Power plants – Internal combustion engine with treatment or handling of... – Having sensor or indicator of malfunction – unsafeness – or...
Reexamination Certificate
2005-09-26
2009-10-20
Denion, Thomas E (Department: 3748)
Power plants
Internal combustion engine with treatment or handling of...
Having sensor or indicator of malfunction, unsafeness, or...
C060S274000, C060S276000, C060S286000, C060S301000
Reexamination Certificate
active
07603846
ABSTRACT:
A method for operating an internal combustion engine whose exhaust area has at least one SCR catalytic converter and a device for carrying out the method are described. The SCR catalytic converter receiving the reagent supports the conversion of the raw NOx emission of the internal combustion engine. At least a measure of the NOx concentration occurring downstream from the SCR catalytic converter is calculated and this value may be used to define a metering signal for the reagent and/or a heating measure for heating the SCR catalytic converter may be initiated. According to a refinement of this arrangement, a difference between the calculated NOx concentration and the sum of the measured NOx concentration and the measured reagent concentration downstream from the SCR catalytic converter is determined, and it is possible to intervene in the determination of the metering signal depending on the difference.
REFERENCES:
patent: 4751054 (1988-06-01), Watanabe
patent: 6134883 (2000-10-01), Kato et al.
patent: 6269633 (2001-08-01), van Nieuwstadt et al.
patent: 6305160 (2001-10-01), Hammerle et al.
patent: 6415602 (2002-07-01), Patchett et al.
patent: 6532736 (2003-03-01), Hammerle et al.
patent: 6546720 (2003-04-01), van Nieuwstadt
patent: 6742330 (2004-06-01), Genderen
patent: 6823663 (2004-11-01), Hammerle et al.
patent: 6928359 (2005-08-01), Xu et al.
patent: 6993900 (2006-02-01), Upadhyay et al.
patent: 6996975 (2006-02-01), Radhamohan et al.
patent: 7093427 (2006-08-01), van Nieuwstadt et al.
patent: 2004/0040287 (2004-03-01), Beutel et al.
patent: 2004/0098968 (2004-05-01), van Nieuwstadt et al.
patent: 2005/0282285 (2005-12-01), Radhamohan et al.
patent: 2006/0254258 (2006-11-01), Blakeman et al.
patent: 197 39 848 (1999-03-01), None
patent: 199 03 439 (2000-08-01), None
patent: 1 310 653 (2003-05-01), None
Loehr Matthias
Lueders Hartmut
Mayer Thorsten
Walz Christian
Denion Thomas E
Kenyon & Kenyon LLP
Ronert Bosch GmbH
Tran Diem
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