Optimization of Engine Parameters using Jatropha Methyl Ester and Pongamia Methyl Ester

Abstract

Nitrogen dioxide is an irritant gas, which at high concentrations causes inflammation of the airways. Nitrogen dioxide and nitric oxide are referred to together as oxides of nitrogen (NOx). NOx gases react to form smog and acid rain as well as being central to the formation of fine particles (PM) and ground level ozone, both of which are associated with adverse health effects. NOx is produced from the reaction of nitrogen and oxygen gases in the air during combustion, especially at high temperatures. In areas of high motor vehicle traffic, such as in large cities, the amount of nitrogen oxides emitted into the atmosphere as air pollution can be significant. NOx gases are formed whenever combustion occurs in the presence of nitrogen. Reduction of such pollutants is a major focus for research work. This paper presents the concept of emission reduction using experimental analysis of CI (diesel) engine emission performance using biodiesel (jatropha methyl ester, pongamia methyl ester) compared to that of traditional diesel. Selected natural oils are blended with diesel at various ratio like 10%, 20%, 30% and 40% and tested on a engine test bed. The results shows that biodiesel blends, when compared with the traditional diesel, reduces the emission of harmful gases like CO, CO2, HC, NOx, and specific fuel consumption and increases the brake thermal efficiency.