Power plants – Internal combustion engine with treatment or handling of... – By means producing a chemical reaction of a component of the...
Reexamination Certificate
2007-01-30
2007-01-30
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, C060S277000, C060S286000, C060S301000
Reexamination Certificate
active
10774490
ABSTRACT:
This is a method for regenerating the NOx catalyst in a NOx purifying system provided in the exhaust passage with a direct reduction type NOx catalyst which directly decomposes the NOx during lean-condition operation and is regenerated at rich-condition operation, and the method prohibiting the rich-condition control when the temperature detected by a catalyst temperature detecting means is within the predetermined temperature range.Thus, when the exhaust gas are temporarily made rich-condition for catalyst regeneration which means recovering the NOx purifying ability of the direct reduction type NOx catalyst arranged in the exhaust passage of the engine, the NOx is prohibited from being discharged into the atmospheric air, and also the purifying ability can surely be recovered.
REFERENCES:
patent: 5526643 (1996-06-01), Mukaihira et al.
patent: 5778666 (1998-07-01), Cullen et al.
patent: 6032461 (2000-03-01), Kinugasa et al.
patent: 6343466 (2002-02-01), Mukaihira et al.
patent: 6427439 (2002-08-01), Xu et al.
patent: 6499291 (2002-12-01), Lang et al.
patent: 6644021 (2003-11-01), Okada et al.
patent: 7-102954 (1995-04-01), None
Uematsu Yutaka
Yokoyama Jin
Isuzu Motors Limited
Staas & Halsey , LLP
Tran Binh Q.
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