| 废气再循环对车用柴油机性能与排放的影响 |
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| 引用本文： | 朱昌吉,刘忠长,许允,张振东. 废气再循环对车用柴油机性能与排放的影响[J]. 汽车工程, 2004, 26(2): 145-148 |
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| 作者姓名： | 朱昌吉 刘忠长 许允 张振东 |
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| 作者单位： | 1. 吉林大学汽车工程学院,长春,130022
2. 上海理工大学机械学院,上海,200093 |
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| 基金项目： | 国家重点基础研究发展规划项目 (2 0 0 1CB2 0 92 0 1 ) |
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| 摘 要： | 为了降低车用柴油机的NOx排放，研究了不同工况下EGR率对柴油机性能的影响。试验结果表明，采用EGR可以有效地降低NOx排放。大负荷比小负荷效果显著，但微粒的排放有所增加。小负荷采用EGR时可以改善发动机的燃烧，微粒排放基本没有变化。空燃比是影响微粒排放的关键因素，小负荷宜采用大EGR率，大负荷时宜采用小EGR率，以求在控制NOx排放降低的同时，总的微粒排放不至增加过多。
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| 关 键 词： | 车用柴油机 NOx排放 废气再循环 排放控制 EGR |
Effects of EGR on Performances and Emissions of an Automotive Diesel Engine |
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| Zhu Changji,Liu Zhongchang , Xu Yun College of Automotive Engineering,Jilin University,Changchun Zhang Zhendong College of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai. Effects of EGR on Performances and Emissions of an Automotive Diesel Engine[J]. Automotive Engineering, 2004, 26(2): 145-148 |
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| Authors: | Zhu Changji Liu Zhongchang & Xu Yun College of Automotive Engineering Jilin University Changchun Zhang Zhendong College of Mechanical Engineering University of Shanghai for Science Technology Shanghai |
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| Affiliation: | Zhu Changji,Liu Zhongchang & Xu Yun College of Automotive Engineering,Jilin University,Changchun 130025 Zhang Zhendong College of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093 |
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| Abstract: | For reducing NOx emission of an engine,the effects of EGR ratio on performances of diesel engine under different operating conditions were studied The test results showed that the NOx emission was reduced when using EGR The NOx reduction under heavy loads was much more remarkable than that under light load while PM emission increased Under light load, combustion could be improved when adopting EGR while the PM emission almost had no obvious increase It is advisable to adopt high EGR ratio for light load and low EGR ratio for heavy load, thus the total PM emission would not increase too much while reducing the NOx emission |
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| Keywords: | Exhaust emission EGR Diesel engine |
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