Subtopic: I.C. engine systems – fuel, cooling, lubrication, ignition, electrical, intake and exhaust
Question Statement:
Turbocharging a tractor diesel engine with an exhaust-driven turbine and intake air compressor increases engine power primarily by:
Options:
(A) Forcing higher density compressed air into the cylinders, allowing more fuel to be burned per power stroke with higher volumetric efficiency
(B) Directly driving the crankshaft via a turbine belt
(C) Cooling the engine coolant
(D) Eliminating engine friction power
Answer Key:
A
Step-by-Step Solution & Explanation
Turbochargers recover waste exhaust gas enthalpy to boost intake manifold density, increasing mass airflow and combustion capacity without increasing engine displacement.