• Y.Sowjanya
• Dr.K.Kalyani Radha

This study has been Scarcity of conventional petroleum fuels has promoted research in alternative fuels for internal combustion engines. Worldwide energy demand has been growing steadily during the last five decades and most experts believe this trend will continue to rise. The conventional petroleum fuels for internal combustion engines will be available for few years only, due to a tremendous increase in population .Biodiesel is a green fuel produced from renewable resources, and offers clean combustion over conventional diesel fuel. However, several authors report to increase in NOX emissions for biodiesel compared with conventional diesel fuel. In the previous paper results shows that engine performance i.e., brake specific fuel consumption (BSFC) blend B20 was decreased and brake thermal efficiency increased compared to blends like B5, B10, B15, B25. In the present study, antioxidants like ethylenediamine, P-phenylenediamine, L-ascorbic acid are mixed in proportions (500ppm, 750ppm and 1000ppm) with B20 fuel and tested engine performance and exhaust emissions on a single cylinder, four stroke, water cooled diesel engine with canola oil methyl ester diesel blends at constant speed with varying loads . According to engine performance test results, brake specific fuel consumption (BSFC) of B20 with antioxidants decreased and brake thermal efficiency increased compared to those of B20 without antioxidants. With the addition of antioxidants additives NOx were decreased and HC emissions and CO emissions were slightly increased compared to B20 but almost nearly equal to diesel. As the concentration proportion of additives increases in Blend B20 the more NOx reduces .So,1000ppm concentration of B20 fueled with P-Phenylenediamine reduced 40% NOX followed by EDA as 32% and last by L-A as 21% respectively and nearly equal to diesel.

Biodiesel, canola oil, additives, P-phenylenediamine (PDA), ethylenediamine (EDA), L-ascorbicacid, performance and emissions, ppm.

"EFFECT OF ANTIOXIDANT ADDITIVES ON ENGINE PERFORMANCE AND EMISSIONS OF A DIESEL ENGINE FUELLED WITH CANOLA OIL METHYL ESTER DIESEL BLENDS ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.645-655, June-2019, Available :http://www.jetir.org/papers/JETIR1907T65.pdf

"EFFECT OF ANTIOXIDANT ADDITIVES ON ENGINE PERFORMANCE AND EMISSIONS OF A DIESEL ENGINE FUELLED WITH CANOLA OIL METHYL ESTER DIESEL BLENDS ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp645-655, June-2019, Available at : http://www.jetir.org/papers/JETIR1907T65.pdf