Filter regeneration

A method for regenerating a particulate filter 15 in an exhaust of a vehicle having at least one pressure sensor 124, 126 for enabling the restriction through the particulate filter to be determined. The method for regeneration of the particulate filter comprises performing a regeneration of the par...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	DAVID CHESTER WASKIEWICZ, BRADLEY DANE GRESENS, GOPAL KRISHNA CHAMARTHI, MICHIEL J VAN NIEUWSTADT, NORMAN HIAM OPOLSKY, PETER MITCHELL LYON, EDWIN ALLEN KRENZ
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION STEAM ENGINES TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	A method for regenerating a particulate filter 15 in an exhaust of a vehicle having at least one pressure sensor 124, 126 for enabling the restriction through the particulate filter to be determined. The method for regeneration of the particulate filter comprises performing a regeneration of the particulate filter 15 when a determined value of flow restriction exceeds a preset threshold. A prevailing pressure reading of the sensor serves alone to determine the value of flow restriction under accurate sensing conditions. Under inaccurate sensing conditions, the flow restriction is determined using a previous reading provided by the sensor while operating under accurate sensing conditions and an independent estimate of additional soot loading based upon engine operating conditions subsequent to the previous sensor reading. Inaccurate sensing conditions may be low exhaust flow rates and engine transients.