A valve unit (10) for an anti-lock brake system (ABS) comprises a valve body (11), a piston (18) movable in the valve body and an elastic element (34) acting on the piston. The valve body has an outlet port (14), an inlet port (17), a main chamber (15) in communication with the outlet port, an expansion chamber (16) having an outflow passage (51) enabling fluid communication between the main chamber and the expansion chamber, and a bypass passage (50) between the inlet port and the outlet port. A piston (18) is movable in the main chamber (15) and has a longitudinally through cavity (31). The piston has a first lateral surface facing away from the outlet port and a second lateral surface opposite the first lateral surface and facing away from the outlet port, wherein an area of the first lateral surface is smaller than an area of the second lateral surface. A resilient element (34) exerts a resilient force to move the piston (18) away from the outlet port (14). The valve unit (10) is actuatable by the pressure of the brake fluid in the main chamber (15).

    一种用于防抱死制动系统(ABS)的阀单元(10),其包括阀体(11)、可在阀体中移动的活塞(18)和作用在活塞上的弹性元件(34)。阀体具有出口端口(14)、入口端口(17)、与出口端口连通的主腔室(15)、具有实现在主腔室和膨胀腔室之间的流体连通的流出通道(51)的膨胀腔室(16)、以及在入口端口和出口端口之间的旁路通道(50)。活塞(18)可在主腔室(15)中移动并且具有纵向贯通腔体(31)。活塞具有背离出口端口的第一横向表面和与第一横向表面相对并且背离出口端口的第二横向表面,其中第一横向表面的面积小于第二横向表面的面积。弹性元件(34)施加弹性力以将活塞(18)远离出口端口(14)移动。阀单元(10)可由主腔室(15)中的制动流体的压力启动。


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    Title :

    Valve unit for anti-lock brake system


    Additional title:

    用于防抱死制动系统的阀单元


    Contributors:

    Publication date :

    2023-08-29


    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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