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← TechnologyWhich outcome occurs when rapid diesel engine deceleration?
A)Crankshaft torsional resonance increases sharply✓
B)Excessive fuel injector back-pressure occurs
C)Turbocharger compressor surge is dampened
D)EGT (Exhaust Gas Temperature) cools slowly
💡 Explanation
Torsional resonance increases rapidly because the sudden reduction in load causes the crankshaft's inherent elasticity to initiate a self-excited **torsional vibration**. Therefore, resonance increases, rather than suppressed through, mechanical dampening or altered combustion dynamics.
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