CN-121989910-A - Vehicle control method, device, apparatus, storage medium, and program product

CN121989910ACN 121989910 ACN121989910 ACN 121989910ACN-121989910-A

Abstract

The application discloses a vehicle control method, a device, equipment, a storage medium and a program product, and belongs to the technical field of intelligent vehicle control. The method comprises the steps of responding to a mode switching instruction received by a vehicle, filling oil into a clutch at a first oil filling pressure, determining the real-time rotating speed of a motor and the average rotating speed of the motor in a specified history duration when the vehicle meets a first specified condition and the process of filling oil into the clutch at the first oil filling pressure is finished, determining the difference value between the real-time rotating speed and the average rotating speed, and reducing the first oil filling pressure to obtain a second oil filling pressure when the vehicle meets a second specified condition based on the difference value, so that the vehicle is filled with oil into the clutch at the second oil filling pressure when the vehicle receives the mode switching instruction next time. The application realizes the optimization of the oil filling pressure and improves the smoothness of vehicle driving.

Inventors

GUO LULU
WANG QINGLAI

Assignees

安徽开阳科技有限公司
奇瑞汽车股份有限公司

Dates

Publication Date: 20260508
Application Date: 20260227

Claims (10)

1.A vehicle control method characterized by comprising: In response to the vehicle receiving a mode switching command, filling oil to a clutch at a first oil filling pressure, the mode switching command being used to instruct the vehicle to switch from a mode in which the vehicle is driven by a motor to a mode in which the vehicle is driven by both the motor and the engine; when the vehicle meets a first appointed condition, and the process of filling oil to the clutch by the first oil filling pressure is finished, determining the real-time rotating speed of the motor and the average rotating speed of the motor in an appointed historical time; And determining a difference value between the real-time rotating speed and the average rotating speed, and reducing the first oil filling pressure to obtain a second oil filling pressure under the condition that the vehicle meets a second specified condition based on the difference value, so that the vehicle fills oil into a clutch at the second oil filling pressure when receiving the mode switching instruction next time.
2. The vehicle control method according to claim 1, characterized in that the process of determining that the vehicle satisfies a second specified condition based on the difference value includes: In the current driving cycle of the vehicle, when the difference value is greater than or equal to a specified difference value, performing one-time abnormal record, and when the difference value is smaller than the specified difference value, deleting the historical abnormal record; and determining that the vehicle satisfies a second specified condition in response to the number of times of the abnormal record being greater than or equal to the specified number of times.
3. The vehicle control method according to claim 1, characterized in that said decreasing the first oil charge pressure to obtain a second oil charge pressure includes: Determining a correction value for the first charge pressure; And taking the difference value between the first oil filling pressure and the corrected value as the second oil filling pressure.
4. The vehicle control method according to claim 3, characterized in that the method further comprises: determining an accumulated correction value, wherein the accumulated correction value is the sum of corresponding correction values when the operation of reducing the first oil filling pressure is historically executed; And prohibiting the first oil filling pressure from being reduced in response to the accumulated correction value reaching a specified upper limit value.
5. The vehicle control method according to claim 3, characterized in that the determining of the correction value for the first oil charge pressure includes: determining an accumulated correction value, wherein the accumulated correction value is the sum of corresponding correction values when the operation of reducing the first oil filling pressure is historically executed; and determining the correction value based on the accumulated correction value, wherein the accumulated correction value is inversely related to the correction value.
6. The vehicle control method according to claim 1, characterized in that the process of determining that the vehicle satisfies a first specified condition includes: Acquiring the temperature of clutch hydraulic oil and the torque fluctuation amplitude of an input shaft of the vehicle; and determining that the vehicle satisfies a first specified condition in response to the temperature being within a specified temperature range and the torque ripple magnitude being less than or equal to a specified magnitude.
7. A vehicle control apparatus characterized by comprising: An operating module configured to charge a clutch with a first charge pressure in response to the vehicle receiving a mode switch command, the mode switch command being for instructing the vehicle to switch from a motor-driven mode to a motor-and-engine co-driven mode; A determining module configured to determine a real-time rotational speed of the motor and an average rotational speed of the motor over a specified historical period when the vehicle satisfies a first specified condition and the process of filling the clutch with oil at a first oil filling pressure is completed; And the correction module is configured to determine a difference value between the real-time rotating speed and the average rotating speed, and reduce the first oil filling pressure to obtain a second oil filling pressure when the vehicle meets a second specified condition based on the difference value, so that the vehicle fills oil into a clutch at the second oil filling pressure when receiving the mode switching instruction next time.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and running on the processor, characterized in that the processor implements the method of any one of claims 1 to 6 when executing the program.
9. A non-transitory computer readable storage medium storing computer instructions for causing a computer to perform the method of any one of claims 1 to 6.
10. A computer program product comprising computer program instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 6.

Description

Vehicle control method, device, apparatus, storage medium, and program product Technical Field The present application relates to the field of intelligent vehicle control technologies, and in particular, to a vehicle control method, apparatus, device, storage medium, and program product. Background Hybrid vehicles are an important development direction for the modern automotive industry. When the vehicle is switched from the pure electric driving mode to the common driving mode of the motor and the engine, the clutch is required to be charged with oil accurately to realize the stable engagement of the clutch, so that the switching of the driving mode is completed, and the smoothness of the driving of the vehicle and the service life of parts are directly influenced by the charging pressure of the clutch. In the related art, the clutch is usually charged with oil rapidly at a fixed oil charging pressure, or the current oil charging pressure of the clutch is fed back in real time through a pressure sensor, so that the oil charging pressure is regulated accurately. However, the vehicle is equipped with a pressure sensor, which increases hardware cost, and in the case of filling oil with a fixed filling oil pressure, may cause the clutch to be excessively filled with oil, resulting in a decrease in smoothness of driving the vehicle. Disclosure of Invention The embodiment of the application provides a vehicle control method, a device, equipment, a storage medium and a program product, which can solve the problem of excessive oil filling of a clutch. The technical scheme is as follows: In one aspect, a vehicle control method is provided, the method comprising: In response to the vehicle receiving a mode switching command, filling oil to a clutch at a first oil filling pressure, the mode switching command being used to instruct the vehicle to switch from a mode in which the vehicle is driven by a motor to a mode in which the vehicle is driven by both the motor and the engine; when the vehicle meets a first appointed condition, and the process of filling oil to the clutch by the first oil filling pressure is finished, determining the real-time rotating speed of the motor and the average rotating speed of the motor in an appointed historical time; And determining a difference value between the real-time rotating speed and the average rotating speed, and reducing the first oil filling pressure to obtain a second oil filling pressure under the condition that the vehicle meets a second specified condition based on the difference value, so that the vehicle fills oil into a clutch at the second oil filling pressure when receiving the mode switching instruction next time. In one possible implementation, the determining that the vehicle satisfies a second specified condition based on the difference value includes: In the current driving cycle of the vehicle, when the difference value is greater than or equal to a specified difference value, performing one-time abnormal record, and when the difference value is smaller than the specified difference value, deleting the historical abnormal record; and determining that the vehicle satisfies a second specified condition in response to the number of times of the abnormal record being greater than or equal to the specified number of times. In another possible implementation manner, the reducing the first oil filling pressure to obtain a second oil filling pressure includes: Determining a correction value for the first charge pressure; And taking the difference value between the first oil filling pressure and the corrected value as the second oil filling pressure. In another possible implementation, the method further includes: determining an accumulated correction value, wherein the accumulated correction value is the sum of corresponding correction values when the operation of reducing the first oil filling pressure is historically executed; And prohibiting the first oil filling pressure from being reduced in response to the accumulated correction value reaching a specified upper limit value. In another possible implementation manner, the determining the correction value for the first oil filling pressure includes: determining an accumulated correction value, wherein the accumulated correction value is the sum of corresponding correction values when the operation of reducing the first oil filling pressure is historically executed; and determining the correction value based on the accumulated correction value, wherein the accumulated correction value is inversely related to the correction value. In another possible implementation, the determining that the vehicle meets the first specified condition includes: Acquiring the temperature of clutch hydraulic oil and the torque fluctuation amplitude of an input shaft of the vehicle; and determining that the vehicle satisfies a first specified condition in response to the temperature being within a specified temperature range and the tor