Weifang 140KW generator fuel 3) if it is caused by poor lubrication lubrication system, then there are two possibilities: a lack of oil in the diesel engine, or engine oil quality problems. ① If it is due to the lack of oil in the engine, the diesel all moving parts inside should have strain or burning phenomenon, and the piston, cylinder liner should be heavier strain (because where cooling and lubrication is by cooling nozzle spray lubricant to achieve), but the piston, cylinder, intake and exhaust camshafts and moving parts are quite good, no lubrication undesirable phenomena. And if there is a lack of oil low oil pressure protection alarm, view alarms, oil pump, oil pressure are normal. Therefore, the phenomenon of lack of oil can be ruled out; ② the above exclusion may be that the failure was due to a problem caused by engine oil quality. Also observe the phenomenon from the failure, malfunction occurred in parts of basic and rod neck crankshaft main bearing diesel engine at maximum force, because these parts are lubricated for the most demanding position, when the poor oil lubrication (insufficient film strength), these parts will be the most before being worn. Once the bearing surface of the protective layer is damaged, within