The invention provides a torque control method and system for a vehicle engine, and the method comprises the steps: obtaining the position of an accelerator pedal of a vehicle, controlling a clutch to be started at a preset first speed when the accelerator pedal of the vehicle is released, and controlling the torque of the engine to be reduced to a first torque threshold value. And moreover, the real-time rotating speed of the engine is continuously detected and obtained, and when the real-time rotating speed of the engine is reduced to a preset first rotating speed threshold value, the torque of the engine is controlled to rise according to the real-time rotating speed of the engine. In the torque rising process of the engine, the real-time pressure of the clutch is continuously detected and obtained, and the difference value between the real-time pressure of the clutch and the target pressure of the clutch is obtained through comparison; and when the difference value is smaller than the preset pressure threshold value, the torque of the engine is controlled to be reduced to a preset second torque threshold value at a preset second speed. Therefore, by controlling the torque of the engine, the deceleration cannot be suddenly reduced after the accelerator is loosened, the deceleration is smoother, and the driving feeling is improved.

    本发明提供一种车辆发动机的扭矩控制方法及系统,其中,方法包括:获取车辆的油门踏板位置,当车辆的油门踏板松开时,控制离合器以预设的第一速率开启,并且控制发动机的扭矩下降至第一扭矩阈值。并且,持续检测并获取发动机的实时转速,在发动机的实时转速下降至预设的第一转速阈值时,根据发动机的实时转速控制发动机的扭矩上升。在发动机的扭矩上升过程中,持续检测并获取离合器的实时压力,并且比较获得离合器的实时压力与离合器的目标压力的差值;当差值小于预设的压力阈值时,控制发动机的扭矩以预设的第二速率下降至预设的第二扭矩阈值。由此,通过对发动机的扭矩进行控制,使得在松油门后减速度不会突然降低,减速更加平缓,提升驾驶感。


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    Title :

    Torque control method and system of vehicle engine


    Additional title:

    车辆发动机的扭矩控制方法及系统


    Contributors:
    WANG CHANG (author) / WANG SHUAISHUAI (author) / YU LUYI (author) / HE JUN (author)

    Publication date :

    2023-01-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion



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