//Bore of the engine(in cm)
D=20;
//Stroke of the engine(in cm)
L=30;
//Volumetric efficiency of the engine
nv=0.8;
//Airfuel ratio
AF=4;
//Speed of the engine(in rpm)
N=300;
//Calorific value of fuel(in kJ/m^3)
CV=8000;
//Brake thermal efficiency
nbth=0.25;