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← TechnologyWhich outcome occurs when rapid diesel engine crankshaft torsional resonance exceeds material fatigue limits?
A)Crankshaft fractures propagate rapidly✓
B)Scuffing increases bearing wear
C)Fuel injection timing drifts offset
D)Engine coolant temperature steadily decreases
💡 Explanation
Crankshaft failure occurs because exceeding torsional resonance limits initiates fatigue cracking. Crack propagation weakens integrity, eventually causing catastrophic fracture; therefore, crankshaft fractures increase rather than the engine maintains function under increased wear.
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