1机油消耗量过大机油消耗量过大,致发动机功率下降、油底壳机油平面下降较快及排气冒蓝烟,一般由油封或衬垫处的渗漏或汽缸壁磨损过度而烧机油引起。主要原因:①活塞与汽缸间隙过大;②活塞环特别是油环弹性差;③缸套、活塞环过度磨损,活塞环被粘住、对口或扭曲环装反;④活塞环与环槽边隙和侧隙过大或活塞上油环回油孔被积炭阻塞;⑤增压柴油机涡轮增压器弹力密封装置失效;⑥气门杆与导管配合间隙过大或过小致使油封失效。 1 oil consumption is too large Oil consumption is too large, resulting in decreased engine power, oil pan oil plane faster decline and exhaust blue smoke, usually by the oil seal or gasket leakage or cylinder wall wear over and burn the oil cause. The main reason: ① Piston and cylinder gap is too large; ② piston ring oil ring, especially poor flexibility; ③ cylinder liner, excessive wear piston ring, piston ring is stuck, the opposite or twisted anti-ring; ④ piston ring and ring groove edge The gap and backlash is too large or oil on the piston back to the oil hole is blocked by coke; ⑤ turbocharger turbocharger supercharger spring seal failure; ⑥ valve stem and the catheter with the gap is too large or too small, resulting in seal failure.