System and methods for improved emission control of internal...

Details System and methods for improved emission control of internal... System and methods for improved emission control of internal...

2006-08-01

2006-08-01

Nguyen, Tu M. (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

C060S274000, C060S295000, C060S303000, C048S061000, C048S1970FM, C123S00100A, C123S003000

Reexamination Certificate

active

07082753

ABSTRACT:
The present invention provides systems and methods to improve the performance and emission control of internal combustion engines equipped with nitrogen oxides storage-reduction (“NSR”) emission control systems. The system generally includes a NSR catalyst, a fuel processor located upstream of the NSR catalyst, and at least one fuel injection port. The fuel processor converts a fuel into a reducing gas mixture comprising CO and H2. The reducing gas mixture is then fed into the NSR catalyst, where it regenerates the NSR adsorbent, reduces the NOxto nitrogen, and optionally periodically desulfates the NSR catalyst. The fuel processor generally includes one or more catalysts, which facilitate reactions such as combustion, partial oxidation, and/or reforming and help consume excess oxygen present in an engine exhaust stream. The methods of the present invention provide for NSR catalyst adsorbent regeneration using pulsed fuel flow. Control strategies are also provided.

REFERENCES:
patent: 5183401 (1993-02-01), Dalla Betta et al.
patent: 5232357 (1993-08-01), Dalla Betta et al.
patent: 5250489 (1993-10-01), Dalla Betta et al.
patent: 5259754 (1993-11-01), Dalla Betta et al.
patent: 5412946 (1995-05-01), Oshima et al.
patent: 5441401 (1995-08-01), Yamaguro et al.
patent: 5458857 (1995-10-01), Collins et al.
patent: 5512250 (1996-04-01), Betta et al.
patent: 5586433 (1996-12-01), Boegner et al.
patent: 5894728 (1999-04-01), Wakamoto
patent: 5921076 (1999-07-01), Krutzsch et al.
patent: 5950932 (1999-09-01), Takeda et al.
patent: 5968463 (1999-10-01), Shelef et al.
patent: 5979866 (1999-11-01), Baxter et al.
patent: 6109018 (2000-08-01), Rostrup-Nielsen et al.
patent: 6161378 (2000-12-01), Hanaoka et al.
patent: 6165633 (2000-12-01), Negishi
patent: 6167696 (2001-01-01), Maaseidvaag et al.
patent: 6168098 (2001-01-01), Brinn, Jr.
patent: 6174504 (2001-01-01), Silver et al.
patent: 6176078 (2001-01-01), Balko et al.
patent: 6202407 (2001-03-01), Brusasco et al.
patent: 6267792 (2001-07-01), Nagamiya et al.
patent: 6449947 (2002-09-01), Liu et al.
patent: 6454192 (2002-09-01), Perry
patent: 6508057 (2003-01-01), Bouchez et al.
patent: 6527980 (2003-03-01), Roden et al.
patent: 6557342 (2003-05-01), Suga et al.
patent: 6560958 (2003-05-01), Bromberg et al.
patent: 6576203 (2003-06-01), Abe et al.
patent: 6641795 (2003-11-01), Abe
patent: 6669914 (2003-12-01), Wen et al.
patent: 6698188 (2004-03-01), Irisawa et al.
patent: 6698190 (2004-03-01), Docter et al.
patent: 6708484 (2004-03-01), Onodera et al.
patent: 6713040 (2004-03-01), Ahmed et al.
patent: 6845612 (2005-01-01), Jobson et al.
patent: 6869456 (2005-03-01), Salemi et al.
patent: 2001/0041153 (2001-11-01), Benz
patent: 2002/0031690 (2002-03-01), Shimazu et al.
patent: 2002/0038542 (2002-04-01), Akama et al.
patent: 2002/0062641 (2002-05-01), Shiino et al.
patent: 2002/0108309 (2002-08-01), Grieve et al.
patent: 2002/0121461 (2002-09-01), Ueda et al.
patent: 2003/0070425 (2003-04-01), Kokusyo et al.
patent: 2003/0101713 (2003-06-01), Dalla Betta et al.
patent: 2004/0006975 (2004-01-01), Stroia et al.
patent: 2004/0043343 (2004-03-01), Kamijo
patent: 2004/0101720 (2004-05-01), Ogawa
patent: 2004/0187483 (2004-09-01), Dalla Betta et al.
patent: 2005/0089732 (2005-04-01), Aoyama et al.
patent: 2005/0217178 (2005-10-01), Aoyama
patent: 100 18 792 (2001-09-01), None
patent: 202 18 811 (2003-04-01), None
patent: 0 537 968 (1993-04-01), None
patent: 0 893 154 (1999-01-01), None
patent: 1 008 379 (2000-06-01), None
patent: 1 094 206 (2001-04-01), None
patent: 1 211 394 (2002-06-01), None
patent: 63-068714 (1988-03-01), None
patent: 03196839 (1991-08-01), None
patent: 09-317440 (1997-12-01), None
patent: WO 01/34950 (2001-05-01), None
patent: WO 01/34959 (2001-05-01), None
patent: WO-01/73878 (2001-10-01), None
patent: WO-02/04346 (2002-01-01), None
patent: WO-02/45839 (2002-06-01), None
patent: WO 03/048536 (2003-06-01), None
patent: WO-2004/046514 (2004-06-01), None
patent: WO-2004/101965 (2004-11-01), None
Majewski, W. A. (2001). “NOx Adsorbers,”DieselNet Technology Guide: Diesel Catalystsretreived from <http://www.dieselnet.com> 13 pages total.
Matsumoto, S. (2000). “Catalytic Reduction of Nitrogen Oxides,”CATTECH4(2):102-109.
Molinier, M. (2001). “NOxAdsorber Desulfurization Under Conditions Compatible With Diesel Applications,”ASEC Manufacturing/Delphi Automotive Systemspp. 79-85.
Yamasaki, K. et al. (2001). “Effect of the Addition of Transition Metals to Pt/B/Al2O3Catalyst on the NOxStorage-Reduction Catalysis Under Oxidizing Conditions in the Presence of SO2,”Applied Catalysis B: Environmental30:459-468.
International Search Report issued for PCT Application PCT/US2004/014007 filed May 5, 2004, mailed Sep. 8, 2004, six pages.
Christensen, T. A. et al. (Mar. 1994). “Improve Syngas Production Using Autothermal Reforming,”Hydrocarbon Processing73(3):39-46.
Costa, C. N. et al. (2001). “An Investigation of the NO/H2/O2(Lean-deNOx) Reaction on a Highly Active and Selective Pt/La0.5Ce0.5MnO3Catalyst,”J. Catalysis197(2):350-364.
Heck, R. M. et al., eds. (1995). “The Preparation of Catalytic Materials: Carriers, Active Components, and Monolithic Substrates,” Chapter 2In Catalytic Air Pollution Control: Commercial Technology, Van Nostrand Reinhold, pp. 19-27 (Includes Table of Contents).
Hepburn, J. S. et al. (1996). “Experimental and Modeling Investigations of NOxTrap Performance,”SAE Technical Paper Series962051:1-23.
International Search Report for PCT Patent Application No. PCT/US02/38813 filed Jun. 12, 2003, mailed Mar. 17, 2003, three pages.
International Search Report for PCT Patent Application No. PCT/US03/37022 filed on Nov. 17, 2003, mailed on Apr. 26, 2004, three pages.
Jones, M. R. et al. (1993). “Exhaust-Gas Reforming of Hydrocarbon Fuels,”SAE Technical Paper Series931096:223-233.
Machida, M. et al. (2001). “Low Temperature Catalytic NOx-H2Reactions Over Pt/TiO2-ZrO2In An Excess Oxygen,”Applied Catalysis B Environmental35:107-116.
Miyoshi, N. et al. (1995). “Development of New Concept Three-Way Catalyst for Automotive Lean-Burn Engines,”SAE Technical Paper Series950809:121-130.
Shelef, M. (1995). “Selective Catalytic Reduction of NOxwith N-Free Reductants,”Chem. Rev.95:209-225.

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