The combined effect of EGR and butanol can effectively reduce the Nitrogen Oxides (NOx) emissions by reducing the combustion temperatures because NO x formation is a temperature dependent phenomenon in diesel engines. The combined effect of EGR and Butanol blend on Brake Thermal Efficiency
(BTE), Brake Specific Fuel Consumption (BSFC) and exhaust emissions will be studied. From literature review it is found that a 15% EGR rate results in maximum BTE and minimum BSFC. It is also found that the combined effect of EGR and Butanol reduces the NO x emissions by 25% with a slight increase in Carbon Monoxide (CO), Hydro Carbon (HC) and smoke opacity.After optimizing the operating parameter with n-butanol, the combustion and emission studies would be done and further attempt would be made to reduce the NO x emission using some technique viz. EGR. Tests would also be performed to
check the long term usability of the selected fuel. The basic goal of this study is to replace the commercially available diesel with butanol blend mixed fuel and compare the performance of diesel engine with the EGR too.
Diesel Engine, EGR, NOx, N-butanol