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← TechnologyWhich outcome arises when a turbocharged diesel engine experiences significant turbocharger lag during rapid acceleration?
A)Sudden spike in manifold air pressure
B)Delayed combustion onset therefore reduced torque✓
C)Pre-ignition causing possible engine knock
D)Overboost event leading to turbine failure
💡 Explanation
Reduced air mass flow causes turbocharger lag because the turbine requires exhaust gas velocity to operate; therefore, combustion is delayed leading to decreased torque in low RPMs, rather than immediate boost or pre-ignition under normal conditions.
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