Engine after-treatment controls using dosing below catalyst light-off temperature

A method of controlling dosing of a hydrocarbon fuel into the exhaust gas of a combustion engine upstream of a particulate filter when the exhaust gas temperature into an oxidation catalyst upstream of a particulate filter has dropped below the light-off temperature of the catalyst.

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Bibliographische Detailangaben
Hauptverfasser: Baird, Matthew T, Radwan, Amr M, Sisken, Kevin D, Pham, Bryant C
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A method of controlling dosing of a hydrocarbon fuel into the exhaust gas of a combustion engine upstream of a particulate filter when the exhaust gas temperature into an oxidation catalyst upstream of a particulate filter has dropped below the light-off temperature of the catalyst.