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 jatrophakaranja 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.

Automated summary

The study examines the use of ethylene glycol diacetate as an oxygenated additive in blended biodiesel to enhance the performance of a diesel engine. The experiments were carried out on a diesel engine with variable compression ratio, using biodiesel blends containing 10-30% Jatropha and karanja oil methyl ester, and 1-3% additive. The results showed that adding 3% additive improved the brake thermal efficiency by 3.6-4.2% and reduced the brake specific fuel consumption by 0.08-0.24 kg/kWh. The emissions of hydrocarbons and carbon monoxide decreased, while nitrogen oxide slightly increased. The study concludes that ethylene glycol diacetate can be used as a suitable additive in blended biodiesel to improve the performance of diesel engines.