Issue |
E3S Web Conf.
Volume 522, 2024
2023 9th International Symposium on Vehicle Emission Supervision and Environment Protection (VESEP2023)
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Article Number | 01009 | |
Number of page(s) | 12 | |
DOI | https://doi.org/10.1051/e3sconf/202452201009 | |
Published online | 07 May 2024 |
Experimental study on the factors influencing performance and emissions of hydrogen internal combustion engines
1 CATARC Automotive Test Center (Tianjin) Co., Ltd., Tianjin 300300, China
2 Tianjin University State Key Laboratory of Engines, Tianjin 300072, China
* Corresponding author: wutaoyang@catarc.ac.cn
Hydrogen internal combustion engines (H2-ICEs) have advantages such as clean combustion and zero carbon emissions, and have become one of the important technical routes for decarbonization in the internal combustion engine industry. In this paper, several key factors affecting the performance and emissions of hydrogen internal combustion engines, such as ignition timing, excess air coefficient, and hydrogen injection timing, were systematically studied on a spark ignition multi-point injection (MPI) hydrogen internal combustion engine bench. The experimental results indicate that the ignition timing controls the combustion phase of hydrogen. Moderate early ignition can improve the brake thermal efficiency (BTE) while having little impact on the NOX emissions. Excess air coefficient(λ) can significantly affect the performance and emissions of H2-ICE. Along with the increase of the λ, the NOX emissions first increases and then continues to decline. When the λ reaching 2.1 or above, near zero emissions of NOX can be achieved. The advance of hydrogen injection timing will slightly increase the peak of cylinder pressure and instantaneous heat release rate. However, overall, the impact of hydrogen injection timing on BTE and NOX emissions is not significant on MPI H2-ICE.
Key words: Hydrogen internal combustion engines / Ignition timing / Excess air coefficient / Near zero emissions of NOX / Brake thermal efficiency
© The Authors, published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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