Method for desulfurization of an NOx storage...

Details Method for desulfurization of an NOx storage... Method for desulfurization of an NOx storage...

2005-09-13

2005-09-13

Denion, Thomas (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

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

C060S274000, C060S276000, C060S301000

Reexamination Certificate

active

06941748

ABSTRACT:
A method for the desulfurization of an NOxstorage catalyst arranged in an exhaust system of an internal combustion engine, whereby, for the desulfurization, the internal combustion engine is alternatingly operated in a lean mode at λ>1 and a rich mode at λ<1. During the desulfurization process, the present invention provides for the progress of the desulfurization being monitored, using a change in a parameter relating to intervals (In), whereby the interval (In) lasts from the beginning of an nthrich operating phase (Tf,n), until the measured value drops below a predetermined lambda threshold value (Sf) downstream from the NOxstorage catalyst (16). Furthermore, the progress of the desulfurization is monitored, using a change in a lambda probe voltage (Un) downstream from the NOxstorage catalyst (16), which is determined at the end of a predetermined interval at the beginning of an nthrich operating phase (Tf,n).

REFERENCES:
patent: 5771685 (1998-06-01), Hepburn
patent: 5778666 (1998-07-01), Cullen et al.
patent: 5953907 (1999-09-01), Kato et al.
patent: 5974788 (1999-11-01), Hepburn et al.
patent: 6119450 (2000-09-01), Boegner et al.
patent: 6164064 (2000-12-01), Pott
patent: 6171565 (2001-01-01), Hohne et al.
patent: 6497092 (2002-12-01), Theis
patent: 43 42 656 (1994-06-01), None
patent: 196 04 607 (1996-08-01), None
patent: 197 05 335 (1998-09-01), None
patent: 198 13 654 (1999-09-01), None
patent: 198 16 175 (1999-10-01), None
patent: 199 18 875 (1999-10-01), None
patent: 198 27 195 (1999-12-01), None
patent: 199 18 756 (2000-10-01), None
patent: 0 899 430 (1999-03-01), None
patent: 2 324 052 (1998-10-01), None
patent: WO 99/61763 (1999-12-01), None

Affiliated with

Also associated with

Rating

Method for desulfurization of an NOx storage... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for desulfurization of an NOx storage..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for desulfurization of an NOx storage... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3417515