cylinder liner deformation (Dieselpartsworld) 2016-02-28    

The 40 reason engine burning oil "
8 cylinder liner deformation
With 7 mentioned due to the wear caused by the cylinder roundness is different, and some other reasons, such as heating or cylinder head bolt tightening degree of inequality and other factors, are likely to lead to a distortion of the cylinder liner, cause the piston ring can not and cylinder surface formed with the appropriate contact, oil scraping function is reduced; resulting in local residual too much oil, eventually fleeing into the combustion chamber to burn, resulting in oil consumption increased.
9 "PCV" positive crankcase ventilation valve or tube obstruction
PVC (positive crankcase ventilation) will be the main function of the engine combustion chamber into the crankcase using gas recirculation, which reduce the content of unburned hydrocarbons. The mixed gas channeling into air, a mixture of fuel and combustion gas, during the power stroke of the piston due to high pressure, gap / channeling piston ring and cylinder sleeve into the crankcase. The PVC system usually has a pipe routing crankcase to the carburetor or intake manifold. Vacuum in the engine intake manifold intake of the mixed gas channeling by sucked out of the crankcase, into the combustion chamber for recycling. PVC (positive crankcase ventilation valve) may be clogging sludge, other impurities or mixed gas channeling in the film. This will lead to oil deterioration, excessive sediment generation, resulting in obstruction of the piston ring oil ring), oil consumption increased, premature wear of the piston ring; crankcase pressure increased, resulting in crankshaft sealing ring failure, engine oil leakage, the operating condition of the engine deterioration.