PERFORMANCE AND EMISSION CHARACTERISTICS OF SPARK IGNITION ENGINE FUELLED WITH GASOLINE/N-BUTANOL BLENDS

The present study is the experimental investigation of performance and emission characteristics of spark ignition engine (SI) with gasoline-n-buatanol blends. In various properties n-butanol is almost equivalent to gasoline. Recently n-butanol can be manufactured from bio mass and it will be a renewable fuel in near future. Also the viscosity of n-butanol is higher than gasoline. Blends of n-butanol of proportions from 30 to 50% by volume along with gasoline were tested in a single cylinder SI engine in various speeds. The results shows that there was a considerable reduction in un burnt hydrocarbons (UBHC), Carbon monoxide (CO) emissions in all speeds. Brake thermal efficiency (BTE) of all blends were higher than gasoline in all the speeds. There was a slightly increase in brake specific fuel consumption(BSFC) and oxides of nitrogen(NOx). This study is giving an opportunity to reduce the dependency of gasoline which is a fossil fuel to certain extent.