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The state of the art in selective catalytic reduction control

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conference contribution
posted on 29.04.2015, 09:15 by Zakwan Skaf, Timur Aliyev, Leo Shead, Thomas SteffenThomas Steffen
Selective Catalytic Reduction (SCR) is a leading after treatment technology for the removal of nitrogen oxide (NOx) from exhaust gases (DeNOx). It presents an interesting control challenge, especially at high conversion, because both reagents (NOx and ammonia) are toxic, and therefore an excess of either is highly undesirable. Numerous system layouts and control methods have been developed for SCR systems, driven by the need to meet future emission standards. This paper summarizes the current state-of-the-art control methods for the SCR aftertreatment systems, and provides a structured and comprehensive overview of the research on SCR control. The existing control techniques fall into three main categories: traditional SCR control methods, model-based SCR control methods, and advanced SCR control methods. For each category, the basic control technique is defined. Further techniques in the same category are then explained and appreciated for their relative advantages and disadvantages. Thus this paper presents a snapshot of the current state of the art for the research area of SCR control. This is a very active field, and it is hoped that by providing a better understanding of the different control strategies already developed for SCR control, future areas of interest will be identified and developed with the ultimate aim of satisfying the increasingly stringent emissions legislation. Copyright © 2014 SAE International.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

SAE Technical Papers

Citation

SKAF, Z. ... et al, 2014. The state of the art in selective catalytic reduction control. Presented at: SAE 2014 World Congress and Exhibition, 8th-10th April 2014, Detroit, USA. Paper 2014-01-1533

Publisher

© SAE International

Version

AM (Accepted Manuscript)

Publisher statement

Copyright © 2014 SAE International. This paper is posted on this site with permission from SAE International. It may not be shared, downloaded, transmitted in any manner, or stored on any additional repositories or retrieval system without prior written permission from SAE.

Publication date

2014

Notes

Copyright © 2014 SAE International. This paper is posted on this site with permission from SAE International. It may not be shared, downloaded, transmitted in any manner, or stored on any additional repositories or retrieval system without prior written permission from SAE.

Book series

SAE Technical Paper;2014-01-1533

Language

en

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