Power plants – Internal combustion engine with treatment or handling of... – By means producing a chemical reaction of a component of the...
Reexamination Certificate
2005-05-24
2005-05-24
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, C060S301000
Reexamination Certificate
active
06895747
ABSTRACT:
A method and a system for improving conversion efficiency of a urea-based SCR catalyst coupled downstream of a diesel or other lean burn engine is presented. The system includes an electrically heated vaporizer unit into which a mixture of reductant and air in injected. The mixture is vaporized in the unit and introduced into the exhaust gas prior to its entering the SCR catalyst. Introducing the reductant mixed with air into the reductant delivery system prevents lacquering and soot deposits on the heated element housed inside the unit, and also speeds up the vaporization process thus reducing system response delays and improving the device conversion efficiency. The reductant delivery system is further improved by adding a hydrolyzing catalyst to it, and by isolating the reductant and air mixture from the heating element.
REFERENCES:
patent: 4036180 (1977-07-01), Noguchi et al.
patent: 4112876 (1978-09-01), Mentschel
patent: 4170200 (1979-10-01), Takeuchi et al.
patent: 4222351 (1980-09-01), Kosaka et al.
patent: 4403473 (1983-09-01), Gladden
patent: 4576617 (1986-03-01), Renevot
patent: 4762093 (1988-08-01), McCabe et al.
patent: 4854123 (1989-08-01), Inoue
patent: 5021227 (1991-06-01), Kobayashi et al.
patent: 5201802 (1993-04-01), Hirota et al.
patent: 5209061 (1993-05-01), Takeshima
patent: 5233934 (1993-08-01), Krigmont et al.
patent: 5272871 (1993-12-01), Oshima et al.
patent: 5367875 (1994-11-01), Aboujaoude et al.
patent: 5369956 (1994-12-01), Daudel et al.
patent: 5410873 (1995-05-01), Tashiro
patent: 5412946 (1995-05-01), Oshima et al.
patent: 5426934 (1995-06-01), Hunt et al.
patent: 5428956 (1995-07-01), Maus et al.
patent: 5479775 (1996-01-01), Kraemer et al.
patent: 5522218 (1996-06-01), Lane et al.
patent: 5540047 (1996-07-01), Dahlheim et al.
patent: 5601792 (1997-02-01), Hug et al.
patent: 5609022 (1997-03-01), Cho
patent: 5609026 (1997-03-01), Berriman et al.
patent: 5628186 (1997-05-01), Schmelz
patent: 5643536 (1997-07-01), Schmetz
patent: 5665318 (1997-09-01), Rembold et al.
patent: 5706652 (1998-01-01), Sultan
patent: 5751602 (1998-05-01), Maus et al.
patent: 5771689 (1998-06-01), Bareis et al.
patent: 5806310 (1998-09-01), Daidou et al.
patent: 5809775 (1998-09-01), Tarabulski et al.
patent: 5831145 (1998-11-01), Logothetis et al.
patent: 5842341 (1998-12-01), Kibe
patent: 5845487 (1998-12-01), Fraenkle et al.
patent: 5884475 (1999-03-01), Hofmann et al.
patent: 5884476 (1999-03-01), Hirota et al.
patent: 5893267 (1999-04-01), Vogtlin et al.
patent: 5910096 (1999-06-01), Hepburn et al.
patent: 5921076 (1999-07-01), Krutzsch et al.
patent: 5924280 (1999-07-01), Tarabulski
patent: 5941067 (1999-08-01), Hirota et al.
patent: 5943858 (1999-08-01), Hofmann et al.
patent: 5950422 (1999-09-01), Dolling
patent: 5968464 (1999-10-01), Peter-Hoblyn et al.
patent: 6001318 (1999-12-01), Tillaart et al.
patent: 6003305 (1999-12-01), Martin et al.
patent: 6016653 (2000-01-01), Glassey et al.
patent: 6017503 (2000-01-01), Kato et al.
patent: 6021640 (2000-02-01), Hirota et al.
patent: 6038854 (2000-03-01), Penetrante et al.
patent: 6041594 (2000-03-01), Brenner et al.
patent: 6050088 (2000-04-01), Brenner
patent: 6066303 (2000-05-01), Sudduth et al.
patent: 6079203 (2000-06-01), Wakamoto
patent: 6082102 (2000-07-01), Wissler et al.
patent: 6089015 (2000-07-01), Strehlau et al.
patent: 6119448 (2000-09-01), Emmerling et al.
patent: 6119451 (2000-09-01), Vogtlin et al.
patent: 6122909 (2000-09-01), Murphy et al.
patent: 6122910 (2000-09-01), Hoshi et al.
patent: 6125629 (2000-10-01), Patchett
patent: 6131388 (2000-10-01), Sasaki et al.
patent: 6134883 (2000-10-01), Kato et al.
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: 6182444 (2001-02-01), Fulton 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: 6233925 (2001-05-01), Hirota 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: 6273120 (2001-08-01), Hofmann et al.
patent: 6294141 (2001-09-01), Twigg et al.
patent: 6299847 (2001-10-01), Allen
patent: 6301879 (2001-10-01), Weisweiler et al.
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: 6314919 (2001-11-01), Pugachev
patent: 6357223 (2002-03-01), Caren et al.
patent: 6357226 (2002-03-01), Borland
patent: 6383463 (2002-05-01), Mochida et al.
patent: 6387336 (2002-05-01), Marko et al.
patent: 6415602 (2002-07-01), Patchett et al.
patent: 6449945 (2002-09-01), van Nieuwstadt
patent: 6449947 (2002-09-01), Liu et al.
patent: 6470673 (2002-10-01), Van Nieuwstadt et al.
patent: 6487852 (2002-12-01), Murphy et al.
patent: 6491885 (2002-12-01), Tokunaga et al.
patent: 6722124 (2004-04-01), Pawson et al.
patent: 0487886 (1992-06-01), None
patent: WO 9939809 (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.
SAE 2001-01-0514, “Advanced Urea SCR Catalysts for Automotive Applications”, Gleshoff et al., Detroit, MI, Mar. 5-8, 2001.
SAE 952493, “An Urea Lean NOx Catalyst System for Light Duty Diesel Vehicles”, H. Luders et al., Toronto, Ontario, Oct. 16-19, 1995.
SAE 2001-01-3623, “Application of Urea SCR to Light Duty Diesel Vehicles”, Lambert et al.
Goebelbecker Michael
Ruona William Charles
Upadhyay Devesh
van Nieuwstadt Michiel J.
Denion Thomas
Ford Global Technologies LLC
Lippa Allan
Tran Diem
Voutyras Julia
LandOfFree
Diesel aftertreatment systems does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Diesel aftertreatment systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diesel aftertreatment systems will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3452407