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Experimental Comparison of Oxygenated Vis-Avis Nano Doped Biodiesel-Ethanol Blends in a CI Engine

V. Rajangam*, M. Raghupathi and S. Sridharan

Recent days due to rapid depletion of petroleum products and their ever increasing costs have led to an intensive search for alternative fuels. Biodiesel is one such option to use as a fuel in diesel engines. But due to technical deficiencies, they are rarely used purely or with high percentage in an unmodified diesel engine. Therefore in this study Biodiesel-Ethanol blend with higher percentage of biodiesel is used in an unmodified diesel engine. When ethanol added to biodiesel increases brake specific fuel consumption and decreases combustion rate due to its low cetane number. To overcome the above problem and to increase the performance of Biodiesel-Ethanol blend, we have decided to dope high content oxygenated additive and high energy density nano particles. Diethyl Ether is used as a high content oxygenated additive fuel in this study for increasing combustion rate, decreasing Break specific fuel consumption and to reduce the emission. Alumina nano particles are used as additive in this study due to its high energy density, shorten the ignition delay, increasing combustion rate and to reduce the emission. The present investigation was established to compare performances of oxygenated and nano doped biodiesel-ethanol blend in a CI engine