Evaluating the Performance of a Direct Injection Diesel Engine Using Corn Oil Biodiesel Blended with Graphene Oxide Nanoparticles and Hydrogen

Abstract

Global environment and emission policies are mandating vehicle manufacturers to control diesel engine emissions. In this work, the performance of Corn oil biodiesel doped with Graphene oxide (GO) nanoparticles and enriched with hydrogen is studied with a focus on combustion efficiency and emissions. Experiments were conducted on diesel and biofuel blends with varying biofuel vol/vol content ranging from 0% to 25%. Initial results indicate that the B20 blend optimizes combustion, with a notable Brake Thermal Efficiency increase. Later B20 is doped with GO nanoparticles at 100 ppm and experiments were conducted with incremental hydrogen flow rates ranging from 2 to 10 lpm. Further, the integration of GO nanoparticles and hydrogen into B20 significantly reduced emissions, with B2H10 achieving the most significant reduction in both hydrocarbon (93.9%) and carbon monoxide (73%) emissions. Smoke opacity also significantly decreased, particularly with B2H10, which demonstrated a 34.4% reduction at full load. Finally, a Deep Long Short-Term Memory (DLSTM) regression model is developed to predict the emissions characteristics of the fuel blends that showed an averaged RMSE and MAE of 0.498 and 0.413, respectively.