The invention discloses an engine stop control method and device for an extended-range hybrid vehicle, and the method comprises the steps: when the vehicle meets an engine stop working condition, requesting an engine to execute the zero clearing of torque after determining that an engine stop flag bit is set for a preset time, and requesting the rotating speed of a generator to be reduced to an idling rotating speed at the same time; issuing an engine stop instruction, controlling the torque of the generator according to the rotating speed of the generator to reduce the rotating speed of the generator to zero, and stopping the engine when the engine sends out the identification information of the stop state and the rotating speed of the generator is reduced to zero. The problem that in the prior art, when the engine of the extended-range hybrid vehicle is shut down, abnormal shaking is likely to be caused is solved.

    本发明公开了一种增程式混动车辆的发动机停机控制方法及装置,该方法包括:当车辆满足发动机停机工况时,并在确定发动机停机标志位在置位预设时间后请求发动机执行扭矩的清零,同时请求发电机的转速下降至怠速转速;下发发动机停机指令,根据发电机的转速控制发电机的扭矩将发电机的转速降低至零,待发动机发出停机状态的标识信息且发电机转速降低至零以完成发动机的停机。本发明解决了现有技术中在进行增程式混动车辆发动机停机时容易造成异常抖动的问题。


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    Title :

    Engine shutdown control method and device for extended-range hybrid vehicle


    Additional title:

    一种增程式混动车辆的发动机停机控制方法及装置


    Contributors:
    TU PENGFEI (author) / KANG WENHUI (author) / HUANG XIAOFANG (author) / HU XIANZHI (author) / YE BINGFEI (author) / YAN MENG (author)

    Publication date :

    2024-12-27


    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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