//Engine1 type:4-stroke,4-cylinder,SI engine
//indicated horsepower of engine1(in kW)
ip1=40
//mean piston speed of engine1(in m/s)
sp1=10
//Engine2 type:2-stroke,2-cylinder,SI engine
//indicated horsepower of engine2(in kw)
ip2=10
//ratio of bore of the engines1:2
d=2
//mean effective pressures of the two engines are the same