| 摘要 |
A compressed air distributing apparatus for compressed air systems of motor vehicles includes a multi circuit protection valve (9) for supplying a plurality of circuits (I, II, III, IV, V) with compressed air. The multi circuit protection valve (9) includes a first solenoid valve (36) and a second solenoid valve (37). Each of the solenoid valves (36, 37) includes a deaerating connection leading to the atmosphere. A plurality of overflow valves (18) includes a valve body (20), a flow chamber (23), a rear chamber (34), a first effective surface (22), a second effective surface (27) and a spring (31) being located in the rear chamber (34). The valve body (20) separates the flow chamber (23) from the rear chamber (34). Each of the overflow valves (18) is associated with one of the circuits (I, II, III, IV, or V), and its opening pressure is greater than its closing pressure to allow for limited backflow. At least one of the overflow valves (18) includes a third effective surface (33) and a fourth effective surface (35). The third effective surface (33) is controlled by the first solenoid valve (36). The fourth effective surface (35) is controlled by the second solenoid valve (37). The first solenoid valve (36) opens the overflow valve (18). The second solenoid valve (37) closes the overflow valve (18).
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