//Pressure at end of compression stroke(in bar)
p2=15;
//Initial Pressure(in bar)
p1=1;
//Ratio Of Specific Heats
y=1.4;
//Initial Temperature(in Kelvin)
t1=290;
//Presure at start of expansion(in bar) 
p3=40;
//Specific Heat at Constant Volume (in kJ/kG K)
Cv=0.717;
//Gas constant(in J/kmolK)
R=8314;