吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (3): 797-805.doi: 10.13229/j.cnki.jdxbgxb201503017

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Simulation study of lean combustion characteristic of direct injection CNG engine

HUANG Ya, LIN Xue-dong, LI De-gang, GU Jing-jing, HOU Yu-jing   

  1. State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022,China
  • Received:2014-05-26 Online:2015-05-01 Published:2015-05-01

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Abstract: This paper is focused on the effects of different injection and spark modes on the in-cylinder equivalence ratio, temperature field as well as the NO formation. The simulation process is based on the experiment on a direct injection Compressed Natural Gas (CNG) engine, which was observed with optical device. Results show that the in-cylinder equivalence ratio distribution, which can be controlled by the injection mode, is the key factor for lean combustion control. Moreover, the equivalence ratio distribution directly impacts the flame propagation and temperature field. The spark mode mainly influences the in-cylinder temperature filed, so that influences the NO formation. The higher the gradient of equivalence ratio distribution, the faster the flame propagation and the more stable the lean combustion. The double spark mode can effectively control the flame propagation speed.

Key words: power machinery engineering, DI-CNG engine, lean combustion, injection mode, spark mode, flame propagation mechanism, NOx formation

CLC Number: 

  • TK411
[1] Liu Y, Yeom J, Chung S. A study of spray development and combustion propagation processes of spark-ignited direct injection(SIDI) compressed natural gas (CNG)[J]. Mathematical and Computer Modelling,2013,57(1-2):228-244.
[2] Korakianitis T, Namasivayam A M, Crookes R J. Natural-gas fueled spark-ignition(SI) and compression-ignition(CI) engine performance and emissions[J]. Progress in Energy and Combustion Science,2011,37(1):89-112.
[3] 木戸口善行. 噴射制御による直接噴射式天然ガス内燃機関の希薄燃焼に関する研究[J]. 自動車技術会論文集, 2010, 41(4): 859-864.
[4] Imran S, Emberson D R, Diez A, et al. Natural gas fueled compression ignition engine performance and emissions maps with diesel and RME pilot fuels[J]. Applied Energy,2014,124:354-365.
[5] 焦运景,司鹏鵾,杨志勇,等. 气道形状对天然气发动机缸内气体流动与燃烧过程影响的研究[J]. 内燃机工程,2013,34(3):26-31.
Jiao Yun-jing, Si Peng-kun, Yang Zhi-yong, et al. Effect of intake port geometry on in-cylinder flow field and combustion in natural gas engine[J]. Chinese Internal Combustion Engine Engineering,2013,34(3):26-31.
[6] 胡春明,侯圣智,赵文锋,等. 低压缸内直喷CNG发动机燃烧特性的影响因素[J]. 燃烧科学与技术,2010,16(5): 446-451.
Hu Chun-ming, Hou Sheng-zhi, Zhao Wen-feng,et al. Influence factors of combustion characteristics of a low pressure direct injection CNG engine[J]. Journal of Combustion Science and Technology,2010,16(5):446-451.
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