Power plants – Internal combustion engine with treatment or handling of... – By means producing a chemical reaction of a component of the...
Reexamination Certificate
2006-09-26
2006-09-26
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...
C060S276000, C060S295000, C060S300000
Reexamination Certificate
active
07111451
ABSTRACT:
A process for controlling an exhaust system can comprise flowing exhaust gas from the engine past a first oxygen sensor, through a NOxadsorber, past a second oxygen sensor, through a catalyst and past a third oxygen sensor, wherein the first oxygen sensor, the second oxygen sensor, and the third oxygen sensor, are in operable communication with an electronic control module, and using a switching delay between the first oxygen sensor and the second oxygen sensor to determine a NOxvalue, wherein the NOxvalue is selected from the group consisting of a NOxregeneration time, a stored NOxamount, a NOxstorage efficiency, and combinations comprising at least one of the foregoing NOxvalues. A desulfurization process can be initiated when the NOxvalue is less than or equal to a first selected value. During the desulfurization process, when the third oxygen sensor signals a condition rich of stoichiometry, oxygen can be provided to the catalyst.
REFERENCES:
patent: 4703619 (1987-11-01), Chujo et al.
patent: 4854124 (1989-08-01), Tamura
patent: 5088281 (1992-02-01), Izutani et al.
patent: 5115639 (1992-05-01), Gopp
patent: 5157920 (1992-10-01), Nakaniwa
patent: 5224347 (1993-07-01), Yakabe et al.
patent: 5255512 (1993-10-01), Hamburg et al.
patent: 5280707 (1994-01-01), Nakashima et al.
patent: 5361582 (1994-11-01), Uchida et al.
patent: 5388406 (1995-02-01), Takeshima et al.
patent: 5402641 (1995-04-01), Katoh et al.
patent: 5437153 (1995-08-01), Takeshima et al.
patent: 5473887 (1995-12-01), Takeshima et al.
patent: 5483795 (1996-01-01), Katoh et al.
patent: 5577382 (1996-11-01), Kihara et al.
patent: 5713199 (1998-02-01), Takeshima et al.
patent: 5735119 (1998-04-01), Asanuma et al.
patent: 5743084 (1998-04-01), Hepburn
patent: 5746049 (1998-05-01), Cullen et al.
patent: 5832722 (1998-11-01), Cullen et al.
patent: 5842340 (1998-12-01), Bush et al.
patent: 5974788 (1999-11-01), Hepburn et al.
patent: 5974790 (1999-11-01), Adamczyk et al.
patent: 5983627 (1999-11-01), Asik
patent: 6003306 (1999-12-01), Kalversberg et al.
patent: 6041592 (2000-03-01), Huynh et al.
patent: 6085518 (2000-07-01), Yamashita et al.
patent: 6293094 (2001-09-01), Schmidt et al.
patent: 6497092 (2002-12-01), Theis
patent: 6568177 (2003-05-01), Surnilla
patent: 6722125 (2004-04-01), Pfalzgraf
patent: 2003/0140620 (2003-07-01), Shigapov et al.
patent: 2004/0154285 (2004-08-01), Nagaoka et al.
Bailey Owen H.
Dou Danan
Delphi Technologies Inc.
Denion Thomas
Edwards Loren
Marshall Paul L.
LandOfFree
NO x adsorber diagnostics and automotive exhaust control... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with NO x adsorber diagnostics and automotive exhaust control..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and NO x adsorber diagnostics and automotive exhaust control... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3536994