Exhaust gas purification device of internal combustion engine

Details Exhaust gas purification device of internal combustion engine Exhaust gas purification device of internal combustion engine

2005-11-01

2005-11-01

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...

C060S295000, C060S301000, C060S303000

Reexamination Certificate

active

06959540

ABSTRACT:
A catalyst (22) suitable for reduction of the NOxin an exhaust gas by ammonia in the presence of excess oxygen is arranged in the exhaust passage (18, 21) of an internal combustion engine. An aqueous urea solution is fed through a flow control valve (33) to the inside of the exhaust passage (21) upstream of the catalyst (22). When the temperature of the catalyst (22) is low, a large amount of the aqueous urea solution is fed to make the urea contained in the aqueous urea solution be stored in the catalyst (22). When the engine is accelerated and the temperature of the catalyst (22) rises, ammonia is released at a little at a time from the inside of the catalyst (22) and the NOxin the exhaust gas is reduced by the released ammonia.

REFERENCES:
patent: 3072457 (1963-01-01), Bloch
patent: 5272871 (1993-12-01), Oshima et al.
patent: 5369956 (1994-12-01), Daudel et al.
patent: 5522218 (1996-06-01), Lane et al.
patent: 5531068 (1996-07-01), Kass et al.
patent: 5628186 (1997-05-01), Schmelz
patent: 5643536 (1997-07-01), Schmelz
patent: 5746052 (1998-05-01), Kinugasa et al.
patent: 5833932 (1998-11-01), Schmelz
patent: 5845487 (1998-12-01), Fraenkle et al.
patent: 5884476 (1999-03-01), Hirota et al.
patent: 5918555 (1999-07-01), Winegar
patent: 5924280 (1999-07-01), Tarabulski
patent: 5992141 (1999-11-01), Berriman et al.
patent: 6125629 (2000-10-01), Patchett
patent: 6415602 (2002-07-01), Patchett et al.
patent: 6427439 (2002-08-01), Xu et al.
patent: 6449945 (2002-09-01), van Nieuwstadt
patent: 6546720 (2003-04-01), van Nieuwstadt
patent: 6698191 (2004-03-01), Xu et al.
patent: 6713030 (2004-03-01), Chandler et al.
patent: 6742326 (2004-06-01), Xu et al.
patent: 6755014 (2004-06-01), Kawai et al.
patent: 43 15 278 (1992-12-01), None
patent: 0 515 857 (1992-12-01), None
patent: 0 617 199 (1994-09-01), None
patent: 63-57810 (1988-03-01), None
patent: 3-213614 (1991-09-01), None
patent: 3-129712 (1991-12-01), None
patent: 4-11248 (1992-02-01), None
patent: 4-215821 (1992-08-01), None
patent: 5-285343 (1993-11-01), None
patent: 5-296029 (1993-11-01), None
patent: 5-317725 (1993-12-01), None
patent: 6-257487 (1994-09-01), None
patent: 6-294318 (1994-10-01), None
patent: 6-343877 (1994-12-01), None
patent: 7-12660 (1995-03-01), None
patent: 7-57303 (1995-06-01), None
patent: 7-232035 (1995-09-01), None
patent: 8-121154 (1996-05-01), None
patent: 9-173782 (1997-07-01), None
patent: 2722990 (1997-11-01), None
patent: WO 96 04980 (1996-02-01), None
patent: WO 99 55446 (1999-11-01), None

Affiliated with

Also associated with

Rating

Exhaust gas purification device of 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 purification device of internal combustion engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exhaust gas purification device of internal combustion engine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3507211