Exhaust gas purification apparatus for an internal combustion en

Details Exhaust gas purification apparatus for an internal combustion en Exhaust gas purification apparatus for an internal combustion en

1992-09-18

1994-05-24

Cole, Richard R.

Power plants

Internal combustion engine with treatment or handling of...

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

422171, 60297, F01N 310

Patent

active

053137922

ABSTRACT:
An exhaust gas purification system includes a transition metal/zeolite first catalyst, a three-way second catalyst, and a noble metal-type third catalyst arranged in that order in the direction of exhaust gas flow in an exhaust conduit of an internal combustion engine capable of fuel combustion at lean air-fuel ratios. NOx which has not been purified by the transition metal/zeolite first catalyst is oxidized by the three-way second catalyst into NO.sub.2, which the noble metal-type third catalyst can easily decompose into N.sub.2 and O.sub.2.

REFERENCES:
patent: 3757521 (1973-09-01), Tourtellotte et al.
patent: 4003976 (1977-01-01), Komatsu et al.
patent: 4071600 (1978-01-01), Schlatter et al.
patent: 4088606 (1978-05-01), Fedor et al.
patent: 4297328 (1981-10-01), Ritscher et al.
patent: 5041270 (1991-08-01), Fujitani

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1965285