起动机转动失控(或起动机跟转)是指起动机将发动机带动着火后,由于控制电路等原因,使起动机电磁开关不能断开,起动机长时间运转,而驾驶员又发现不及时,造成起动机严重损坏的一种现象。通常情况下发动机启动后,有经验的驾驶员是靠出现的异常响声,凭经验来判断起动机是否跟转,并采取相应的处置措施。但在大型装载机、挖掘机等工程机械上,因发动机功率大、驾驶室封闭严密,发动机启动后若出现起动机跟转现象,驾驶员极不易凭异常响声察觉,严重时会导致起动机损坏,从 Starter rotation out of control (or starter with the switch) refers to the starter after the engine led the fire, due to control circuits and other reasons, so that the starter can not disconnect the electromagnetic switch, the starter for a long time, and the driver found not timely, Cause a serious damage to the starter phenomenon. Under normal circumstances after the engine starts, experienced drivers rely on the occurrence of abnormal noise, with experience to determine whether the starter to follow, and take appropriate measures. However, in large loaders, excavators and other construction machinery, because of the engine power, the cab closed tight, if the starter after the engine starts to follow the phenomenon, the driver is very easy to detect abnormal noise, serious cause damage to the starter ,From