LNT regeneration strategy to reduce NOx spike

Details LNT regeneration strategy to reduce NOx spike LNT regeneration strategy to reduce NOx spike

2007-02-20

2010-10-12

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, C060S297000, C060S299000, C060S301000, C060S303000, C048S1970FM, C048S198300, C048S198800

Reexamination Certificate

active

07810315

ABSTRACT:
Systems and methods are disclosed for ameliorating NOx slip from a lean NOx trap by reducing the amount of hydrocarbons reaching the lean NOx trap during the early stages of, or in a period immediately preceding, a rich regeneration. In one embodiment, a hydrocarbon absorber is configured downstream from a fuel reformer, but upstream from the lean NOx trap, in order to reduce the quantity of hydrocarbons that reach the lean NOx trap during lean reformer warm-up and rich regeneration phases. In another embodiment, the fueling rate to a fuel reformer configured in an exhaust line upstream from the lean NOx trap is limited to reduce NOx slip.

REFERENCES:
patent: 5740669 (1998-04-01), Kinugasa et al.
patent: 5778667 (1998-07-01), Kinugasa et al.
patent: 5974793 (1999-11-01), Kinugasa et al.
patent: 6109024 (2000-08-01), Kinugasa et al.
patent: 6718756 (2004-04-01), Okada et al.
patent: 6732507 (2004-05-01), Stanglmaier et al.
patent: 6766642 (2004-07-01), Binder et al.
patent: 6846464 (2005-01-01), Montreuil et al.
patent: 6863874 (2005-03-01), Twigg
patent: 6893997 (2005-05-01), Matsumoto et al.
patent: 6912847 (2005-07-01), Deeba
patent: 6932067 (2005-08-01), Takaya et al.
patent: 6959542 (2005-11-01), Taylor et al.
patent: 6973776 (2005-12-01), van Nieuwstadt et al.
patent: 7082753 (2006-08-01), Dalla Betta et al.
patent: 7093428 (2006-08-01), LaBarge et al.
patent: 7101531 (2006-09-01), Kamijo
patent: 7117669 (2006-10-01), Kaboord et al.
patent: 7165393 (2007-01-01), Betta et al.
patent: 7386977 (2008-06-01), Ancimer et al.
patent: 2003/0101713 (2003-06-01), Dalla Betta et al.
patent: 2004/0076565 (2004-04-01), Gandhi et al.
patent: 2006/0010857 (2006-01-01), Hu et al.
patent: WO 2005/049984 (2005-06-01), None

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