Optical diagnostic study of ammonia-kerosene dual-fuel engine combustion process

Zhu, Genan; Sun, Wanchen; Zhang, Hao; Guo, Liang; Yan, Yuying; Lin, Shaodian; Zeng, Wenpeng; Jiang, Mengqi; Yu, Changyou

Abstract

In this study, the differences in the combustion process of ammonia-premixed ignition with conventional diesel and kerosene as pilot fuels were investigated based on flame chemiluminescence, and further study on the effects of ammonia ratio (AMR) and direct injection timing (DIT) on the ammonia-kerosene dual-fuel combustion (AKDC) process was carried out. The results show that the kerosene with stronger volatility is more conducive to promoting rapid and stable combustion of ammonia. A composite flame structure is observed in dual-fuel modes. With the increase of AMR, the capacity to ignite ammonia is lessened, the flame area and luminosity are stabilized and then reduced, and the flame hue is transformed from blue-green to yellow. Higher combustion rates are observed when the DIT lies between −9° and −12° CA ATDC, resulting in higher flame area and luminosity. The overly advanced or delayed DIT leads to the deterioration of ammonia combustion.

Citation

Zhu, G., Sun, W., Zhang, H., Guo, L., Yan, Y., Lin, S., Zeng, W., Jiang, M., & Yu, C. (2024). Optical diagnostic study of ammonia-kerosene dual-fuel engine combustion process. International Journal of Hydrogen Energy, 81, 110-126. https://doi.org/10.1016/j.ijhydene.2024.07.256

• Journal Article Type: Article
• Acceptance Date: Jul 16, 2024
• Online Publication Date: Jul 23, 2024
• Publication Date: Sep 4, 2024
• Deposit Date: Jul 29, 2024
• Publicly Available Date: Jul 24, 2025
• Journal: International Journal of Hydrogen Energy
• Print ISSN: 0360-3199
• Electronic ISSN: 1879-3487
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 81
• Pages: 110-126
• DOI: https://doi.org/10.1016/j.ijhydene.2024.07.256
• Keywords: Ammonia-kerosene dual-fuel combustion; Combustion characteristics; Flame development; Ammonia ratio; Direct injection timing
• Public URL: https://nottingham-repository.worktribe.com/output/37864476
• Publisher URL: https://www.sciencedirect.com/science/article/abs/pii/S0360319924029306