The invention discloses an engine start-stop control method and system for a power split type hybrid transmission, and belongs to the technical field of power split type hybrid electric vehicles. The method is used for restraining impact caused by the start-stop process of the power split type hybrid power engine. The control system comprises a vehicle control unit HTCU, the engine control unit ECU is responsible for collecting a high-precision crankshaft position signal and a camshaft position signal and sending the signals to the generator controller MCU2 for shutdown angle control; the generator control unit MCU2 is responsible for dragging an engine to start and reversely dragging the engine to a specified crank angle through torque control; and the driving motor control unit MCU1 is responsible for responding to the vehicle control unit HTCU to perform torque preloading when the engine is started. The control system integrates the functions of driving motor torque advanced loading and engine stop angle control, and the impact feeling caused by the engine start and stop process is solved through the special control mode, so that the vehicle NVH is optimized, and the driving comfort and smoothness are improved.

    功率分流式混动专用变速器的发动机启停控制方法及系统,属于功率分流式混合动力汽车技术领域。用于抑制功率分流式混合动力发动机启停过程带来的冲击。该控制系统,包括整车控制单元HTCU;发动机控制单元ECU,负责采集高精度曲轴位置信号和凸轮轴位置信号,并发送给发电机控制器MCU2用于停机角度控制;发电机控制单元MCU2,负责拖动发动机启动,通过扭矩控制将发动机倒拖到指定曲轴转角;驱动电机控制单元MCU1,在启动发动机时,负责响应整车控制单元HTCU进行扭矩预加载。本发明的控制系统集成驱动电机扭矩提前加载和发动机停机角度控制的功能,通过此种特殊的控制方式解决发动机启停过程带来的冲击感,从而优化车辆NVH,提高驾驶舒适性平顺性。


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    Title :

    Engine start-stop control method and system for power split type hybrid transmission


    Additional title:

    功率分流式混动专用变速器的发动机启停控制方法及系统


    Contributors:
    WANG QI (author) / XIN HAIXIA (author) / WANG JIANXUN (author) / HAO MEIGANG (author) / GUO FENGNAN (author) / JIA LINNA (author) / QU NING (author) / FANG LIHUI (author) / GAO YAN (author) / ZHANG CHANGLONG (author)

    Publication date :

    2022-07-01


    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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