EXHAUST EMISSION CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE

PROBLEM TO BE SOLVED: To provide an exhaust emission control device of an internal combustion engine in which heat damage to a selective reduction type NOx catalyst is avoided. SOLUTION: This exhaust emission control device comprises a casing 22 into which exhaust gases from an internal combustion e...

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Bibliographische Detailangaben
Hauptverfasser:	ONODA NAOKI, SASAKI KENJI, KAMITAKI YASUSHI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION 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 LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION STEAM ENGINES TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide an exhaust emission control device of an internal combustion engine in which heat damage to a selective reduction type NOx catalyst is avoided. SOLUTION: This exhaust emission control device comprises a casing 22 into which exhaust gases from an internal combustion engine 8 is introduced, a particulate filter 34 for arresting particulates in the exhaust gases and a selective reduction type NOx catalyst 48 disposed on the downstream side of the filter and removing NOx in the exhaust gases by adding a reducer which are contained in the casing, a passage 36 formed in the casing, connecting the filter to the NOx catalyst, and returning the flow of the exhaust gases from the filter back to the NOx catalyst, and cooling means 37, 40, 41, 43, 44, 46 for cooling the exhaust gases in the passage. COPYRIGHT: (C)2008,JPO&INPIT