Power plants – Internal combustion engine with treatment or handling of... – By means producing a chemical reaction of a component of the...
Reexamination Certificate
2007-06-05
2007-06-05
Nguyen, Tu M. (Department: 3748)
Power plants
Internal combustion engine with treatment or handling of...
By means producing a chemical reaction of a component of the...
C060S276000, C060S295000, C060S297000, C060S300000
Reexamination Certificate
active
11179544
ABSTRACT:
A NOx trap is associated with oxidation catalyst-forming structure integrated in a common medium, and is located in an exhaust line of a motor vehicle diesel engine. The engine can be controlled at least with a rich mixture control strategy and with lean mixture control strategies of level 1 and level 2. The system acquires the temperatures upstream and downstream torn the trap, and on detecting a request to purge sulfate, it compares the temperatures with first and second curves for controlling operation of the engine with a rich mixture if the temperatures lie between said curve, and otherwise with a lean mixture. The system also compares the temperatures with third and fourth curves for controlling operation of the engine to apply the level 2 strategy if the temperatures lie between said curves, Or otherwise to apply the level 1 strategy.
REFERENCES:
patent: 5402641 (1995-04-01), Katoh et al.
patent: 6082100 (2000-07-01), Boegner et al.
patent: 6161377 (2000-12-01), Boegner et al.
patent: 6205773 (2001-03-01), Suzuki
patent: 6378297 (2002-04-01), Ito et al.
patent: 6644021 (2003-11-01), Okada et al.
patent: 6729120 (2004-05-01), Freisinger et al.
patent: 6763657 (2004-07-01), Wachi et al.
patent: 6766641 (2004-07-01), Surnilla et al.
patent: 6823664 (2004-11-01), Nakatani et al.
patent: 6865880 (2005-03-01), Iihoshi et al.
patent: 2005/0217254 (2005-10-01), Uchida et al.
patent: 0 971 101 (2000-01-01), None
patent: 1 350 932 (2003-10-01), None
patent: 2 835 566 (2003-08-01), None
Nguyen Tu M.
Peugeot Citroen Automobiles SA
Seckel Nicolas E.
LandOfFree
System for purging sulfate from a NOx trap located in an... 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 purging sulfate from a NOx trap located in an..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for purging sulfate from a NOx trap located in an... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3812153