The invention relates to the technical field of automobiles, in particular to a switching method for switching low-speed four-wheel drive modes of a transfer case. According to the method, the NPN switching mode or the PNP switching mode is adopted in the switching process, when the method is used for testing the gear shifting process of a real vehicle, shaking of the whole vehicle completely disappears, abnormal sound is obviously improved, the fault of 4L mode switching failure is thoroughly eliminated, meanwhile, the 4L switching performance is not affected by the size of the N-gear dragging torque, and the performance of vehicles is consistent.

    本发明涉及及汽车技术领域,具体涉及一种分动器切换低速四驱模式的切换方法。本发明在切换过程中采用NPN切换模式或PNP切换模式,应用该方法实车测试换档过程整车抖动完全消失,异响改善明显,也彻底消除了4L模式切换失败的故障,同时使得4L切换表现不受N档拖曳扭矩大小影响,且车辆之间表现具有一致性。


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    Title :

    Switching method for switching low-speed four-wheel drive mode of transfer case


    Additional title:

    一种分动器切换低速四驱模式的切换方法


    Contributors:
    LIAO SHANBIN (author) / HUANG GAORONG (author) / NIE XIAOLONG (author) / CUI YEJIE (author) / FANG QIANG (author) / ZHU SIMIN (author) / WANG MAOGEN (author) / LIU QINGGANG (author)

    Publication date :

    2023-07-04


    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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