The invention relates to the technical field of hydraulic braking, and discloses a failure auxiliary braking device, a hydraulic braking system and a vehicle. The failure auxiliary braking device comprises a braking main cylinder and a hydraulic energy accumulator, the braking main cylinder comprises a main cylinder body and a piston, a cylinder cavity is formed in the main cylinder body, the piston can be arranged in the cylinder cavity in a sealed and sliding mode to divide the cylinder cavity into a main cylinder front cavity and a main cylinder rear cavity, and the main cylinder rear cavity is provided with an oil inlet and an oil outlet; the main cylinder front chamber is provided with a liquid supplementing port and a pressurizing oil port; the hydraulic energy accumulator is connected with the pressurizing oil port through the main cylinder pressurizing control valve; the piston can seal the pressurizing oil port in a non-braking state; the piston can move towards the rear cavity of the main cylinder to open the pressurizing oil port when bearing driving force from the brake pedal, and when the main cylinder pressurizing control valve is opened, the hydraulic energy accumulator can supply pressurizing hydraulic oil to the front cavity of the main cylinder. According to the failure auxiliary braking device, power-assisted braking can be provided during braking, mistaken braking can be avoided when braking is not conducted, and the safety performance is improved.

    本发明涉及液压制动技术领域,公开一种失效辅助制动装置、液压制动系统和车辆。失效辅助制动装置包括制动主缸和液压蓄能器,制动主缸包括主缸体和活塞,主缸体内形成有缸腔,活塞能够密封滑动地设置在缸腔内将缸腔分隔为主缸前腔室和主缸后腔室,主缸后腔室具有进油口和出油口,主缸前腔室具有补液口和增压油口;液压蓄能器通过主缸增压控制阀与增压油口连接;活塞在未制动状态时能够封闭增压油口;活塞受到来自制动踏板的驱动力时能够朝向主缸后腔室移动以打开增压油口,主缸增压控制阀开启时,液压蓄能器能够向主缸前腔室供给增压液压油。该失效辅助制动装置能够在制动时提供助力制动,并在未制动时能够避免误制动,提升安全性能。


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    Title :

    Failure auxiliary braking device, hydraulic braking system and vehicle


    Additional title:

    失效辅助制动装置、液压制动系统和车辆


    Contributors:
    CHENG JIA (author) / 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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