三、四类电空阀在东风型内燃机车上使用的数量很多,用途很广,动作很频繁。但是由于电空阀线圈在制造中存在的某些问题,造成线圈在出厂后自然断路,使用中断路和烧损。特别是烧损现象的严重出现,在机车运行中引起的事故相当多,影响很大。由此引起的机车故障较为复杂,乘务员一时也难以判别。 Third, four types of electric air valve used in the Dongfeng diesel locomotive on a large number of wide range of uses, movements are frequent. However, due to some problems in the manufacture of the solenoid valve coil, the coil naturally leaves the factory after it leaves the factory, uses an interruption circuit and burns out. In particular, the serious occurrence of burning phenomenon, caused a considerable number of accidents in locomotive operation, a great impact. The resulting locomotive fault is more complicated, the flight attendant is also difficult to distinguish.