Experimental studies on the influence of zirconium nanoparticle on biodiesel–diesel fuel blend in CI engine

Abstract

An experimental study is performed to analyse the effect of (Zr2O3) zirconium nano additives of 25 ppm on biodiesel (20%)-diesel (80%) (B20) blends in a direct injection 4.4kW diesel engine. Performance, combustion and emission characteristics of B20 and B20 blend with 25 ppm (B20 + Zr) were compared with baseline diesel. Peak cylinder pressure is higher for B20 followed by B20 + Zr and diesel fuel at 100% engine load condition. Experimental results revealed that due to the addition of zirconium nanoparticles, there is a marginal reduction of BSFC and peak heat release with a slight increase in brake thermal efficiency. Reduction of HC, CO and smoke is observed in case of zirconium blended biodiesel in comparison with diesel. Nitrogen oxides and CO2 emissions were slightly higher for zirconium added blends indicating better combustion since NOx is predominant during better combustion.