Patent ID: 7981498
Filing Date: 2011-07-19
Classification: B01J,F01N,Y02T,Y10T

Abstract:
1. A honeycomb body, comprising: an entry surface and an exit surface defining a honeycomb body width therebetween; subregions disposed between said entry surface and said exit surface; an inner region of said honeycomb body; layers, including adjacent layers, extended continuously across said honeycomb body width, having inner walls defining passages leading from said entry surface to said exit surface, said passages having a mean cross-sectional area; a plurality of cavities disposed in said layers in at least one of said subregions, said cavities each being defined by a plurality of mutually aligned holes in said adjacent layers, being free of said inner walls and being shaped and dimensioned to contain at least one spherical free space, said plurality of cavities being accumulated in said inner region of said honeycomb body; said at least one spherical free space having a largest cross-sectional area amounting to at least 10 times said mean cross-sectional area of said passages in said at least one subregion; and not all of said passages intersect a cavity.