ELECTRICALLY HEATED CATALYST

The electricity is suppressed from flowing through a case (5) of an electric heating catalyst (1). The electric heating catalyst (1) comprises a heat generating element (3) which generates heat by applying electricity; a case (5) which accommodates the heat generating element (3); an inner tube (4)...

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Bibliographische Detailangaben
Hauptverfasser:	YOSHIOKA, MAMORU, KUMAGAI, NORIAKI
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY 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 THEIR RELEVANT APPARATUS TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	The electricity is suppressed from flowing through a case (5) of an electric heating catalyst (1). The electric heating catalyst (1) comprises a heat generating element (3) which generates heat by applying electricity; a case (5) which accommodates the heat generating element (3); an inner tube (4) which is provided between the heat generating element (3) and the case (5); and a mat (6) which is provided between the heat generating element (3) and the inner tube (4) and between the inner tube (4) and the case (5) and which insulates the electricity; wherein the inner tube (4) protrudes from the mat (6) toward an upstream side and a downstream side in a flow direction of an exhaust gas, the inner tube (4) is composed of at least two substances having different thermal conductivities, the substance (42) having the lower thermal conductivity is arranged on an inner side as compared with a surface, and the substance (41) having the higher thermal conductivity is arranged to surround the substance having the lower thermal conductivity.