| 内部EGR在增压柴油机的应用研究 |
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| 引用本文： | 李文祥,葛蕴珊,刘金玉,胡芳.内部EGR在增压柴油机的应用研究[J].内燃机工程,2006,27(6):43-46. |
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| 作者姓名： | 李文祥 葛蕴珊 刘金玉 胡芳 |
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| 作者单位： | 1. 北京理工大学,机械与车辆工程学院,北京,100081
2. 一汽技术中心 |
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| 摘 要： | 以CA6DF3—24柴油机为研究对象，提出了3种能够实现内部EGR的结构设计方案，利用GT—POWER软件建立了上述结构的仿真模型，模拟研究了3种结构能够达到的EGR率、NOx排放和油耗率特性。根据模拟计算结果从上述方案中优选出在排气凸轮上增加一个小凸轮，使排气门二次开启的最优设计方案。最后通过发动机试验研究了内部EGR对柴油机动力性、经济性和排放性能的影响。试验结果表明：内部EGR可有效降低柴油机的NOx排放量，但对排气烟度产生不利影响。
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| 关 键 词： | 内燃机 排放 废气再循环 |
| 文章编号： | 1000-0925（2006）06-043-04 |
| 收稿时间： | 09 27 2005 12:00AM |
| 修稿时间： | 2005-09-27 |
Research on Application of Internal EGR to Turbo-Diesel Engines |
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| LI Wen-xiang,GE Yun-shan,LIU Jin-yu,HU Fang.Research on Application of Internal EGR to Turbo-Diesel Engines[J].Chinese Internal Combustion Engine Engineering,2006,27(6):43-46. |
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| Authors: | LI Wen-xiang GE Yun-shan LIU Jin-yu HU Fang |
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| Abstract: | This paper presented three structure design schemes which could realize internal EGR for CA6DF3-24 diesel engine. The work built three models using GT-POWER software and analyzed the results of EGR rate, NOx emission and BSFC. According to the calculation results, the optimum scheme is to append a little cam for the exhaust cam which can make the exhaust valve reopen. At last, the researches focused on the influence of internal EGR on the power, economy and emission of the engine through the engine test rig. The results show that the internal EGR can effectively decrease NOx emission. On the contrary, it makes the penalty on the exhaust smoke. |
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| Keywords: | NOx |
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