Emission Reduction in a Direct Injection Diesel Engine Fueled by Neem-Diesel Blend

Due to the rapid depletion of petroleum fuel, researchers throughout the world are looking for alternative fuels to run engines. Today biodiesel is a prime candidate as an alternative to diesel fuel. Reduction in pollution adds to the merits of biodiesel. Various aspects of engine performance using Neem-Diesel blend (B-20) as fuel were studied through extensive experimentation at different injection pressures on a single cylinder direct injection diesel engine. Data thus obtained were analyzed and compared with those of pure diesel. Significant reduction in the NOx concentrations, smoke density, and CO and HC emissions were observed. At the same time no significant effect on brake specific fuel consumption and brake thermal efficiency were observed. Based on these results 1.57 kN/cm2 was found to be the optimum injection pressure for Neem-Diesel blend (B-20).