Ejection starting control method and system and automobile

Abstract

The invention relates to a launch control method. The launch control method comprises the following steps: judging whether a driver has a launch intention or not; if the driver has the launch starting intention, whether the launch starting function is activated or not is judged; if the ejection starting function is activated, active torque limiting is conducted on the engine, so that the rotating speed of the engine is changed to be within a first preset rotating speed threshold interval; the clutch is controlled to be combined, so that the clutch is in a sliding friction state; after the rotating speed of the engine is stabilized within the first preset rotating speed threshold value interval, the real-time temperature of a clutch and the state of a brake pedal are detected; if the real-time temperature of the clutch is larger than or equal to the preset temperature threshold value and the driver does not release the brake pedal, passive torque limiting is conducted on the engine based on the received torque limiting request, and the rotating speed of the engine is reduced to be within a second preset rotating speed threshold value interval corresponding to the real-time temperature of the clutch; after the rotating speed of the engine is stabilized in a second preset rotating speed threshold interval, if the brake pedal is released, the vehicle pops up; and if the real-time temperature of the clutch is smaller than the preset temperature threshold value and the driver loosens the brake pedal, the vehicle pops up.

Description

technical field [0001] The invention is used in the field of vehicle engine management systems, and in particular relates to an ejection start control method, system and vehicle. In a driving scenario where a driver needs to start quickly, the engine management system controller improves the vehicle by judging the current engine and vehicle states. Starting speed, and protect the clutch of the dual-clutch transmission from damage, and improve the user's pleasant driving experience through intelligent interactive prompts. Background technique [0002] In the current field of automotive engine control, when the driver starts the vehicle, the engine management system controller controls the vehicle to start according to the actual engine torque, engine speed and accelerator pedal opening. , fast start and other different needs, but the engine management system controller can not identify and handle the driver's different starting needs, and does not do a good job of clutch prot...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a ejection start control method, system and automobile, which are used to solve the problem that the time for the engine speed to stabilize at a calibrated speed is greatly shortened due to the excessive torque value output by the engine management system controller during the ejection start of the vehicle. So that the driver does not have enough time to successfully eject to complete the ejection start problem

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