Special diesel engine fault analysis

l. diesel engine turbocharger early damage
Cummins 6CT8.3 diesel engine turbocharger damage, replace it with a new turbocharger, check the oil pressure and other ministries were normal, working around 30min turbocharger turbine housing becomes quite red; turbine shell material is cast iron, normal diesel engine exhaust temperature turbine housing did not appear redness determine the diesel engine exhaust temperature is too high, the main reason for the exhaust temperature:

① of diesel exhaust door closed lax; 

② supply advance angle is too late; operation 

③ diesel engine overload. Based on the work of the diesel generator set is not operating under overload conditions, check the valve clearance in the specified range, and finally found the diesel generator fuel supply advance angle too late to re-adjust the supply advance angle, fault disappears. This is also the cause reasons turbocharger early damage.

2.6135K-10 diesel engine exhaust pipe to take from the smoke
ZL45 loaders (6135K-10 diesel engine) driving, operating weakness, diesel engine exhaust pipe to smoke a lot of white smoke, measuring the engine speed, the maximum reach 1000r/min (rated speed 2200r/min) found no abnormalities, check the low pressure oil -by-cylinder demolition injector high-pressure pipe inspection, normal fuel injection, the intact cylinder phenomenon check injection pump advance with the coupling bolts loose, the measurement the aircraft fuel supply advance angle of 3 ° (the aircraft standard 14 to 17 °) . Analysis based on the inspection, the cause of the failure to supply advance angle is too late, incomplete combustion of fuel injected into the cylinder will be discharged to the evaporation of oil mist combustion chamber, resulting in a diesel engine can not reach the rated speed, inability to work. Readjust the fuel supply advance angle of 17 °, the diesel engine is working properly, loaders walking and weakness disappeared.

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