Wastegate control method, electronic equipment, vehicle and computer readable storage medium

Abstract

The embodiment of the invention provides a wastegate control method, electronic equipment, a vehicle and a computer readable storage medium, and the wastegate control method comprises the following steps: when an engine is in a shutdown state, responding to a power-off instruction, obtaining a bottom dead center position of a wastegate and at least one operation parameter of the vehicle, the operation parameters are used for representing corresponding parameters in the vehicle operation process. And determining a basic bottom dead center voltage according to the bottom dead center position. Judging whether a voltage self-learning condition of the waste gate is met or not according to the at least one operation parameter and the basic bottom dead center voltage; if the voltage self-learning condition is met, target bottom dead center voltage is determined according to the basic bottom dead center voltage, and the waste gate is controlled to be closed according to the target bottom dead center voltage. Thus, the self-learning process can be executed after the power-off instruction is responded to control the wastegate to be closed, the influence of noise generated in the self-learning process on a user is reduced, the influence on vehicle driving of the user is reduced, the waiting time of the user is shortened, and the safety and reliability of the self-learning process are improved.

Description

Technical Field

[0001] This application relates to the field of vehicle control technology, and in particular to an exhaust valve control method, electronic equipment, vehicle, and computer-readable storage medium. Background Technology

[0002] With the continuous development of automotive technology, the wastegate valve of the turbocharger in a car engine can now be driven by an electric motor. When the wastegate valve is at bottom dead center (BDC), it is controlled by a target BDC voltage. Due to the thermal expansion and contraction of the wastegate valve seat material during the turbocharger's heating and cooling cycles, the wastegate valve seat position may deviate, causing the BDC valve position to deviate as well. Therefore, the target BDC voltage needs to undergo self-learning to ensure stable wastegate operation. However, this self-learning process can generate noise, affecting vehicle operation and reducing the user's driving experience. Summary of the Invention

[0003] This application provides an exhaust valve control method, electronic device, vehicle, and computer-readable storage medium, aiming to improve the problems caused by exhaust valve self-learning.

[0004] This application provides a method for controlling the exhaust valve, the method comprising: when the engine is in a stopped state, in response to a power-down command, acquiring the bottom dead center position of the exhaust valve and at least one operating parameter of the vehicle, the operating parameter being used to characterize the parameters corresponding to the vehicle during operation; determining a base bottom dead center voltage based on the bottom dead center position; determining whether a voltage self-learning condition for the exhaust valve is met based on the at least one operating parameter and the base bottom dead center voltage; if the voltage self-learning condition is met, determining a target bottom dead center voltage based on the base bottom dead center voltage, and controlling the exhaust valve to close based on the target bottom dead center voltage.

[0005] In the exhaust valve control method of this application, when the engine is in a stopped state, in response to a power-down command, the bottom dead center position of the exhaust valve is acquired. A basic bottom dead center voltage is then determined based on this position. The operating parameters, the bottom dead center position, and the basic bottom dead center voltage are used to determine whether the voltage self-learning conditions for the exhaust valve are met. If the voltage self-learning conditions are met, a target bottom dead center voltage is determined based on the bottom dead center position, and the exhaust valve is controlled to close based on the target bottom dead center voltage. Thus, this application can execute a self-learning process after responding to a power-down command to control the exhaust valve to close, reducing the impact of metallic knocking noise generated during the self-learning process on the user. Furthermore, the user does not need to wait for the self-learning to complete after power-on before driving the vehicle, reducing the impact on the user's driving and waiting time. This ensures that the vehicle's electrical equipment and engine are in a stable state during self-learning, reducing interference during the self-learning process and improving its safety and reliability. Simultaneously, this application performs self-learning based on the operating parameters during vehicle operation after power-down, enabling a complete analysis of global data throughout the entire journey, improving the accuracy of the self-learning results.

[0006] In one possible design, based on at least one operating parameter and a baseline bottom dead center voltage, it is determined whether the voltage self-learning condition for the exhaust valve is met. This includes: if the operating parameter is within a preset range and a preset time has elapsed, and the change in the baseline bottom dead center voltage is less than a preset threshold, then the voltage self-learning condition is determined to be met. If the change in the baseline bottom dead center voltage is greater than or equal to the preset threshold, or if the operating parameter is not within a preset range, then the voltage self-learning condition is determined not to be met.

[0007] In one possible design, the method further includes: determining that an operating parameter conforms to a preset range when each operating parameter conforms to its corresponding preset standard range; and determining that an operating parameter does not conform to a preset range when any operating parameter does not conform to its corresponding preset standard range.

[0008] In one possible design, before determining the basic bottom dead center voltage based on the bottom dead center position, the method further includes: acquiring the opening degree of the exhaust valve relative to the exhaust valve seat when each operating parameter conforms to a corresponding preset standard range; comparing the opening degree with a preset opening degree range; when the opening degree conforms to the opening degree range, performing the step of determining the basic bottom dead center voltage based on the bottom dead center position; when the opening degree does not conform to the opening degree range, determining that the voltage self-learning condition is not met.

[0009] In one possible design, the operating parameters include movement parameters, which include vehicle speed and mileage. The method further includes determining that the movement parameters meet a corresponding preset standard range when they satisfy at least one of the following preset conditions. The preset conditions include: vehicle speed less than a rate threshold; vehicle speed greater than 0 and less than a rate threshold; and the mileage of the exhaust valve since the last voltage self-learning is greater than or equal to a mileage threshold.

[0010] In one possible design, the operating parameters include state parameters, which include at least one of battery voltage, intake air temperature, and engine coolant temperature. The method further includes: when each state parameter meets a corresponding preset state range, determining that the state parameter meets a corresponding preset standard range; when any state parameter does not meet the corresponding preset state range, determining that the state parameter does not meet the corresponding preset standard range.

[0011] In one possible design, determining the target bottom dead center (BDC) voltage based on the baseline BDC voltage includes: if the baseline BDC voltage falls within a preset voltage range, then the baseline BDC voltage is determined to be the target BDC voltage. If the baseline BDC voltage does not fall within the preset voltage range, then an abnormality is determined to have occurred in the exhaust valve, and an alarm is issued to the user.

[0012] A second aspect of this application provides an electronic device, including a processor and a memory, wherein the memory is used to store a computer program; and the processor is used to execute the program stored in the memory to implement the exhaust valve control method as described in any of the above embodiments.

[0013] A third aspect of this application provides a vehicle comprising an engine, a motor, and electronic equipment as described in any of the above embodiments. The engine includes an exhaust valve, the motor is connected to the exhaust valve, and both the engine and the motor are communicatively connected to the electronic equipment.

[0014] A fourth aspect of this application provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the exhaust valve control method as described in any of the above embodiments. Attached Figure Description

[0015] Figure 1 This is a block diagram of the modular composition of a vehicle provided in one embodiment of this application.

[0016] Figure 2 This is a partial structural schematic diagram of an engine provided in one embodiment of this application.

[0017] Figure 3 This is a partial structural diagram of the wastegate and wastegate seat provided in an embodiment of this application.

[0018] Figure 4 This is a flowchart of the steps of an exhaust valve control method provided in an embodiment of this application.

[0019] Figure 5 This is a flowchart illustrating the steps for determining whether the voltage self-learning adjustment of the exhaust valve is satisfied, according to an embodiment of this application.

[0020] Figure 6This is a schematic diagram showing the relationship between the exhaust valve position and voltage provided in an embodiment of this application.

[0021] Figure 7 This is a block diagram of the module composition of the electronic device provided in the embodiments of this application. Detailed Implementation

[0022] To make the technical problems, technical solutions, and beneficial effects solved by this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0023] Typically, the exhaust valve undergoes a self-learning process when the vehicle is powered on to ensure that the engine can start in good condition at any time. However, the exhaust valve's self-learning process requires related components to update their data, which means that users need to wait a long time before the vehicle is running stably and can easily generate more noise, affecting the user's driving experience.

[0024] This application provides an exhaust valve control method, electronic device, vehicle, and computer-readable storage medium, which can solve the problems of exhaust valve self-learning affecting vehicle operation and generating noise that affects the user's driving experience.

[0025] The relevant terms used in this application are explained as follows: Waste gas valve: The waste gas valve is an important component of the engine's turbocharging system, primarily used to control and limit boost pressure, ensuring the engine operates safely and within its optimal parameter range. The waste gas valve's working mechanism includes a diaphragm, a spring, and the valve itself. When the intake pressure exceeds the spring pressure, the waste gas valve opens, allowing exhaust gases to bypass the turbine, thereby reducing the pressure within the turbine. This regulation ensures that the turbine speed is synchronized with the speed generated by the compressor.

[0026] Bottom dead center position: The position corresponding to the tightest fit when the exhaust valve moves towards the exhaust valve seat.

[0027] Please refer to Figure 1 , Figure 1 This is a block diagram of the modular composition of a vehicle provided in one embodiment of this application. For example... Figure 1 As shown, the vehicle 100 includes a power system 110, which includes an engine 111 and an electric motor 112. The engine 111 is used to generate power to drive the vehicle 100, and the electric motor 112 is used to provide electrical energy to the vehicle 100.

[0028] Specifically, the engine 111 converts the chemical energy of fuel (such as gasoline or diesel) into mechanical energy. The electric motor 112 converts electrical energy into mechanical energy, assisting in driving the vehicle in a hybrid electric vehicle, or performing auxiliary functions such as starting and generating electricity in a conventional gasoline vehicle. Understandably, the vehicle 100 involved in this application can be a conventional gasoline vehicle, a hybrid electric vehicle (HEV), a range-extended electric vehicle (EREV), or other vehicles equipped with an engine 111 and an electric motor 112; this application does not limit the specific type of vehicle 100.

[0029] Please see Figure 2 The vehicle 100 also includes a connecting rod 113, through which the engine 111 and the motor 112 are connected. The engine 111 includes a volute housing 1111, an exhaust valve seat 1112, an exhaust valve 1113, a turbine rocker arm 1114, and an exhaust valve shaft 1115. The motor 112 includes a motor rocker arm 1121. The motor 112 is connected to the motor rocker arm 1121. One end of the connecting rod 113 is connected to the motor rocker arm 1121, and the other end is connected to the turbine rocker arm 1114. The turbine rocker arm 1114 is connected to the exhaust valve 1113 via the exhaust valve shaft 1115, thereby controlling the exhaust valve 1113 to move toward or away from the exhaust valve seat 1112. During the control of the exhaust valve 1113, the motor 112 drives the turbine end rocker arm 1114 to rotate via the connecting rod 113. The turbine end rocker arm 1114 controls the exhaust valve 1113 to rotate accordingly via the exhaust valve shaft 1115, so that the exhaust valve 1113 can be pushed from the maximum opening position into the exhaust passage of the volute 1111, and tightly fitted with the exhaust valve seat 1112 in the volute 1111. Conversely, it can also be pushed from the tightly fitted position to the maximum opening position. Figure 3 As shown, the exhaust valve 1113 can be moved towards the position of the exhaust valve seat 1112 under control to close the exhaust valve 1113, or it can be moved away from the position of the exhaust valve seat 1112 under control to open the exhaust valve 1113.

[0030] Those skilled in the art will understand that the schematic diagram is merely an example of vehicle 100 and does not constitute a limitation on vehicle 100. It may include more or fewer components than shown, or combine certain components, or different components. For example, vehicle 100 may also include an air conditioning system and an instrument system.

[0031] Please see Figure 4 The diagram illustrates a flowchart of the exhaust valve control method provided in an embodiment of this application. Figure 4 As shown, the exhaust valve control method provided in this application includes the following steps S1 to S4.

[0032] Step S10: When the engine is in a stopped state, in response to the power-down command, obtain the bottom dead center position of the exhaust valve and at least one operating parameter of the vehicle.

[0033] The operating parameters are used to characterize the parameters corresponding to the vehicle's operation. For example, operating parameters may include vehicle speed, mileage, and engine temperature. This application does not impose too many restrictions on the specific format of the operating parameters, and those skilled in the art can set them based on actual needs.

[0034] In one embodiment of this application, the vehicle 100 further includes an electrical system 120, which is connected to the power system 110. The electrical system 120 includes at least one sensor 121. Operating parameters can be collected through the sensor 121. This application does not impose excessive limitations on the specific design of the sensor 121; those skilled in the art can configure it based on actual needs. For example, the sensor 121 may include a wheel speed sensor, an odometer sensor, a Global Positioning System (GPS) sensor, and a temperature sensor, etc.

[0035] Understandably, in order to calibrate the engine 111's shutdown position, learn sensor parameters, and update adaptive data to ensure the smoothness and accuracy of the vehicle 100's next start-up, the vehicle 100 needs to execute a self-learning process after receiving the power-down command. Before self-learning, the engine 111 needs to go through a complete "start-run-stop" cycle to associate the self-learning process with the vehicle 100's operating parameters. This effectively improves the accuracy of the vehicle 100's self-learning process and enhances the reliability of data analysis.

[0036] Step S20: Determine the base bottom dead center voltage based on the bottom dead center position.

[0037] Step S30: Based on at least one operating parameter and the basic bottom dead center voltage, determine whether the voltage self-learning condition of the exhaust valve is met.

[0038] Specifically, each operating parameter is compared with its corresponding preset standard range. When an operating parameter meets the preset standard range, it is determined that the operating parameter meets the preset range. When any operating parameter does not meet the preset standard range, it is determined that the operating parameter does not meet the preset range. In this way, it can effectively ensure that the self-learning process can only be started when all operating parameters are within the normal and stable working range, thereby reducing the data collection when the preset standard range is not met and ensuring the accuracy and reliability of the learning results.

[0039] In one embodiment of this application, the operating parameters include movement parameters, which may include vehicle speed v and mileage L. The movement parameters are determined to meet a corresponding preset standard range when they satisfy at least one of the following preset conditions: vehicle speed v is greater than or equal to a rate threshold; vehicle speed v is greater than 0 and less than a rate threshold; and the mileage L of the exhaust valve 1113 since the last voltage self-learning is greater than or equal to a mileage threshold. For example, vehicle speed v can be the maximum speed of vehicle 100 during operation, and the corresponding rate threshold can be set to 60 km / h. That is, when vehicle speed v is greater than or equal to 60 km / h, the movement parameters are determined to meet the corresponding preset standard range. Another example is that the mileage threshold can be set to 2000 km, meaning that when vehicle speed v meets... And the mileage L satisfies At that time, it is determined that the movement parameters conform to the corresponding preset standard range. Understandably, the mileage L can be reset to zero for calibration each time the vehicle 100 executes the self-learning process. This application does not impose too many limitations on the specific setting size of each preset standard range; those skilled in the art can set it based on actual needs.

[0040] Step S40: If the voltage self-learning condition is met, determine the target bottom dead center voltage based on the basic bottom dead center voltage, and control the exhaust valve to close based on the target bottom dead center voltage.

[0041] Understandably, after executing the self-learning process, vehicle 100 controls the exhaust valve 1113 to close according to the target bottom dead center voltage, and when vehicle 100 starts and runs again, vehicle 100 continues to control the exhaust valve 1113 to close according to the target bottom dead center voltage until a new self-learning process is executed again.

[0042] In one embodiment of this application, if the basic bottom dead center voltage meets the preset voltage range, the basic bottom dead center voltage is determined to be the target bottom dead center voltage. If the basic bottom dead center voltage does not meet the preset voltage range, an abnormality is determined in the exhaust valve 1113, and an alarm is issued to the user. Understandably, after determining that the basic bottom dead center voltage meets the voltage self-learning conditions, it is difficult to guarantee the reasonableness of the basic bottom dead center voltage. Therefore, by comparing the basic bottom dead center voltage with the preset voltage range, it is possible to further ensure a tight fit between the exhaust valve 1113 and the exhaust valve seat 1112, reducing the probability of the exhaust valve 1113 jamming, reducing the probability of the engine 111 being forcibly operated in an incorrect state, causing the motor 112 to stall and overheat, and ensuring the reliability and accuracy of determining the target bottom dead center voltage.

[0043] In some embodiments, such as Figure 5 As shown, step S30 may include the following steps: S31. Obtain the vehicle's status parameters and determine whether the component status parameters meet the voltage self-learning conditions.

[0044] For example, the operating parameters include state parameters, which include at least one of battery voltage, intake air temperature, and engine coolant temperature. This application does not impose excessive limitations on the specific content of the state parameters; those skilled in the art can set them based on actual needs. The battery voltage reflects the power supply status of the motor 112, and the preset state range corresponding to the battery voltage can be set to [9V, 16V]. The intake air temperature of the engine 111 refers to the actual temperature of the air entering the combustion chamber of the engine 111 before entering, directly affecting the combustion efficiency, air-fuel ratio (i.e., the ratio of air to fuel), and emission performance of the engine 111. The preset state range corresponding to the intake air temperature of the engine 111 can be set to... Engine coolant temperature reflects the cooling efficiency of the engine. The preset range of engine coolant temperature can be set to... This application does not impose excessive limitations on the specific size of each preset state range; those skilled in the art can set it based on actual needs.

[0045] When each state parameter conforms to its corresponding preset state range, it is determined that the state parameter conforms to its corresponding preset standard range. When any state parameter does not conform to its corresponding preset state range, it is determined that the state parameter does not conform to its corresponding preset standard range. In this way, it can effectively ensure that the components of vehicle 100 are in a stable state when vehicle 100 executes the self-learning process, effectively ensure the accuracy of self-learning data, and improve the efficiency of self-learning.

[0046] S32. Obtain the opening degree of the exhaust valve and determine whether the opening degree meets the voltage self-learning condition.

[0047] For example, when each operating parameter meets each preset standard range, the opening degree of the exhaust valve 1113 relative to the exhaust valve seat 1112 is obtained. The current position voltage is determined based on the current position of the exhaust valve 1113 by either looking up a table or by calculating using a fitted curve. Figure 6 As shown, Figure 6The diagram illustrates the relationship between the position of the exhaust valve 1113 and the voltage. The voltage value can be determined for each position of the exhaust valve 1113 from fully closed to fully open. It should be noted that, typically, as the exhaust valve 1113 moves away from the fully closed position towards the direction away from the exhaust valve base 1112, the voltage value gradually increases; that is, the opening degree of the exhaust valve 1113 is positively correlated with the voltage. The top dead center position refers to the maximum extent to which the exhaust valve 1113 moves in the opposite direction to its actual position towards the exhaust valve base 1112. The voltage corresponding to this position, such as the top dead center position, can be 5V. The fully closed position refers to the position where the exhaust valve 1113 is tightly fitted against the exhaust valve base 1112 at the set position. The voltage corresponding to the fully closed position can be 1V. The fully open position refers to the maximum opening degree of the exhaust valve 1113 relative to the exhaust valve base 1112 at the set position, i.e., as shown in the diagram... Figure 3 The maximum opening shown is The set position of the exhaust valve seat 1112 refers to the target position for controlling the exhaust valve 1113 to move toward the exhaust valve seat 1112. During the actual control of the exhaust valve closing process, cold contraction causes... Figure 2 and Figure 3 The actual position of the wastegate seat 1112 is farther from the set position than the wastegate 1113. When the wastegate 1113 moves to the set position, there is still a certain opening between it and the actual position, causing the wastegate 1113 to not close tightly. Therefore, the vehicle 100 needs to perform a self-learning process to ensure that the wastegate 1113 can fit snugly against the wastegate seat 1112, reduce the probability of the wastegate 1113 not closing tightly, and improve the operating efficiency of the engine 111.

[0048] In one embodiment of this application, the current position can be determined by a position sensor mounted on the motor 112, and the corresponding current position voltage can be determined by looking up a table or fitting a function. Then, the percentage between the current position voltage and the position voltage difference can be calculated to obtain the opening degree of the exhaust valve 1113 relative to the exhaust valve seat 1112 at the set position. For example, the opening degree of the exhaust valve 1113 relative to the exhaust valve seat 1112 at the set position can be calculated using formula (1). Perform the calculation: ; in, This represents the voltage value when the exhaust valve 1113 is in its current position. This represents the voltage when the exhaust valve 1113 is in the fully open position. This represents the voltage when the exhaust valve 1113 is in the fully closed position. In other embodiments, the opening degree of the exhaust valve 1113 can also be determined in other ways, and this application does not limit the specific method of determining the opening degree.

[0049] The opening degree is compared with a preset opening degree range. When the opening degree meets the range, the step of determining the basic bottom dead center voltage based on the bottom dead center position is executed. When the opening degree does not meet the range, it is determined that the voltage self-learning condition is not met. The opening degree range can be the minimum to maximum value that the exhaust valve 1113 can open. Thus, by calculating the opening degree of the exhaust valve 1113 to determine its position, the engine 111 can be effectively kept in a stable state during the self-learning process, improving the safety and accuracy of exhaust valve 1113 control and reducing the probability of improper closure between the exhaust valve 1113 and the exhaust valve seat 1112 due to incorrect exhaust valve 1113 position judgment.

[0050] S33. Determine whether the voltage at the bottom dead center of the foundation meets the voltage self-learning condition.

[0051] For example, if the change in the basic bottom dead center voltage is less than a preset threshold after the operating parameters meet the preset range and a preset time has elapsed, then the voltage self-learning condition is determined to be met. If the change in the basic bottom dead center voltage is greater than or equal to the preset threshold, or if the operating parameters do not meet the preset range, then the voltage self-learning condition is determined not to be met. Understandably, when the exhaust valve 1113 reaches the bottom dead center position, it is continuously driven to move towards the exhaust valve base 1112. At this time, the exhaust valve 1113 cannot continue to move, and the probability of a change in the exhaust valve 1113 is small. Therefore, the change in the basic bottom dead center voltage is small, i.e., the change in the basic bottom dead center voltage is less than the preset threshold. If the change in the basic bottom dead center voltage is large, it can remind the user, reducing the risk of slippage, misalignment, or other malfunctions between the exhaust valve 1113 and the exhaust valve base 1112, effectively ensuring the safe operation of the engine 111. This application does not limit the specific setting of the preset threshold.

[0052] In this way, by outputting the command to drive the exhaust valve 1113 toward the exhaust valve base 1112 and receiving feedback, cross-verification is achieved. Even if there is a slight error or drift in the position of the exhaust valve 1113, it can still be ensured that the exhaust valve 1113 reaches the actual lower dead center position. At the same time, after a preset time, if it is confirmed that the basic lower dead center voltage has not changed, the control motor 112 is stopped or the output voltage is reduced. This can effectively reduce the heat generation, deformation or damage caused by the exhaust valve 1113 continuously moving toward the exhaust valve base 1112 for a long time, thus ensuring the safety and operational stability of the exhaust valve 1113.

[0053] This application also provides an electronic device 200, please refer to... Figure 7It includes: a processor 210 and a memory 220, wherein the memory 210 is used to store computer programs; the processor 220 is used to execute the programs stored in the memory 210 to implement the exhaust valve control method described in any embodiment of this application.

[0054] This application also provides a vehicle 100, which can be referred to in conjunction with the embodiments. Figure 1 and Figure 7 The device includes an engine 111, an electric motor 112, and the electronic equipment 200 described in any embodiment of this application. The engine 111 includes an exhaust valve 1113, and the electric motor 112 is connected to the exhaust valve 1113. Both the engine 111 and the electric motor 112 are communicatively connected to the electronic equipment 200. The communication connection may include wired communication connections such as Controller Area Network (CAN) or Local Interconnect Network (LIN), or wireless communication connections such as Bluetooth or WiFi. This application does not limit the specific method of communication connection.

[0055] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the exhaust valve control method described in any embodiment of this application.

[0056] In this application, "multiple" refers to two or more.

[0057] In this application, unless otherwise expressly defined, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0058] The terms “first,” “second,” “third,” “fourth,” etc., in this application (if present) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0059] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0060] Unless otherwise specified, all steps in this application may be performed sequentially or randomly. For example, if the method includes steps A and B, it means that the method may include steps A and B performed sequentially, or it may include steps B and A performed sequentially. For example, if the method may also include step C, it means that step C may be added to the method in any order. For example, the method may include steps A, B, and C, or it may include steps A, C, and B, or it may include steps C, A, and B, etc.

[0061] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A wastegate control method characterized by, The method comprises: acquiring a bottom dead center position of a wastegate and at least one operating parameter of a vehicle in response to a power-off instruction when the engine is in a shutdown state, the operating parameter being used to represent a corresponding parameter in a vehicle operation process; determining a basic bottom dead center voltage according to the bottom dead center position; judging whether a voltage self-learning condition of the wastegate is met according to the at least one operating parameter and the basic bottom dead center voltage; if the voltage self-learning condition is met, determining a target bottom dead center voltage according to the basic bottom dead center voltage, and controlling the wastegate to be closed according to the target bottom dead center voltage.

2. The wastegate control method according to claim 1, characterized by, The judging whether the voltage self-learning condition of the wastegate is met according to the at least one operating parameter and the basic bottom dead center voltage comprises: if the operating parameter meets a preset range and a preset time length has passed, and a variation of the basic bottom dead center voltage is less than a preset threshold, it is determined that the voltage self-learning condition is met; if the variation of the basic bottom dead center voltage is greater than or equal to the preset threshold, or the operating parameter does not meet the preset range, it is determined that the voltage self-learning condition is not met.

3. The wastegate control method according to claim 2, characterized by, The method further comprises: when each of the operating parameters meets a corresponding preset standard range, it is determined that the operating parameter meets the preset range; when any of the operating parameters does not meet the corresponding preset standard range, it is determined that the operating parameter does not meet the preset range.

4. The wastegate control method according to claim 3, characterized by, Before the determining the basic bottom dead center voltage according to the bottom dead center position, the method further comprises: when each of the operating parameters meets the corresponding preset standard range, an opening degree of the wastegate relative to a wastegate seat is acquired; the opening degree is compared with a preset opening degree range; when the opening degree meets the opening degree range, the determining the basic bottom dead center voltage according to the bottom dead center position is performed; when the opening degree does not meet the opening degree range, it is determined that the voltage self-learning condition is not met.

5. The wastegate control method according to claim 3, characterized by, The operating parameter comprises a movement parameter, the movement parameter comprises a vehicle speed and a mileage, and the method further comprises: when the movement parameter meets at least one of the following preset conditions, it is determined that the movement parameter meets the corresponding preset standard range; wherein the preset conditions comprise: the vehicle speed is greater than or equal to a speed threshold; the vehicle speed is greater than 0 and less than the speed threshold, and a mileage from a last voltage self-learning of the wastegate to the present time is greater than or equal to a mileage threshold.

6. The wastegate control method according to claim 5, characterized by, The operating parameter comprises a state parameter, the state parameter comprises at least one of a battery voltage, an intake temperature and an engine water temperature, and the method further comprises: when each of the state parameters meets a corresponding preset state range, it is determined that the state parameter meets the corresponding preset standard range; when any of the state parameters does not meet the corresponding preset state range, it is determined that the state parameter does not meet the corresponding preset standard range.

7. The wastegate control method according to claim 1, characterized by, The determining the target bottom dead center voltage according to the basic bottom dead center voltage comprises: if the basic bottom dead center voltage meets a preset voltage range, the basic bottom dead center voltage is determined as the target bottom dead center voltage. If the base bottom dead center voltage does not conform to the preset voltage range, it is determined that the waste gate is in an abnormal condition, and a user is reminded by alarm.

8. An electronic device, comprising: The electronic device comprises a processor and a memory The memory is used for storing a computer program. The processor is used for executing the program stored on the memory to realize the waste gate control method in any one of claims 1-7.

9. A vehicle characterized by comprising: The vehicle comprises an engine, a motor and the electronic device in claim 8, the engine comprises a waste gate, the motor is connected with the waste gate, and the engine and the motor are in communication connection with the electronic device.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium stores a computer program, and the computer program is executed by the processor to realize the waste gate control method in any one of claims 1-7.

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