Engineering · Diesel — Air Systems
A turbocharger increases engine power output mainly by:
- ARaising the fuel injection pressure
- BForcing a greater mass of air into the cylinders so more fuel can be burned✓ Correct
- CIncreasing the cooling water flow
- DLowering the exhaust back pressure only
Explanation
A turbocharger is an exhaust-gas-driven compressor that boosts charge-air density. More air mass per cylinder allows more fuel to be burned, raising power without enlarging the engine.
Authority: Diesel Engines (USCG engineering topic)
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