Exhaust aftertreatment system and method of use for lean...

Details Exhaust aftertreatment system and method of use for lean... Exhaust aftertreatment system and method of use for lean...

2006-05-03

2009-08-11

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, C060S287000, C060S292000, C060S295000, C060S297000, C060S303000, C048S1970FM, C048S198700

Reexamination Certificate

active

07571602

ABSTRACT:
The present invention is an aftertreatment system for lean burn internal combustion engines. The present invention provides a multiple branch lean NOx trap, or LNT, with a diverter valve operable to selectively direct lean exhaust flow to one portion of the LNT while another portion of the LNT regenerates in a low oxygen environment. Additionally, the present invention employees a continuously operating side stream exhaust fuel reformer that delivers a reductant, such as partially oxidized (POx) gas or reformate, to the LNT for regeneration. The present invention also provides a method of exhaust aftertreatment of a lean burn internal combustion engine utilizing the system provided.

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International Search Report for PCT/US06/17017 mailed Jul. 24, 2007 and corresponding the to subject application.

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