Inderscience Publishers

Performance and energy analyses of a diesel engine fuelled with Koroch seed oil methyl ester and its diesel fuel blends

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Performance of a single cylinder four–stroke diesel engine is analysed in the light of first law of thermodynamics in this study considering 10% (B10) to 40% (B40) (by volume) blending of Koroch seed oil methyl ester (KSOME) with diesel as fuels. An energy balance study is carried out to quantify the various losses associated with diesel engine processes on the basis of experimental data. Performance parameters such as brake thermal efficiency (BTE), brake specific fuel consumption (BSFC), indicated power (IP), indicated thermal efficiency (ITE), indicated specific fuel consumption (ISFC), exhaust gas temperature (EGT) are determined for each fuel operation at various loads. It was found that KSOME and its diesel blends show slightly higher BSFC, lower BTE, and higher EGT. IP was more for the blends up to B30 compared to diesel fuel operation, but it significantly reduced in case of the blend B40 indicating more energy losses with this fuel blend. ITE was also lower and ISFC was more for B40 at all loads. The energy analysis indicates higher unaccounted heat losses for the blend B40 which mainly accounts for the losses resulting from incomplete fuel combustion.

Keywords: performance evaluation, Koroch seed oil methyl ester, diesel engines, energy analysis, thermodynamics, biofuels, diesel blends, alternative fuels, biodiesel

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