Question: Q2: A compression-ignition engine has a compression ratio of 15, which can be analysed based on the diesel air-standard cycle. The pressure and temperature at

Q2: A compression-ignition engine has a compression ratio of 15, which

Q2: A compression-ignition engine has a compression ratio of 15, which can be analysed based on the diesel air-standard cycle. The pressure and temperature at the beginning of compression are 1 bar and 18 C, and the air-fuel ratio 28:1; and the calorific value of the fuel is 44 MJ/kg. Find the maximum pressure (kPa) and temperature (K); the cut-off ratio; the thermal efficiency (%); the work done (kJ/kg) and the imep (kPa) of the engine. Assume: Cp = 1.01 kJ/kg.K ; R=0.287 kJ/kg.K and k= 1.4

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