| 摘要:提出了基于NOx-MAP的SCR闭环控制方法。详细介绍了SCR闭环控制系统的构成，NOx-MAP的建立以及SCR闭环控制策略。WHSC和WHTC排放试验结果表明:采用基于NOx-MAP的SCR闭环控制方法能有效降低NOx排放，同时可有效减少因不恰当的尿素喷射导致的NH3逃逸,从而使车用柴油机NOx排放满足国六标准。 |
| 关键词: 柴油机 SCR NOx 闭环控制 |
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| A Study on the Closed-Loop Control Method for SCRBased on NOx-MAP to Reduce NOx Emission |
| Wen Renlin,Wen Yunjie |
| Wuxi Weifu Lida Catalytic Converter Co., Ltd.，Jiangsu Wuxi 214177;School of Chemistry and Chemical Engineering ,Nanjing University，Jiangsu Nanjing 210023 |
| Abstract:The closed-loop control method for SCR which based on NOx-MAP is presented. The constitution of the closed-loop control system for SCR, the creation of NOx-MAP and the strategy of closed-loop control are described in detail. The results of WHSC and WHTC emission experiments indicate that this method of closed-loop control based on NOx-MAP could effectively reduce NOx from engines as well as NH3 escape caused by incorrect urea injection, therefore it makes the NOx emissions of vehicle engines satisfied with China Ⅵ Phase standard. |
| Key words: diesel engine SCR NOx closed-loop control |
