Method and system for controlling a regeneration cycle of an emission control device

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6615577
APP PUB NO 20020189235A1
SERIAL NO

09884248

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A system and method for optimizing the regeneration cycle of an emission control device, such as a lean NO.sub.x trap, is disclosed wherein the device is filled to a predetermined fraction of its existing capacity and is then completely emptied during a device purge. As device capacity is substantially reduced, as indicated by the actual fill time becoming equal to or less than a predetermined minimum fill time, a device desulfation event is performed to attempt to restore device capacity. A programmed computer controls the fill and purge times based on the amplitude of the voltage of a switching-type oxygen sensor and the time response of the sensor. The frequency of the purge, which ideally is directly related to the device capacity depletion rate, is controlled so that the device is not filled beyond the storage capacity limit.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
FORD GLOBAL TECHNOLOGIES, LLCDEARBORN, MI8377

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Asik, Joseph Richard Bloomfield Hills, MI 9 218
Meyer, Garth Michael Dearborn, MI 15 166

Cited Art Landscape

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* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
PH2 Solutions, Inc. (1)
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MAGNETI MARELLI POWERTRAIN S.P.A. (1)
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PEUGEOT CITROEN AUTOMOBILES SA (3)
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* Cited By Examiner