Method and apparatus for desulfating a no.sub.x trap

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5974788
SERIAL NO

08921074

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method and apparatus for desulfating a NO.sub.x trap is proposed wherein the SO.sub.x purge temperature is achieved by modulating the amplitude of the A/F of the mixture supplied to the engine thereby storing oxygen in the trap during lean engine cylinder events and generating the required exotherm during rich engine cylinder events.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
FORD GLOBAL TECHNOLOGIES, INC.DEARBORN, MI1740

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Asik, Joseph R Bloomfield Hills, MI 12 479
Hepburn, Jeffrey S Dearborn, MI 7 392
Meyer, Garth M Dearborn, MI 7 328

Cited Art Landscape

Patent Info (Count) # Cites Year
 
FORD GLOBAL TECHNOLOGIES, INC. (4)
* 5771685 Method for monitoring the performance of a NO.sub.x trap 111 1996
* 5746049 Method and apparatus for estimating and controlling no x trap temperature 85 1996
* 5758493 Method and apparatus for desulfating a NO.sub.x trap 92 1996
* 5832722 Method and apparatus for maintaining catalyst efficiency of a NO.sub.x trap 94 1997
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
GM GLOBAL TECHNOLOGY OPERATIONS LLC (2)
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BAYER AKTIENGESELLSCHAFT (1)
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* Cited By Examiner