The invention relates to a method and a system for acquiring a target gear of a hybrid electric vehicle. The method comprises the following steps of: judging whether gear correction is needed or not; if correction is needed, the target gear is determined in the following mode that the corresponding upshift gear is obtained through the current vehicle speed on the basis of the upshift atlas; based on the downshift atlas, a corresponding downshift gear is obtained through the current vehicle speed; the current gear is compared with the upshift gear, the larger value is set as the middle gear, then the middle gear is compared with the downshift gear, and the smaller value is set as the target gear; and if correction is not needed, the target gear is determined in the following mode that the target gear is obtained based on a preset basic gear shifting map according to the current accelerator and the current vehicle speed. According to the method, after the engine stops, the gear of the motor is corrected, the operation efficiency of the motor when the P2 configuration hybrid electric vehicle is driven in the hybrid mode is improved, and then the economical efficiency of the whole vehicle is improved.

    本发明涉及一种混合动力汽车目标档位获取方法及系统,所述方法为:判断是否需要进行档位修正;若需要修正,则采用下述方式确定目标档位:基于升档图谱,通过当前车速获取所对应的升档档位;基于降档图谱,通过当前车速获取所对应的降档档位;当前档位与升档档位对比,令较大值为中间档位,然后令中间档位与降档档位对比,令较小值为目标档位;若不需要修正,则采用下述方式确定目标档位:则根据当前的油门和车速,基于预设的基础换挡图谱获得目标档位。本发明在发动机停机后,对电机的档位进行修正,提高了P2构型混合动力汽车在混合模式驱动时电机运行效率,进而提高整车经济性。


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    Title :

    Method and system for acquiring target gear of hybrid electric vehicle


    Additional title:

    一种混合动力汽车目标档位获取方法及系统


    Contributors:
    GAO BAIJUN (author) / HUANG HUI (author) / LIU XIAOLONG (author)

    Publication date :

    2023-05-16


    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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