Effects of Biodiesel and its Blends with Diesel on the Performance and Emission Characteristics of A Di-Diesel Engine

In this study high speed diesel (HSD),biodiesel blend (B20),acrylic acid blend (E18A2) and biodiesel-acrylic acid ternary blend(B20+E18A2) were tested on a single cylinder four stroke naturally aspirated direct injection diesel engine. Experiments were conducted under four loading conditions at a rated speed of 1500 rpm. The performance and emission analysis were carried out for the full range of loading at standard conditions. The results revealed that the addition of biodiesel leads to increase in brake specific fuel consumption whereas the acid blend and ternary blends shows reduced BSFC at all loading conditions. On the other hand the brake thermal efficiency increased while adding oxygenated additives separately to base fuel and with biodiesel as ternary blend when compared to biodiesel blend. Biodiesel (B20) blend showed lower carbon monoxide and hydrocarbon emissions compared to other test fuels. All test fuels showed higher NOx emission when compared to the base fuel (HSD).