Vehicle control method, device, storage medium, and vehicle

Patent metadata

Field	Value
Publication number	US-11801837-B2
Application number	US-202117789511-A
Country	US
Kind code	B2
Filing date	Mar 30, 2021
Priority date	Apr 21, 2020
Publication date	Oct 31, 2023
Grant date	Oct 31, 2023

Abstract

The present disclosure relates to the technical field of vehicles, and particularly to a vehicle control method and apparatus, a storage medium and a vehicle. The method includes: acquiring a pressure of a brake master cylinder and an opening degree of an accelerator pedal; when the pressure of the brake master cylinder is greater than a first preset pressure threshold, the opening degree of the accelerator pedal is no less than a first preset opening degree threshold, and a moment when the pressure of the brake master cylinder is greater than the first preset pressure threshold is earlier than a moment when the opening degree of the accelerator pedal is no less than the first preset opening degree threshold, controlling the vehicle to enter an activated state of a launch starting function; and when the vehicle is in the activated state, controlling an engine of the vehicle to output a target torque. Thus, a driver enables the vehicle to enter the activated state of the launch starting function before starting by operating a brake pedal and the accelerator pedal at the same time, and also enables the vehicle to provide a torque output according to a state of the accelerator pedal while being in a brake state, thus enabling the vehicle to start quickly with greater power, reducing an acceleration time and realizing launch starting.

First claim

The invention claimed is:

1. A vehicle control method, comprising:
by one or more processors, acquiring a pressure of a brake master cylinder and an opening degree of an accelerator pedal;
by the one or more processors, when the pressure of the brake master cylinder is greater than a first preset pressure threshold, the opening degree of the accelerator pedal is no less than a first preset opening degree threshold, and a moment when the pressure of the brake master cylinder is greater than the first preset pressure threshold is earlier than a moment when the opening degree of the accelerator pedal is no less than the first preset opening degree threshold, controlling the vehicle to enter an activated state of a launch starting function; and
by the one or more processors, when the vehicle is in the activated state, controlling an engine of the vehicle to output a target torque according to the opening degree of the accelerator pedal, and controlling a brake state of the vehicle according to the pressure of the brake master cylinder.

2. The method according to claim 1 , wherein before the step of controlling the vehicle to enter the activated state of the launch starting function, the method further comprises:
acquiring first vehicle state data.

3. The method according to claim 2 , wherein the step of controlling the vehicle to enter the activated state of the launch starting function, comprises:
when the first vehicle state data satisfies all first preset conditions for entering the activated state, controlling the vehicle to enter the activated state of the launch starting function;
wherein the first preset conditions comprise one or more of the following conditions: the engine is in a running state, a clutch transmission gear of the vehicle is in a forward gear, a vehicle speed is less than a first preset vehicle speed threshold, an electronic stability system of a vehicle body of the vehicle is in an off state, an electronic parking brake system of the vehicle is in an off state, a seat belt of the vehicle is in a fastened state, and a power system of the vehicle is trouble free.

4. The method according to claim 3 , wherein the method further comprises:
acquiring second vehicle state data;
when the second vehicle state data satisfies any one of second preset conditions for quitting the activated state, controlling the vehicle to quit the activated state of the launch starting function;
wherein the second preset conditions comprise one or more of the following conditions: the engine is not in the running state, the clutch transmission gear is not in the forward gear, a brake instruction is received when the vehicle speed is greater than a second preset vehicle speed threshold, the electronic stability system of the vehicle body is in an on state, the electronic parking brake system is in an on state, the seat belt is in an unfastened state, and the power system of the vehicle is in trouble, the opening degree of the accelerator pedal is less than a second preset opening degree threshold, and a temperature of the engine is not in a preset operating temperature range;
wherein the second preset opening degree threshold is less than the first preset opening degree threshold, and the second preset vehicle speed threshold is greater than the first preset vehicle speed threshold.

5. The method according to claim 1 , wherein when the vehicle is in the activated state, the step of controlling the engine of the vehicle to output the target torque according to the opening degree of the accelerator pedal, and controlling the brake state of the vehicle according to the pressure of the brake master cylinder, comprises:
receiving an engine speed limit threshold sent by a clutch transmission, wherein the engine speed limit threshold is used for ensuring that the vehicle is capable of keeping still when the pressure of the brake master cylinder is greater than the first preset pressure threshold; and
determining the target torque according to the engine speed limit threshold and the opening degree of the accelerator pedal, and controlling the engine to output the target torque.

6. The method according to claim 5 , wherein the step of determining the target torque according to the engine speed limit threshold and the opening degree of the accelerator pedal, and controlling the engine to output the target torque, comprises:
determining an air path torque of the engine and a fire path torque of the engine according to the engine speed limit threshold and the opening degree of the accelerator pedal, wherein the air path torque of the engine is greater than the fire path torque of the engine, and a difference between the air path torque of the engine and the fire path torque of the engine is a preset torque threshold; and
sending the air path torque of the engine and the fire path torque of the engine to the engine, so that the engine outputs the fire path torque of the engine as the target torque.

7. The method according to claim 1 , wherein the method further comprises:
when the vehicle does not move within a preset duration after entering the activated state, controlling the vehicle to enter a standby state of the launch starting function; and
when the vehicle is in the standby state, the pressure of the brake master cylinder is no greater than a second preset pressure threshold, and the opening degree of the accelerator pedal is no greater than a third preset opening degree threshold, controlling the vehicle to quit the standby state;
wherein the second preset pressure threshold is less than the first preset pressure threshold, and the third preset opening degree threshold is less than a second preset opening degree threshold.

8. The method according to claim 1 , wherein the method further comprises:
when the vehicle is in the activated state and the pressure of the brake master cylinder is no greater than the first preset pressure threshold, increasing an engine speed threshold required by a clutch transmission during gear shifting to a preset target value.

9. The method according to claim 8 , wherein the method further comprises:
when the vehicle is in the activated state, increasing a safe torque threshold of the clutch transmission.

10. A non-transitory computer-readable medium including a computer-readable code stored thereon, and when the computer-readable code is executed by a processor, the vehicle control method according to claim 1 is performed.

11. A vehicle control apparatus, comprising:
one or more processors; and
a storage device storing a computer program, when the computer program is executed by the one or more processors, the vehicle control apparatus is made to perform operations comprising:
acquiring a pressure of a brake master cylinder and an opening degree of an accelerator pedal;
when the pressure of the brake master cylinder is greater than a first preset pressure threshold, the opening degree of the accelerator pedal is no less than a first preset opening degree threshold, and a moment when the pressure of the brake master cylinder is greater than the first preset pressure threshold is earlier than a moment when the opening degree of the accelerator pedal is no less than the first preset opening degree threshold, controlling the vehicle to enter an activated state of a launch starting function; and
when the vehicle is in the activated state, controlling an engine of the vehicle to output a target torque according to the opening degree of the accelerator pedal, and controlling a brake state of the vehicle according to the pressure of the brake master cylinder.

12. The vehicle control apparatus according to claim 11 , wherein the operations furt

Assignees

• Great Wall Motor Co Ltd

Inventors

• Wang Yinlei
• Pan Wei
• Guo tengfei
• Li Yushan
• Liu Xiu
• Deng Weifeng

Classifications

• B60W30/18027 Primary

  Drive off, accelerating from standstill · CPC title

• B60W10/06

  including control of combustion engines · CPC title

• B60W10/18

  including control of braking systems · CPC title

• B60W2510/182

  Brake pressure, e.g. of fluid or between pad and disc · CPC title

• B60W2540/10

  Accelerator pedal position · CPC title