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柴油机一旦发生反转,机车就会受到不同程度的损坏,甚至会发生事故。由于柴油机反转,造成机油泵不泵机油,各部分润滑表面得不到润滑,加速这些运动副件的磨损,同时进排气顺序颠倒,引起配气相位混乱,燃烧不完全,排气严重冒黑烟,发动机功率下降,油耗增加。造成柴油机反转的常见原因有:一、起动时操作不当在手摇起动时,活塞未到达上止点,减压机构已扳回到工作位置,不再起减压作用,使活塞没有到达上止点就被推回,造成柴油机反转。二、新的或大修后的机车由于压缩系密封性好。如起动摇车转速不够(一般都发生在操作不熟练者),有时也
In the event of a reversal of the diesel engine, the locomotive will be damaged to varying degrees and may even cause an accident. Due to the reversal of the diesel engine, the oil pump does not pump the oil, and the lubrication surfaces of all the parts are not lubricated. As a result, wear and tear of these moving parts are accelerated. At the same time, the order of intake and exhaust is reversed, causing chaos in the gas phase, incomplete combustion and serious exhaust gas Black smoke, engine power down, fuel consumption increased. Common causes of reverse diesel engine are: First, the improper operation at start When the hand crank, the piston does not reach the top dead center, decompression mechanism has been regained to the working position, no longer play decompression, the piston did not reach the top The point was pushed back, causing the diesel engine to reverse. Second, the new or overhaul of the locomotive as a result of compression of a good seal. Such as starting the car speed is not enough (usually occurred in the operation of unskilled), and sometimes also