A control method and system for vehicle launch

By combining the automatic parking function with the accelerator pedal signal to calculate the driving torque and apply braking force, the problem of wheel slippage caused by the driver's coordination of the accelerator and brake pedals is solved, which simplifies the vehicle launch control and improves acceleration performance and the lifespan of key modules.

CN116714587BActive Publication Date: 2026-06-23CHONGQING CHANGAN TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHONGQING CHANGAN TECH CO LTD
Filing Date
2023-05-26
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

In existing technologies, drivers need to coordinate the accelerator and brake pedals to control the vehicle's launch, which means that the driver's skill level affects the acceleration effect and can easily cause wheel slippage due to insufficient braking force.

Method used

The automatic parking function receives launch start requests, calculates drive torque using accelerator pedal signals, applies adaptive braking force to keep the vehicle parked, and starts the vehicle when the brake pressure is released, reducing reliance on the brake pedal.

Benefits of technology

The launch control process has been simplified, preventing wheel slippage caused by insufficient braking force, and the launch control function has been optimized to ensure the service life of the power unit and transmission.

✦ Generated by Eureka AI based on patent content.

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    Figure CN116714587B_ABST
Patent Text Reader

Abstract

The present application relates to a kind of vehicle control method and system of catapult start, enable catapult start mode after receiving the request of catapult start;In response to automatic parking function has activated, the driving torque of vehicle is obtained according to the opening signal of accelerator pedal, the brake force that is adapted to driving torque is applied by automatic parking unit, keep vehicle in parking state;In response to the current state of vehicle meets preset condition, release the brake pressure of vehicle, the opening of accelerator pedal exceeds the opening threshold value set and no driver braking request is received, the preset condition is.The present application reduces the dependence of driver on brake pedal, simplifies the process of catapult start, avoids the phenomenon that wheel skids due to the brake force that driver input is insufficient.Simultaneously the brake force and pressure maintaining time that can be calibrated are conducive to host factory realizes the optimization to catapult start function, realizes maximum catapult effect under the premise of guaranteeing power unit, gearbox and other key module service life.
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