一台ZL-50C型装载机出现发动机无法启动的故障,其症状为:起动机能带动发动机,启动时运转速度也能逐渐提高,但尚未达到正常的速度就自动熄火,并出现发动机反转的现象。 从故障现象看,很像是供油不畅、喷油不正时和负载过大等原因引起的,为此,根据“从简单到复杂”的原则,按照“低压油路,喷油正时,高压油路,发动机的负荷”的顺序逐项进行了检查、诊断。 A ZL-50C type loader appeared the engine can not start the fault, the symptoms are: the starter can drive the engine, start running speed can be gradually increased, but not yet reached the normal speed on the auto-shutdown, and the phenomenon of engine reversal . From the failure phenomenon, much like the poor fuel supply, fuel injection is not positive and caused by excessive load and other reasons, according to “from simple to complex” principle, in accordance with the “low-pressure oil, fuel injection timing, High-pressure oil, engine load, ”the order of inspection, diagnosis.