Multi-stage regeneration of particulate filter

A method of regenerating a particulate filter utilizes two temperature levels, with the first, lower, level removing stored hydrocarbons and urea from an SCR catalyst. The second, higher, level then follows for filter regeneration. Because the regeneration occurs after the SCR catalyst has been purg...

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Hauptverfasser:	GRAHAM GEORGE WADE, MCCABE ROBERT WALTER, RUONA WILLIAM CHARLES, WATKINS WILLIAM LEWIS HENDERSON, XU LIFENG
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 STEAM ENGINES WEAPONS
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creator	GRAHAM GEORGE WADE MCCABE ROBERT WALTER RUONA WILLIAM CHARLES WATKINS WILLIAM LEWIS HENDERSON XU LIFENG
description	A method of regenerating a particulate filter utilizes two temperature levels, with the first, lower, level removing stored hydrocarbons and urea from an SCR catalyst. The second, higher, level then follows for filter regeneration. Because the regeneration occurs after the SCR catalyst has been purged of hydrocarbons and urea, for example, the temperature experienced by the SCR catalyst during regeneration is reduced. In this way, SCR degradation may be reduced.
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subjects	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 STEAM ENGINES WEAPONS
title	Multi-stage regeneration of particulate filter
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