| 混氢对怠速工况发动机循环变动和排放的影响 |
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| 引用本文： | 汪硕峰,纪常伟,闫皓,张擘,刘洋. 混氢对怠速工况发动机循环变动和排放的影响[J]. 内燃机学报, 2010, 0(1) |
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| 作者姓名： | 汪硕峰 纪常伟 闫皓 张擘 刘洋 |
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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： | 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： | 针对汽油机怠速时循环变动大、排放高的问题,在一台加装了电控氢气喷射系统的1.6L汽油机上就混氢对发动机怠速性能的影响进行了试验研究。在怠速条件下,通过自主开发的电子控制单元调整氢气与汽油的喷射脉宽,使进气中混氢体积分数从0%逐渐增加至6.52%,同时减少汽油的喷射脉宽,以保证混氢后发动机仍工作在理论过量空气系数条件下。试验结果表明,混氢后发动机火焰发展期和快速传播期缩短;平均指示有效压力的循环变动系数由原机的9.97%减少至混氢体积分数为6.52%时的4.93%。NOx排放随混氢分数增加而减少;在混氢体积分数小于4.88%时,HC与CO随混氢比的增加而减少,但当混氢分数大于4.88%时,HC与CO排放再次升高。
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| 关 键 词： | 汽油机 氢气 怠速 循环变动 燃烧 排放 |
Effect of Hydrogen Addition on Cyclic Variation and Emissions of a Spark Ignition Gasoline Engine at Idle Condition |
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| WANG Shuo-feng,JI Chang-wei,YAN Hao,ZHANG Bo,LIU Yang. Effect of Hydrogen Addition on Cyclic Variation and Emissions of a Spark Ignition Gasoline Engine at Idle Condition[J]. Transactions of Csice, 2010, 0(1) |
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| Authors: | WANG Shuo-feng JI Chang-wei YAN Hao ZHANG Bo LIU Yang |
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| Affiliation: | College of Environmental and Energy Engineering/a>;Beijing University of Technology/a>;Beijing 100124/a>;China |
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| Abstract: | Concerning the high cyclic variations and emissions of spark ignition (SI) engines at idle,this paper experimentally investigated the effect of hydrogen addition to a gasoline fueled SI engine on improving its idle performance.The experiment was performed on a modified 1.6 L SI engine equipped with an electronically controlled hydrogen port-injection system.The injection duration and timing of hydrogen and gasoline were governed by a self-developed electronic control unit.The hydrogen volumetric fraction in... |
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| Keywords: | Spark ignition enigne Hydrogen Idle Cyclic variations Combustion Emissions |
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