汽车工程

汽车工程 ›› 2018, Vol. 40 ›› Issue (11): 1261-1266.doi: 10.19562/j.chinasae.qcgc.2018.011.002

• • 上一篇    下一篇

基于定容弹的天然气燃烧特性的试验研究*

吴重敏1,3, 李铁1,2, 邓康耀1,3   

  1. 1.上海交通大学高新船舶与深海开发装备协同创新中心,上海 200240;
    2.上海交通大学,海洋工程国家重点实验室,上海 200240;
    3.上海交通大学,动力机械及工程教育部重点实验室,上海 200240
  • 收稿日期:2017-09-27 出版日期:2018-11-25 发布日期:2018-11-25
  • 通讯作者: 吴重敏,博士研究生,E-mail:treeme_9@163.com
  • 基金资助:
    国家自然科学基金(91541104)和上海市政府间国际科技合作计划项目资助

An Experimental Study on CNG Combustion Characteristics Using CVB

Wu Chongmin1,3, Li Tie1,2, Deng Kangyao1,3   

  1. 1.Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai Jiaotong University, Shanghai 200240;
    2.Shanghai Jiaotong University, State Key Laboratory of Ocean Engineering, Shanghai 200240;
    3.Shanghai Jiaotong University, Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai 200240
  • Received:2017-09-27 Online:2018-11-25 Published:2018-11-25

PDF (PC)

584

赞

摘要： 天然气稀薄燃烧可提高燃烧效率,降低燃烧温度,研究影响天然气稀燃的控制参数非常重要。本文中基于纹影法在定容弹燃烧试验平台上,通过试验分析不同过量空气系数和不同点火能量对天然气燃烧的影响。结果表明:在相同的点火能量下,火焰传播速度随着过量空气系数增加而下降;在过量空气系数1.7的边界点,点火成功率随着点火能量的减小而降低,另外,从火焰传播的量化分析可以看出,较强的湍流流动能促进火焰传播速度的提高。

关键词: 压缩天然气, 定容弹, 点火能量, 过量空气系数, 火焰传播

Abstract: Lean burn of compressed natural gas (CNG) can improve its combustion efficiency and lower its combustion temperature, so it is very important to study the control parameters which affect the lean burn of CNG. In this paper, the effects of different air excess factors (AEFs) and different ignition energies on CNG combustion are analyzed by a constant volume bomb combustion test based on schlieren method. The results show that under the same ignition energy, flame propagation speed decreases as AEF increases, and at lean limit point (an AEF of 1.7), the success rate of ignition diminishes with the reduction of ignition energy. In addition, it can be seen from the quantitative analysis on flame propagation that the stronger turbulence can better promote the increase of flame propagation speed

Key words: CNG, constant volume bomb, ignition energy, air excess factor, flame propagation