Diesel generator scuffing failure of precursory characteristics

Diesel generator scuffing failure of precursory characteristics of serious smoke exhaust and stalling, can't turn the crankshaft. Working at this time can't start the diesel engine, but should find out the reason and exclusion. Lubricating oil in use process, because of the dust from the outside or running excessive wear of the metal scrap the parts and parts formed by the erosion of metal salts etc. Will make the lubricating oil metamorphism. Lubricating oil deterioration after dark black, foam, grinding with finger, no sticky feeling, dripping on the white paper is dark brown. Contaminated the oxidation of lubricating oil in use process will produce acid soluble and insoluble colloidal sediment deposition in oil orifice, filter and various parts in the clearance, due to the shortage of lubricating oil in motion pair surface components, direct dry friction between the metal and abrasive wear, resulting in the diesel engine shaft and cylinder serious accidents, such as the use of the diesel engine reliability serious decline. Main causes include: measures: ( 1) In the early detection of cylinder shall, first of all, oil cylinder oil injection rate. Such as overheating phenomenon has not changed, can adopt single cylinder cut-out, to reduce the speed, speed up the piston cooling measures, such as until eliminate overheat. （ 2) When found cylinder, must reduce the speed quickly, and then stop. Continue to increase piston cooling, at the same time for turning. （ 3) As a result of the piston killed not turning, to stay in the piston cooling after a period of time, barring any activity. Easy cause overheat diesel engine deflagration, water temperature and oil temperature is too high can also lead to pull cylinder and piston ring jammed, resulting in a diesel engine power. When temperature increases, the diesel engine should check the oil cooler and the radiator, remove scale. If the body temperature is too low, will cause heat loss increases, the combustion chamber of diesel spray people cannot complete combustion, exhaust pipe take white smoke, the diesel engine. （ 4) When the piston bite dead is serious, can be injected into cylinders kerosene, after waiting for piston cooling leverages the flywheel or turning. （ 5) While lifting cylinder inspection, piston and cylinder liner should be traces on the surface of a cylinder with oil stone grind carefully. The damaged piston ring must be replaced. If the piston and cylinder liner was badly damaged and should be replaced. （ 6) When piston refitted, must carefully check whether the oil hole on cylinder oil injection is normal. If piston and cylinder liner are new, it should be after refitted to get up to speed, the running-in should begin to gradually add load and continuous operation under low load. （ 7) Such as cylinder accident cannot repair or not allowed to repair, can adopt sealed cylinder method to continue running.

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