Experimental investigation of a spark ignition engine using blends of biogas

Biogas from cow dung is one of the best fuel which readily mixes with gasoline yielded less emission and better performance on gasoline engines. In this study an attempt has been made experimentally on gasoline engine operating with enriched and compressed biogas blends B10, B20 and gasoline. It was observed significant increase in specific consumption and reduction in brake thermal efficiency of the engine. Exhaust gas emissions were measured and analysed for
hydrocarbons (HC), carbon dioxide (CO2), carbon monoxide (CO) and oxides of nitrogen (NOX) at engine speed of 2000 rpm. The concentration of CO, CO2 and HC emission were
found to be decreased and reverse the case NOx for biogas blends.