| 混氢体积分数对汽油机性能影响的试验研究 |
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| 引用本文： | 汪硕峰,纪常伟,闫皓,张旻玥,刘洋,张擘.混氢体积分数对汽油机性能影响的试验研究[J].内燃机工程,2011,32(1). |
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| 作者姓名： | 汪硕峰 纪常伟 闫皓 张旻玥 刘洋 张擘 |
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| 作者单位： | 北京工业大学,环境与能源工程学院,北京,100124 |
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| 基金项目： | 北京市自然科学基金项目(3082004); 北京市教育委员会科研基地建设项目(0050005366901) |
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| 摘 要： | 在一台加装了电控氢气喷射系统的发动机上就过量空气系数为1.1时进气混氢体积分数对发动机性能的影响进行了试验研究。在发动机转速为1 400 r/min的条件下,调整了氢气的喷射脉宽,使氢气占进气的体积分数依次为01、%、3%4、.5%和6%。试验结果表明:混氢后发动机制动热效率升高,在混氢体积分数为6%时,发动机制动热效率比纯汽油机时平均提高14.53%;滞燃期与快速燃烧持续期缩短;缸压峰值增加,缸压峰值位置所对应的曲轴转角提前;发动机循环变动降低。在混氢体积分数较小时,CO排放随混氢比的增加而减少,但混氢体积分数为6%时的发动机CO排放有所升高;混氢后发动机HC排放减少,但NOx排放有所增加。
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| 关 键 词： | 内燃机 汽油机 氢气 燃烧 排放 |
Experimental Study on Effect of Hydrogen Addition Fraction on Performance of SI Gasoline Engine |
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| WANG Shuo-feng,JI Chang-wei,YAN Hao,ZHANG Min-yue,LIU Yang,ZHANG Bo.Experimental Study on Effect of Hydrogen Addition Fraction on Performance of SI Gasoline Engine[J].Chinese Internal Combustion Engine Engineering,2011,32(1). |
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| Authors: | WANG Shuo-feng JI Chang-wei YAN Hao ZHANG Min-yue LIU Yang ZHANG Bo |
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| Affiliation: | WANG Shuo-feng,JI Chang-wei,YAN Hao,ZHANG Min-yue,LIU Yang,ZHANG Bo(College of Environmental and Energy Engineering,Beijing University of Technology,Beijing 100124,China) |
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| Abstract: | Investigation on effects of hydrogen addition fraction on combustion and emission characteristics of SI gasoline engine was performed on a modified SI engine equipped with an electron-controlled hydrogen port-injection system,under the conditions of the excess air ratio of 1.1 and engine speed 1 400 r/min.The hydrogen volumetric fraction in the total intake air was gradually increased from 0 up to 6% by adding hydrogen injection pulse width.The experiment results demonstrate that the engine brake thermal ef... |
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| Keywords: | IC engine gasoline engine hydrogen combustion emission |
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