Power plants – Internal combustion engine with treatment or handling of... – By means producing a chemical reaction of a component of the...
Reexamination Certificate
2007-11-13
2011-12-13
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, C060S295000, C060S301000, C060S303000
Reexamination Certificate
active
08074443
ABSTRACT:
An exhaust aftertreatment system is provided with a large channel combustor, a fuel reformer, and a lean NOXtrap. The lean NOXtrap is denitrated by steps comprising: heating the fuel reformer to steam reforming temperatures by introducing vaporized fuel to the large channel combustor and combusting a portion of the vaporized fuel under lean conditions, then making the exhaust-injected fuel mixture overall rich, whereby the fuel reformer produces syn gas that denitrates the lean NOXtrap. The fuel reformer has a low thermal mass, whereby it is designed to heat to at least about 500° C. and catalyze steam reforming reaction with each denitration. The large channel combustor is a monolith having an average channel size larger than the fuel reformer and a thermal mass no more than about 20% that of the fuel reformer, whereby the large channel combustor facilitates low temperature startup of the fuel reformer.
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Cizeron Joel M.
Dalla Betta Ralph Albert
Sheridan David R.
Denion Thomas
Eaton Corporation
Keller Paul V.
Tran Diem
LandOfFree
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