Is Closed-Loop SCR Control Required to Meet Future Emission Targets?
作者： Frank Willems , Robert Cloudt , Edwin van den Eijnden , Marcel van Genderen , Ruud Verbeek
DOI: 10.4271/2007-01-1574
关键词:
摘要: To meet 2010 emission targets, optimal SCR system performance is required. In addition, attention has to be paid in-use compliance requirements. Closed-loop control seems an attractive option the formulated goals. This study deals with potential and limitations of closed-loop control. High NO x conversion in combination acceptable NH 3 slip can realized open-loop strategy. However, needed make robust for urea dosage inaccuracy, catalyst ageing engine-out variations. Then, meets conformity production norms. demonstrate control, a sensor based strategy crosssensitivity compensation compared adaptive surface coverage/NH openloop The shows best over simulated ESC ETC cycles. dynamics, time delay injection maximum targets limit If new reagent systems future technology are able relieve these limitations, reduce calibration effort improve transient performance.
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core.ac.uk 参考文章(9)
John N. Chi, Herbert F. M. Dacosta, Modeling and Control of a Urea-SCR Aftertreatment System SAE Technical Paper Series. ,vol. 114, pp. 449- 464 ,(2005) , 10.4271/2005-01-0966
R. Acharya, M. Alam, A. L. Boehman, Fuel and System Interaction Effects on Urea-SCR Control of NOx in Diesel Exhaust Aftertreatment SAE 2006 World Congress & Exhibition. ,(2006) , 10.4271/2006-01-0638
C. M. Schär, C. H. Onder, H. P. Geering, M. Elsener, Control-Oriented Model of an SCR Catalytic Converter System SAE 2004 World Congress & Exhibition. ,(2004) , 10.4271/2004-01-0153
Rinie van Helden, Ruud Verbeek, Frank Willems, Reinier van der Welle, Optimization of urea SCR deNOx systems for HD diesel engines SAE 2004 World Congress & Exhibition, March 2004, Detroit, Michigan, USA. ,(2004) , 10.4271/2004-01-0154
Qingwen Song, George Zhu, Model-based Closed-loop Control of Urea SCR Exhaust Aftertreatment System for Diesel Engine SAE 2002 World Congress & Exhibition. ,(2002) , 10.4271/2002-01-0287
Jim Nebergall, Eric Hagen, Justin Owen, Selective Catalytic Reduction On-Board Diagnostics: Past and Future Challenges SAE Technical Paper Series. ,(2005) , 10.4271/2005-01-3603
Thomas Hammer, Stefan Bröer, Plasma Enhanced Selective Catalytic Reduction of NOx for Diesel Cars International Fall Fuels and Lubricants Meeting and Exposition. ,(1998) , 10.4271/982428
M Koebel, M Elsener, M Kleemann, Urea-SCR: a promising technique to reduce NOx emissions from automotive diesel engines Catalysis Today. ,vol. 59, pp. 335- 345 ,(2000) , 10.1016/S0920-5861(00)00299-6
Devesh Upadhyay, Michiel Van Nieuwstadt, Control Design of an Automotive Urea SCR Catalyst ASME 2002 International Mechanical Engineering Congress and Exposition. pp. 699- 706 ,(2002) , 10.1115/IMECE2002-32103