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diff --git a/2090/CH2/EX2.2/Chapter2_example2.sce b/2090/CH2/EX2.2/Chapter2_example2.sce
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+clc
+clear
+//Input data
+CV=42000;//The calorific value of the fuel in kJ/kg
+pa=5//Percentage of compression
+Pa=1.2;//Pressure in the cylinder at 5% compression stroke
+pb=75//Percentage of compression
+Pb=4.8;//Pressure in the cylinder at 75% compression stroke
+g=1.3;//polytropic index
+g1=1.4//Isentropic index
+n=0.6;//Air standard efficiency
+
+
+//Calculations
+V=(Pb/Pa)^(1/1.3);//Ratio of volumes
+r=(V*(pb/100)-(pa/100))/((1-(pa/100))-(V*(1-(pb/100))))//Compression ratio
+n1=((1-(1/r)^(g1-1)))*100//Relative efficiency
+nthj=n*(n1/100)//Indicated thermal efficiency
+x=(1/(CV*nthj))*3600//Specific fuel consumption in kg/kW.h
+
+//Output
+printf('The compression ratio of the engine is %3.1f \n The specific fuel consumption is %3.3f kg/kW.h',r,x)