What is the situation of burning engine oil in cars? Why do you burn oil? Is it good for cars?

"Combustion engine oil" means that the engine oil enters the combustion chamber of the engine and participates in combustion together with the mixed gas. The phenomenon of "burning engine oil" in the car will lead to the rapid damage of the oxygen sensor of the vehicle, which will lead to the increase of carbon deposition in the combustion chamber, unstable idle speed, weak acceleration, rising fuel consumption and excessive exhaust emissions. In severe cases, the engine is not lubricated enough, which will cause irreparable damage or even scrapping, which will lead to a substantial increase in maintenance costs and even potential accidents. Under frequent traffic conditions, many car owners report that their cars "burn engine oil", so it is necessary to understand the harm, identification and avoidance of burning engine oil.

Causes of burning engine oil

1. The gap between the piston and the cylinder wall is too large, causing the spilled oil to rise to the combustion chamber with the up-and-down movement of the piston.

2. The viscosity of engine oil is too low, and the lubrication effect is not good, which aggravates the wear of piston ring and causes channeling and volatilization.

3. The piston ring is worn, or the corresponding position is reversed during packaging.

4. The crankcase vent is blocked, which leads to high oil pressure and increased backflow resistance, and stays on the inner wall of the cylinder for a long time, resulting in carbon deposition during combustion.

Serious classification of engine oil combustion

Within 2000, one liter is heavy engine oil, 2000-4000 is medium engine oil and 4000-5000 is light engine oil. According to the national standard GB/T 19055-2003, the consumption ratio of engine oil at rated speed and full load shall not exceed 0.3%, that is, the lubricating oil is normally lost every 5000 km1-1.5l..

How did the piston ring get stuck?

In fact, the principle of piston ring sticking should start from the oil circuit, and the reason for sticking is the oil circuit. The temperature of the oil bearing is 1 10℃, and the high temperature caused by the long-term uncleanness of the oil circuit keeps the oil at 120℃ or higher for a long time, so that the oil will be exhausted ahead of time, and the small holes in the oil ring will dry, crust and stick for a long time. One cylinder stuck is 5000 kilometers per liter of oil, then the working conditions of other cylinders began to be bad, and soon all four cylinders got stuck, becoming 1000 kilometers or even hundreds of kilometers per liter of oil. Therefore, to solve the problem, we must start with the root oil circuit, which is the way to get rid of the root.

First, make sure there is no need for overhaul. The waste gas valve should be checked, but the oil pollution of the hose is definitely not the criterion for judgment. Need to check whether the lower cylinder wall is seriously worn. If there is no serious wear and tear, there is no need for overhaul. Now the demolition-free technology is very mature and gradually accepted by the majority of car owners. In particular, PNF nondestructive repair technology has completely got rid of the technical shackles of automobile repair shop operation. Without removing a screw, the owner can operate it himself. When driving, the piston ring is loosened and the effect is remarkable.