A hybrid vehicle engine start and shift control strategy is provided. A system and method are disclosed for engine starting and transmission shifting, wherein a controller may be operable to decreasea torque of a motor and operate a starter-generator (ISG) to start an engine responsive to a command to shift the transmission and start the engine. The controller may disengage a second clutch and subsequently shift the transmission to a target gear ratio speed responsive to the torque of the motor achieving zero. The controller may increase respective torques of the motor, ISG, and engine to drive a speed of the motor, ISG, and engine toward a target speed defined by the target gear speed responsive to completion of the shift. The controller may engage the second clutch responsive to the speed of the motor achieving the target speed and engage a disconnect clutch responsive to the respective speeds of the ISG and engine achieving the target speed.

    本公开提供了“混合动力车辆发动机起动和换挡控制策略”。公开了一种用于发动机起动和变速器换挡的系统和方法,其中控制器可以操作以响应于使变速器换挡并起动发动机的命令而减小马达的扭矩并操作起动机‑发电机(ISG)以起动发动机。控制器可以响应于马达的扭矩达到零而脱离第二离合器并且随后将变速器换挡到目标齿轮比速度。控制器可以响应于换挡完成而增加马达、ISG和发动机的相应扭矩以将马达、ISG和发动机的速度朝向由目标齿轮比速度定义的目标速度驱动。控制器可以响应于马达的速度达到目标速度而接合第二离合器,并且响应于ISG和发动机的相应速度达到目标速度而接合分离离合器。


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    Title :

    Hybrid vehicle engine start and shift control strategy


    Additional title:

    混合动力车辆发动机起动和换挡控制策略


    Contributors:
    MEYER JASON (author) / PALEJIYA DUSHYANT (author) / JOHRI RAJIT (author) / YAO YIXIN (author)

    Publication date :

    2020-12-01


    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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