A computational study of operating range extension in a natural gas SI engine with the use of hydrogen
Article
Article Title | A computational study of operating range extension in a natural gas SI engine with the use of hydrogen |
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ERA Journal ID | 1184 |
Article Category | Article |
Authors | Gharehghani, A. (Author), Hosseini, R. (Author), Mirsalim, M. (Author) and Yusaf, Talal F. (Author) |
Journal Title | International Journal of Hydrogen Energy |
Journal Citation | 40 (17), pp. 5966-5975 |
Number of Pages | 9 |
Year | 2015 |
Publisher | Elsevier |
Place of Publication | United Kingdom |
ISSN | 0360-3199 |
1879-3487 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.ijhydene.2015.03.015 |
Web Address (URL) | http://www.sciencedirect.com/science/article/pii/S0360319915005790 |
Abstract | The performance of a natural gas fueled spark ignition engine was studied to investigate the effect of hydrogen enrichment on the engine operating range and combustion characteristics. A validated multi-dimensional CFD model coupled with detailed chemical kinetics mechanism was used to study the combustion process in Hydrogen/CNG engine. Results indicated that misfiring occurs in equivalence ratios of about 0.61, 0.48 and 0.42 for hydrogen fractions of 0%, 30% and 50% respectively. Also, combustion durations were 70, 47 and 45 degrees crank angle for hydrogen fractions of 0%, 30% and 50% respectively with same equivalence ratio (Ф ¼ 0.625). Regarding the emission, the maximum amount of break specific NOx was detected around Ф ¼ 0.83 (l ¼ 1.2), and this point is almost independent of the hydrogen fraction. It was found that hydrogen fraction decreases the emissions of CO, and HC and CO2. Adding 30% hydrogen reduced CO2 emission by 10.2% while 50% hydrogen fraction led to 22.7% CO2 reduction. |
Keywords | natural gas fueled engine; hydrogen enrichment; combustion duration; CO2 reduction |
ANZSRC Field of Research 2020 | 401703. Energy generation, conversion and storage (excl. chemical and electrical) |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Amirkabir University of Technology, Iran |
School of Mechanical and Electrical Engineering | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q316x/a-computational-study-of-operating-range-extension-in-a-natural-gas-si-engine-with-the-use-of-hydrogen
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