The invention provides a control method and device for the rotating speed of an engine in a hybrid electric vehicle. The control method comprises the steps that the current target required power and the current power change trend of an engine-generator set are obtained in real time; determining whether the target required power is located in a power hysteresis region or not; if yes, determining a target load area corresponding to the engine-generator set according to the target demand power and the power change trend; according to the target load area and a predetermined load area-rotating speed corresponding relation, the target rotating speed of an engine in the engine-generator set is determined; wherein the load area-rotating speed corresponding relation is determined according to comprehensive universal characteristic data of the engine-generator set; and controlling the engine to work according to the target speed. The engine-generator set is researched as a whole, and the corresponding rotating speed is set according to the power range, so that multi-point control of the rotating speed of the engine is realized, the efficiency of the whole vehicle can be improved, and the fuel loss of the whole vehicle can be effectively reduced.

    本申请提供了一种混合动力汽车中发动机转速的控制方法及装置,包括:实时获取发动机‑发电机组的当前目标需求功率以及当前功率变化趋势;确定目标需求功率是否位于功率滞环区域中;若为是,根据目标需求功率和功率变化趋势,确定发动机‑发电机组所对应的目标负荷区;根据目标负荷区和预先确定的负荷区‑转速对应关系,确定发动机‑发电机组中发动机的目标转速;其中,负荷区‑转速对应关系根据发动机‑发电机组的综合万有特性数据确定;按目标转速控制发动机工作。本申请通过将发动机‑发电机组作为一个整体进行研究,根据功率范围设置对应的转速,从而实现发动机转速的多点控制,进而可提高整车效率以及有效降低整车的燃油损耗。


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    Titel :

    Method and device for controlling rotating speed of engine in hybrid electric vehicle


    Weitere Titelangaben:

    一种混合动力汽车中发动机转速的控制方法及装置


    Beteiligte:
    WANG XIUYUAN (Autor:in) / WANG MING (Autor:in) / HU JINGBO (Autor:in) / ZHANG ZHANJIANG (Autor:in)

    Erscheinungsdatum :

    2024-04-26


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    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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