Method for desulfating a nitrogen oxide storage catalyst

Details Method for desulfating a nitrogen oxide storage catalyst Method for desulfating a nitrogen oxide storage catalyst

2005-12-13

2005-12-13

Tran, Binh Q. (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, C060S297000

Reexamination Certificate

active

06973775

ABSTRACT:
The invention relates to a method for desulfating a nitrogen oxide storage catalyst that contains stored nitrogen oxides and sulfur oxides and that forms part of an exhaust gas purification system of a lean-burn engine. The method provides that, to initiate desulfation, the temperature of the catalyst is increased to the point where thermal desorption of the nitrogen oxides stored in the catalyst sets in, and the onset of thermal desorption of the nitrogen oxides is used as the signal to enrich the air/fuel mixture to perform the desulfation.

REFERENCES:
patent: 5832722 (1998-11-01), Cullen et al.
patent: 5974788 (1999-11-01), Hepburn et al.
patent: 6082325 (2000-07-01), Digeser et al.
patent: 6161377 (2000-12-01), Boegner et al.
patent: 6199373 (2001-03-01), Hepburn et al.
patent: 6530216 (2003-03-01), Pott
patent: 6637189 (2003-10-01), Boegner et al.
patent: 6823657 (2004-11-01), Waschatz et al.
patent: 197 50 226 (1997-11-01), None
patent: 196 36 790 (1998-03-01), None
patent: 198 27 195 (1999-12-01), None
patent: 198 51 843 (2000-05-01), None
patent: 198 51 843 (2000-05-01), None
patent: 198 49 082 (2000-10-01), None
patent: 100 26 762 (2001-06-01), None
patent: 100 26 762 (2001-12-01), None
patent: 0 560 991 (1997-07-01), None
patent: 0 829 623 (2003-04-01), None
patent: 2 344 772 (2002-07-01), None
patent: WO 00/08312 (2000-02-01), None
patent: WO 02/02921 (2002-01-01), None
European Patent Office Search Report for EP 03 01 8624, dated Nov. 11, 2003.

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