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| 高比率冷EGR与进气富氧对柴油机燃烧及排放特性的影响 | |
| 引用本文： | 张韦,舒歌群,韩睿,张祚,毕克刚.高比率冷EGR与进气富氧对柴油机燃烧及排放特性的影响[J].内燃机工程,2011,32(4). |
| 作者姓名： | 张韦 舒歌群 韩睿 张祚 毕克刚 |
| 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;昆明理工大学交通工程学院,昆明300024 2. 天津大学内燃机燃烧学国家重点实验室,天津,300072 3. 昆明理工大学交通工程学院,昆明,300024 |
| 基金项目： | 国家自然科学基金资助项目(50976077) |
| 摘 要： | 对普通增压中冷柴油机,采用富氧进气与高比率冷EGR相结合的技术,实现缸内富氧燃烧。未经优化的情况下使用富氧燃烧,NO排放随氧浓度的上升而大幅增加。富氧进气与高比率冷EGR相结合,可以显著降低碳烟的排放并抑制NO的过度增长,同时保证发动机的燃烧热效率和输出功率不降低。将不同浓度的氧气、EGR废气及空气三者充分混合,冷却后引入气缸参与燃烧;调整掺氧浓度和EGR率,考察发动机在各种掺比下的燃烧及排放特性。试验结果表明:在1 600 r/min全负荷工况,进气内通入20%~30%的EGR废气及23%的氧气,可有效抑制NO及碳烟排放,并能保证发动机具有良好的动力性。 |
| 关 键 词： | 内燃机 柴油机 冷EGR 富氧进气 燃烧特性 排放特性 |
Influence of High-Rate Cold EGR & Oxygen-Enriched Intake on Diesel Engine Combustion and Emission Characteristics |
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| ZHANG Wei,SHU Ge-qun,HAN Rui,ZHANG Zuo,BI Ke-gang.Influence of High-Rate Cold EGR & Oxygen-Enriched Intake on Diesel Engine Combustion and Emission Characteristics[J].Chinese Internal Combustion Engine Engineering,2011,32(4). | |
| Authors: | ZHANG Wei SHU Ge-qun HAN Rui ZHANG Zuo BI Ke-gang |
| Affiliation: | ZHANG Wei1,2,SHU Ge-qun1,HAN Rui1,ZHANG Zuo1,BI Ke-gang2(1.State Key Laboratory of Engines,Tianjin University,Tianjin 300072,China,2.Faculty of Transportation Engineering,Kunming University of Science and Technology,Kunming 300024,China) |
| Abstract: | The combustion and emissions in a commercial turbocharged inter-cooled diesel engine using oxygen-enriched intake air combined with ultra-high rate cold EGR were investigated.It is found that while oxygen-enriched combustion,NOx emissions increase greatly(under non-optimized condition) with O2 concentration increasing,and the oxygen-enriched intake combined with high-rate cold EGR can decrease obviously smoke and restrain NOx excessive rising,achieving high combustion efficiency and power output.The combust... |
| Keywords: | IC engine diesel engine cold EGR oxygen-enriched intake: combustion characteristics emission characteristics |
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