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http://dx.doi.org/10.3795/KSME-B.2017.41.6.397

Experimental Verification of Adsorption Rate Feedback Control Strategy for Automotive Urea-SCR DeNOX System  

Shin, Byeonguk (Dept. of Secured Smart Electric Vehicle, Kookmin Univ.)
Park, Jooyoung (Graduate School of Automotive Engineering, Kookmin Univ.)
Lee, Seang Wock (Graduate School of Automotive Engineering, Kookmin Univ.)
Kang, Yeonsik (Graduate School of Automotive Engineering, Kookmin Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.41, no.6, 2017 , pp. 397-407 More about this Journal
Abstract
In this study, a SCR system is employed to selectively reduce $NO_X$, which is a major cause of environmental pollution and issues in diesel engines. In particular, this paper focuses on the combination of feedforward injection strategies, depending on the NO/$NO_X$ ratio, and feedback injection control, using $NH_3$ coverage ratio, based on a SCR model. A 2.2 L passenger diesel engine, which is equipped with a diesel oxidation catalyst (DOC) and a diesel particle filter (DPF), was used in the experiments. The developed control algorithm is implemented on a real-time computer with injection control algorithm. By analyzing the $NO_X$ emission measurement, the performance of the proposed injection control algorithm is verified.
Keywords
SCR; $NO_X$; EURO; Urea; $NH_3$ Coverage Ratio; Feedback Controller; NEDC;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 Johnson, T., 2015, "Review of Vehicular Emissions Trends," SAE Int. J. Engines. 2015-04-14.
2 Johnson, T., 2010, "Review of Diesel Emissions and Conrol," SAE Int. J. Fuels Lubr. 2010-04-12.
3 Meisami-Azad, M., Mohammadpour, J., Grigoriadis, K. M. and Harold, M. P., 2010, "An Adaptive Control Strategy for Urea-SCR Aftertreatment System," American Control Conference, pp. 3027-3032.
4 Joo, K. H., Jo, J. H., Kim, C. D., Lee, J. H., and Kim, H. J., 2008, "The Study of $No_x$ Reduction using Urea-SCR System with CPF and DOC for Light Duty Vehicle; the Diesel $No_x$ Reduction System," SAE Technical Paper 2008-01-1183.
5 Hsieh, M. F. and Wang, J., 2010, " A Physically-Based, Control-Oriented Diesel Oxidation Catalyst(DOC) Model for The Applications of NO/$NO_2$ Ratio Estimation Using a $No_x$ Sensor," ASME 2010 Dynamic System and Control Conference, Vol 1, No. DSCC 2010-4010, pp. 687-694.
6 Seher, D. H. E., Reichelt, M. and Wickert, S., 2003, "Control Strategy for NOX-Emission Reduction with SCR," SAE Technical Paper 2003-01-3362.
7 Enderle, C., Vent, G. and Paule, M., 2008, "BLUETEC Diesel Technology-Clean Efficient and Powerful," SAE Technical Paper 2008-01-1182.
8 Piazzesi, G., Devadas, M., Krocher, O., Elsener, M. and Wokaum, A., 2006, "Isocyanic Acid Hydrolysis over Fe-ZSM5 in urea-SCR," Catalysis Communications, Vol. 7, pp. 600-603.   DOI
9 Willems, F., Cloudt, R., Eijnden, E., Genderen, M. and Verbeek, R., 2007, "Is Closed-Loop SCR Control Required to Meet Future Emission Target?," SAE Technical Paper 2007-01-1574.
10 York, A., Watling, T., Cox, J. and Jones, I., 2004,"Modeling an Ammonia SCR DeNOX Catalyst: ModelDevelopment and Validation," SAE Technical Paper2004-01-0155.
11 Lee, S. G., Lee, S. W. and Kang, Y. S., 2015,"Development and Validation of Urea-SCR Control-Oriented Model for $NO_X$ and $NH_3$ Slip Reduction,"Trans. Korean Soc. Mech. Eng. B, Vol. 39, No. 1, pp.1-9.   DOI
12 Song, X., 2013, "A SCR Model based on Reactorand Engine Experimental Studies for a Cu-zeoliteCatalyst," Dissertation, Michigan TechnologicalUniversity.
13 Deverakonda, M., Parker, G. and Johnson, J., 2008,"Model-Based Estimation and Control System Developmentin a Urea-SCR Aftertreatment System," SAEInt. J. Fuels Lubr. 2008-01-1324.
14 Park, J. Y., Choi, D. H., Kang, Y. S., Lee, S. W., ChoY. S. and Kim, T. M., 2015, "A Study on the Urea-Water Solution Dosing Strategy by NO/$NO_X$ Ratio of $DeNO_X$ SCR System," SAE Technical Paper 2015-01-0057.
15 Cavataio, G., Girard, J., Patterson, J., Montreuil, C.,Cheng, Y. and Lamber, C., 2007, "Laboratory Testingof Urea-SCR Formulations to Meet Tier 2 Bin 5Emissions," SAE Technical Paper 2007-01-1575.
16 Song, Q. and Zhu, G., 2002, "Model-based ClosedloopControl of Urea SCR Exhaust AftertreatmentSystem for Diesel Engine," SAE Technical Paper2002-01-0287.
17 Holluaf, B., Breitschadel, B., Sacher T., Hulser, H.and Schussler, M., 2011, "Highest NOX Conversion inSCR Catalysts through Model Based Control," SAETechnical Paper 2011-26-0042.
18 Chi, J. and DaCosta, H., 2005, "Modeling and Control of a Urea-SCR Aftertreatment System," SAETechnical Paper 2005-01-0966.
19 Shost, M., Noetzel, J., Wu, M., Sugiarto, T.,Bordewyk, T., Fulks, G. and Fisher G., 2008, "Monitoring,Feedback and Control of Urea SCR Dosing Systems for NOX reduction: Utilizing an Embedded Model and Ammonia Sensing," SAE Technical Paper2008-01-1325.
20 Kim, J. Y., Cavataio, G., Patterson, J. E., Laing, P.M. and Lambert, C. K., 2007, "Laboratory Studies and Mathematical Modeling of Urea SCR Catalyst Performance," SAE Technical Paper 2007-01-1573.
21 Wang, D. Y., Yao, S., Shost, M., Yoo, J. H., Cabush,D. and Racine, D., 2008, "Ammonia Sensor forClosed-Loop SCR Control," SAE Int. J. Passeng.Cars-Electron. 2008-04-14.
22 Schar, C., Onder, C., Elsener, M. and Geering, H.,2004, "Model-based Control of an SCR System for aMobile Application," SAE Technical Paper 2004-05-0452.
23 Schar, C., Onder, C. and Geering, H., 2006,"Control of an SCR Catalytic Converter System forMobile Heavy-duty Application," IEEE Trans. ControlSyst. Technol., Vol.14, No. 4, pp. 641-653.   DOI
24 Hsieh, M. F., 2010, "Control of Diesel Engine Urea Selective Catalytic Reduction Systems," Dissertation,Ohio State University.
25 Choi, D. H., 2014, "Design of Kalman Filter for Urea-SCR Control Systems of Diesel Engine," Dissertation, Kookmin University.