When vehicles are in idle load, the electromagnetic valve is in work and the relayvalve of the invention works as the ordinary relayvalve.
当车辆空载时， 电磁阀工作，本发明的继动阀起一般继动阀的作用；
2
Relay valves convert a sustained air flow from a three-way pilot valve into a momentary pulse or bleed, which shifts a control valve and then closes.
延迟阀可调节从三通控制阀到瞬间脉冲或放气阀的空气流量，放气阀或瞬间脉冲改变控制阀，然后关闭。
3
Finally take the relayvalve for example, time lag characteristic of air brake actuating system is discussed and the spectrum analysis is introduced in…