Power plants – Internal combustion engine with treatment or handling of... – By means producing a chemical reaction of a component of the...
Reexamination Certificate
2008-04-30
2011-12-13
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...
C060S299000
Reexamination Certificate
active
08074445
ABSTRACT:
Various embodiments of an apparatus, system, and method are disclosed for reducing NOxemissions on an SCR catalyst. For example, according to one representative embodiment, an apparatus for reducing NOxemissions in an engine exhaust includes a NOxreduction target module that is operable to determine a NOxreduction requirement that includes an amount of NOxin the exhaust gas stream to be reduced on a selective catalytic reduction (SCR) catalyst. The apparatus also includes an ammonia target module that is operable to determine an ammonia addition requirement that includes an amount of ammonia added to the exhaust gas stream to achieve the NOxreduction requirement. The apparatus also includes a reductant target module that has a hydrolysis module and an inverse hydrolysis module. The hydrolysis module is operable to determine a predicted amount of ammonia and isocyanic acid entering the SCR catalyst. The inverse hydrolysis module is operable to determine a reductant injection requirement based at least partially on the predicted amount of ammonia and isocyanic acid entering the SCR catalyst.
REFERENCES:
patent: 5552128 (1996-09-01), Chang et al.
patent: 6109024 (2000-08-01), Kinugasa et al.
patent: 6266955 (2001-07-01), Liang et al.
patent: 6295809 (2001-10-01), Hammerle et al.
patent: 6311484 (2001-11-01), Roth et al.
patent: 6415602 (2002-07-01), Patchett et al.
patent: 6446430 (2002-09-01), Roth et al.
patent: 6581374 (2003-06-01), Patchett et al.
patent: 6662553 (2003-12-01), Patchett et al.
patent: 6701707 (2004-03-01), Upadhyay et al.
patent: 6713030 (2004-03-01), Chandler et al.
patent: 6742330 (2004-06-01), Genderen
patent: 6882929 (2005-04-01), Liang et al.
patent: 6892530 (2005-05-01), Montreuil et al.
patent: 6928806 (2005-08-01), Tennison et al.
patent: 6981368 (2006-01-01), van Nieuwstadt et al.
patent: 6993900 (2006-02-01), Upadhyay et al.
patent: 7017389 (2006-03-01), Gouma
patent: 7093427 (2006-08-01), van Nieuwstadt et al.
patent: 7113835 (2006-09-01), Boyden et al.
patent: 7117046 (2006-10-01), Boyden et al.
patent: 7150145 (2006-12-01), Patchett et al.
patent: 7168243 (2007-01-01), Endicott et al.
patent: 7332135 (2008-02-01), Gandhi et al.
patent: 7650746 (2010-01-01), Hu et al.
patent: 7802419 (2010-09-01), Doring
patent: 2002/0044897 (2002-04-01), Kakwani et al.
patent: 2004/0112046 (2004-06-01), Tumati et al.
patent: 2005/0282285 (2005-12-01), Radhamohan et al.
patent: 2006/0086080 (2006-04-01), Katogi et al.
patent: 2006/0130458 (2006-06-01), Solbrig
patent: 2006/0155486 (2006-07-01), Walsh et al.
patent: 2007/0137184 (2007-06-01), Patchett et al.
patent: 2007/0214777 (2007-09-01), Allansson et al.
patent: 2007/0295003 (2007-12-01), Dingle et al.
patent: 2008/0022658 (2008-01-01), Viola et al.
patent: 2008/0060348 (2008-03-01), Robel et al.
patent: 2008/0066455 (2008-03-01), Viola et al.
patent: 2008/0250774 (2008-10-01), Solbrig
patent: 2008/0250778 (2008-10-01), Solbrig
patent: 2008/0295499 (2008-12-01), Driscoll et al.
patent: 2010/0028230 (2010-02-01), Gady et al.
patent: 1338562 (2003-08-01), None
patent: 1083979 (2004-06-01), None
patent: 1431533 (2004-06-01), None
patent: 1339955 (2005-08-01), None
patent: 1609977 (2005-12-01), None
patent: 1672192 (2006-06-01), None
patent: 10118492 (1998-05-01), None
patent: 2002327617 (2002-11-01), None
patent: 2004100700 (2004-04-01), None
patent: 2007255367 (2007-10-01), None
patent: 1020010043138 (2001-05-01), None
patent: 1020030034139 (2003-05-01), None
patent: 1020080030163 (2008-04-01), None
patent: 9955446 (1999-11-01), None
patent: 0214657 (2002-02-01), None
patent: 04000443 (2003-12-01), None
patent: 2006000877 (2006-01-01), None
patent: WO 2007014649 (2007-02-01), None
patent: 2007066502 (2007-06-01), None
patent: 2007014649 (2007-08-01), None
PCT/US2009/067023, International Search Report and Written Opinion, Jul. 13, 2010.
PCT/US2009/067020, International Search Report and Written Opinion, Jul. 13, 2010.
PCT/US2009/042335, International Search Report and Written Opinion, Dec. 14, 2009.
Control of a Urea SCR Catalytic Converter System for a Mobile Heavy Duty Diesel Engine—C.M. Schar, C.H. Onder, H.P. Geering and M. Elsener—SAE 2003-01-0776, Mar. 3-6, 2003.
PCT/US2009/042409, International Search Report and Written Opinion, Nov. 25, 2009.
PCT/US2009/042423, International Search Report and Written Opinion, Nov. 27, 2009.
P.R. Ettireddy et al. “Surface characterization studies of TiO2 supported manganese oxide catalysts for low temperature SCR of NO with NH3” Applied Catalysis B, 76 (2007).
D.A. Pena, et al. “Identification of Surface Species on Titania-Supported Manganese, Chromium, and Copper Oxide Low-Temperature SCR Catalysts”: Journal of Physical Chemistry B, 108 (2004) 9927-9936.
PCT/US2010/048502, International Search Report and Written Opinion, May 23, 2011.
Chi John N.
Garimella Phanindra
Ofoli Abdul R.
Cummins IP, Inc.
Denion Thomas
Kunzler Needham Massey & Thorpe
Maines Patrick
LandOfFree
Apparatus, system, and method for reducing NO x emissions... 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, system, and method for reducing NO x emissions..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus, system, and method for reducing NO x emissions... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4271881