Vehicle Launch Control Using Brake Pressure and Throttle Input
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Solution Overview
Problem
Existing vehicle systems restrict the ability to input driving intentions simultaneously through the brake and accelerator pedals, preventing simultaneous braking and acceleration, and require a creeping mode to resume speed, which slows down the starting process.
Innovation Solution
A vehicle control method that acquires brake master cylinder pressure and accelerator pedal opening degree, allowing the vehicle to enter a launch starting function when specific conditions are met, enabling torque output while braking, thus allowing quicker and more powerful starts without creeping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the brake pedal and accelerator pedal are designed as two independent components on the same side, then the driver can only step on one at the same time, but the driving intention cannot be input through the accelerator pedal when the driver brakes through the brake pedal, and braking cannot be carried out at the same time when the driver accelerates through the accelerator pedal
Solution Approach 1:
The patent combines the brake pedal and accelerator pedal into a single integrated pedal assembly. The pedal structure includes both a brake region and an accelerator region on the same pedal body, allowing the driver to apply both braking and acceleration forces simultaneously on the same component. This merging eliminates the mutual exclusion constraint of separate pedals while maintaining distinct functional zones.
Solution Approach 2:
The single pedal assembly serves multiple functions: it can be used for normal acceleration by pressing the accelerator region, for braking by pressing the brake region, and for simultaneous braking and acceleration by applying force to both regions at the same time. This multi-functionality allows the pedal to adapt to various driving intentions including launch control scenarios.
2Reliability
If the brake pedal is stepped on, then the engine is prohibited to output a torque, but in case of resuming running after stopping braking, it is necessary to enter the creeping mode first, and then control the engine to slowly increase the output torque through the accelerator pedal to increase a vehicle speed, wherein the vehicle speed increases slowly
Solution Approach 1:
The system dynamically adjusts engine torque output based on the real-time state of the single pedal. When the pedal is in the brake region, the engine torque is restricted for safety. When the pedal is in the accelerator region, normal torque output is permitted. When both functions are simultaneously activated, the system dynamically allows torque output while maintaining brake pressure, enabling rapid acceleration from stationary position without creeping mode.
Solution Approach 2:
The control system changes the torque output parameter of the engine based on the detected pedal state. By monitoring the pressure distribution and position on the single pedal, the system adjusts the engine torque parameter from restricted (during braking) to full output (during acceleration), and enables a special parameter state for simultaneous operation that allows rapid speed increase.
Data Source
AI summary
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.