Control techniques for an electrically all-wheel drive (eAWD) hybrid vehicle involve determining whether to transition from an electric-only mode to a parallel mode based on a driver torque request or a state of charge (SOC) of a battery system. During the electric-only mode, the electric motor is operated such that a torque reserve is maintained. When the driver torque request exceeds a maximum drive torque that the electric motor is capable of generating, the electric-only to parallel mode transition is performed. This involves the electric motor depleting the torque reserve to provide an expected acceleration feel for the driver while engine and transmission speeds are synchronized. When the SOC of the battery system falls below an SOC threshold, the drive torque of the electric motor is decreased to zero upon engine/transmission speed synchronization such that the battery system can be recharged.


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    Title :

    MODE TRANSITION CONTROL TECHNIQUES FOR AN ELECTRICALLY ALL-WHEEL DRIVE HYBRID VEHICLE


    Additional title:

    VERFAHREN ZUR STEUERUNG DES MODUSÜBERGANGS EINES HYBRIDFAHRZEUGS MIT ELEKTRISCHEM ALLRADANTRIEB
    TECHNIQUES DE COMMANDE DE TRANSITION DE MODE POUR UN VÉHICULE HYBRIDE À TRANSMISSION INTÉGRALE ÉLECTRIQUE


    Contributors:
    ZHOU YUXING (author)

    Publication date :

    2023-10-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    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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