Publication

Abstract : This work describes the effect of n-butanol and n-hexnol as fuel blends to check the performance and the emission levels of a DI diesel engine for various loads at constant engine speed. The fuels proportions required to be tested are, B5H (n-butanol 5%, 10% n-hexanol along with 85% diesel in volume), B10H, B15H, B20H and B25H (Hexanol added to the blends are constant). Experiments were conducted on unmodified 4-stroke diesel engine of single cylinder and naturally aspirated one. The engine is tested in idle and various loading conditions with the help of dynamometer by using the test fuel blends. When the blends were compared with diesel fuel, brake specific fuel consumptions are higher for alcohol blends were observed. The results displayed that smoke emissions and carbon monoxide emissions reduce while HC emissions tend to increase with blend proportions present in the fuel. Increasing the blend proportions increases the NO emissions.