Car engine burning oil and analysis of the top five causes of
In the use of imported cars, some driving a ~ 20,000 kilometers began to take Lanyan, burning oil, not only increased oil consumption, but also piston, piston ring and cylinder wear increase, and pollution of spark plug, so that the engine is not running steady, power has declined markedly. There is the direct cause oil burning oil by fleeing into the combustion chamber between the piston and cylinder, as well as through the crankcase ventilation chamber from the carburetor inlet suction.
(1) cylinder, piston, piston rings with the impact of oil on the cylinder channeling: At present, the engine lubrication and pressure lubrication have adopted a combination of splash lubrication, gas pumping wall with splash lubrication. At work, cylinder wall, between the piston ring and piston are covered with oil, when the three meet the normal, the oil will not go Cuanshang; when the three meet the non-normal, the cylinder wall and piston engine oil will be channeling between into the combustion chamber, which is mainly caused by channeling oil. Engine after a certain time, piston rings reduce the radial width of less elastic, open space larger and the role of sealing and scraping the oil deterioration. Piston ring groove clearance increased, strengthening the role of the pumping piston rings. Cylinder and piston wear increased with the gap, so that clearance of oil increased, the piston being Guajin row oil combustion chamber. The channeling of oil prone to carbon deposition and accelerate the cylinder mill in damage, resulting in a vicious cycle.
(2) piston rings stuck to the channeling effects of the oil: In the repair was found due to piston ring card dead and generate substantial phenomenon of burning more oil. When the piston rings get stuck in the tank, the piston rings to lose flexibility, sealing deteriorate, not only in the piston oil on a large number of rows into the combustion chamber, and the Pistons do work when a large number of high-pressure gas fleeing into the crankcase, so that the pressure crankshaft box increased, splash of oil through the crankcase ventilation into the inlet. So that oil and gas mixture into the combustion chamber with the crankcase ventilation When they find a serious and carburetor air channeling within the oil when the piston ring stuck mostly due to timely excluded.
(3) The engine warranty the quality of the gas pumping oil channeling effects: the motor in the repair quality of the oil cylinder channeling a greater impact. Cylinder roundness, cylindrical form error and surface roughness through the large, piston rings according to technical requirements of water matching the piston and piston side cylinder, the cylinder centerline and crankshaft centerline perpendicularity super-bias, will have the phenomenon of channeling oil. During the maintenance, the Pistons coke removal water clean, anti-loaded piston ring, ring I is not rational distribution and ring gap too big mouth, will speed up the cylinder with the degree of channeling oil.
(4) the quality of the cylinder piston rings channeling oil impact: on the new piston driving the near future for channeling oil imports resulting decomposition of automobile engines, check the hair with the cylinder piston due to the quality of the oil most of the causes. At present, there are a lot of imports of poor quality piston rings and elastic enough, elastic persistent bad, are not well adapt to the deformation of cylinder liner, which is now scheduled for imported cars driving distance from time to time after the main oil cylinder channeling.
(5) The use of cylinder oil channeling the impact of oil: oil viscosity affect the lubricating oil film thickness, oil viscosity is too large too small will cause the lubrication performance slowdowns, increased mechanical wear and tear, especially the oil too thin, the more likely cause cylinder channeling oil. Diluted by the gasoline engine oil deterioration or thinning, it will increase oil consumption. In addition, too much oil increases, oil pressure is too high, crank every poorly ventilated, the motor temperature is too high, would also aggravate the cylinder channeling oil.
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