Multidimensional engine modeling: NO and soot emissions in a diesel engine with exhaust gas recirculation

被引：7

作者：

Kim, H ^{[1
]}

Sung, N

机构：

[1] Sungkyunkwan Univ, Grad Sch Mech Engn, Kyonggi Do 440746, South Korea

[2] Sungkyunkwan Univ, Sch Mech Engn, Kyonggi Do 440746, South Korea

来源：

KSME INTERNATIONAL JOURNAL | 2001年 / 15卷 / 08期

关键词：

multidimensional engine modeling; diesel engine; exhaust gas recirculation; NOx; soot;

D O I：

10.1007/BF03185100

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The effects of EGR(Exhaust Gas Recirculation) on heavy-duty diesel engine performance, NO and soot emissions were numerically investigated using the modified KIVA-3V code. For the fuel spray, the atomization model based on the linear stability analysis and spray wall impingement model were developed for the KIVA-3V code. The Zeldovich mechanism for the formation of nitric oxide and the soot model suggested by Hiroyasu et al. were used to predict the diesel emissions. In this paper, the computational results of fuel spray, cylinder pressure, and emissions were compared with experimental data, and the optimum EGR rates were sought from the NO and soot emissions trade-off. The results showed that the EGR is effective in suppressing NO but the soot emission was increased considerably by EGR. Using cooled EGR, soot emission could be enhanced without worsening of NO.

引用

页码：1196 / 1204

页数：9