PERFORMANCE & EMISSION ANALYSIS OF CI ENGINE BY USING BLEND S OF COTTONSEED OIL & BUTANOL

With a recent energy crisis, alternative fuel, especially for transportation, has been explored to reduce the consumption of gasoline, on the way of which use of alcohol & biodiesel have been successfully promoted to reduce this uneven diesel - gasoline consumption pattern; whereas, Diesel - Biodiesel& ethanol blends was tested for performance and emission with acceptable results. However, diesel biod iesel - ethanol blends still faces challenges in finding suitable emulsifier, preventing water absorption from ambient and adapting existing distribution infrastructure to cope with low flash point. Hence, the present study evaluates feasibility in using but anol blending with diesel - biodiesel due to no need for emulsifier, less moisture absorption and less variations in physical/chemical properties of the blends. Diesel biodiesel were blended at concentration B - 10, B - 20 and B - 30 Diesel - biodiesel & Butanol were blende d at concentrations of DBB [50:10:40], DBB [50:20 :30], DBB [50:30:10], by volume without any emulsifier additive to observe solubility and stability. Relevant physical and chemical properties were measured and compared with specification of die sel. Then blends were tested with unmodified single cylinder diesel engine for engine performance, fuel consumption and emissions, with comparison to commercially available diesel in the market. The physical/chemical properties of the blends reveal accepta ble values; whereas, the engine testing results reveal that DBB [50:30:20], can be used in single cylinder diesel engine without any modification to the Engine.