How do motorcycles burn engine oil?

Motorcycle oil generally means that the friction gap between the piston and the cylinder increases, which means that the oil enters the combustion chamber of the engine and participates in the combustion together with the mixed gas. The phenomenon of "burning engine oil" in vehicles will cause the oxygen sensor of vehicles to be damaged too quickly, 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.

Serious engine oil combustion will lead to insufficient engine lubrication, irreparable damage or even scrapping of the engine, 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.

Extended data:

Based on comprehensive maintenance experience and vehicle characteristics, the reasons for burning engine oil can be roughly summarized as follows:

1. Because the domestic fuel quality is not synchronized with the international standards, a large amount of carbon deposits are easily formed in the combustion chamber during engine operation, which is the root cause of various engine problems.

2. The carbon deposit will be deposited in the groove of the piston, which will cause the piston ring to stick together, thus causing the piston ring to be stuck and unable to seal completely. The "stuck" piston ring greatly reduces the oil scraping sealing ability. In addition, sludge will also block the oil return hole, and the oil will not flow back normally, resulting in an increase in fuel consumption.

3. Carbon deposition will aggravate the wear between the piston and the cylinder wall, resulting in excessive clearance, which will lead to oil entering the combustion chamber.

4. The valve oil seal is corroded and aged, and the seal is poor. It can be said that the valve oil seal is the most easily worn component in the engine, and this problem basically exists in cars that have traveled more than 65,438+10,000 kilometers.

5. The front and rear crankshaft oil seals are aging, and the front and rear crankshaft oil seals are in continuous contact with engine oil in a large area. Impurities in the engine oil and continuous temperature changes in the engine gradually weaken the sealing effect, leading to oil leakage or oil leakage.

References:

Combustion engine oil-Baidu encyclopedia