Performance characteristics of Jatropha ethyl ester as diesel engine fuel at different compression ratios
The results of the performance and emission of a variable compression ratio ignition engine (vertical single cylinder) by using Jatropha ethyl ester blends with diesel fuel at two levels of compression ratio (16.5:1 and 18.5:1) have been presented in this paper. The fuel samples were prepared by blending Jatropha ethyl ester with diesel in the composition of 0:100, 10:90, 20:80, 30:70 and 40:60 (%). Results indicated that Brake thermal efficiency for all biodiesel blends was more as compared to diesel. Brake thermal efficiency increased with the increase in load and also increased with the increase in compression ratio. Brake specific fuel consumption in case of blends was more as compared to diesel. Brake specific fuel consumption decreased with the increase in load as well as with the increase in compression ratio. Exhaust gas temperature increased with the increase in load and also increased with the increase in compression ratio for all fuel blends.
Keywords: Jatropha ethyl ester, diesel engine, compression ratio, brake thermal efficiency, brake specific fuel consumption