| 混氢改善汽油机稀燃性能的试验研究 |
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| 引用本文： | 汪硕峰,纪常伟,张擘,朱永明,张旻玥.混氢改善汽油机稀燃性能的试验研究[J].工程热物理学报,2010(12). |
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| 作者姓名： | 汪硕峰 纪常伟 张擘 朱永明 张旻玥 |
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| 作者单位： | 北京工业大学环境与能源工程学院; |
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| 基金项目： | 国家自然科学基金(No.50976005) |
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| 摘 要： | 针对汽油机稀燃条件下循环变动大,燃料燃烧不充分的问题,本文在一台加装了电控氢气喷射系统的四缸汽油机上就混氢对改善汽油机稀燃条件下燃烧与排放性能的作用进行了试验研究。在发动机1400r/min,进气道绝对压力为61.5 kPa的条件下,就1%与3%两种进气混氢体积分数对稀燃汽油机燃烧与排放特性的影响进行了研究。试验结果表明,稀燃时发动机制动热效率随混氢分数增加而提高;滞燃期与速燃期随混氢分数增加而缩短;发动机稀燃极限所对应的过量空气系数由原机的1.45提高至混氢1%与3%时的1.55和1.96。混氢后发动机HC与CO排放降低,但NO_x排放有所升高。
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| 关 键 词： | 氢气 汽油 燃烧 稀燃极限 排放 |
EXPERIMENTAL STUDY ON IMPROVING GASOLINE ENGINE LEAN OPERATING PERFORMANCE WITH HYDROGEN ADDITION |
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| WANG Shuo-Feng JI Chang-Wei ZHANG Bo ZHU Yong-Ming ZHANG Min-Yue.EXPERIMENTAL STUDY ON IMPROVING GASOLINE ENGINE LEAN OPERATING PERFORMANCE WITH HYDROGEN ADDITION[J].Journal of Engineering Thermophysics,2010(12). |
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| Authors: | WANG Shuo-Feng JI Chang-Wei ZHANG Bo ZHU Yong-Ming ZHANG Min-Yue |
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| Institution: | WANG Shuo-Feng JI Chang-Wei ZHANG Bo ZHU Yong-Ming ZHANG Min-Yue (College of Environmental and Energy Engineering,Beijing University of Technology,Beijing 100124,China) |
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| Abstract: | In view of the high cyclic variation and partial combustion of gasoline-fueled spark ignition(SI) engines under lean conditions,this paper investigated the effect of hydrogen addition to a gasoline-fueled SI engine on improving its lean combustion and emissions performance.The experiment was performed on a modified four-cylinder SI engine equipped with an electronically controlled hydrogen injection system.The engine was operated at 1400 r/min,and a manifold absolute pressure(MAP) of 61.5 kPa.Two hydrogen v... |
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| Keywords: | hydrogen gasoline combustion lean operating limit emissions |
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