| 集成式SCR催化转化消声器的数值模拟和试验研究 |
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| 引用本文： | 陈镇,陆国栋,周小燕,赵彦光,华伦,帅石金.集成式SCR催化转化消声器的数值模拟和试验研究[J].拖拉机与农用运输车,2011,38(4):49-52. |
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| 作者姓名： | 陈镇 陆国栋 周小燕 赵彦光 华伦 帅石金 |
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| 作者单位： | 1. 杭州银轮科技有限公司,杭州,310013
2. 清华大学汽车安全与节能国家重点实验室,北京,100084 |
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| 摘 要： | 通过数值模拟和试验对比研究了某款集成式SCR催化转化消声器采用不同穿孔管位置布置形式对SCR催化转化消声器的压力损失、速度场分布及其NOx转化效率的影响。结果表明:穿孔管孔部分朝向SCR载体的穿孔管造成的压力损失比较小,且SCR前端面速度场分布也更加均匀;穿孔管不同位置布置对SCR的NOx转化效率有明显影响,在某些工况下,差异在10%以上。
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| 关 键 词： | 穿孔管 尿素SCR系统 压力损失 NOx转化效率 |
Numerical Simulation and Experimental Study of SCR Convertor Muffler Assembly |
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| CHEN Zhen,LU Guo-dong,ZHOU Xiao-yan,ZHAO Yan-guang,HUA Lun,SHUAI Shi-jin.Numerical Simulation and Experimental Study of SCR Convertor Muffler Assembly[J].Tractor & Farm Transporter,2011,38(4):49-52. |
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| Authors: | CHEN Zhen LU Guo-dong ZHOU Xiao-yan ZHAO Yan-guang HUA Lun SHUAI Shi-jin |
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| Institution: | CHEN Zhen1,LU Guo-dong1,ZHOU Xiao-yan1,ZHAO Yan-guang2,HUA Lun2,SHUAI Shi-jin2(1.Hangzhou Yinlun Technology & Engineering Co.,Ltd.,Hangzhou 310013,China,2.State Key Lab of Automotive Safety and Energy,Tsinghua University,Beijing 100084,China) |
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| Abstract: | The influence of mounting position of the perforated pipes on the pressure loss,velocity distribution and NOx conversion efficiency of the SCR convertor muffler assembly was studied through numerical simulation and experiment.The results show that,the pressure loss caused by the perforated pipe with holes facing the SCR substrate is low.The mounting position of the perforated pipes has a significant effect on NOx conversion efficiency of SCR convertor muffler assembly.The difference of NOx conversion efficiency is above 10 percent between some operating conditions. |
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| Keywords: | Perforated pipe Urea SCR（Selective Catalytic Reduction） system Pressure loss NOx conversion efficiency |
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