| 集成式SCR催化转化消声器性能研究 |
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| 引用本文： | 陈镇,陆国栋,赵彦光,华伦,胡静,帅石金.集成式SCR催化转化消声器性能研究[J].车用发动机,2011(4):48-51. |
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| 作者姓名： | 陈镇 陆国栋 赵彦光 华伦 胡静 帅石金 |
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| 作者单位： | 1. 杭州银轮科技有限公司,浙江杭州,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： | 运用GT-Power软件对两种不同结构的集成式SCR催化转化消声器进行了声学性能模拟,通过试验研究对比分析了集成式SCR催化转化消声器的压力损失及其NOx转化效率。结果表明:在增加穿孔管后集成式SCR催化转化消声器的消声效果在400~750 Hz区间内受到了削弱,在750~1 000 Hz区间内增强,增加穿孔管后压力损失增加。在绝大部分工况下,增加穿孔管后SCR催化转化消声器的NOx转化效率要明显高于无穿孔管的结构。
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| 关 键 词： | 选择性催化还原 排气消声器 声学性能 压力损失 氮氧化物 转化效率 |
Performance of Integrated SCR Conversion Muffler |
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| CHEN Zhen,LU Guo-dong,ZHAO Yan-guang,HUA Lun,HU Jing,SHUAI Shi-jin.Performance of Integrated SCR Conversion Muffler[J].Vehicle Engine,2011(4):48-51. |
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| Authors: | CHEN Zhen LU Guo-dong ZHAO Yan-guang HUA Lun HU Jing SHUAI Shi-jin |
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| Institution: | 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 acoustic performance of different structural integrated SCR conversion mufflers was simulated using GT—Power software.The pressure loss and NOx conversion efficiency between different SCR conversion mufflers were compared by the experiment.The results show that the noise weakens at 400-750 Hz and strengthens at 750-1 000 Hz after adding perforated pipe in integrated SCR conversion muffler.Besides,the pressure loss increases.Under most conditions,the NOx conversion efficiency of SCR conversion muffler with perforated pipe is higher than that without perforated pipe. |
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| Keywords: | selective catalytic reduction(SCR) exhaust muffler acoustic performance pressure loss nitrogen oxide conversion efficiency |
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