船舶在风浪较强和主机停车情况下在公海或港口停泊时,舷外水难免会通过排气系统进入气缸,从而引起水击,使柴油机发生故障。本文介绍了废气系统中排气门的自动控制,阐明了排气门自动控制的电气原理线路、三种工况(控制、起动、停车)的工作图表和结构图,该结构使用效果良好。 When a ship berths on the high seas or in port under strong storm and host parking, it is inevitable that outboard water will enter the cylinder through the exhaust system, thus causing water hammer and causing the diesel engine to malfunction. This paper introduces the automatic control of the exhaust valve in the exhaust system, explains the electrical principle circuit of the exhaust valve automatic control, the working chart and the structure diagram of the three operating conditions (control, starting and stopping). The structure works well.