time length. If the number of operation abnormality of the injection metering valve is less than a preset number, it is indicated that the abnormality is sporadic or temporary, and the injection metering valve is not immediately determined to be stuck. In order to ensure that the operation state of the injection metering valve is continuously monitored, after it is determined that the number of abnormality is less than the preset number, the step of judging whether the injection metering valve has an operation abnormality is continuously executed. The operation state of the injection metering valve can be effectively monitored and judged without increasing hardware wear, and the normal function of the injection metering valve is ensured. This not only prolongs the service life of the injection metering valve, but also improves the adaptability of the engine under different fuel quality conditions, ensures the reliability and driving comfort of the vehicle, and reduces the risk of failure caused by fuel quality difference, thereby providing a more reliable driving experience for users.

[0038] In the embodiment, by continuously monitoring and analyzing the rail pressure, low-pressure oil line pressure and cycle fuel injection amount of the injection metering valve, whether the injection metering valve has an operation abnormality can be accurately diagnosed, and possible sticking problems can be responded in time, so that more serious engine failure can be avoided. When it is determined that the injection metering valve has a persistent sticking, the self-cleaning strategy can be executed to effectively remove accumulated impurities, restore the valve function, prolong the service life of the valve, and reduce the need for replacing parts.

[0039] In some embodiments, the fuel supply data includes low-pressure oil line pressure and cycle fuel injection amount of the engine; and the judging whether the injection metering valve has an operation abnormality according to the rail pressure and the fuel supply data comprises:

[0040] in response to determining that the rail pressure is less than or equal to a preset rail pressure, judging whether the injection metering valve has an operation abnormality according to the low-pressure oil line pressure and the cycle fuel injection amount of the engine;

[0041] In specific implementation, if the rail pressure is less than or equal to a preset rail pressure (for example, the preset rail pressure can be set to 190 bar), it is indicated that the pressure in the high-pressure rail is insufficient, and the fuel cannot be normally delivered to the injection nozzle. The reasons for the rail pressure abnormality can include sticking of the injection metering valve or lack of fuel in the vehicle. Therefore, whether the injection metering valve has an operation abnormality is judged according to the low-pressure oil line pressure and the cycle fuel injection amount of the engine. The low-pressure oil line pressure refers to the pressure of the fuel before being delivered from the fuel tank to the high-pressure pump, and whether the low-pressure oil line pressure is normal directly affects the fuel supply of the high-pressure oil line. The cycle fuel injection amount refers to the amount of fuel injected into the cylinder in each combustion cycle. If it is judged according to the low-pressure oil line pressure and the cycle fuel injection amount of the engine that the vehicle is not lack of fuel, it is indicated that the low rail pressure is caused by sticking of the injection metering valve.

[0042] determining that the injection metering valve is abnormal in operation in response to determining that the low-pressure oil passage pressure is greater than or equal to a preset pressure and the cycle injection quantity is greater than or equal to a preset cycle injection quantity;

[0043] In specific implementation, determining that the low-pressure oil passage pressure is greater than or equal to a preset pressure (for example, the preset pressure can be set to 3 bar) and the cycle injection quantity is greater than or equal to a preset cycle injection quantity (for example, the preset cycle injection quantity can be set to 50 mg / str) indicates that the vehicle is not out of fuel, and the rail pressure is not low due to the vehicle being out of fuel, but the injection metering valve is abnormal in operation.

[0044] determining that the injection metering valve is not abnormal in operation in response to determining that the low-pressure oil passage pressure is less than the preset pressure and / or the cycle injection quantity is less than the preset cycle injection quantity.

[0045] In specific implementation, determining that the low-pressure oil passage pressure is less than the preset pressure and / or the cycle injection quantity is less than the preset cycle injection quantity indicates that the vehicle is out of fuel, and the rail pressure is low due to the vehicle being out of fuel, but the injection metering valve is not abnormal in operation.

[0046] In this embodiment, the rail pressure, the low-pressure oil passage pressure, and the cycle injection quantity of the engine can be used to more accurately determine the operating state of the injection metering valve, avoiding misjudgment of the injection metering valve being stuck due to a single parameter being abnormal. Not only does this improve the accuracy of the determination, but it also reduces unnecessary maintenance operations, ensuring the reliability and stability of the engine under various operating conditions. While improving the monitoring and determination capabilities of the injection metering valve, this also reduces the risk of failure caused by differences in fuel quality, providing users with a more reliable driving experience while reducing maintenance costs and waste of enterprise resources.

[0047] In some embodiments, in response to determining that the injection metering valve is stuck and the engine speed is less than or equal to a preset engine speed, an injection metering valve self-cleaning strategy is executed, including:

[0048] monitoring the engine speed during a current operating period of the engine in response to determining that the injection metering valve is stuck, and executing the injection metering valve self-cleaning strategy when the engine speed is less than or equal to a preset engine speed;

[0049] wherein the current operating period of the engine is a period from when the engine start instruction is received to when the engine stop instruction is received.

[0050] In specific implementation, if it is determined that the fuel injection metering valve is stuck and the engine speed is less than or equal to a preset speed in a current operation cycle of the engine, a self-cleaning strategy of the fuel injection metering valve is performed. The current operation cycle of the engine is a period of time after receiving the engine start instruction and before receiving the engine stop instruction. In the current operation cycle, the working frequency of the fuel injection metering valve spool is reduced, and the movement amplitude of the fuel injection metering valve spool is increased, so that the spool moves a longer distance in each movement, thereby more effectively removing deposits or impurities that can cause sticking. Not only the service life of the fuel injection metering valve is prolonged, but also the adaptability of the engine under different fuel quality conditions is improved, and the reliability and driving comfort of the vehicle are ensured.

[0051] In the embodiment, by performing the self-cleaning strategy of the fuel injection metering valve in the current operation cycle of the engine when the fuel injection metering valve is stuck and the engine speed is low, not only potential problems of the fuel injection metering valve can be found and handled in time, but also unnecessary maintenance operations and costs are reduced, and a more reliable driving experience is provided for the user. The risk of failure caused by differences in fuel quality is effectively reduced, the overall performance and reliability of the vehicle are improved, false judgments and unnecessary maintenance operations are avoided, and thus the overall reliability and efficiency are improved.

[0052] In some embodiments, the reducing the working frequency of the fuel injection metering valve spool comprises:

[0053] determining a first difference between the engine speed and a preset engine speed;

[0054] determining a reduction coefficient for reducing the working frequency of the fuel injection metering valve spool according to the first difference, and taking the product of the reduction coefficient and the current working frequency of the spool as the reduced working frequency of the spool, the reduction coefficient being inversely proportional to the first difference.

[0055] In specific implementation, when the working frequency of the fuel injection metering valve spool is reduced, first, a first difference between the engine speed and a preset engine speed is determined, i.e., the preset engine speed minus the engine speed to obtain the first difference; then, a reduction coefficient for reducing the working frequency of the fuel injection metering valve spool is determined according to the first difference, specifically, wherein F1 represents the reduction coefficient, △X1 represents the first difference, and e represents the natural constant. The reduction coefficient is calculated by the formula, the reduction coefficient being inversely proportional to the first difference, and the product of the reduction coefficient and the current working frequency of the spool is taken as the reduced working frequency of the spool, so as to more accurately reduce the working frequency of the fuel injection metering valve spool and thereby enhance the self-cleaning effect.

[0056] In this embodiment, by reducing the working frequency of the injection metering valve spool with a smaller coefficient, the impurities on the injection metering valve can be effectively removed without increasing the hardware wear, and the normal function of the injection metering valve can be restored. Not only the service life of the injection metering valve is prolonged, but also the adaptability of the engine under different fuel quality conditions is improved, the reliability and driving comfort of the vehicle are ensured, and the risk of failure caused by the difference in fuel quality is reduced, providing a more reliable driving experience for the user.

[0057] In some embodiments, the increasing the movement amplitude of the spool comprises:

[0058] In response to determining that the reduced spool working frequency is greater than or equal to the preset frequency, the movement amplitude of the spool is increased to a first movement amplitude.

[0059] In specific implementation, if it is determined that the reduced spool working frequency is greater than or equal to the preset frequency (for example, the preset frequency can be set to 50% of the spool working frequency before reduction), the movement amplitude of the spool is increased to a first movement amplitude, and the first movement amplitude can be set to 120% of the current movement amplitude of the spool. The impurities on the injection metering valve can be effectively removed without increasing the hardware wear, and the normal function of the injection metering valve can be restored. Not only the service life of the injection metering valve is prolonged, but also the adaptability of the engine under different fuel quality conditions is improved, the reliability and driving comfort of the vehicle are ensured.

[0060] In response to determining that the reduced spool working frequency is less than the preset frequency, the movement amplitude of the spool is increased to a second movement amplitude, and the second movement amplitude is greater than the first movement amplitude.

[0061] In specific implementation, if it is determined that the reduced spool working frequency is less than the preset frequency, the movement amplitude of the spool is increased to a second movement amplitude, and the second movement amplitude is greater than the first movement amplitude. To ensure that the spool obtains sufficient movement amplitude, the impurities on the injection metering valve can be sufficiently removed without increasing the hardware wear, and the normal function of the injection metering valve can be restored. While improving the self-cleaning ability of the injection metering valve, the risk of failure caused by the difference in fuel quality is also reduced, providing a more reliable driving experience for the user.

[0062] In this embodiment, by dynamically adjusting the working frequency and movement amplitude of the spool, the injection metering valve can effectively perform self-cleaning under different working conditions, and the occurrence of jamming phenomenon is reduced. Not only the reliability and performance of the engine are improved, but also the service life of the injection metering valve is prolonged, the maintenance cost is reduced, and the driving experience of the user is improved.

[0063] In some embodiments, the increasing the movement amplitude of the spool to the second movement amplitude comprises:

[0064] Determining a second difference between the reduced spool working frequency and the preset frequency.

[0065] According to the second difference, an increase coefficient of the motion amplitude of the valve core is determined, a product of the increase coefficient and a current motion amplitude of the valve core is determined as a second motion amplitude, and the motion amplitude of the valve core is increased to the second motion amplitude, the increase coefficient being proportional to the second difference.

[0066] In particular implementation, when the motion amplitude of the valve core is increased to the second motion amplitude, a second difference between the reduced working frequency of the valve core and the preset frequency is first determined, that is, the preset frequency minus the reduced working frequency of the valve core to obtain the second difference; according to the second difference, an increase coefficient of the motion amplitude of the valve core is determined, specifically, Wherein F2 represents the increase coefficient, △X2 represents the first difference, and e represents a natural constant. The increase coefficient is calculated by the formula, the increase coefficient being proportional to the second difference, a product of the increase coefficient and a current motion amplitude of the valve core is determined as a second motion amplitude, and the motion amplitude of the valve core is increased to the second motion amplitude, so as to more accurately increase the motion amplitude of the valve core of the fuel injection metering valve, thereby enhancing the self-cleaning effect. Moderately increasing the motion amplitude of the valve core can avoid excessive influence on the performance of the engine, effectively remove impurities on the fuel injection metering valve without increasing hardware wear, and restore normal functions.

[0067] In the embodiment, by increasing the motion amplitude of the valve core to the second motion amplitude, the self-cleaning ability of the fuel injection metering valve is improved, the risk of failure caused by differences in fuel quality is reduced, a more reliable driving experience is provided for users, and maintenance costs and waste of enterprise resources are reduced. By continuous monitoring and dynamic adjustment, the state of the fuel injection metering valve can be more accurately judged, misjudgment and unnecessary maintenance operations are avoided, and the reliability and efficiency of the overall system are improved.

[0068] It should be noted that the method of the embodiment of the present application can be executed by a single device, such as a computer or a server. The method of the embodiment of the present application can also be applied to a distributed scenario and completed by multiple devices cooperating with each other. In this distributed scenario, one of the multiple devices can only execute one or more steps in the method of the embodiment of the present application, and the multiple devices can interact with each other to complete the method.

[0069] It is to be understood that the foregoing description is directed to embodiments of the application. Various embodiments are described herein, including the best mode of the inventors. It will be apparent, however, to those skilled in the art having the benefit of this disclosure, that variations and / or modifications of these embodiments can be made without departing from the spirit and scope of the application. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

[0070] Based on the same inventive concept, the application further provides a vehicle control device corresponding to the method of any of the above embodiments.

[0071] Reference Figure 3 The vehicle control device comprises:

[0072] A judging module 701 configured to, in response to receiving a start instruction of the engine, acquire rail pressure of the fuel injection metering valve, fuel supply data and engine speed, and determine whether the fuel injection metering valve is stuck according to the rail pressure and the fuel supply data.

[0073] A cleaning module 702 configured to, in response to determining that the fuel injection metering valve is stuck and the engine speed is less than or equal to a preset speed, execute a self-cleaning strategy of the fuel injection metering valve; the self-cleaning strategy of the fuel injection metering valve is to reduce the working frequency of the valve core of the fuel injection metering valve and increase the movement amplitude of the valve core.

[0074] Further, the judging module 701 is specifically configured to:

[0075] determine whether the fuel injection metering valve has an operation abnormality according to the rail pressure and the fuel supply data;

[0076] in response to determining that the fuel injection metering valve has an operation abnormality, determine the number of times that the fuel injection metering valve is determined to have an operation abnormality within a preset historical time period;

[0077] in response to determining that the number of times that the fuel injection metering valve has an operation abnormality is greater than or equal to a preset number of times, determine that the fuel injection metering valve is stuck;

[0078] in response to determining that the number of times that the fuel injection metering valve has an operation abnormality is less than the preset number of times, repeatedly execute the step of determining whether the fuel injection metering valve has an operation abnormality.

[0079] Further, the judging module 701 is specifically configured to:

[0080] in response to determining that the rail pressure is less than or equal to a preset rail pressure, determine whether the fuel injection metering valve has an operation abnormality according to the low-pressure oil line pressure and the cycle fuel injection amount of the engine;

[0081] determining that the injection metering valve is abnormal in operation in response to determining that the low-pressure oil passage pressure is greater than or equal to the preset pressure and the cycle injection quantity is greater than or equal to the preset cycle injection quantity;

[0082] determining that the injection metering valve is not abnormal in operation in response to determining that the low-pressure oil passage pressure is less than the preset pressure and / or the cycle injection quantity is less than the preset cycle injection quantity.

[0083] Further, the cleaning module 702 is specifically configured to:

[0084] monitoring the engine speed in a current operation period of the engine in response to determining that the injection metering valve is stuck, and executing the self-cleaning strategy of the injection metering valve when the engine speed is less than or equal to a preset engine speed.

[0085] The current operation period of the engine is a period after receiving the engine start instruction and before receiving the engine stop instruction.

[0086] Further, the cleaning module 702 is specifically configured to:

[0087] determining a first difference between the engine speed and the preset engine speed;

[0088] determining a reduction coefficient for reducing the working frequency of the valve core of the injection metering valve according to the first difference, and taking the product of the reduction coefficient and the current working frequency of the valve core as the reduced working frequency of the valve core, the reduction coefficient being inversely proportional to the first difference.

[0089] Further, the cleaning module 702 is specifically configured to:

[0090] increasing the motion amplitude of the valve core to a first motion amplitude in response to determining that the reduced working frequency of the valve core is greater than or equal to the preset frequency.

[0091] increasing the motion amplitude of the valve core to a second motion amplitude in response to determining that the reduced working frequency of the valve core is less than the preset frequency, the second motion amplitude being greater than the first motion amplitude.

[0092] Further, the cleaning module 702 is specifically configured to:

[0093] determining a second difference between the reduced working frequency of the valve core and the preset frequency;

[0094] determining an increase coefficient for increasing the motion amplitude of the valve core according to the second difference, and determining the second motion amplitude by multiplying the increase coefficient and the current motion amplitude of the valve core, and increasing the motion amplitude of the valve core to the second motion amplitude, the increase coefficient being proportional to the second difference.

[0095] For the convenience of description, the above apparatus is described in various modules in terms of functions respectively. Of course, the functions of the modules can be implemented in one or more software and / or hardware in the implementation of the present application.

[0096] The apparatus of the above embodiments is used to implement the corresponding vehicle control method of any of the above embodiments, and has the beneficial effects of the corresponding method embodiments, which are not described here again.

[0097] Based on the same inventive concept, the present application also provides an electronic device corresponding to the method of any of the above embodiments, comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the vehicle control method of any of the above embodiments when executing the program.

[0098] Figure 4 A more specific hardware structure of an electronic device provided by the present embodiment is shown, which can include a processor 1010, a memory 1020, an input / output interface 1030, a communication interface 1040 and a bus 1050. The processor 1010, the memory 1020, the input / output interface 1030 and the communication interface 1040 are connected to each other through the bus 1050 for communication within the device.

[0099] The processor 1010 can be implemented in the form of a general-purpose CPU (Central Processing Unit), a microprocessor, an ASIC (Application Specific Integrated Circuit) or one or more integrated circuits, etc., for executing related programs to implement the technical solutions provided by the present embodiment.

[0100] The memory 1020 can be implemented in the form of a ROM (Read Only Memory), a RAM (Random Access Memory), a static storage device, a dynamic storage device, etc. The memory 1020 can store an operating system and other application programs, and when the technical solutions provided by the present embodiment are implemented by software or firmware, the related program codes are stored in the memory 1020 and executed by the processor 1010.

[0101] The input / output interface 1030 is used to connect input / output modules to realize information input and output. The input / output modules can be configured as components in the device (not shown in the figure) or externally connected to the device to provide corresponding functions. The input devices can include a keyboard, a mouse, a touch screen, a microphone, various sensors, etc., and the output devices can include a display, a speaker, a vibrator, an indicator light, etc.

[0102] The communication interface 1040 is configured to connect a communication module (not shown in the figure) to realize the communication interaction between the device and other devices. The communication module can realize communication through a wired manner (for example, a USB, a network cable, etc.) or through a wireless manner (for example, a mobile network, WIFI, Bluetooth, etc.).

[0103] The bus 1050 includes a path for transmitting information between various components (for example, the processor 1010, the memory 1020, the input / output interface 1030, and the communication interface 1040) of the device.

[0104] It should be noted that although the above device only shows the processor 1010, the memory 1020, the input / output interface 1030, the communication interface 1040, and the bus 1050, in the specific implementation process, the device can also include other components necessary for normal operation. In addition, those skilled in the art can understand that the above device can also only contain the components necessary for the implementation of the embodiments of the present specification, and does not have to contain all the components shown in the figure.

[0105] The electronic device of the above embodiment is used to realize the corresponding vehicle control method in any of the above embodiments, and has the beneficial effects of the corresponding method embodiments, which are not described here.

[0106] Based on the same inventive concept, corresponding to the method of any of the above embodiments, the present application also provides a non-transitory computer-readable storage medium storing computer instructions for causing the computer to execute the vehicle control method according to any of the above embodiments.

[0107] The computer-readable medium of the present embodiment includes permanent and non-permanent, removable and non-removable media, which can be realized by any method or technology to store information. The information can be computer-readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette tape, magnetic tape disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information accessible by a computing device.

[0108] The storage medium of the above embodiments stores computer instructions for causing the computer to perform the vehicle control method according to any one of the above embodiments, and has the beneficial effects of the corresponding method embodiments, which are not repeated here.

[0109] Based on the same concept, the present application also provides a computer program product corresponding to the method of any of the above embodiments, comprising computer program instructions, which, when executed on a computer, cause the computer to perform the method according to any one of the above embodiments, and have the beneficial effects of the corresponding method embodiments, which are not repeated here.

[0110] It can be understood that, before using the technical solutions of the various embodiments in the present disclosure, the type, use range, use scenario, etc. of the personal information involved will be informed to the user in a proper manner, and the authorization of the user will be obtained.

[0111] For example, in response to receiving the active request of the user, prompt information is sent to the user to explicitly prompt the user that the operation requested to be performed will require the acquisition and use of personal information of the user. Thus, the user can voluntarily choose whether to provide personal information to the software or hardware such as electronic devices, application programs, servers or storage media that perform the technical solutions of the present disclosure according to the prompt information.

[0112] As an optional but not limited implementation manner, in response to accepting the active request of the user, the manner of sending prompt information to the user may, for example, be a pop-up window manner, in which the prompt information can be presented in the form of text. In addition, the pop-up window can also carry selection controls for the user to select "agree" or "disagree" to provide personal information to the electronic device.

[0113] It can be understood that the above notification and user authorization process is only illustrative, and does not limit the implementation manner of the present disclosure, and other manners meeting the relevant laws and regulations can also be applied to the implementation manner of the present disclosure.

[0114] Those skilled in the art will understand that the discussion of any of the above embodiments is only exemplary and is not intended to imply that the scope of the present application is limited to these examples; under the idea of the present application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of brevity.

[0115] Additionally, to simplify the description and discussion, and so as not to obscure the embodiments of the application being presented, the well-known functions or constructions of integrated circuit (IC) chips and other components can or can not be shown in the figures and will be omitted as not to unnecessarily obscure the embodiments of the application being presented. Moreover, the devices can be shown in block diagram form in order to avoid obscuring the embodiments of the application, and this also acknowledges the fact that the details in regard to the implementation of the block diagram devices are highly dependent on the platform within which the embodiments of the application are to be implemented (i.e., these details should be well within the purview of one of ordinary skill in the art). Where specific details are set forth in order to describe an illustrative embodiment of the application, it will be apparent to one of ordinary skill in the art that the embodiments of the application can be practiced without, or with variation of, these specific details. Thus, the description is to be considered as illustrative and not restrictive, and the scope of the application should be determined not with reference to the above description, but should be given to the appended claims.

[0116] While the application has been described in connection with specific embodiments thereof, many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) can use the embodiments discussed.

[0117] Embodiments of the application are intended to cover all such alternatives, modifications and variations as falling within the scope of the broadest possible interpretation of the application as set forth in the appended claims. Accordingly, any and all such modifications, variations or equivalents that fall within the spirit and scope of the underlying principles should be intended to be embraced by the claims.

Claims

1. A vehicle control method, characterized in that, include: In response to receiving an engine start command, the system acquires the rail pressure of the fuel injection metering valve, fuel supply data, and engine speed, and determines whether the fuel injection metering valve is stuck based on the rail pressure and fuel supply data. In response to the determination that the fuel injection metering valve is stuck and the engine speed is less than or equal to a preset speed, a fuel injection metering valve self-cleaning strategy is executed; the fuel injection metering valve self-cleaning strategy is to reduce the operating frequency of the fuel injection metering valve core and increase the movement amplitude of the valve core.

2. The vehicle control method according to claim 1, characterized in that, The step of determining whether the fuel injection metering valve is stuck based on the rail pressure and fuel supply data includes: Determine whether the fuel injection metering valve is malfunctioning based on the rail pressure and fuel supply data. In response to determining that the fuel injection metering valve has an operational abnormality, the number of times the fuel injection metering valve has been judged to have an operational abnormality within a preset historical time period is determined; If the number of times the fuel injection metering valve is found to be malfunctioning is greater than or equal to a preset number, then the fuel injection metering valve is determined to be stuck. In response to the fact that the number of times the fuel injection metering valve is found to be malfunctioning is less than a preset number, the step of determining whether the fuel injection metering valve is malfunctioning is repeated.

3. The vehicle control method according to claim 2, characterized in that, The fuel supply data includes low-pressure fuel line pressure and engine fuel injection quantity; the step of determining whether the fuel injection metering valve is malfunctioning based on the rail pressure and fuel supply data includes: In response to determining that the rail pressure is less than or equal to the preset rail pressure, the fuel injection metering valve is judged to have any abnormal operation based on the low-pressure oil circuit pressure and the engine's cyclic fuel injection quantity. In response to determining that the low-pressure oil circuit pressure is greater than or equal to the preset pressure and the circulating oil injection quantity is greater than or equal to the preset circulating oil injection quantity, it is determined that the oil injection metering valve has an operational abnormality. In response to determining that the low-pressure oil circuit pressure is less than the preset pressure and / or the circulating oil injection quantity is less than the preset circulating oil injection quantity, it is determined that the oil injection metering valve does not have any operational abnormalities.

4. The vehicle control method according to claim 1, characterized in that, The step of executing a self-cleaning strategy for the fuel injection metering valve in response to determining that the fuel injection metering valve is stuck and the engine speed is less than or equal to a preset speed includes: In response to the determination that the fuel injection metering valve is stuck, the engine speed is monitored during the current engine operating cycle, and a fuel injection metering valve self-cleaning strategy is executed when the engine speed is less than or equal to a preset engine speed. The current operating cycle of the engine is the period between receiving the engine start command and receiving the engine stop command.

5. The vehicle control method according to claim 1, characterized in that, The reduction of the operating frequency of the fuel injection metering valve spool includes: Determine the first difference between the engine speed and the preset engine speed; The reduction coefficient for reducing the operating frequency of the fuel injection metering valve core is determined based on the first difference. The product of the reduction coefficient and the current operating frequency of the valve core is taken as the reduced operating frequency of the valve core. The reduction coefficient is inversely proportional to the first difference.

6. The vehicle control method according to claim 5, characterized in that, The increase in the movement amplitude of the valve core includes: In response to determining that the reduced valve core operating frequency is greater than or equal to the preset frequency, the movement amplitude of the valve core is increased to the first movement amplitude; In response to determining that the reduced valve core operating frequency is less than a preset frequency, the movement amplitude of the valve core is increased to a second movement amplitude, which is greater than the first movement amplitude.

7. The vehicle control method according to claim 6, characterized in that, Increasing the movement amplitude of the valve core to a second movement amplitude includes: Determine the second difference between the reduced valve core operating frequency and the preset frequency; The amplification factor for increasing the movement amplitude of the valve core is determined based on the second difference. The product of the amplification factor and the current movement amplitude of the valve core is determined as the second movement amplitude. The movement amplitude of the valve core is increased to the second movement amplitude. The amplification factor is proportional to the second difference.

8. A vehicle control device, characterized in that, include: The judgment module is configured to, in response to receiving an engine start command, acquire the rail pressure of the fuel injection metering valve, fuel supply data and engine speed, and determine whether the fuel injection metering valve is stuck based on the rail pressure and fuel supply data. The cleaning module is configured to execute a self-cleaning strategy for the fuel injection metering valve in response to determining that the fuel injection metering valve is stuck and the engine speed is less than or equal to a preset speed: reducing the operating frequency of the fuel injection metering valve spool and increasing the movement amplitude of the spool.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that, When the processor executes the program, it implements the method as described in any one of claims 1 to 7.

10. A vehicle, characterized in that, The vehicle includes the electronic equipment as described in claim 9.

Images