Experimental Study on Engine Performance and Emissions Fuelled with CNG-Hydrogen Blends Combined with EGR

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Experimental Study on Engine Performance and Emissions Fuelled with CNG-Hydrogen Blends Combined with EGR

更新时间：2025-07-09

- Experimental Study on Engine Performance and Emissions Fuelled with CNG-Hydrogen Blends Combined with EGR
- Vol. 43, Issue 5, Pages: 18-21+35(2009)
- 作者机构：
  
  西安交通大学动力工程多相流国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK429
- Online First：10 May 2009，
  
  Published：2009
- 稿件说明：
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Experimental Study on Engine Performance and Emissions Fuelled with CNG-Hydrogen Blends Combined with EGR[J]. 2009, 43(5): 18-21+35.
DOI：

Experimental Study on Engine Performance and Emissions Fuelled with CNG-Hydrogen Blends Combined with EGR[J]. 2009, 43(5): 18-21+35. DOI：

摘要

在一台火花点火天然气发动机上开展了不同掺氢比φ(H

)和废气再循环率φ下发动机性能和排放的实验研究.研究结果表明:引入废气再循环(EGR)会使发动机功率降低

但掺氢可以提高大φ值工况下的发动机功率.有效燃油消耗率随φ 的增大呈现先减小后增大的趋势

在φ为5%时达到最低

有效燃油消耗率随φ(H

)的增大而降低.天然气掺氢后NO

排放增加

引入EGR使NO

排放得到降低

此降低效果在大掺氢比情况下更为显著.在φ较大时

天然气掺氢具有较好的效果.HC和CO排放随φ 的增大而增加

随φ(H

)的增大而降低.当φ为 10%、φ(H

)为20%时

发动机可获得较好的综合性能.

Abstract

An experimental study on the performance and emissions of a spark ignition engine with natural gas-hydrogen blends combined with EGR was conducted. The results show that the engine power output decreased with the increase of exhaust gas recirculation ratio(φ)

and hydrogen enrichment at a considerable φ could improve the engine power output. Brake specific fuel consumption decreased first and then increased with the increase of φ

and its value was minimum when φ=5%. Brake specific fuel consumption decreased with the increase of hydrogen fraction. For a specified hydrogen fraction

concentration decreased with the increase of φ

which was more obvious at high hydrogen fractions. HC and CO emissions increased with the increase of φ and decreased with the increase of hydrogen fraction. The highe

r performance and the lower emissions of the engine could be obtained when φ(H

)=20% and φ=10%.

关键词

Keywords

references

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ALLENBY S, CHANG W C, MEGRITIS A, et al. Hydrogen enrichment: a way to maintain combustion stability in a natural gas fuelled engine with exhaust gas recirculation, the potential of fuel reforming [J]. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 2001,215(3):405-418.

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