Characteristics and mechanism of NOx emission of hydrogen fueled internal combustion engine
In order to deeply study the NOx formation mechanism of hydrogen fueled internal combustion engine (HICE), a hydrogen fueled internal combustion engine CFD simulation model including three-dimensional gridding coupling detailed chemical reaction mechanism is built based on CONVERGE software, and the...
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Hebei University of Science and Technology
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doaj-6843ec09fc144adfacb568563a1796692020-11-25T01:59:21ZzhoHebei University of Science and TechnologyJournal of Hebei University of Science and Technology1008-15422017-12-0138653053510.7535/hbkd.2017yx06004b201706004Characteristics and mechanism of NOx emission of hydrogen fueled internal combustion engineHairong ZHU0Zewei GENG1Qinggang LIU2Peiying PENG3School of Mechanical Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei 050018, ChinaSchool of Mechanical Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei 050018, ChinaSchool of Mechanical Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei 050018, ChinaSchool of Mechanical Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei 050018, ChinaIn order to deeply study the NOx formation mechanism of hydrogen fueled internal combustion engine (HICE), a hydrogen fueled internal combustion engine CFD simulation model including three-dimensional gridding coupling detailed chemical reaction mechanism is built based on CONVERGE software, and the combustion and emission characteristics of hydrogen fueled internal combustion engine under different loads are researched. The simulation result is consistent with the experimental data. The simulation results show that the increasing concentration of hydrogen is beneficial to improving the efficiency of hydrogen fuel internal combustion engine. The large amount of NO generates in the rapid combustion period, the total amount of NO decreases constantly after the rapid combustion period, and the total amount of NO tends to be stable when the average temperature is below 2 200 K. NO is generated mainly through three paths including thermo NO, NNH and N2O, and the thermo NO path contributes a large proportion of total NO emissions, whose contribution ratio increases with the increase of fuel-air equivalence ratio. NNH and N2O contribute about 25% of total NO emissions at lower concentrations, while when fuel-air equivalence ratio is 1.0, the sum of the contributions of these two paths to NO generation is negative. The contribution ratios for NO generation of three paths under different loads are obtained using chemical reaction kinetics method, which can reveal the NOx generation mechanism of hydrogen fuel internal combustion engine and establish the theoretical foundation for subsequent study.http://xuebao.hebust.edu.cn/hbkjdx/ch/reader/create_pdf.aspx?file_no=b201706004&flag=1&journal_internal combustion engine engineeringhydrogen fueled internal combustion enginedetailed mechanismNOx emissionreaction pathcontribution ratio |
collection |
DOAJ |
language |
zho |
format |
Article |
sources |
DOAJ |
author |
Hairong ZHU Zewei GENG Qinggang LIU Peiying PENG |
spellingShingle |
Hairong ZHU Zewei GENG Qinggang LIU Peiying PENG Characteristics and mechanism of NOx emission of hydrogen fueled internal combustion engine Journal of Hebei University of Science and Technology internal combustion engine engineering hydrogen fueled internal combustion engine detailed mechanism NOx emission reaction path contribution ratio |
author_facet |
Hairong ZHU Zewei GENG Qinggang LIU Peiying PENG |
author_sort |
Hairong ZHU |
title |
Characteristics and mechanism of NOx emission of hydrogen fueled internal combustion engine |
title_short |
Characteristics and mechanism of NOx emission of hydrogen fueled internal combustion engine |
title_full |
Characteristics and mechanism of NOx emission of hydrogen fueled internal combustion engine |
title_fullStr |
Characteristics and mechanism of NOx emission of hydrogen fueled internal combustion engine |
title_full_unstemmed |
Characteristics and mechanism of NOx emission of hydrogen fueled internal combustion engine |
title_sort |
characteristics and mechanism of nox emission of hydrogen fueled internal combustion engine |
publisher |
Hebei University of Science and Technology |
series |
Journal of Hebei University of Science and Technology |
issn |
1008-1542 |
publishDate |
2017-12-01 |
description |
In order to deeply study the NOx formation mechanism of hydrogen fueled internal combustion engine (HICE), a hydrogen fueled internal combustion engine CFD simulation model including three-dimensional gridding coupling detailed chemical reaction mechanism is built based on CONVERGE software, and the combustion and emission characteristics of hydrogen fueled internal combustion engine under different loads are researched. The simulation result is consistent with the experimental data. The simulation results show that the increasing concentration of hydrogen is beneficial to improving the efficiency of hydrogen fuel internal combustion engine. The large amount of NO generates in the rapid combustion period, the total amount of NO decreases constantly after the rapid combustion period, and the total amount of NO tends to be stable when the average temperature is below 2 200 K. NO is generated mainly through three paths including thermo NO, NNH and N2O, and the thermo NO path contributes a large proportion of total NO emissions, whose contribution ratio increases with the increase of fuel-air equivalence ratio. NNH and N2O contribute about 25% of total NO emissions at lower concentrations, while when fuel-air equivalence ratio is 1.0, the sum of the contributions of these two paths to NO generation is negative. The contribution ratios for NO generation of three paths under different loads are obtained using chemical reaction kinetics method, which can reveal the NOx generation mechanism of hydrogen fuel internal combustion engine and establish the theoretical foundation for subsequent study. |
topic |
internal combustion engine engineering hydrogen fueled internal combustion engine detailed mechanism NOx emission reaction path contribution ratio |
url |
http://xuebao.hebust.edu.cn/hbkjdx/ch/reader/create_pdf.aspx?file_no=b201706004&flag=1&journal_ |
work_keys_str_mv |
AT hairongzhu characteristicsandmechanismofnoxemissionofhydrogenfueledinternalcombustionengine AT zeweigeng characteristicsandmechanismofnoxemissionofhydrogenfueledinternalcombustionengine AT qinggangliu characteristicsandmechanismofnoxemissionofhydrogenfueledinternalcombustionengine AT peiyingpeng characteristicsandmechanismofnoxemissionofhydrogenfueledinternalcombustionengine |
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