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+clc;funcprot(0);//EXAMPLE 17.11
+// Initialisation of Variables
+n=4;.......................//No of cylinders
+k=0.5;.....................//Four stroke engine
+r=8;.......................//Compression ratio
+d=0.1;.....................//Engine bore in m
+l=0.1;.....................//Engine stroke in m
+etaV=0.75;.................//Volumetric efficiency
+N=4800;....................//Engine rpm
+afr=15;....................//Air fuel ratio
+C=42000000;................//Calorific value of fuel
+rhoa=1.12;.................//Atmospheric density in kg/m^3
+Pmi=10;....................//Mean effective pressure in bar
+etamech=0.8;...............//Mechanical efficiency
+//Calculations 
+IP=(n*Pmi*l*(%pi/4)*d*d*N*k*10)/6;.................//Indicated power in kW
+Ac=n*(%pi/4)*d*d*l*(N/2)*(etaV/60);.....................//Air consumption in m^3/s
+ma=Ac*rhoa;........................................//Mass flow of air in kg/s
+mf=ma/afr;.........................................//Mass flow of fuel in kg/s
+etath=(IP*1000)/(mf*C);...................................//Indicated thermal efficiency
+disp(etath*100,"Indicated thermal efficiency (%):")
+BP=IP*etamech;.....................................//Brake Power in kW
+disp(BP,"Brake power (in kW):")