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    • 5. 发明授权
    • Vehicle brake system
    • 车辆制动系统
    • US4478318A
    • 1984-10-23
    • US378131
    • 1982-05-14
    • Ronald D. Hayden
    • Ronald D. Hayden
    • B60T13/12B60T13/22B60T17/18F16D55/18B60T11/10B60T15/46F15B13/042
    • B60T13/12B60T13/22B60T17/18
    • An improved brake control apparatus for a brake system having redundant brake application fluid circuits 30, 32 and a brake retraction fluid circuit 62. A valve assembly 34, including a slidable two position valve element 60 communicates one brake application fluid circuit 30 with the retraction circuit 62, during normal brake actuation. The valve element 60 is biased towards one position by the combination of pressure in the other brake application circuit 32 and a resilient biasing arrangement 68, and biased towards the second position by pressure in the one application circuit 30. In the event of failure in the other application 32 circuit, the loss of biasing fluid pressure causes the valve element to shift to the second position, interrupting fluid communication from the one application circuit to the retraction circuit and drains fluid pressure in the retraction circuit into the failed circuit. The valve assembly also includes a check valve 62a and flow restriction 62b which cooperate with an accumulator 86 to delay the depressurization of the retraction circuit whenever the brakes are deenergized in order to obtain piston retraction.
    • 一种用于具有冗余制动应用流体回路30,32和制动回缩流体回路62的制动系统的改进的制动控制装置。包括可滑动的两位置阀元件60的阀组件34将一个制动施加流体回路30与回缩回路 62,在正常的制动器致动期间。 阀元件60通过另一个制动施加电路32中的压力和弹性偏置装置68的组合而被偏置到一个位置,并且通过一个施加电路30中的压力朝着第二位置偏压。在一个应用电路30中发生故障的情况下 其他应用32电路,偏压流体压力的损失导致阀元件移动到第二位置,中断从一个施加电路到回缩电路的流体连通,并将回缩电路中的流体压力排入故障电路。 阀组件还包括止回阀62a和流量限制器62b,其与蓄能器86配合,以便每当制动器被断电而延迟回缩回路的减压以便获得活塞收缩。
    • 6. 发明授权
    • Vehicle brake system
    • 车辆制动系统
    • US4431091A
    • 1984-02-14
    • US337699
    • 1982-01-07
    • Harold R. Scibbe
    • Harold R. Scibbe
    • B60T11/30F16D55/00F16D55/40F16D65/14F16D65/853F16D65/78F16D25/06
    • B60T11/30F16D55/40F16D65/853F16D2055/0058F16D2121/02F16D2123/00F16D2125/16
    • An automatic purge valve 110 for removing air and/or vapor from a fluid pressure operated brake system. The valve comprises a chamber 120 disposed in a brake assembly that includes a pair of opposed coaxially aligned valve seats 120b, 134b and a valve member 130 disposed in the chamber and engagable with either of the seats. The seat 134b communicates with a brake coolant system 58; the other valve seat 120b communicates with a piston retraction fluid chamber 90. The valve member is biased towards the one valve seat 120b by pressure in the coolant system and is driven toward the other valve seat 134b during brake actuation by fluid pressure in the piston retraction fluid chamber. Air and/or vapor is discharged from the retraction fluid circuit into the coolant circuit as the valve member travels from the seat 120b to the seat 134b each time the brake assembly is actuated.
    • 用于从流体压力操纵的制动系统中去除空气和/或蒸汽的自动清洗阀110。 阀包括设置在制动组件中的腔室120,其包括一对相对的同轴对准的阀座120b,134b和设置在腔室中并与任一个座接合的阀构件130。 座椅134b与制动冷却剂系统58连通; 另一个阀座120b与活塞回缩流体室90连通。阀构件通过冷却剂系统中的压力被偏压到一个阀座120b,并且在制动器致动期间通过活塞缩回中的流体压力被驱动朝向另一个阀座134b 流体室。 每当制动组件被致动时,阀构件从座椅120b行进到座椅134b,空气和/或蒸汽从回缩流体回路排出到冷却剂回路中。