De-sulfurization of a NO x adsorber catalyst in a diesel...

Power plants – Internal combustion engine with treatment or handling of... – By means producing a chemical reaction of a component of the...

Reexamination Certificate

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C060S274000, C060S278000, C060S286000, C060S301000

Reexamination Certificate

active

07047730

ABSTRACT:
De-sulfurizing a NOxadsorber catalyst (48) without significantly increasing the temperature of exhaust gases leaving the engine exhaust manifold (42) by using a diesel oxidation catalyst (46) between the exhaust manifold and the NOxadsorber catalyst to elevate exhaust gas temperature entering the NOxadsorber catalyst to suitable de-sulfurizing temperature through control of certain aspects of engine operation (24, 28, 52).

REFERENCES:
patent: 5974791 (1999-11-01), Hirota et al.
patent: 6164064 (2000-12-01), Pott
patent: 6269634 (2001-08-01), Yokota et al.
patent: 6615580 (2003-09-01), Khair et al.

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