Method for regenerating particulate filter

This invention provides a method for regenerating a particulate filter that can regenerate a particulate filter with higher efficiency in a shorter time as compared with the prior art technique. This method is a method for forcibly regenerating a catalyst regeneration-type particulate filter (13) be...

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Bibliographische Detailangaben
1. Verfasser:	TORISAKA HISAKI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ENGINES TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS
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Beschreibung
Zusammenfassung:	This invention provides a method for regenerating a particulate filter that can regenerate a particulate filter with higher efficiency in a shorter time as compared with the prior art technique. This method is a method for forcibly regenerating a catalyst regeneration-type particulate filter (13) before which an oxidation catalyst (14) is provided and which is provided along an exhaust pipe (11).In this method, when the exhaust temperature measured between the oxidation catalyst (14) and the filter (13) is below a first preset temperature and at or above a second preset temperature below thefirst preset temperature, post injection is additionally carried out for fuel addition at a timing of non-firing following main injection of fuel around compression top dead center. When the exhaust temperature is at or above the first preset temperature, post injection is stopped and the fuel is directly injected into the exhaust pipe (11) located on the upstream side of the oxidation catalyst (14) for fuel addition.