Phenomenon: turbocharger bearing damage, engine power decline, high oil consumption, black smoke, serious supercharger can not work.
The reason:
1. Insufficient lubricating oil pressure and flow.
A. Insufficient supply of lubricating oil for turbocharger journal and thrust bearing;
B. Insufficient lubricating oil to keep floating between the rotor journal and the bearing;
C. The supercharger has been running at high speed, but the lubricating oil has not been supplied in time.
2. Inclusion of debris or sediment into the lubrication system.
3. The oil has deteriorated through oxidation.
A. Fuel oil is overheating and too much gas passes between the piston and cylinder wall;
B. Cooling water leaks into the oil;
C. Improper selection of oil and failure to replace oil regularly as required.
Treatment method:
1. Check whether the pressure of lubricating oil is normal and the amount of oil meets the requirements.
2. Replace lubricating oil regularly as required, and keep lubricating oil clean.
3. Use lubricating oil strictly according to the regulations and requirements, and do not mix.
4. The engine should be avoided to work under the condition of high temperature, maintain the normal operating temperature of the engine.