The invention relates to a vacuum leakage diagnosis method and a vehicle. Therefore, whether vacuum leakage occurs or not can be detected when a brake vacuum booster is in a working state or a non-working state. The method comprises the steps that first air pressure in a front cavity of the brake vacuum booster and first volume of the front cavity are obtained; when the numerical value relation between the product of the first air pressure and the first volume and the product of the second air pressure and the second volume of the front cavity meets the preset numerical value relation, it is determined that vacuum leakage occurs in the front cavity, and the second air pressure and the second volume are determined under the condition that the opening degree of a brake pedal is zero.

    本公开涉及一种真空泄漏诊断方法,车辆。以实现在制动真空助力器处于工作状态下或者处于非工作状态下时,都能检测其是否发生真空泄漏。该方法包括:获取所述制动真空助力器的前腔室内的第一气压以及所述前腔室的第一容积;在所述第一气压与所述第一容积的乘积和所述前腔室的第二气压与第二容积的乘积之间的数值关系满足预设数值关系时,确定所述前腔室发生真空泄漏,所述第二气压和所述第二容积是在制动踏板的开度为零的情况下确定的。


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    Title :

    Vacuum leakage diagnosis method and vehicle


    Additional title:

    真空泄漏诊断方法,车辆


    Contributors:
    GE QIANG (author)

    Publication date :

    2021-06-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF




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