Exhaust gas purifying apparatus for internal combustion engine

Details Exhaust gas purifying apparatus for internal combustion engine Exhaust gas purifying apparatus for internal combustion engine

2007-01-16

2007-01-16

Tran, Binh Q. (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

C060S274000, C060S286000, C060S297000, C060S301000

Reexamination Certificate

active

11012143

ABSTRACT:
An exhaust gas purifying apparatus for an internal combustion engine having an exhaust system. The exhaust gas purifying apparatus includes a NOx purifying device provided in the exhaust system for purifying NOx in exhaust gases, and a temperature sensor for detecting a temperature of the NOx purifying device. The NOx purifying device has NOx adsorbing capacity and generates ammonia and retains the generated ammonia when the air-fuel ratio is set to a value on the rich side with respect to the stoichiometric ratio. The NOx purifying device purifies NOx with the retained ammonia when the air-fuel ratio is set to a value on a lean side with respect to the stoichiometric ratio. The air-fuel ratio is enriched to a value on the rich side with respect to the stoichiometric ratio so as to increase an amount of reducing components in the exhaust gases flowing into the NOx purifying device.

REFERENCES:
patent: 5964088 (1999-10-01), Kinugasa et al.
patent: 6176079 (2001-01-01), Konrad et al.
patent: 6301878 (2001-10-01), Zhang et al.
patent: 6338244 (2002-01-01), Guenther et al.
patent: 6698188 (2004-03-01), Irisawa et al.
patent: 6732507 (2004-05-01), Stanglmaier et al.
patent: 6742330 (2004-06-01), Genderen
patent: 6959540 (2005-11-01), Itoh et al.
patent: 2004/0040288 (2004-03-01), Eberhard et al.
patent: 0 972 927 (2000-01-01), None
patent: 2000-213337 (2000-08-01), None
patent: 2002-097941 (2002-04-01), None
patent: 1 357 267 (2003-10-01), None
patent: 06-010725 (1994-01-01), None
patent: 6-10725 (1994-01-01), None

Affiliated with

Also associated with

Rating

Exhaust gas purifying apparatus for internal combustion engine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Exhaust gas purifying apparatus for internal combustion engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exhaust gas purifying apparatus for internal combustion engine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3813621