Table 1: Assumed values of the pertinent parameters to various components.

Parameter Value Optimal mode of the ICE 3.5 kW 5000 rpm Rotational inertia of flywheel 0.5 kg/m2 Ideal air condition (ambient pressure and temperature) 1 bar @ C Frictional resistance of air compressor 2 Nm Mechanical efficiency of air compressor 80% Volume of storage tank 105 liters Efficiency of air turbine 75% Frictional resistance of air turbine 2 Nm Allowable exhaust-gas backpressure 0.5 bar