Effects of CO2 from EGR on laminar combustion characteristics of hydrogen

Qian Huang; Hai Yan Miao; Zuo Hua Huang; De Ming Jiang; Ke Zeng

Effects of CO₂ from EGR on laminar combustion characteristics of hydrogen

Qian Huang, Hai Yan Miao, Zuo Hua Huang, De Ming Jiang, Ke Zeng

Research output: Contribution to journal › Article › peer-review

Abstract

Hydrogen-enriched hydrocarbon fuels are widely used in internal combustion engines, and exhaust gas recirculation is one of the most effective ways to decrease NO_x emission from internal combustion engines. In order to investigate the effect of CO₂ in exhaust gas on combustion characteristics of hydrocarbon fuels with hydrogen addition, the laminar combustion characteristics of hydrogen-air-CO₂ mixtures are studied at different equivalence ratios (φ=0.6-1.4) and different CO₂ diluent ratios (0%-40%). The results indicated that both flame propagation speed and the Markstein length of hydrogen-air mixtures increases with the increase of equivalence ratio. By increasing diluent ratio, the unstretched flame propagation speed Sl decreases obviously. The effects of diluent gas on flame stability are also discussed in this paper. A polynomial fit to the data from experiments is also obtained, which can be used to calculate the unstretched laminar burning velocity of hydrogen-air-CO₂ mixture.

Original language	English
Pages (from-to)	361-367
Number of pages	7
Journal	Ranshao Kexue Yu Jishu/Journal of Combustion Science and Technology
Volume	15
Issue number	4
Publication status	Published - 1 Aug 2009
Externally published	Yes

Cite this

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title = "Effects of CO2 from EGR on laminar combustion characteristics of hydrogen",

abstract = "Hydrogen-enriched hydrocarbon fuels are widely used in internal combustion engines, and exhaust gas recirculation is one of the most effective ways to decrease NOx emission from internal combustion engines. In order to investigate the effect of CO2 in exhaust gas on combustion characteristics of hydrocarbon fuels with hydrogen addition, the laminar combustion characteristics of hydrogen-air-CO2 mixtures are studied at different equivalence ratios (φ=0.6-1.4) and different CO2 diluent ratios (0%-40%). The results indicated that both flame propagation speed and the Markstein length of hydrogen-air mixtures increases with the increase of equivalence ratio. By increasing diluent ratio, the unstretched flame propagation speed Sl decreases obviously. The effects of diluent gas on flame stability are also discussed in this paper. A polynomial fit to the data from experiments is also obtained, which can be used to calculate the unstretched laminar burning velocity of hydrogen-air-CO2 mixture.",

keywords = "Constant volume combustion bomb, Diluent gas, Flame stability, Hydrogen, Laminar burning velocity",

author = "Qian Huang and Miao, {Hai Yan} and Huang, {Zuo Hua} and Jiang, {De Ming} and Ke Zeng",

year = "2009",

month = aug,

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language = "English",

volume = "15",

pages = "361--367",

journal = "Ranshao Kexue Yu Jishu/Journal of Combustion Science and Technology",

issn = "1006-8740",

publisher = "Tianjin Daxue/Tianjin University",

number = "4",

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TY - JOUR

T1 - Effects of CO2 from EGR on laminar combustion characteristics of hydrogen

AU - Huang, Qian

AU - Miao, Hai Yan

AU - Huang, Zuo Hua

AU - Jiang, De Ming

AU - Zeng, Ke

PY - 2009/8/1

Y1 - 2009/8/1

N2 - Hydrogen-enriched hydrocarbon fuels are widely used in internal combustion engines, and exhaust gas recirculation is one of the most effective ways to decrease NOx emission from internal combustion engines. In order to investigate the effect of CO2 in exhaust gas on combustion characteristics of hydrocarbon fuels with hydrogen addition, the laminar combustion characteristics of hydrogen-air-CO2 mixtures are studied at different equivalence ratios (φ=0.6-1.4) and different CO2 diluent ratios (0%-40%). The results indicated that both flame propagation speed and the Markstein length of hydrogen-air mixtures increases with the increase of equivalence ratio. By increasing diluent ratio, the unstretched flame propagation speed Sl decreases obviously. The effects of diluent gas on flame stability are also discussed in this paper. A polynomial fit to the data from experiments is also obtained, which can be used to calculate the unstretched laminar burning velocity of hydrogen-air-CO2 mixture.

AB - Hydrogen-enriched hydrocarbon fuels are widely used in internal combustion engines, and exhaust gas recirculation is one of the most effective ways to decrease NOx emission from internal combustion engines. In order to investigate the effect of CO2 in exhaust gas on combustion characteristics of hydrocarbon fuels with hydrogen addition, the laminar combustion characteristics of hydrogen-air-CO2 mixtures are studied at different equivalence ratios (φ=0.6-1.4) and different CO2 diluent ratios (0%-40%). The results indicated that both flame propagation speed and the Markstein length of hydrogen-air mixtures increases with the increase of equivalence ratio. By increasing diluent ratio, the unstretched flame propagation speed Sl decreases obviously. The effects of diluent gas on flame stability are also discussed in this paper. A polynomial fit to the data from experiments is also obtained, which can be used to calculate the unstretched laminar burning velocity of hydrogen-air-CO2 mixture.

KW - Constant volume combustion bomb

KW - Diluent gas

KW - Flame stability

KW - Hydrogen

KW - Laminar burning velocity

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M3 - Article

AN - SCOPUS:69849104111

VL - 15

SP - 361

EP - 367

JO - Ranshao Kexue Yu Jishu/Journal of Combustion Science and Technology

JF - Ranshao Kexue Yu Jishu/Journal of Combustion Science and Technology

SN - 1006-8740

IS - 4

ER -

Effects of CO₂ from EGR on laminar combustion characteristics of hydrogen

Abstract

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