Pressure loss of urea-SCR converter and its influence on diesel engine performance

被引：0
|
作者：
Xin Z. [1 ]
Wang S. [1 ]
Zhang Y. [1 ]
Li Z. [1 ]
Zhang Y. [1 ]
Yun F. [1 ]
机构：
[1] College of Engineering, China Agriculture University
[2] Department of Automotive Engineering, Tsinghua University
来源：
Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | 2011年 / 27卷 / 08期
关键词：
Back pressure; Catalytic converters; Diesel engines; Emission control; Performances; SCR; Simulations;
D O I：
10.3969/j.issn.1002-6819.2011.08.028
中图分类号：
学科分类号：
摘要：
Urea-SCR catalytic converter can effectively reduce the NOx emission of diesel engines, but meanwhile catalytic converter will cause some pressure loss in the exhaust system, which has negative influences on the engine performances. With the aid of BOOST (engine cycle simulation software) coupled with FIRE (computational fluid dynamic software), the pressure loss caused by converter was calculated and a modeling simulation and validity test were conducted on the power performance and fuel economy of diesel engine with urea-SCR catalyst. The results show that the pressure losses mainly come from the monolith resistance along the converter. The exhaust back pressure rising caused by SCR catalyst has some influence on the diesel fuel economy and power performance, which are reduced by about 5%. The results can provide a reference for optimum design of SCR catalytic converters and assembling.
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页码：169 / 173
页数：4
相关论文
共 15 条
  • [1] Van Helden R., Verbeek R., Willems F., Optimization of urea SCR deNOx systems for HD diesel engines, (2004)
  • [2] Dong H., Shuai S., Li R., Et al., State-of-the-art and development of diesel engine aftertreatment technologies, Small Internal Combusition Engine and Motorcycle, 36, 3, pp. 87-92, (2007)
  • [3] 1, pp. 13-14, (2008)
  • [4] Dong Y., Wu L., Liu Y., Et al., Considerations for realizing Euro IV for MD/HD vehicle diesel engines in China, Automobile Technology, 3, pp. 1-4, (2007)
  • [5] Tong D., Li G., Tao J., Design of SCR converter for heavy-duty diesel engine using CFD technology, Transactions of CSICE, 26, SUPPL., pp. 20-25, (2008)
  • [6] Maunula T., Lylykangas R., NO<sub>X</sub> reduction by urea in the presence of NO<sub>2</sub> on metal substraed SCR catalysts for heavy-duty vehicles, (2003)
  • [7] Chen M., Williams S., Modeling and optimization of SCR-exhaust aftertreatment system
  • [8] Wurzenberger J.C., Wanker R., Multi-scale SCR modeling, 1D kinetic analysis and 3D system simulation
  • [9] Zhang W., Shuai S., Dong H., Et al., 3D modeling of flow, spray of reductant and surface chemical reaction in diesel urea SCR-NOx catalytic converter, Transactions of CSICE, 25, 5, pp. 433-438, (2007)
  • [10] Shuai S., Wang J., Zhuang R., Pressure losses in automotive catalytic converters, J Tsinghua University (Sci & Tech), 41, 4, pp. 85-88, (2001)
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