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    Double-piston master cylinder with central booster-driven piston driving surrounding low pressure piston
    1.
    发明授权
    Double-piston master cylinder with central booster-driven piston driving surrounding low pressure piston 失效
    双活塞主缸，中央增压驱动活塞驱动，围绕低压活塞

    公开(公告)号：US4703623A

    公开(公告)日：1987-11-03

    申请号：US786916

    申请日：1985-10-11

    申请人： Georges Dalibout ,  Michel Grenier ,  Daniel Cieplinski

    发明人： Georges Dalibout ,  Michel Grenier ,  Daniel Cieplinski

    IPC分类号： B60T11/224 ,  B60T13/44 ,  F04B9/127 ,  B60T11/08 ,  F15B7/04

    CPC分类号： B60T11/224 ,  B60T13/44 ,  F04B9/127

    摘要： A dual-piston hydraulic brake master cylinder includes a large hydraulic piston which supplies an initial large brake fluid volume and a small hydraulic piston which continues to supply brake fluid to the brakes when the large piston stops moving forward in its cylinder at higher brake pressures. The small, central hydraulic piston is connected to the end of a piston rod extension of a pneumatic booster piston. The large piston surrounds the small piston and opens a reservoir line tilt-valve in the piston retracted position. A passageway between the large and small hydraulic chambers is open in the retracted position to allow communication of braking fluid therebetween. During brake actuation a seal arrangement interrupts this communication. The large and small hydraulic chambers supply the brake circuits through delivery passages.

    摘要翻译： 双活塞液压制动主缸包括大型液压活塞，其提供初始大的制动液体积和小型液压活塞，当大活塞在较高的制动压力下停止在其气缸中向前移动时，继续向制动器供应制动液。 小型中央液压活塞连接到气动助力器活塞的活塞杆延伸部分的末端。 大活塞围绕小活塞并在活塞缩回位置打开储液管线倾斜阀。 大液压室和小液压室之间的通道在缩回位置打开，以允许制动流体在其间连通。 在制动器致动期间，密封装置中断该通信。 大型和小型液压室通过输送通道供应制动回路。