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← TechnologyWhich damage results in a turbocharged engine when boost pressure is excessively high?
A)Piston ring flutter develops rapidly
B)Valve float leads to collision
C)Oil starvation causes bearing failure
D)Detonation scours piston crowns✓
💡 Explanation
Detonation occurs due to excessive cylinder pressure and temperature inducing uncontrolled combustion. The resulting shockwaves erode the piston crown because the turbocharger over-delivers air and fuel, therefore detonation becomes probable rather than pre-ignition with lower pressure.
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