Akademik Veri Yönetim Sistemi
International Journal of Hydrogen Energy, cilt.216, 2026 (SCI-Expanded, Scopus)
The maritime sector is under increasing pressure to transition to net-zero emissions. Modifying marine compression-ignition engines (CIEs) to use alternative fuels offers a viable transition option. Hydrogen (H2) and ammonia (NH3) have emerged as the primary alternative fuels due to their carbon-free features and compatibility with marine CIEs, with minor modifications. This study examines the feasibility of H2 and NH3, focusing on technological, economic, and environmental dimensions. The results showed that, for diesel fuel, the H20A40 mixture at 60 Nm and 80 Nm loads drastically reduced CO2 emissions by 66% and increased NOx emissions by 83%, respectively. Rising H2–NH3 content increases cylinder pressure (CP) and pressure rise rate (PRR), and decreases the main injection-induced heat release rate (HRR). In addition, high H2–NH3 substitution increased the estimated life-cycle cost by up to 44% relative to diesel fuel, indicating limited cost-competitiveness in the absence of regulatory incentives.