Akademik Veri Yönetim Sistemi
MEETCON - GLOBAL II. INTERNATIONAL CONGRESS ON SCIENTIFIC RESEARCH, Madrid, İspanya, 23 - 31 Mayıs 2026, ss.72-84, (Tam Metin Bildiri)
Maritime transportation constitutes a major component of global trade while also emerging as a significant source of greenhouse gas emissions. In line with international regulations, the decarbonization process of the sector has accelerated, making the evaluation of alternative fuels to replace conventional fuels a critical research area. This study provides a comparative assessment of the main alternative fuels applicable to two-stroke marine engines, namely LNG, LPG, methanol, and ammonia, within an integrated framework considering emission performance, life-cycle impacts (Well-to-Wake), technical feasibility, and operational criteria. In this study, the analysis goes beyond the commonly adopted single-dimensional evaluation approaches in the literature by addressing not only exhaust emissions but also fuel production pathways, storage requirements, and engine integration aspects. The findings indicate that LNG and LPG stand out as transition fuels in the short term due to their compatibility with existing infrastructure and engine technologies, while methanol offers a balanced and practical solution in the medium term owing to its storage advantages and operational flexibility. Ammonia, despite its zero-carbon potential, presents significant technical challenges in terms of combustion stability and emission control. Furthermore, it is determined that the effective utilization of alternative fuels in two-stroke marine engines largely depends on dual-fuel systems and advanced combustion strategies. This highlights that fuel selection is not solely dependent on fuel properties but represents a multi-criteria engineering problem involving engine behavior and system integration. In conclusion, the decarbonization of maritime transportation is too complex to be addressed by a single fuel solution and requires a system-level approach in which fuel characteristics, production pathways, engine performance, and operational requirements are evaluated collectively.