Potential of ammonia as H2 carrier for dual-fuel combustion in CI engines
As the search for sustainable transportation fuels continues, ammonia emerges as a particularly promising candidate, especially for maritime applications where its toxicity is less of a concern. Being liquid at moderate pressures, ammonia offers advantages over hydrogen in terms of storage, handling...
| Authors: | , , , , |
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| Format: | article |
| Publication Date: | 2025 |
| Country: | España |
| Institution: | Universidad Camilo José Cela (UCJC) |
| Repository: | RUIdeRA. Repositorio Institucional de la UCLM |
| OAI Identifier: | oai:ruidera.uclm.es:10578/44565 |
| Online Access: | https://doi.org/10.1016/j.ijhydene.2025.151055 https://hdl.handle.net/10578/44565 |
| Access Level: | Open access |
| Keyword: | Ammonia Compression-ignition engines Dual-fuel combustion Hydrogen |
| Summary: | As the search for sustainable transportation fuels continues, ammonia emerges as a particularly promising candidate, especially for maritime applications where its toxicity is less of a concern. Being liquid at moderate pressures, ammonia offers advantages over hydrogen in terms of storage, handling, and energy density, making it a viable hydrogen carrier. This study examines a dual-fuel compression-ignition engine operating on diesel and ammonia at substitution ratios of 10–30 %. Despite adjustments to operating conditions, primarily EGR and combustion timing, ammonia resulted in lower thermal efficiency and increased NOx emissions compared to conventional combustion. Furthermore, the high N2O emissions led to an overall rise in CO2 equivalent emissions. However, when compared to hydrogen at the same substitution ratio, ammonia achieved higher thermal efficiency, likely due to reduced cylinder walls heat losses |
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