Browse > Article
http://dx.doi.org/10.3795/KSME-B.2010.34.7.689

Improvement in Reduction Performance of LNT-Catalyst System with Micro-Reformer in Diesel Engine  

Park, Cheol-Woong (Korea Institute of Machinery and Materials)
Kim, Chang-Gi (Korea Institute of Machinery and Materials)
Kim, Kwan-Tae (Korea Institute of Machinery and Materials)
Lee, Dae-Hoon (Korea Institute of Machinery and Materials)
Song, Young-Hoon (Korea Institute of Machinery and Materials)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.34, no.7, 2010 , pp. 689-696 More about this Journal
Abstract
The Because of its high thermal efficiency, the direct injection (DI) diesel engine has emerged as a promising potential candidate in the field of transportation. However, the amount of nitrogen oxides ($NO_x$) increases in the local high-temperature regions and that of particulate matter (PM) increases in the diffusion flame region during diesel combustion. In the de-$NO_x$ system the Lean $NO_x$ Trap (LNT) catalyst is used, which absorbs $NO_x$ under lean exhaust gas conditions and releases it in rich conditions. This technology can provide a high $NO_x$-conversion efficiency, but the right amount of reducing agent should be supplied to the catalytic converter at the right time. In this research, the emission characteristics of a diesel engine equipped with a micro-reformer that acts as a reductants-supplying equipment were investigated using an LNT system, and the effects of the exhaust-gas temperature were also studied.
Keywords
Diesel deNOx; LNT Catalyst; Micro-reformer; Hydrogen-Enriched Gas;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
Times Cited By SCOPUS : 0
연도 인용수 순위
1 Nam, G. W., Park, J. W. and Lee, J. H., 2007,"A Study of NOx Reduction System with NOxStorage Catalyst," Spring Conference Proceedings,KSAE, pp.258-263.   과학기술학회마을
2 Hachisuka, I., Yoshida, T., Ueno, H.,Takahashi, N., Suda, A. and Sugiura, M., 2002,"Improvement of NOx Storage-Reduction Catalyst,"SAE 2002-01-0732.
3 Mauss, M. and Wnuck, W., 2003, “DieselReformers for Lean NOx Trap Regeneration andOther On-board Hydrogen Applications," 9thDiesel Engine Emission Reduction (DEER)Conference.
4 Parks, J. E., Ferguson, H. D. and Storey, J. M.,2001, "NOx Reduction with Natural Gas forLean Large-Bore Engine Applications Using LeanNox Trap Aftertreatment," 7th Diesel EngineEmission Reduction (DEER) Conference.
5 McDonald, J. and Bunker, B., 2002, "Testing ofthe Toyota Avensis DPNR at U.S. EPA-NVFEL,"SAE 2002-01-2877.
6 Eastwood, P., 2000, Critical Topics In ExhaustGas Aftertreatment, Research studies press Ltd..
7 Storey, J. M., "Hydrocarbon Species in theExhaust of Diesel Engines Equipped with AdvancedEmissions Control Devices," Coordinating ResearchCouncil, Inc. CRC Project No. AVFL-10b-2.
8 Shoji, A., Kamamoshita, S., Watanabe, T. andTanaka, T., 2004, "Development of a SimultaneousReduction System of NOx and Particulate Matterfor Light-Duty Truck," SAE 2004-01-0579.