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Position: Home > Articles > Effect of Hydrogen Enrichment on the Performance of a Lean-burn Gasoline Engine at Idle Transactions of the Chinese Society for Agricultural Machinery 2010,41 (7) 1-5+14

混氢对稀燃汽油机怠速性能的影响试验

作者：

汪硕峰;纪常伟;张擘;张旻玥;罗建斌;范伯元

单位：

北京工业大学环境与能源工程学院

关键词：

汽油机;氢气;稀燃;怠速;燃烧;排放

摘要：

在一台安装了氢气电控喷射系统的汽油机上,通过调整喷氢脉宽,研究了氢气占进气体积分数为3%时混氢对稀燃汽油机怠速燃烧与排放性能的影响。试验结果表明,混氢后发动机指示热效率提高;火焰发展期与快速燃烧持续期缩短;过量空气系数为1.3时,平均指示有效压力的循环变动系数由原机的33.9%降低至混氢后的13.7%;稀燃条件下,进气混氢有利于改善汽油机怠速时的HC、CO与NOx排放。

译名：

Effect of Hydrogen Enrichment on the Performance of a Lean-burn Gasoline Engine at Idle

作者：

Wang Shuofeng Ji Changwei Zhang Bo Zhang Minyue Luo Jianbin Fan Boyuan(College of Environmental and Energy Engineering,Beijing University of Technology,Beijing 100124,China)

关键词：

Gasoline engines,Hydrogen,Lean combustion,Idle,Combustion,Emissions

摘要：

In view of high cyclic variation and HC emissions of the lean-burn gasoline engine at idle conditions,an experimental investigation was carried out on a gasoline engine equipped with an electrical controlled hydrogen injection system.The hydrogen volume fraction in the total intake of 3% was adopted through adjusting hydrogen injection duration to study the effect of hydrogen enrichment on combustion and emission characteristics of a lean-burn gasoline engine at idle.The test results demonstrated that the indicated thermal efficiency was improved;flame development period and rapid burning duration were shortened after hydrogen enrichment.When the excess air ratio was 1.3,the coefficient of variation in indicated mean effective pressure was dropped from 33.9% of the original engine to 13.7% of the 3% hydrogen-enriched engine.Under idle and lean conditions,the addition of hydrogen was effective on improving HC,CO and NOx emissions performance of the SI engine.

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混氢对稀燃汽油机怠速性能的影响试验

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