Performance of CI Engine Fueled with Used Temple Oil Biodiesel Blends at Different Injection Pressures

Biodiesel, as a renewable fuel, has been recognized as one of the best alternative fuels for a diesel engine in the present world. Among all engine parameters, ignition pressure is one of the most prominent influencing parameters for the performance and emission of biodiesel-fueled diesel engines. Due to India's many mythological and religious beliefs, there is a huge potential for Used Temple Oil (UTO). Hence, in this paper, an attempt has been made to study the behavior of diesel engines with UTO biodiesel. The UTO biodiesel is derived from a transesterification process and is evaluated for key fuel properties according to ASTM standards. The performance of the engine is compared with that of a conventional diesel. Tests have been performed on 4-stroke, direct injection, and constant diesel engines at load factors and injection pressures of 180, 200, and 220 bar. Performance and emission behavior are evaluated and compared with those of diesel. The results show that higher injection pressures lead to better results in terms of engine performance parameters. The results are found to be better for an injection pressure of 200 bar.