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

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United States of America Patent

PATENT NO 5974788
SERIAL NO

08921074

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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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Patent Owner(s)

  • FORD GLOBAL TECHNOLOGIES, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Asik, Joseph R Bloomfield Hills, MI 12 516
Hepburn, Jeffrey S Dearborn, MI 7 417
Meyer, Garth M Dearborn, MI 7 358

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