COMPARATIVE EVALUATION OF PERFORMANCE AND EMISSION CHARACTERISTICS OF JATROPHA, PONGAMIA, MAHUA AND EUCALYPTUS OIL BASED BIODIESEL IN DIESEL ENGINE

The rapid growth in population with their increasing energy requirement and increase in industrialization along with the continuous depletion of natural resources has forced us to search for an alternative fuel. These increases in demands have led to the exhaustive researches which gave more importance to study of biodiesel along with their properties. One of the important aspects of biodiesel is that it can be utilized in a diesel engine, devoid of any alteration in engine modification which made biodiesel as a promising alternative resource for future need. In this study, the best biodiesel blends were chosen and experiments were carried out in the conventional engine with no modification to analyze the performance characteristics along with combustion and emission parameters of biodiesel blend and related it with that of diesel properties. Here diesel was used as a reference fuel. Bio diesels were obtained from different oils such as Pongamia, mahua, jatropha and eucalyptus oil through the process of transesterification. The blend ratios taken for the test were B20. Further experiments were carried out to examine the properties of various biodiesel and its performance and emission characteristics with different blends ratio (J20, P20, M20, and E20) were studied and the results were weighed against properties of diesel. Among the various biodiesel blends, E20 proved to be a suitable biodiesel blend with an increase in brake thermal efficiency and the decrease in emission properties. Hence E20 proved to be a best alternate future fuel for diesel.