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← TechnologyWhich event results when harmonic damper degrades on high-performance inline-6 engine crankshaft?
A)Crankshaft fatigue from torsional vibration✓
B)Oil pump cavitation from resonance effects
C)Valve float due to irregular timing
D)Bearing failure from lubricant breakdown
💡 Explanation
When a harmonic damper degrades, torsional vibrations within the crankshaft are no longer suppressed because the damping material loses elasticity, exciting resonant modes. Therefore crankshaft fatigue develops due to stress accumulation, rather than oil pump cavitation, valve float, or bearing failure, which involve fluid dynamic or lubrication malfunctions.
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