The invention discloses a vacuum boosting system of a pure electric vehicle. The vacuum boosting system is provided with a vacuum tank and a pressure sensor, the vacuum tank is respectively connected with the vacuum booster and the electronic vacuum pump through pipelines; the pressure sensor is arranged on a pipeline for connecting the vacuum tank and the electronic vacuum pump; and the controller is respectively connected with the electronic vacuum pump and the pressure sensor through signal circuits. The invention further discloses a fault judgment and control method for the electronic vacuum pump of the vacuum boosting system. By the adoption of the technical scheme, the air leakage diagnosis strategy for the vehicle and the control strategy for the electronic vacuum pump after air leakage occur are improved, and it is guaranteed that under the condition that air leakage occurs in the electronic vacuum pump, the enough vacuum degree is achieved to guarantee driving safety; the braking requirement of a driver is met to the maximum extent, and the braking safety and the driving comfort of the driver are greatly improved; and meanwhile, the service life of the electronic vacuum pump is effectively prolonged.

    本发明公开了一种纯电动汽车真空助力系统,设置真空罐、压力传感器;真空罐通过管路分别与真空助力器、电子真空泵连接;压力传感器设置在真空罐与电子真空泵连接的管路上;控制器分别通过信号电路与电子真空泵和压力传感器连接。本发明还公开了该真空助力系统的电子真空泵故障判断与控制方法。采用上述技术方案,完善对车辆进行漏气诊断策略,以及在出现漏气后对电子真空泵的控制策略,保证在电子真空泵漏气的情况下有足够的真空度来保证驾驶安全;最大程度上满足驾驶员的制动需求,大大提升了制动安全性和驾驶员的驾驶舒适性;同时,有效地延长电子真空泵的使用寿命。


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    Titel :

    Vacuum boosting system of pure electric vehicle and fault judgment and control method of electronic vacuum pump


    Weitere Titelangaben:

    纯电动汽车真空助力系统及电子真空泵故障判断与控制方法


    Beteiligte:
    WANG LONG (Autor:in) / GUO JUN (Autor:in) / LIU HONGMIN (Autor:in) / WEN JIAYI (Autor:in)

    Erscheinungsdatum :

    13.05.2025


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

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



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