An Experimental Investigation on CI Engine Powered with Biodiesel of Used Temple Oil at different Injection Pressures and Combustion Chamber Shapes

Abstract

The aim of this research work is to study effect of injection pressure (IP) on the performance of compression ignition (CI) engine. In India, there is a huge potential of Used Temple Oil (UTO) due to many mythological and religious beliefs and it can be used to produce biodiesel. Experiments were performed on CI engine powered with diesel and biodiesel by changing IP and combustion chamber shapes at different loads. In the first part, IP varied in steps of 20 bar and in the second part, combustion chamber shape [hemispherical combustion chamber (HCC), toriodal combustion chamber (TCC) and toriodal re-entrant combustion chamber (TRCC)] changed keeping the optimized IP which provides better engine performance. The output characteristics of the engine were reported and analyzed. It has been observed that the increase in IP gave better results in terms of performance parameters, the better results were obtained at an IP of 200 bar and the emissions like smoke, Hydrocarbon (HC) and Carbon monoxide (CO) are comparatively lower for biodiesel as compared with diesel fuel. However, NOx was higher than that of the diesel fuel. Also it is revealed from this work that TRCC yielded better results as compared with other CC shapes.