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← ScienceWhich risk increases when idling a turbocharger diesel engine?
A)Compressor surge and impeller fatigue
B)Oil starvation in bearings arises✓
C)Catalytic converter core disintegration
D)Over-boost leading to cylinder knocking
💡 Explanation
Oil starvation risk increases during prolonged idling of a turbocharger diesel due to loss of oil pressure. The oil pump slows, and insufficient oil film leads to bearing metal contact because hydrodynamic lubrication fails; therefore oil starvation occurs rather than compressor surge at low RPM.
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