Exhaust gas aftertreatment systems

Power plants – Internal combustion engine with treatment or handling of... – By means producing a chemical reaction of a component of the...

Reexamination Certificate

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C060S276000, C060S289000, C060S295000, C060S297000, C060S301000, C060S303000

Reexamination Certificate

active

06928806

ABSTRACT:
A system for effective NOx and particulate matter control in a diesel or other lean burn internal combustion engine is presented. The system includes a urea-based SCR catalyst having an oxidation catalyst coupled upstream of it and a particulate filter coupled downstream of the SCR catalyst. This system configuration results in improved NOx conversion due to fast SCR catalyst warm-up and higher operating temperatures. Additionally, placing the particulate filter last in this system configuration reduces tailpipe ammonia emissions as well as prevents any thermal damage to the SCR catalyst due to the particulate filter regeneration.

REFERENCES:
patent: 5100632 (1992-03-01), Dettling et al.
patent: 5201802 (1993-04-01), Hirota et al.
patent: 5665318 (1997-09-01), Rembold et al.
patent: 5746989 (1998-05-01), Murachi et al.
patent: 5771689 (1998-06-01), Bareis et al.
patent: 5809775 (1998-09-01), Tarabulski et al.
patent: 5893267 (1999-04-01), Vogtlin et al.
patent: 5924280 (1999-07-01), Tarabulski
patent: 5992141 (1999-11-01), Berriman et al.
patent: 6003305 (1999-12-01), Martin et al.
patent: 6038854 (2000-03-01), Penetrante et al.
patent: 6066303 (2000-05-01), Sudduth et al.
patent: 6125629 (2000-10-01), Patchett
patent: 6167698 (2001-01-01), King et al.
patent: 6171566 (2001-01-01), Ku et al.
patent: 6182443 (2001-02-01), Jarvis et al.
patent: 6192675 (2001-02-01), Hirota et al.
patent: 6209315 (2001-04-01), Weigl
patent: 6221324 (2001-04-01), Coq et al.
patent: 6260353 (2001-07-01), Takahashi
patent: 6266955 (2001-07-01), Liang et al.
patent: 6269633 (2001-08-01), Van Nieuwstadt et al.
patent: 6293096 (2001-09-01), Khair et al.
patent: 6294141 (2001-09-01), Twigg et al.
patent: 6299847 (2001-10-01), Allen
patent: 6305160 (2001-10-01), Hammerle et al.
patent: 6311480 (2001-11-01), Suzuki et al.
patent: 6314722 (2001-11-01), Matros et al.
patent: 6357226 (2002-03-01), Borland
patent: 6383463 (2002-05-01), Mochida et al.
patent: 6615580 (2003-09-01), Khair et al.
patent: 6696031 (2004-02-01), Twigg et al.
patent: 2003/0056499 (2003-03-01), Binder et al.
patent: 2003/0167756 (2003-09-01), Szymkowicz
patent: 2003/0180195 (2003-09-01), Chapman et al.
patent: 2003/0209011 (2003-11-01), Duvinage et al.
patent: 2003/0213234 (2003-11-01), Funk et al.
patent: 2004/0206069 (2004-10-01), Tumati et al.
patent: 0806553 (1997-11-01), None
patent: WO 99/39809 (1999-08-01), None
IMECE-2002-DSC-32104, “Modeling of a Urea SCR Catalyst with Automotive Applications”, Devesh Upadhyay, Michiel Van Nieuwstadt, pp. 1-7, Proceedings of ASME:IMECE, Nov.-17, 2002, New Orleans.
IMECE-2002-DSC-32103, “Control Design of an Automotive Urea SCR Catalyst”, Devesh Upadhyay, Michiel Van Nieuwstadt, pp. 1-8, Proceedings of ASME:IMECE, Nov.-17, 2002, New Orleans.

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