Does the turbocharger of a turbocharged engine need to be replaced after prolonged use?

The service life of a turbocharger is usually equivalent to that of an engine, so it does not need to be replaced frequently. However, improper operation may lead to premature damage and require replacement. In China, many cases of turbocharger replacement are caused by the owner's incorrect operation. As an inertial moving component, the turbine operates at a very high speed. The bearings of the intake and exhaust turbines are the main friction components, which rely on the engine's lubrication system to provide lubricating oil for lubrication and heat dissipation. If the turbine suddenly stalls during high-speed operation, it will continue to rotate at ultra-high speed due to inertia. At this point, the engine has stopped working and the lubrication system has also stopped, causing the lubricating oil to be unable to circulate. This will cause poor heat dissipation of the bearings, and local high temperatures may damage the bearings, requiring replacement of the entire turbocharger. Therefore, the correct operating method is not to immediately turn off the engine after high-speed and high load driving, but to let the vehicle idle for a few minutes, and then turn off the engine after the turbine speed decreases. In addition, maintenance work is also crucial to maintain the good working condition of the turbocharger and extend its service life. Specifically, it includes: maintaining cleanliness, regularly cleaning the air filter to prevent dust and other impurities from entering the compressor impeller; Pay attention to keeping the car hot. After starting the engine, do not rush to accelerate. Instead, let the vehicle idle for a period of time; Regularly check the working condition of the turbocharger and whether each component is loose or damaged; And carefully turn off the engine after high-speed operation to ensure that the turbocharger rotor can gradually decelerate. In general, as long as the owner operates correctly and pays attention to maintenance, the turbocharger usually does not need to be replaced.