Each end of the turbocharger motor rotor component is provided with a sealed skeleton seal to prevent organic exhaust gas and air from being compressed into the turbocharger housing.
If the crankcase ventilation working pressure oil does not pump oil from the turbocharger, it will lift the load on the rolling bearings of the motor rotor components and cause automobile oil to leak from the refrigeration compressor hydraulic seals into the diesel engine. During the maintenance period, exhaust pipe friction resistance should be checked to ensure that automobile oil leaks into the exhaust system from the hydraulic seal of the turbine engine on the diesel engine containing the catalytic reaction converter.
The return pipe is blocked or damaged, which will increase the working pressure in the turbocharger housing, and cause the automobile oil to spill from the sealing ring. When such leakage occurs, the empty intercooler should be cleaned and the motor oil in the intake system cleaned.