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Which consequence results when a turbocharger operates outside its compressor map parameters?

A)Compressor surge induces blade stress
B)Increased exhaust EGT damage turbine
C)Boost oscillations limit AFR control
D)Excessive oil temperature triggers coking

💡 Explanation

Compressor surge occurs because insufficient mass flow at a given pressure ratio forces reversed flow episodes through the compressor. This surging induces rapid blade stressing, therefore severely reducing turbocharger lifespan, rather than overheating or limiting AFR control.

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