Patent ID: 7048896
Filing Date: 2006-05-23
Classification: F01N

Abstract:
1. A catalyst carrier body, comprising: a honeycomb body having layers of sheet metal, an outer region, at least one axial subregion, an end surface and an axial extent, said layers of sheet metal having radially outward end regions, and at least some of said layers of sheet metal structured to form channels in said honeycomb body through which an exhaust gas can flow; a jacket tube having an inner wall surface at least partially enclosing said honeycomb body, said jacket tube connected to said honeycomb body by technical joining only in said at least one axial subregion; and a sleeve having an axial length less than said axial extent of said honeycomb body, said sleeve having an outer circumferential surface coming to bear substantially against part of said inner wall surface of said jacket tube at a contact area, said sleeve disposed on said outer region of said honeycomb body near said end surface, said sleeve having an inner circumferential surface connected by technical joining to said end regions of said layers of sheet metal at said end surface for preventing flapping of said end regions, and said sleeve having at least one microstructure for reducing said contact area between said sleeve and said jacket tube.