Exhaust gas purification device for an engine

Details Exhaust gas purification device for an engine Exhaust gas purification device for an engine

1997-10-16

1999-08-24

Lopez, F. Daniel

Power plants

Internal combustion engine with treatment or handling of...

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

60274, 60277, 60285, 60303, F01N 300

Patent

active

059410671

ABSTRACT:
An exhaust gas purification device, for an engine having an exhaust passage, said device comprising a catalyst arranged in the exhaust passage for purifying NO.sub.x with a reducing agent. A purification ratio of the NO.sub.x by said catalyst becomes more than a predetermined ratio when a temperature of said catalyst is within a predetermined temperature range. A predetermined amount of a reducing agent is fed to said catalyst. An amount of the reducing agent to be fed is increased with respect to the predetermined amount when a temperature of an upstream end of the catalyst is lower than a lowest value of the predetermined temperature range and a temperature of a downstream end of the catalyst is higher than the lowest value.

REFERENCES:
patent: 5133184 (1992-07-01), Geiger
patent: 5428956 (1995-07-01), Maus et al.
patent: 5617720 (1997-04-01), Achleitner et al.
patent: 5706652 (1998-01-01), Sultan
U.S. Application No. 08/861,292, filed May 21, 1997.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-456633