At the time of student life, we heard that water is the […]
At the time of student life, we heard that water is the source of life and one of the indispensable and most important material resources for human survival and development. The same effect of oil on the engine, and has the role of lubrication, cooling, sealing, cleaning, etc., can be said that the quality of the oil directly affects the performance and life of the engine. But why can't oil be replenished with metabolism like water in the human body, but must be replaced as a whole? Here's just for everyone.
The reason why the oil needs to be replaced
1, the role of oil lubrication we all know, but in the lubrication process oil will be gradually consumed, which will produce impurities, affect the lubrication of the oil, so need regular replacement.
2. Cooling is also a function of oil. After a long time of use, the cooling effect will be reduced.
3, good sealing mechanical efficiency will increase, due to long-term use of oil and heat, it is inevitable that chemical reactions will occur, and reduce its sealing.
4. The oil will take away the impurities and metal wear caused by the engine's operation, but it will not be excluded from the body, so this is also a reason for the oil to be replaced frequently.
5. The oil will gradually decrease during use. When the piston descends, a layer of oil film forms on the cylinder cylinder wall. When the piston operates at a high speed, some oil is sucked into the combustion chamber and burned together with the mixed gas.