Impact of additive ethylene glycol diacetate on diesel engine working with jatropha-karanja dual biodiesel

The present study investigates ethylene glycol diacetate as a prospective oxygenated additive for jatropha-karanja dual blended biodiesel for enhanced engine characteristics of a diesel engine. The experiments have been conducted at constant speed of 1500 rpm on a variable compression ratio diesel engine working with biodiesel having 10–30% of Jatropha and karanja oil methyl ester and 1–3% of additive. The brake thermal efficiency increased by 3.6–4.2% while the brake specific fuel consumption reduced by 0.08–0.24 kg/kWh for fuel blends by adding 3% additive. The hydrocarbon and carbon monoxide emissions reduced by a maximum of 7 ppm and 0.02% respectively with slight increase in nitrogen oxide over entire range of fuel blends. The peak cylinder pressure attained 53.2 bar with maximum heat release rate 63.7 J/oCA by addition of 3% additive. Thus, the ethylene glycol diacetate can be adopted as a suitable additive for jatropha-karanja blend dual biodiesel to achieve improved engine characteristics of diesel engines.