Effect of Tetra Hydro Furan on Performance and Emission Characteristics of Ci Engine Fuelled With Methyl Ester of Jatropha

A number of studies currently focus on the renewable fuels to reduce the reliance on petroleum fuels. Biofuels such as biodiesel and bioethanol have been studied and tested in many countries including India. This paper is aimed to investigate the performance and emission characteristics of a direct injection (DI) diesel engine when fuelled with methyl ester of Jatropha oil (MEJO). The ignition improver tetra hydro furan(THF) is added to methyl ester of Jatropha oil to examine the performance of the diesel engine. The experimental results shows that the maximum brake thermal efficiency was obtained with 2% THF blended with MEJO when compared with pure MEJO. Among the THF blends, the minimum brake specific fuel consumption of 0.339 was observed with 2% THF. The lowest carbon monoxide (CO), unburned hydrocarbons(HC) and oxides of nitrogen(NOx) emissions are recorded with 2% THF blend. The smoke density of 2% THF with MEJO was reduced by 14.3% when compared with diesel. Hence ,the 2% THF blended with MEJO could improve the performance and reduce the emissions of the diesel engine. Keywords-Biodiesel, Diesel Engine, Performance, Emissions.