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    • 3. 发明授权
    • Hydraulic pressure control device for use in vehicle anti-skid braking
system
    • 用于车辆防滑制动系统的液压控制装置
    • US4636009A
    • 1987-01-13
    • US714804
    • 1985-03-22
    • Naohiko TsuruRyoichi MatsuuraHiromi OtsukiHiroshi FujinamiShinichi HoriYoshihisa NomuraHiroyuki Oka
    • Naohiko TsuruRyoichi MatsuuraHiromi OtsukiHiroshi FujinamiShinichi HoriYoshihisa NomuraHiroyuki Oka
    • B60T8/48B60T8/1761B60T8/46B60T8/50B60T8/02
    • B60T8/5012B60T8/5037
    • A hydraulic pressure control device in a vehicle anti-skid braking system includes a wheel brake actuating cylinder for braking a vehicle wheel, a fluid pressure supply passage connected between a master cylinder and the wheel brake actuating cylinder and having a restriction, and a first directional control valve disposed in the fluid pressure supply passage and having at least pressure-increasing and pressure-decreasing modes, the first directional control valve being normally in the pressure-increasing mode to connect the master cylinder to the fluid pressure supply passage. A second directional control valve is connected between the master cylinder and the wheel brake actuating cylinder, the second directional control valve being normally open to provide a bypass passage across the first directional control valve to connect the master cylinder passage to the wheel brake actuating cylinder. A control unit is responsive to a decelerating condition of the vehicle wheel for actuating the first directional control valve into the pressure-decreasing mode and for actuating the second directional control valve to shut off the bypass passage.
    • 车辆防滑制动系统中的液压控制装置包括用于制动车轮的车轮制动致动缸,连接在主缸和车轮制动器致动缸之间并具有限制的流体压力供给通道,并且具有第一定向 控制阀设置在流体压力供给通道中并具有至少增压和减压模式,第一方向控制阀通常处于将主缸连接到流体压力供给通道的增压模式。 第二方向控制阀连接在主缸和车轮制动器致动缸之间,第二方向控制阀通常打开以提供跨过第一方向控制阀的旁通通道,以将主缸通道连接到车轮制动器致动缸。 控制单元响应于车轮的减速状态,用于致动第一方向控制阀进入减压模式,并且用于致动第二方向控制阀以切断旁路通道。