JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Characteristics of Simultaneous Removal of NOx and PM over a Hybrid System of LNT/DPF + SCR/DPF in a Single Cylinder Diesel Engine
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Characteristics of Simultaneous Removal of NOx and PM over a Hybrid System of LNT/DPF + SCR/DPF in a Single Cylinder Diesel Engine
Kang, Wooseok; Park, Su Han; Choi, Byungchul;
  PDF(new window)
 Abstract
The market demand for diesel engine tends to increase in general passenger cars as well as commercial vehicles because of its advantages. However, to meet the vehicle emissions regulation which will be more stringent in the future, it is necessary to plurally apply all after-treatment technologies such as diesel oxidation catalyst (DOC), catalyzed diesel particulate filter (CDPF), lean NOx trap (LNT) and selective catalytic reduction (SCR), and so on. Accordingly, the exhaust after-treatment system for diesel vehicle requires the technology of minimizing the numbers of catalysts by integrating every individual catalysts. The purposes of this study is to develop hybrid exhaust after-treatment device system which simultaneously uses LNT/DPF and SCR/DPF catalyst concurrently reducing NOx and particulate matter (PM). As the results, the hybrid system with generated at LNT/DPF working as a reducing agent of SCR/DPF catalyst, improving NOx conversion rate, was found to be more excellent in de-NOx performance than that in LNT/DPF alone system.
 Keywords
Catalyst;After-treatment system;SCR;DPF;LNT;
 Language
Korean
 Cited by
 References
1.
S. M. Woo and B. C. Choi, "Numerical Analysis on Melting Phenomena and Phase Interface Change of Frozen Urea-aqueous Solution by Electric Heater," Transactions of KSAE, Vol.22, No.5, pp.13-19, 2014.

2.
S. K. Hwang, A. H. Ko, J. W. Yoon, C. L. Myung, S. S. Park and E. S. Kim, "A Study on NOx Reduction Characteristics of LNT Catalyst with Fuel Injection Control in Light-duty Diesel Engine," Transactions of KSAE, Vol.20, No.4, pp.150-155, 2012.

3.
S. H. Lee, J. H. Kwak, S. Y. Lee and J. H. Lee, "On-road Chasing and Laboratory Measurements of Exhaust Particle Emissions of Diesel Vehicles Equiped with After-treatment Technologies (DPF, Urea-SCR)," Int. J. Automotive Technology, Vol.16, No.4, pp.551-559, 2015. crossref(new window)

4.
T. V. Johnson, "Diesel Emissions in Review," SAE 2011-01-0304, 2011.

5.
T. V. Johnson, "Vehicular Emissions in Review," SAE 2012-01-0368, 2012.

6.
T. V. Johnson, "Vehicular Emissions in Review," SAE 2013-01-0538, 2013.

7.
T. V. Johnson, "Vehicular Emissions in Review," SAE 2014-01-1491, 2014.

8.
W. S. Kang, B. C. Choi and H. N. Kim, "Simultaneous Reduction Characteristics of PM and NOx by NbCe Catalyst," KSAE Annual Conference Proceedings, pp.368-371, 2011.

9.
W. S. Kang and B. C. Choi, "Thermal and Chemical Aging Characteristics of SCR/DPF Catalysts for Diesel Vehicle," KSAE Annual Conference Proceedings, pp.510-514, 2012.

10.
J. Tan, C. Solbrig and S. J. Schmieg, "The Development of Advanced 2-way SCR/DPF Systems to Meet Future Heavy-duty Diesel Emissions," SAE 2011-01-1140, 2011.

11.
T. C. Watling, M. R. Ravenscroft and G. Avery, "Development, Validation and Application of a Model for an SCR Catalyst Coated Diesel Particulate Filter," Catal. Today, Vol.188, No.1, pp.32-41, 2012. crossref(new window)

12.
Y. He, D. B. Brown, S. Lu, M. J. Paratore and J. Li, "Opportunities and Challenges for Blended 2-way SCR/DPF Aftertreatment Technologies," SAE 2009-01-0274, 2009.

13.
J. Balland, M. Parmentier and J. Schmitt, "Control of a Combined SCR on Filter and Underfloor SCR System for Low Emission Passenger Cars," SAE 2014-01-1522, 2014.

14.
W. S. Kang and B. C. Choi, "Effect of Copper Precursor on Simultaneous Removal of PM and NOx of a 2-way SCR/CDPF," Chem. Eng. Sci., Vol.141, No.1, pp.175-183, 2016. crossref(new window)

15.
W. S. Kang, B. C. Choi and H. N. Kim, "Characteristics of the Simultaneous Removal of PM and NOx Using CuNb-ZSM-5 Coated on Diesel Particulate Filter," J. of Industrial and Engineering Chemistry, Vol.19, No.4, pp.1406- 1412, 2013 crossref(new window)

16.
B. C. Choi and K. S. Lee, "LNT/CDPF Catalysts for Simultaneous Removal of NOx and PM from Diesel Vehicle Exhaust," Chem. Eng. J., Vol.240, No.1, pp.476-486, 2014. crossref(new window)

17.
W. S. Kang and B. C. Choi, "Characteristics of Simultaneous Removal of NOx and PM over a Hybrid System of LNT/DPF + SCR/DPF in a Single Cylinder Diesel Engine," KSAE Spring Conference Proceedings, pp.172-173, 2015.

18.
W. S. Kang, A Study on Hybrid Catalytic Converter System for Simultaneous Reduction of PM and NOx, Ph. D. Dissertation, Chonnam National University, Gwangju, Korea, 2015.

19.
G. C. Mondragon Rodriguez, K. Kelm, S. Heikens, W. Grunert and B. Saruhan, "Pd-integrated Perovskites for TWC Applications: Synthesis, Microstructure and $N_2O$-selectivity," Catal. Today, Vol.184, No.1, pp.184-191, 2012. crossref(new window)

20.
J. R. Theis, A Lean NOx Trap + Selective Catalytic Reduction System for Controlling the NOx Emissions from a Diesel Engine, Ph. D. Dissertation, University of Michigan, Ann Arbor, 2006.

21.
A. G. Konstandopoulos, M. Kostoglou, N. Vlachos and E. Kladopoulou, "Progress in Diesel Particulate Filter Simulation," SAE 2005-01- 0946, 2005.

22.
D. Wang, Z. C. Liu, J. Tian, J. W. Liu and J. R. Zhang, "Inverstigation of Particle Emission Characteristics from a Diesel Engine with a Diesel Particulate Filter for Alternative Fuels," Int. J. Automotive Technology, Vol.13, No.7, pp.1023-1032, 2012. crossref(new window)

23.
K. C. Oh, K. B. Lee and C. B. Lee, "An Experimental Study on Filtration Efficiency and BPT Characteristics by PM Loading in Partialdiesel Particulate Filter," Transactions of KSAE, Vol.20, No.1, pp.147-154, 2012.