CATALYTIC CONVERTER COMPONENT AND PROCESS FOR ITS MANUFACTURE
First Claim
1. A process for manufacturing a component for a catalytic converter, comprising taking a ceramic unit prepared by extruding green ceramic product through a die to form an extrusion having a honeycomb substrate structure having a plurality of tubular passages extending along the length of the extrusion, the passages bounded by walls dividing adjacent passages from one another, the unit being obtained by cutting off a length of the extrusion and curing and firing the length of extrusion, the process further comprising flowing insulation material from one end of the unit into selected ones of the elongate passages, and curing the insulating material, the cured injected insulation material forming an internal thermally insulating barrier between a core zone of the unit and a radially outer zone of the unit.
5 Assignments
0 Petitions
Accused Products
Abstract
In a process for manufacturing a catalytic converter component, a ceramic unit is used that has been prepared by extruding green ceramic product through a die to form an extrusion having a honeycomb substrate structure in which tubular passages extend along the extrusion, the passages bounded by walls dividing adjacent passages from one another. The unit is obtained by cutting off a length of the extrusion and curing and firing it. The process further comprises flowing insulation material as by injecting mastic insulation from one end of the unit into selected ones of the elongate passages to fill the selected passages throughout their length, the insulating material then being cured. The passages are selected so that the cured insulation material forms an internal thermal insulating barrier between a core zone of the unit and a radially outer zone of the unit.
11 Citations
15 Claims
- 1. A process for manufacturing a component for a catalytic converter, comprising taking a ceramic unit prepared by extruding green ceramic product through a die to form an extrusion having a honeycomb substrate structure having a plurality of tubular passages extending along the length of the extrusion, the passages bounded by walls dividing adjacent passages from one another, the unit being obtained by cutting off a length of the extrusion and curing and firing the length of extrusion, the process further comprising flowing insulation material from one end of the unit into selected ones of the elongate passages, and curing the insulating material, the cured injected insulation material forming an internal thermally insulating barrier between a core zone of the unit and a radially outer zone of the unit.
- 12. A component for a catalytic converter comprising a unit of cured ceramic extrusion having a honeycomb substrate structure in which a plurality of passages extends along the unit, the passages bounded by walls dividing adjacent passages from one another, selected ones of the passages filled with cured insulation material, the cured insulation material forming an internal thermal insulation barrier between a core zone of the unit and a radially outer zone.
Specification