Effect of cerium oxide nanoadditive on Annona Methyl Ester in a thermally coated direct injection diesel engine

The utilisation of biodiesel in compression ignition (CI) engines results in a reduction of exhaust emissions; Meanwhile, most of the studies assert that the usage of biodiesel in engines emits more NOx emission, which interruption the use of biodiesel. In this experimental work, an investigation of the impact of cerium oxide nanoadditive added in the fuel as a fuel modification technique on NOx reduction in an Annona biodiesel-operated thermal barrier coated (TBC) CI engine has been conducted. Experimental results show that the fuel modification technique increases the brake thermal efficiency by 13.30% and decreases the brake specific fuel consumption by 9.37% in the combined biodiesel - nanoadditive operated TBC engine as compared to the conventional engine. Emission parameters such as CO, HC, NOx, and smoke were also significantly reduced as compared to the conventional engine due to the high combustion temperature and oxygen denoting catalyst of cerium oxide nanoadditive.