What are the causes of turbocharger impeller damage?
1 Answers
Turbocharger impeller damage is caused by foreign objects entering the turbocharger, sudden engine shutdown at high speeds, and aggressive throttle application during idle. Foreign objects entering the turbocharger: Due to the precise fit of internal components in the turbocharger, even small foreign objects can disrupt its operational balance, leading to damage. Foreign objects typically enter through the intake pipe, which emphasizes the importance of timely air filter replacement to prevent dust and other impurities from entering the high-speed rotating compressor impeller, which could cause unstable rotation or damage to other components. Sudden engine shutdown at high speeds: In turbochargers without an independent cooling system, sudden shutdown at high speeds causes an abrupt interruption in oil supply, preventing the internal heat of the turbocharger from being carried away by the oil. This can easily lead to the turbo shaft seizing. Additionally, the high temperature in the exhaust manifold at this time can carbonize any residual oil inside the turbocharger, forming deposits that block oil passages and lead to oil starvation, creating potential future damage to the turbocharger. Aggressive throttle application during idle: During cold starts, the engine requires time for oil pressure to build and reach the necessary lubrication points. Therefore, it is important not to abruptly press the throttle. Instead, the engine should idle for a while to allow the oil temperature to rise and improve fluidity, ensuring the oil reaches the turbocharger's lubrication points. Furthermore, prolonged idling should be avoided, as it can result in insufficient oil pressure, leading to poor lubrication and potential damage to the turbocharger.
