Performance, Combustion and Emission Analysis of Biodiesel Derived from Acidic Oil (By-product of soybean oil refining process

Abstract

Biodiesel appear to be one of the most energy efficient, environmental friendly alternatives in the recent edge of technology. The present work deals with the Performance, Emission and Combustion characteristics of Biodiesel derived from Acidic oil, which is a by-product of soybean oil refining process. Biodiesel was extracted using two- step esterification and transesterification process from the raw acidic oil. Different blends were prepared on the volume basis and one separate blend was prepared using 2% Antigel Additives in one of the combination. Tests were conducted with diesel and prepared blends on single cylinder, four stroke, multi-fuel, water cooled engine at compression ratio of 17.5:1 with different loading conditions. Present investigation indicates reduction in performance parameter as the engine is fuelled with biodiesel, but significant changes are observed in combustion parameters in case of biodiesel fuelled engine. On the other hand, reduction in CO, HC and increase in NOx, CO2 is observed with the use of biodiesel. It is further seen that, when 2% Antigel Additives are added, significant reduction in BSFC, exhaust gas temperature, NOx percentage and integrated heat release rate is observed. Simultaneously it is associated with increase in brake thermal efficiency, HC and CO percentage and peak in cylinder pressure.