Technical Paper
Combustion Characteristics of Aluminum Oxide Nanoparticles-Diesel Blends in a Constant Volume Chamber
2024-04-09
2024-01-2125
This study investigates the effects on combustion characteristics of aluminum oxide (Al2O3) nanoparticles as additives to diesel in a constant volume chamber. Depending on the amount of aluminum oxide nanoparticles added, the test fuels are labeled as DA25, DA50, DA100, which represent 25, 50, and 100 mg of aluminum oxide nanoparticles into 1 L of pure diesel, respectively. The ambient temperature for this experiment ranged from 800 to 1200 K to cover conventional and low temperature combustion regimes. And the oxygen concentration ranged from 21% to 13% to simulate different levels of exhaust gas recirculation (EGR). Based on in-cylinder pressure traces and results of apparent heat release rates, there was an improvement in combustion characteristics with the addition of aluminum oxide nanoparticles. For all the tested fuels, the ignition delay increased with the reduction of ambient temperature and increase of oxygen concentration.