Question: A 4 stroke gasoline engine with a 3.0 L displacement and a compression ratio of 10:1 runs at 1500 RPM with the air at 75

A 4 stroke gasoline engine with a 3.0 L displacement and a compression ratio of 10:1 runs at 1500 RPM with the air at 75 kPa, 280 K after the intake is done. The mean effective pressure is 1000 kPa. Calculate the engine efficiency. Find the specific energy (in kJ/kg) added by the combustion of the fuel.

Spark plug nlet valve Cylinder Air/fuel mixture

Inlet valve Air/fuel mixture Spark plug Cylinder

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