Why will a turbocharged diesel engine produce black smoke if excessive additional load is applied too quickly?

Question

Accepted Answer

The inertia of the turbocharger rotor causes a time lag which delays the turbocharger speed increase.

Answer

Exhaust energy would draw excess air.

Answer

Exhaust gas pumping losses are increased due to turbine windage.

Answer

Exhaust gas back pressure falls slightly due to increased nozzle action.

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