The invention relates to the technical field of hybrid electric vehicles, and discloses a hybrid electric vehicle engine shutdown control method and system, a vehicle and a device.According to the method, the rotating speed of an engine is monitored, and after the rotating speed of the engine is smaller than a first rotating speed threshold value, a second shutdown torque value is executed to reduce the rotating speed of the engine; and acquiring engine rotating speeds and position angles corresponding to different times, determining the position angle corresponding to the minimum reverse towing torque as a stop position angle of the engine, and controlling the engine to stop based on the stop position of the engine after the rotating speed of the engine is smaller than a second rotating speed threshold value. It can be guaranteed that the engine stops at the stop position corresponding to the minimum reverse towing torque, and the starting and stopping comfort of the engine is improved.

    本发明涉及混合动力汽车技术领域,公开了一种混动车辆发动机停机控制方法、系统、车辆及装置,本发明通过监测发动机的转速,在发动机转速小于第一转速阈值后,执行第二停机扭矩值降低发动机的转速,并获取不同时间对应的发动机转速和位置角,并确定最小倒拖扭矩对应的位置角作为发动机的停机位置角,在发动机的转速小于第二转速阈值后,基于发动机的停机位置控制发动机停机,可保证发动机停止在最小倒拖扭矩对应的停止位置处,提高了发动机启停的舒适性。


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    Title :

    Hybrid vehicle engine shutdown control method, system, vehicle and device


    Additional title:

    一种混动车辆发动机停机控制方法、系统、车辆及装置


    Contributors:
    WANG HAI (author) / WANG LI (author) / YANG XIAOBO (author)

    Publication date :

    2024-02-27


    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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