clc clear //Input data C=86;//The composition of carbon in the fuel by weight in percentage H=14;//The composition of hydrogen in the fuel by weight in percentage e=1.25;//Equivalent ratio o=32;//Molecular weight of the oxygen co=44;//Molecular weight of the carbondioxide c=12;//Molecular weight of the carbon s=32;//Molecular weight of the sulphur so=64;//Molecular weight of sulphur dioxide n=28;//Molecular weight of the nitrogen h2=2;//Molecular weight of the hydrogen Fc=0.86;//Fraction of C //Calculations Ra=1/Fc;//Relative air/fuel ratio x=2*[1+(0.9765/2)-(1.488*0.8)];//By oxygen balance Tm=0.5957+0.4043+4.476;//Total number of moles of dry exhaust gas vc=(0.5957/Tm)*100;//Volumetric analysis of carbonmonoxide of combustion in percentage vco=(0.4043/Tm)*100;//Volumetric analysis of carbondioxide of combustion in percentage vn=(4.476/Tm)*100;//Volumetric analysis of nitrogen of combustion in percentage //Calculations printf(' The percentage analysis of dry exhaust gas by volume : \n CO = %3.2f percent \n CO2 = %3.2f percent \n N2 = %3.2f percent ',vc,vco,vn)