A spark-ignition engine produces 224 kW while using, 0.0169 kg/s of fuel. The fuel has a higher

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Question:

A spark-ignition engine produces 224 kW while using, 0.0169 kg/s of fuel. The fuel has a higher heating value of 44,186 kJ/kg, and the engine has a compression ratio of 8:1. The friction power is found to be 22.4 kW. Determine (a) the brake thermal efficiency (b) the indicated thermal efficiency (c) the mechanical efficiency (d) the brake engine efficiency and (e) the indicated efficiency.