The invention discloses a hydraulic power braking system and a braking method.The hydraulic power braking system comprises a liquid storage tank, a pedal simulator and two hydraulic braking assemblies, each hydraulic braking assembly is provided with two brakes, and each hydraulic braking assembly is correspondingly connected with an independent hydraulic control unit; each hydraulic control unit comprises a shuttle valve and a brake master cylinder used for generating brake pressure oil, the shuttle valve is provided with a first inlet, a second inlet and an outlet, the first inlet is connected with an output port of the brake master cylinder through a first normally-closed on-off control valve, and the second inlet is connected with a second inlet of the shuttle valve in the other hydraulic control unit. The outlet is connected with the two brakes of the corresponding hydraulic brake assembly and further communicates with the second inlet through a first pipeline, and a second normally-closed on-off control valve is arranged on the first pipeline. According to the braking method, the hydraulic power braking system is adopted for conducting at least one of conventional braking control, conventional ABS control, single brake control, single hydraulic control unit power-off control, single hydraulic control unit power-off ABS control and two hydraulic control unit power-off control. The invention has the advantages of capability of meeting the requirement of nonlinear distribution of braking force of front and rear shafts, stable and reliable braking, simple structure, low cost, simplicity and convenience in control and the like.

    本发明公开了一种液压动力制动系统及其制动方法,液压动力制动系统包括储液罐、踏板模拟器和两组液压制动组件,各组液压制动组件具有两个制动器,各组液压制动组件分别对应连接有一个独立的液控单元,液控单元包括梭阀和用于产生制动压力油的制动主缸,梭阀具有第一进口、第二进口和出口,第一进口通过第一常闭通断控制阀与制动主缸的输出口相连,第二进口与另一个液控单元中梭阀的第二进口相连,出口与对应液压制动组件的两个制动器相连,出口还通过第一管路与第二进口连通,第一管路上设有第二常闭通断控制阀。制动方法是采用该液压动力制动系统进行常规制动控制、常规ABS控制、单制动器控制、单个液控单元失电控制、单个液控单元失电ABS控制和两个液控单元失电控制中的至少一种进行控制。本发明具有能够满足前后轴制动力非线性分配的需求、制动稳定可靠、结构简单、成本低、控制简便等优点。


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    Title :

    Hydraulic power braking system and braking method thereof


    Additional title:

    一种液压动力制动系统及其制动方法


    Contributors:
    BAO CHENG'AN (author) / LI REN (author) / HE DONG (author)

    Publication date :

    2023-05-12


    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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