The invention relates to a control method and a control system for hill starting of an automobile, and the control method comprises the following steps: when a starting intention exists, obtaining a current load demand torque value C; calculating a power torque value E of the engine when the load torque percentage of the engine is at a first set value D according to the current load demand torque value C; and controlling the engine to output the power torque value E to assist in starting. According to the embodiment of the invention, the operation of releasing the hand brake is changed into the operation of releasing the brake pedal, the power torque value E of the engine is calculated directly through related controllers such as a whole vehicle controller or a vehicle body controller and then the engine is requested to complete the operation of the accelerator, and then auxiliary starting can be completed. The controller controls the starting of the vehicle according to the operation of a driver, the starting is more stable, the situations of flameout, vehicle sliding and violent starting are avoided, and the operations such as starting interruption and re-starting in the starting process are easier and faster.

    本申请涉及一种汽车坡道起步的控制方法及控制系统,该控制方法包括如下步骤:当存在起步意图时,获取当前负载需求扭矩值C;根据当前负载需求扭矩值C,计算出当发动机的负载扭矩百分比处于第一设定值D时,发动机的动力扭矩值E;控制发动机输出所述动力扭矩值E,以辅助起步。本申请实施例将松手刹的操作改为松刹车踏板,而加油门的操作直接通过相关控制器比如整车控制器或车身控制器等计算出发动机的动力扭矩值E后请求发动机完成,即可完成辅助起步。控制器根据司机操作控制车辆起步,起步更平稳,不会出现熄火、溜车、猛起步的情况,在起步过程中中断起步、重起步等操作也更容易更快捷。


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    Title :

    Control method and control system for hill starting of automobile


    Additional title:

    一种汽车坡道起步的控制方法及控制系统


    Contributors:
    WU XINGQIANG (author) / WANG YANAN (author) / TANG LI (author) / REN JUNFENG (author) / ZHU XIAOKUI (author)

    Publication date :

    2021-09-03


    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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