Chemistry: analytical and immunological testing – Testing of catalyst
Reexamination Certificate
2006-06-27
2006-06-27
Soderquist, Arlen (Department: 1743)
Chemistry: analytical and immunological testing
Testing of catalyst
C060S274000, C060S276000, C060S277000, C060S285000, C060S286000, C060S295000, C060S299000, C422S111000, C422S172000, C423S239100, C436S037000, C436S055000, C436S111000, C436S113000, C436S116000, C436S118000, C436S183000, C701S103000, C701S108000
Reexamination Certificate
active
07067319
ABSTRACT:
A system for determining a reagent solution quality indicator includes a reagent solution source for supplying the reagent solution to an emissions catalyst configured to receive a NOx-containing gas therethrough, means for determining a flow rate of NOx reduced from the gas by the catalyst, means for determining a flow rate of the reagent solution into the catalyst, and a control circuit determining the reagent solution quality indicator as a function of the NOx flow rate and the reagent solution flow rate. The system may additionally be configured to diagnose reagent solution quality by configuring the control circuit to monitor the reagent solution quality indicator over time and produce a fault value if the reagent solution quality indicator crosses a reagent quality indicator threshold, and to diagnose the catalyst by producing another fault value if the catalyst capacity point falls outside of a catalyst capacity point threshold.
REFERENCES:
patent: 4403473 (1983-09-01), Gladden
patent: 4751054 (1988-06-01), Watanabe
patent: 4963332 (1990-10-01), Brand et al.
patent: 5367875 (1994-11-01), Aboujaoude et al.
patent: 5522218 (1996-06-01), Lane et al.
patent: 5643536 (1997-07-01), Schmelz
patent: 5753805 (1998-05-01), Maloney
patent: 5941067 (1999-08-01), Hirota et al.
patent: 6082102 (2000-07-01), Wissler et al.
patent: 6092367 (2000-07-01), Dolling
patent: 6119448 (2000-09-01), Emmerling et al.
patent: 6125629 (2000-10-01), Patchett
patent: 6209313 (2001-04-01), Wissler et al.
patent: 6209315 (2001-04-01), Weigl
patent: 6253543 (2001-07-01), Russell
patent: 6327851 (2001-12-01), Bouchez et al.
patent: 6343468 (2002-02-01), Doelling et al.
patent: 6401450 (2002-06-01), Hoshi
patent: 6408619 (2002-06-01), Wissler et al.
patent: 6415602 (2002-07-01), Patchett et al.
patent: 6422005 (2002-07-01), Dolling et al.
patent: 6470673 (2002-10-01), van Nieuwstadt et al.
patent: 6532736 (2003-03-01), Hammerle et al.
patent: 6546720 (2003-04-01), van Nieuwstadt
patent: 6601387 (2003-08-01), Zurawski et al.
patent: 6658364 (2003-12-01), Olin
patent: 6697729 (2004-02-01), Wright
patent: 6732522 (2004-05-01), Wright et al.
patent: 2003/0036841 (2003-02-01), Xu et al.
patent: 2003/0070420 (2003-04-01), Uchida
patent: 2004/0040289 (2004-03-01), Mazur et al.
patent: 2004/0098980 (2004-05-01), Montreuil et al.
patent: 1164266 (2001-12-01), None
patent: 2375059 (2002-11-01), None
patent: 3-175112 (1991-07-01), None
Andrews Eric B.
Wills J. Stephen
Barnes & Thornburg LLP
Cummins Inc.
Soderquist Arlen
LandOfFree
System for diagnosing reagent solution quality and 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 System for diagnosing reagent solution quality and emissions..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for diagnosing reagent solution quality and emissions... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3695366