The invention relates to an engine starting control method for a parallel P2 hybrid configuration, which comprises the following steps of: firstly, obtaining an engine ignition target rotating speed, clutch slip friction pressure and a motor target driving torque according to driving working condition information; the method comprises the following steps: firstly, controlling a clutch and engine slip friction according to clutch slip friction pressure to drag an engine to an engine ignition target rotating speed, judging whether a lock-up clutch is unlocked or not according to driving working condition information, controlling the clutch to be disconnected from the engine under the lock-up condition of the lock-up clutch, and finally starting the engine and adjusting the rotating speed of the engine. And completely connecting the clutch and the engine until the rotating speed of the engine reaches a preset condition. Compared with the prior art, when the lock-up clutch is closed, the clutch is disconnected in the starting process, so that the engine starting impact cannot be transmitted to a transmission system through the clutch, the impact on the transmission system in the engine starting process can be remarkably reduced, and the driving smoothness is improved.

    本发明涉及一种用于并联式P2混动构型的发动机启动控制方法,首先根据行车工况信息,得到发动机点火目标转速、离合器滑磨压力和电机目标驱动扭矩,然后根据离合器滑磨压力控制离合器与发动机滑磨将发动机拖起至发动机点火目标转速,再根据行车工况信息判断锁止离合器是否解锁,在锁止离合器闭锁情况下控制离合器与发动机断开连接,最后启动发动机并调节发动机的转速,直至发动机转速达到预设条件,完全连接离合器和发动机。相比于现有技术,本发明在锁止离合器闭合时,启动过程中断开离合器,使得发动机启动冲击不会通过离合器传递到传动系统中,可显著降低发动机启动过程中对传动系统冲击,提高驾驶平顺性。


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    Title :

    Engine starting control method for parallel P2 hybrid configuration


    Additional title:

    一种用于并联式P2混动构型的发动机启动控制方法


    Contributors:
    ZENG FANMING (author) / HUANG ZUSHENG (author) / FU CHANG (author) / XIANG XIAOLONG (author) / SHEN YANG (author)

    Publication date :

    2023-11-10


    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 / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen



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