Experimental &Characterization Analysis of Hybrid Biodiesel Blends on Compression Ignition Engine

This research work reveals the effect of biodiesel unsaturation on its fuel properties and thereby on combustion, performance and emissions characteristics. It was found that the instaurations of biodiesel has a substantial effect on its fuel properties. Important fuel properties such as heating value, and cetane number decreases with increase in unsaturation and density, iodine value increases with increase in unsaturation. The combustion characteristics such as ignition delay and premixed combustion duration increases with increase in unsaturation. But the peak heat release rate and peak cylinder pressure decreases with increase in unsaturation. The thermal efficiency and smoke emissions decrease with increase in unsaturation and oxides of nitrogen, unburnt hydrocarbon and carbon monoxide increases with increase in unsaturation.