Power plants – Internal combustion engine with treatment or handling of... – By means producing a chemical reaction of a component of the...
Patent
1993-03-22
1994-11-22
Cole, Richard R.
Power plants
Internal combustion engine with treatment or handling of...
By means producing a chemical reaction of a component of the...
60286, 60301, 422176, 422196, F01N 310
Patent
active
053657349
ABSTRACT:
A plurality of lean NOx catalysts are installed in passages of a dual passage portion of an exhaust conduit of an internal combustion engine. A space velocity changing means including a valve is provided at a connecting portion of the passages so that the amount of exhaust gas flowing through the lean NOx catalysts is altered periodically. When a space velocity of exhaust gas at the lean NOx catalyst changes from a low velocity to a high velocity, an NOx purification rate of the lean NOx catalyst increases momentarily. By repeatedly generating the NOx purification rate increased conditions, the NOx purification rate of the NOx purification apparatus including the plurality of lean NOx catalysts is greatly increased.
REFERENCES:
patent: 3181923 (1965-05-01), Frilette et al.
patent: 3282046 (1966-11-01), Walker et al.
patent: 4438627 (1984-03-01), Gotoh et al.
patent: 4597262 (1986-07-01), Retallick
patent: 4867953 (1989-09-01), Riekert et al.
patent: 5089236 (1992-02-01), Clerc
patent: 5125231 (1992-06-01), Patil et al.
Cole Richard R.
Heyman L.
Toyota Jidosha & Kabushiki Kaisha
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