Exhaust gas purifying catalyst

Details Exhaust gas purifying catalyst Exhaust gas purifying catalyst

2006-11-14

2006-11-14

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...

C060S274000, C060S295000, C060S301000, C060S303000

Reexamination Certificate

active

07134272

ABSTRACT:
An exhaust gas purifying system includes, an internal combustion engine, an exhaust passage of exhaust gas from the internal combustion engine, a hydrogen-catalyst provided in the exhaust passage, an NOx purifying catalyst provided on a downstream of the hydrogen-catalyst of the exhaust passage to reduce nitrogen oxides, and a control unit. The hydrogen-catalyst has a function of transmitting or generating hydrogen. In the purifying system, the control unit executes enrichment condition control for reducing an air/fuel ratio (A/F)r during enrichment to prolong a time of enrichment (tr) as a flow rate of exhaust gas emitted from the internal combustion engine is lowered in intermittent enrichment of the air/fuel ratio.

REFERENCES:
patent: 5412946 (1995-05-01), Oshima et al.
patent: 5599758 (1997-02-01), Guth et al.
patent: 6244044 (2001-06-01), Bartley
patent: 6508057 (2003-01-01), Bouchez et al.
patent: 6557342 (2003-05-01), Suga et al.
patent: 6560958 (2003-05-01), Bromberg et al.
patent: 6651424 (2003-11-01), Twigg
patent: 2001/0004832 (2001-06-01), Hanaki et al.
patent: 1 094 206 (2001-04-01), None
patent: 1 108 863 (2001-06-01), None
patent: 2001-234737 (2001-08-01), None
patent: WO 00/53903 (2000-09-01), None
patent: WO 01/37978 (2001-05-01), None

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