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← ScienceWhich consequence results when an internal combustion engine cylinder experiences substantial premature detonation?
A)Increased overall thermodynamic efficiency
B)Formation of stable protective oxide
C)Piston ring land fracture✓
D)Reduced exhaust gas recirculation rate
💡 Explanation
Premature detonation causes excessively rapid pressure rise, initiating shock waves. Knocking erodes the piston material via uncontrolled combustion, specifically piston ring land fracture, because the shock stresses exceed material yield, therefore damaging the piston, rather than increasing efficiency.
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