Exhaust gas treatment method and device

Details Exhaust gas treatment method and device Exhaust gas treatment method and device

2005-09-13

2005-09-13

Denion, Thomas (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

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

C060S274000, C060S301000

Reexamination Certificate

active

06941747

ABSTRACT:
A method of treating NOx emmissions in the exhaust gas of an internal combustion engine having catalyst means including at least a first catalyst converter capable of treating NOx, the method including operating the engine in a first mode to promote a first set of conditions and in a second mode to promote a second set of conditions, wherein the first mode of operation includes operating the engine with a lean air-fuel ratio, and the second mode of operation includes operating the engine with a stoichiometic air-fuel ratio.

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Derwent Abstract Accession No. 2000-287338/25, JP 2000080913 A (Toyota Jidosha KK) Mar. 21, 2000 Abstract.

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