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← TechnologyWhich risk increases when an engine's detonation frequency surpasses pre-ignition thresholds?
A)Piston ring land fractures develop✓
B)Valve float causes timing errors
C)Catalytic converter substrate melts
D)Crankshaft torsional resonance appears
💡 Explanation
Increased detonation introduces excessive pressure spikes because the pressure increases faster than designed. Shockwaves cause piston ring land micro-fractures, the piston ring restraint weakens, therefore piston damage accelerates, rather than timing errors or unrelated exhaust or crankshaft malfunctions.
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