Interrelated power delivery controls – including engine control – Transmission control – Exhaust emission control
Reexamination Certificate
2006-06-20
2006-06-20
Wright, Dirk (Department: 3681)
Interrelated power delivery controls, including engine control
Transmission control
Exhaust emission control
C060S286000, C060S295000
Reexamination Certificate
active
07063642
ABSTRACT:
One or more parameters for denitration or desulfations of a LNT is varied, whereby the saturation of NOx and/or SOx in the LNT is reduced to a lower level when an operating state makes the LNT otherwise less effective or places a greater demand for conversion efficiency on the LNT. The operating state can relate to whether the LNT is at the limit of its effective operating temperature range, a degree of poisoning, or an engine operating state. Selectively tolerating high degrees of sulfur poisoning or NOx saturation during periods of low exhaust flow allows the efficiency of denitrations and/or desulfations to be increased over a large portion of a vehicle's operating cycle, particularly when the engine uses a CVT. Another concept relates to a power generation system comprising an engine tuned to efficiently operate in a narrow speed range for all levels of power output.
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Hu Haoran
McCarthy, Jr. James Edward
Stover Thomas
Eaton Corporation
Keller, LLC Paul V.
Wright Dirk
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