Combined effect of oxygenated liquid and metal oxide nanoparticle fuel additives on the combustion characteristics of a biodiesel engine operated with higher blend percentages. (15th April 2020)

• Record Type: Journal Article
• Authors: Kumar, Shiva; Dinesha, P.; Ajay, C.M.; Kabbur, Poojitha
• Is Part Of: Energy. Volume 197(2020)
• Publication Date: 2020-04-15
• Subjects: Biodiesel -- Cerium oxide -- Diethyl ether -- Brake thermal efficiency -- Engine emissions; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Energy consumption -- Periodicals; 333.7905
• DOI: 10.1016/j.energy.2020.117194
• Languages: English
• ISSNs: 0360-5442

Abstract

Abstract: In this study, an attempt has been made to investigate the use of higher blend percentage of biodiesel in diesel engines without affecting much on the performance of engines using fuel additives. Waste cooking oil (WCO) biodiesel B30 blend (WCO 30% + neat diesel 70%) and B40 (WCO 40% + neat diesel 70%) are used as the fuel together with diethyl ether and Cerium oxide (CeO2 ) nanoparticles as additives. Biodiesel is mixed with 2% by volume of diethyl ether (DEE) and 80 ppm concentration of CeO2 nanoparticles which are maintained constant throughout the study. Performance, combustion characteristics and emission parameters have been studied and compared with the values for neat B30 and B40 biodiesel. Results showed that brake thermal efficiency of B30 with additives is 29.57% and is at par with neat B20 operation (29.72%). Maximum reduction of HC and smoke emissions are observed for B40 with additives, which are 16% and 11.7% less than neat B20 fuel operation. B30 with diethyl ether and CeO2 nanoparticles showed minimum NOx emission which is 6% less than neat B20. Highlights: Use of higher biodiesel percentage with fuel additives has been investigated. Combined effect of oxygenated additive and CeO2 on the CI engine combustion were studied. Higher cylinder pressure and heat release rate were found for B30 with additives. Reduced energy consumption was observed for B30 with additives. Reduced NOx emission was obtained for higher biodiesel blends with additives.