IV. 5. Ideal power developed if 210 A Diesel engine has volume ratios of compression and expansion 15.3 and 7.5 respectively, measured on an indicator diagram. Air is induced in the cylinder at 1 bar and 27°C. 1. Assuming an ideal engine, determine the : • • mean effective pressure, ratio of maximum pressure to mean effective pressure cycle efficiency 2. Assuming an actual indicated thermal efficiency of 0.5 of the corresponding ideal efficiency, mechanical efficiency of 0.8 and the heat value of the fuel 42000 kJ/kg, find the conversion efficiency and the fuel consumption per kWh. Assume for air: Cp = 1.005 kJ/kg K; Cv = 0.718 kJ/kg K, y = 1.4. on the air-standard Dual