TY - JOUR
TI - Numerical investigation of natural gas feasibility in a direct injection heavy-duty diesel engine
AU - Hadjab Riad
AU - Kadja Mahfoud
JN - Thermal Science
PY - 2024
VL - 28
IS - 5
SP - 4101
EP - 4113
PT - Article
AB - In the present study, numerical simulations were performed on a direct injection heavy-duty Diesel engine. Methane, which is the predominant component in natural gas, was chosen as the fuel. The simulations involved five exhaust gas recirculation ratios (0%, 10%, 20%, 25%, and 30%) to examine their effect on engine performance, NOx, and soot emissions. The numerical results were compared with existing experimental measurements of a typical Diesel engine without exhaust gas recirculation. A comparison of the numerical results of the four cases of exhaust gas recirculation ratios reveals that the 30% exhaust gas recirculation ratio achieves a significant reduction in NOx emissions without increasing soot emissions. Consequently, the engine meets the authorized emission standards without excessive performance degradation.