^aResearch Scholar, Department of Automobile Engineering, Bharath Institute of

Higher Education and Research, Chennai, Tamil Nadu, India

^bDepartment of Automobile Engineering, Bharath Institute of Higher Education

and Research, Chennai, Tamil Nadu, India

Biodiesel is a clean-burning, oxygenated monoalkyl-ester fuel manufactured from natural, renewable sources like new/used vegetable oils and animal fats. The injection time has a significant impact on engine performance, particularly pollutant emissions. The purpose of this research is to see if Chlorellea Emersonii methyl ester (CEME) can be used as a fuel alternative in a compression ignition (CI) engine. The CEME was synthesised using a transesterification technique, and the engine parameters (performance, emission, and combustion) were investigated using 20 (v/v%) biodiesel blends at retard, standard, and advanced injection timings (IT). In this study an alteration in injection timing were done with TRC and BF combination. Other than conventional injection timing of 23obTDC three more injection timing included ie 24obTDC (advance IT), 21obTDC (retarded IT) and 22obTDC (retarded IT). Outcome results showed 22obTDC(retarded IT) with 2. 12% improvement in BTE followed by 24.5%,35.15% and 90.2% reduction in HC,CO and smoke.