Influence of metal-based cerium oxide nanoparticle additive on performance, combustion, and emissions with biodiesel in diesel engine.

Biodiesel has been renowned as potential and alternative fuel for years. In order to improve the quality of the conventional fossil fuels, biodiesel, and air pollution from combustion, additives are essential to exploit. In this study, the uses of cerium oxide (CeO) nanoparticle additive for B20 fuel in a diesel engine are investigated. The CeO nanoparticles with cetyl-trimethyl ammonium bromide are doped into the B20 fuel by using ultrasonicator. The purpose of the experimental work was adopted to enhance engine combustion and reduce the emissions with an approach of CeO nanoparticle additive. The experiment was conducted on a diesel engine using different propagation of CeO nanoparticle in blended mahua methyl ester fuel such as B20 + CeO 50 ppm, B20 + CeO 100 ppm, and B20 + CeO 150 ppm. The obtained results are compared with the diesel and B20 fuels. The minor changes are obtained in B20 fuel properties due to the addition of CeO nanoparticles. The performance of brake thermal efficiency and combustion of pressure data is observed to be enhanced by the addition of a metal-based additive. The CO, HC, and smoke are decreased for B20 fuel with nanoparticles. The NO is reduced by dosing the CeO due to the oxidation of unburned CeO in the exhaust.