Impact of Nanoparticles on the Performance and Emissions of Diesel Engine Using Mahua Biodiesel

Abstract

This experiment confronts the performance as well as the exhaust gas emission highlights (characteristics) of the four-stroke diesel engine (single-cylinder direct injection) by introducing three fuel samples: biodiesel (B100), diesel–biodiesel (B40) and diesel–biodiesel–nanoparticles (B40T105MWCNT45). Titanium dioxide (TiO2) and multi-walled carbon nanotubes (MWCNT) are taken in a quantity of 105 and 45 mg/l and are mixed with diesel–biodiesel fuel sample by using the ultrasonicator. N-butyl alcohol (1% by volume) is also added in nanoparticles dispersed fuel sample to increase the nanoparticles’ stability into diesel–biodiesel fuel blend. The experiment is performed on the diesel engine at 1500 rpm which is kept constant throughout the experiment. The results obtained from the experiment show clearly that by adding the nanoparticles, namely TiO2 and MWCNT into the diesel–biodiesel fuel mixture (i.e. B40T105MWCNT45), there is a significant improvement of 27.6 and 10.3% in the brake thermal efficiency (BTE) as compared to B100 and diesel. Also, the reduction of 22.8 and 20.4% in NOx; 22.4 and 27.9% in CO; 35.8 and 52.7% in HC is observed when compared to B100 and diesel.