| 进气中氮气的体积分数对柴油机着火与燃烧影响的研究 |
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| 引用本文： | 姚春德,高昌卿,刘增勇,何邦全,孙家峰.进气中氮气的体积分数对柴油机着火与燃烧影响的研究[J].热科学与技术,2002,1(2):133-137. |
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| 作者姓名： | 姚春德 高昌卿 刘增勇 何邦全 孙家峰 |
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| 作者单位： | 1. 天津大学,内燃机燃烧学国家重点实验室,天津,300072
2. 清华大学,北京,100082 |
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| 基金项目： | 国家教育部重点基金资助 |
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| 摘 要： | 在一台可以拍摄缸内混合气形成和燃烧过程的发动机上，用高速摄像机研究了在进气加入不同体积分数的N2后柴油机的油束发展，混合气形成，着火以及燃烧过程，同时还采用了三基色法对高速摄像机拍摄出的燃烧火焰的照片进行了温度场分布的计算分析，拍摄的图像和计算结果表明，加入N2后，对燃油束的喷雾及混合气体形成过程没有影响，对着火滞燃期的影响也不大，但对火焰的燃烧最高温度和燃烧室的平均温度影响很大，N2的加入量越大，燃烧温度下降越多，燃烧过程的结束也就越早。
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| 关 键 词： | 氮气 体积分数 柴油机 着火 燃烧 三基色温度分析法 火焰传播 燃烧温度 |
| 文章编号： | 1671-8097(2002)02-0133-05 |
| 修稿时间： | 2001年6月11日 |
Study on the effect of volumetric percentage of N2 in intake air on ignition and combustion of diesel engine |
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| YAO Chun\|de ,\ GAO Chang\|qing ,LIU Zeng\|yong ,HE Bang\|quan ,SUN Jia\|feng.Study on the effect of volumetric percentage of N2 in intake air on ignition and combustion of diesel engine[J].Journal of Thermal Science and Technology,2002,1(2):133-137. |
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| Authors: | YAO Chun\|de \ GAO Chang\|qing LIU Zeng\|yong HE Bang\|quan SUN Jia\|feng |
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| Affiliation: | YAO Chun\|de 1,\ GAO Chang\|qing 1,LIU Zeng\|yong 2,HE Bang\|quan 2,SUN Jia\|feng 1 |
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| Abstract: | Effects of different concentration of N 2 in charging air on the mixing and combustion process were investigated on a single\|cylinder 1.04L direct\|injection optical diesel engine in terms of the spray development, fuel and air mixing, ignition and flame development by high speed CCD technology. Analysis of these images obtained by the three basic\|color temperature analysis method revealed that the different concentration of N 2 did not affect fuel spray developing and fuel/air mixing, but delayed the ignition delay period and had remarkable influence on the maximum combustion temperature as well as the average temperature. The experimental results also showed that the more of N 2 in the charging, the worse of burning stability. |
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| Keywords: | nitrogen diesel engine combustion |
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