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12. 发明授权

US4673222A Tractor air pressure braking system 失效
标题翻译：拖拉机气压制动系统
公开(公告)号：US4673222A
公开(公告)日：1987-06-16
申请号：US824749
申请日：1986-01-31
申请人： David J. Knight
发明人： David J. Knight
IPC分类号： B60T13/26 , B60T13/38 , B60T17/18 , B60T13/00
CPC分类号： B60T13/263
摘要： A fluid pressure braking system for a heavy vehicle is provided with a supply reservoir and a pair of service reservoirs which are charged from the supply reservoir through a corresponding pair of pressure protection valves. The emergency/parking braking system is charged directly from the supply reservoir through a pressure protection valve which is set to open at a pressure level greater than that at which the pressure protection valves protecting the service reservoirs open. Accordingly, it is not possible to release the emergency spring brakes until the service reservoirs are charged to a safe operating level, and it is not possible to bleed down both of the service reservoirs and to thereby effect an emergency brake application due to a single failure in the systems.
摘要翻译：用于重型车辆的流体压力制动系统设置有供应储存器和一对服务储存器，其从供应储存器通过相应的一对压力保护阀充电。紧急/停车制动系统通过压力保护阀直接从供应储存器充电，压力保护阀被设定为比保护服务储存器打开的压力保护阀的压力水平更高的压力水平打开。因此，不可能释放紧急弹簧制动器，直到服务储存器被充电到安全的操作水平，并且不可能使两个服务容器泄放并因此由于单次故障而实现紧急制动应用在系统中。

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