A diesel engine operating on the 4-stroke cycle is to be designed to operate with the following characteristics where the mean conditions are: 1 bar and 25∘C, brake power =254 kW, volumetric efficiency =0.79, brake specific fuel consumption =0.27 kg/kW.hr, air-fuel ratio =17:1, speed =1525 rpm. Calculate the required engine capacity and brake mean effective pressure. Heat of combustion of diesel fuel =43000 kJ/kg, Ra=287 J/kg.K.