37. Experimental Investigation on Performance and Emission Characteristics of Mixture of Sunflower and Soybean Biodiesels

Performance and emission characteristics of various biodiesel blends prepared in a ratio by volume from a mixture of sunflower and soybean biodiesels are studied. It was found that the engine’s performance characteristics like indicated power, indicated mean effective pressure, and the volumetric efficiency of the blend D70X15Y15 are higher than the other blends (16.75, 1.3, and 0.77%). It was also found that the blend D40X40Y20 has a significant effect on the break thermal and mechanical efficiencies than the other blends (23.32 and 17.83%). The air/fuel ratio is decreased with the increased load of all blends. The percentage of decrease in A/F is about 0.24–4.3%. And for all other blends, there is an increase in the A/F ratio. The emission characteristics of all blends are presented for the load. A significant decrease in CO and CO₂ emissions for the biodiesels D50X25Y25, D70X15Y15, D40X30Y30 up to 7.96–15.74% and 1.26–12.94% than that of diesel, respectively. The nitrogen oxides are decreased up to 4.8–18.2% with blends D70X25Y5, D40X30Y30, and X100 Y100. The smoke opacity for all blends X100 and Y100 are decreased up to 11.7–20.6%.