The invention provides an emergency power-assisted steering system and an emergency power-assisted steering method. The emergency power-assisted steering system comprises a first steering oil way that comprises a first oil pump for supplying pressure to a steering engine; a second steering oil way which comprises a second oil pump and is used for supplying pressure to the steering engine when the first steering oil way breaks down; an oil way change-over valve which is connected with the first steering oil way and the second steering oil way, and the oil way change-over valve is used for cutting off the pressure supply of the first steering oil way to the steering machine when the oil pressure of the first steering oil way is smaller than the pre-oil pressure of the second steering oil way and communicating the second steering oil way with the steering machine; and a controller which is connected with the oil way conversion valve and used for controlling the second oil pump to pressurize the second steering oil way when the second steering oil way is communicated with the steering machine, and emergency power-assisted steering is carried out by utilizing the original steering machine without depending on a power takeoff.

    本申请提供一种应急助力转向系统和应急助力转向方法,该应急助力转向系统,包括第一转向油路,其包括第一油泵,其用于为转向机供压;第二转向油路,其包括第二油泵,其用于所述第一转向油路故障时,为所述转向机供压;油路转换阀,其与所述第一转向油路和所述第二转向油路均相连,且所述油路转换阀用于在所述第一转向油路的油压小于所述第二转向油路的预油压时切断所述第一转向油路对所述转向机的供压,并连通第二转向油路与转向机;控制器,其与所述油路转换阀相连,所述控制器用于在所述第二转向油路与转向机连通时控制第二油泵为所述第二转向油路增压,实现不依赖取力器,利用原有的转向机进行应急助力转向。


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    Title :

    Emergency power-assisted steering system and method


    Additional title:

    一种应急助力转向系统和方法


    Contributors:
    SUN HUAQI (author) / WANG HUI (author) / ZHANG YUN (author) / XING JUXUE (author) / LI HONG (author) / XIN ZITIAN (author)

    Publication date :

    2022-01-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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