METHODS AND SYSTEM FOR CATALYST REACTIVATION

Embodiments for reactivating a catalyst are provided. In one example, a method for reactivating a catalyst coupled to an engine comprises when the engine is restarted following deactivation, adjusting a degree of fuel enrichment based on an engine off duration and an engine air amount during the res...

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Bibliographische Detailangaben
Hauptverfasser: Ranspach Paul Mahlon, Uphues Marc G, Lehmen Allen
Format: Patent
Sprache:eng
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Zusammenfassung:Embodiments for reactivating a catalyst are provided. In one example, a method for reactivating a catalyst coupled to an engine comprises when the engine is restarted following deactivation, adjusting a degree of fuel enrichment based on an engine off duration and an engine air amount during the restart.