The invention relates to the technical field of hydraulic braking, and discloses a hydraulic braking unit, a hydraulic braking system and a vehicle. The hydraulic brake unit includes: a backup brake master cylinder including a cylinder piston and a pressure chamber whose volume is reduced by movement of the cylinder piston; one end of the brake oil way is communicated with the pressure cavity, and the other end of the brake oil way is communicated with a brake wheel cylinder; the brake oil way is connected with a standby mode switching valve; the brake pump comprises a brake piston which is driven by the motor to move and a pressure chamber of which the volume is reduced by the movement of the brake piston, and the pressure chamber is communicated with the other end of the brake oil path through the brake switching valve; the standby mode switching valve is opened, and the brake switching valve is closed, so that the hydraulic brake unit is used for being in a mechanical standby brake working mode. According to the hydraulic brake unit, the loss of the amount of liquid flowing out of the standby brake master cylinder can be avoided, the brake performance in a mechanical standby brake working mode can be brought into full play, the brake strength in the mechanical standby brake working mode is improved, and the brake distance is effectively reduced.

    本发明涉及液压制动技术领域,公开一种液压制动单元、液压制动系统和车辆。液压制动单元包括:备用制动主缸包括缸活塞和通过缸活塞的移动减小容积的压力腔;制动油路的一端与压力腔连通另一端用于与制动轮缸连通,制动油路上连接有备用模式切换阀;制动泵包括用于通过电机的驱动来移动的制动活塞和通过制动活塞的移动减小容积的压力室,压力室通过制动切换阀与制动油路的另一端连通;备用模式切换阀打开制动切换阀关闭以使得液压制动单元用于处在机械备用制动工作模式。该液压制动单元能够避免造成从备用制动主缸流出液量的损失,有利于充分发挥机械备用制动工作模式下的制动性能,提高机械备用制动工作模式下的制动强度,有效减小制动距离。


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    Title :

    Hydraulic braking unit, hydraulic braking system and vehicle


    Additional title:

    液压制动单元、液压制动系统和车辆


    Contributors:
    ZHU XIAOJUN (author) / GUO HAI (author)

    Publication date :

    2021-09-28


    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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