//Bore of the engine(in cm) D=10; //Length of stroke for square engine(in cm) L=10; //Number of cylinders k=4; //Volumetric effciency nv=0.75; //Speed(in rev/s) N=40; //Density of air Pa=1.15; //Coefficient of air flow Cd=0.75; //Area of orifice(in m^2) A2=0.25*%pi*0.03^2;