JME_V5_N4_RevP1 Aditya kolakoti B.V.A. Rao Journal on Mechanical Engineering 2249 - 0744 5 4 35 45 Biodiesel, Vegetable Oil, IDI Engine, Performance and Emissions Rapidly increasing consumption of fossil fuel and petroleum products has been a matter of concern for the many countries which import crude oil. This is at the expense of huge foreign exchange on one hand and increasing tailpipe emissions on the other hand. Therefore, it is necessary to investigate about renewable energy sources. Among the biomass resources, biodiesel offers a very promising alternative to diesel oil. It is renewable, and has similar or better properties. Biodiesel commands crucial advantages such as technical feasibility of blending in any ratio with petroleum diesel fuels. Extensive research and demonstration projects have shown that, it can be used pure or in blends with conventional diesel fuel in unmodified diesel engines. This paper presents the results of wider experimental campaign carried out on IDI engine by various authors and aimed at evaluating the overall performance, emissions and the combustion trends. Experimental results with different fuels like neat biodiesel, blends of biodiesel –diesel & biodiesel - additive combinations have been discussed in detail. August - October 2015 Copyright © 2015 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=3619