Power plants – Internal combustion engine with treatment or handling of... – Having sensor or indicator of malfunction – unsafeness – or...
Reexamination Certificate
2008-07-08
2008-07-08
Denion, Thomas (Department: 3748)
Power plants
Internal combustion engine with treatment or handling of...
Having sensor or indicator of malfunction, unsafeness, or...
Reexamination Certificate
active
07395658
ABSTRACT:
There is provided an apparatus that estimates the NOx adsorption amount, comprising a NOx trap catalyst that is disposed in an exhaust passage of an engine, for adsorbing NOx in exhaust gases during lean operation and releasing and reducing the adsorbed NOx during rich operation, an operation unit that computes an amount of emission from the catalyst during rich operation by using a map or a polynomial equation that reflects emissions from the catalyst based on the exhaust gas temperature and the exhaust gas flow rate of the exhaust passage and the excess-air factor upstream of the catalyst, and an estimating unit that estimates an amount of adsorption in the NOx trap catalyst from the computed emission amount.
REFERENCES:
patent: 5595060 (1997-01-01), Togai et al.
patent: 6101809 (2000-08-01), Ishizuka et al.
patent: 6205773 (2001-03-01), Suzuki
patent: 6311484 (2001-11-01), Roth et al.
patent: 6705077 (2004-03-01), Uedahira et al.
patent: 6826902 (2004-12-01), Sun et al.
patent: 2004/0244361 (2004-12-01), Tanabe et al.
patent: 2006/0112681 (2006-06-01), Nakayama et al.
patent: 0 735 250 (1996-10-01), None
patent: 1 083 306 (2001-03-01), None
patent: 1 273 337 (2003-01-01), None
patent: 09-072235 (1997-03-01), None
Relevant portion of European Search Report of corresponding European Application EP 05 02 0300.
Kouketsu Susumu
Nakayama Shinji
Sunohara Daisuke
Tanabe Keiki
Denion Thomas
Edwards Loren
Mitsubishi Fuso Truck and Bus Corporation
Rossi Kimms & McDowell LLP
LandOfFree
Apparatus and method for estimating NOx trap catalyst... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for estimating NOx trap catalyst..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for estimating NOx trap catalyst... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2783990