An eight cylinder turbocharged aftercooled four-stroke) cycle diesel engine operates with an inlet pressure of 1.8 atm at its maximum rated power at 2000 M RPM. Bore and stroke of the engines are 128 mm and 140 mm respectively. and volumetric efficiency based on inlet manifold conditions of 1.8 atm and 325 K after the aftercooler is 90% The compressor isentropic efficiency is (70% calculate: Ts (nd)s nu (c) act=?? a) The power required to drive the turbocharger compressor, [kW] b) The pressure at the turbine inlet if the exhaust gas temperature is 923K and the turbocahrger isentropic efficiency is 65%, and the turbine exhaust to the atmosphere, [atm] c) The amount of after cooling energy needed, [kW] d) The overall efficiency of the turbocharger, [%] PA Asuume: a fuel-air ratio of 0.035, and the following properties: C kJ/kg K Var= 1.4; Cp.gas 1.25 KJ/kg K; Ygas = 1.31; Ambient conditions T-25C and P= 1atm =1.005 Pair