System and method for controlling amount of sulfur on three-way catalyst by limiting deceleration cylinder cut off

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United States of America Patent

PATENT NO 11098666
SERIAL NO

17035088

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Abstract

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A system includes a three-way catalyst (TWC) sulfur load module, a cylinder/fuel cutoff module, a fuel control module, and a valve control module. The TWC sulfur load module is configured to determine an amount of sulfur deposited on a three-way catalyst of an engine in a vehicle. The cylinder/fuel cutoff module is configured to determine whether to enable deceleration cylinder cutoff (DCCO) based on the amount of sulfur deposited on the three-way catalyst. The fuel control module is configured to control a fuel injector to selectively stop fuel injection in the engine when DCCO is enabled. The valve control module is configured to selectively maintain intake and exhaust valves of the engine in a closed position when DCCO is enabled.

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Patent Owner(s)

Patent OwnerAddress
GM GLOBAL TECHNOLOGY OPERATIONS LLCP O BOX 300 MAIL CODE 482-C23-B21 DETROIT MI 48265-3000

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dufresne, Randy L Orchard Lake, US 4 9
Feldmann, Scott T South Lyon, US 13 170
Hutmacher, Jeffrey M Fowlerville, US 15 73
Lucido, Michael J Northville, US 40 283
Ramappan, Vijay A Novi, US 8 20
Smith, Michael A Clarkston, US 405 16389

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