Influence on emissions and performance of CI engine with graphene nanoparticles blended with Karanja biodiesel

Addition of nanoparticles improves catalytic reaction during combustion of biodiesel accounting to their high surface to volume ratio. Nano particles also augments radiative mass transfer properties of fuel and reduces ignition delay. Test was done on light duty diesel engine with Karanja biodiesel. Graphene nanoparticles where blended with Karanja methyl ester and its impact on engine performance and emissions characteristics were studied. Blends were prepared by mixing B20 with graphene nano particles with ultrasonicator. Samples tested include B20 (20% Karanja biodiesel and 80% diesel by volume), B20G25, B20G50 and B20G75 (i.e.B20 with 25mg/L, 50mg/L and 75mg/L of graphene nanoparticles respectively). Results reported that blends with graphene particles were at par with diesel fuel with respect to performances and emissions. Inclusion of graphene nano particles facilitated in reducing the emissions such as CO, HC and NOx compared to diesel. B20G75 showed notable decrement in CO, NOx and HC emissions at higher loads.