Analysis of Combustion Instability for a Natural Gas Engine with Lean-burn Conditions
[1]DING Shunliang,GENG Haitang,GAO Jianshe,et al.Analysis of Combustion Instability for a Natural Gas Engine with Lean-burn Conditions[J].Journal of Zhengzhou University (Engineering Science),2024,45(05):45-51.[doi:10.13705/j.issn.1671-6833.2024.05.014]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
45
Number of periods:
2024 05
Page number:
45-51
Column:
Public date:
2024-08-08
- Title:
- Analysis of Combustion Instability for a Natural Gas Engine with Lean-burn Conditions
- CLC:
- TK464
- DOI:
- 10.13705/j.issn.1671-6833.2024.05.014
- Abstract:
- To study the variation law of combustion instability of natural gas engine with lean-burn condition,experiments were carried out on a natural gas engine with six different excess air coefficients with the condition of25% load and 1 000 r / min. The frequency distributions of pmax , θpmaxand IMEP were studied by statistical analysismethod, and the correlation between each combustion characteristic parameter was also analyzed. Results showedthat with the increase of λ, the combustion instability of natural gas engine enhanced and the frequency distributionranges of pmaxand θpmaxincreased gradually, while the frequency distribution range of IMEP initially decreased andthen increased, and the difference between combustion cycles increased. In each correlation diagram of combustioncharacteristic parameters, the distribution range of points becme wider, where existed a linear relationship. Whenthe mixture concentration became thinner, the linear relationship weakened. The reasons for the combustion instability of natural gas engine with lean-burn conditions were analyzed, providing a theoretical basis for the optimization and control of lean-burn combustion stability of natural gas engine.
- References:
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Last Update:
2024-09-02