초록 ▼

A device suitable for use as a catalytic converter for purification of the exhaust gases from an internal combustion engine at continuous operating temperatures in excess of 1600°F. and up to 2500°F. includes a frangible ceramic monolith catalyst element resiliently mounted in a metallic housing. Th

A device suitable for use as a catalytic converter for purification of the exhaust gases from an internal combustion engine at continuous operating temperatures in excess of 1600°F. and up to 2500°F. includes a frangible ceramic monolith catalyst element resiliently mounted in a metallic housing. The monolith is wrapped in a thermally insulating layer of ceramic fibers capable of withstanding continuous exposure to temperatures of at least 2000°F. A layer of intumescent material disposed between the housing and the ceramic fiber layer resiliently secures the monolith in the housing. A method of manufacture of such a device is also described.

대표청구항 ▼

Device for treatment of exhaust gases from an internal combustion engine comprising: (a) a housing having an inlet at one end and an outlet at its opposite end through which exhaust gases flow; (b) a frangible ceramic monolith resiliently mounted within said housing, said monolith having an outer su

Device for treatment of exhaust gases from an internal combustion engine comprising: (a) a housing having an inlet at one end and an outlet at its opposite end through which exhaust gases flow; (b) a frangible ceramic monolith resiliently mounted within said housing, said monolith having an outer surface and an inlet end face at one end in communication with said inlet of said housing and an outlet end face at its opposite end in communication with said outlet of said housing; (c) a ceramic fiber layer in contact with and covering at least a portion of said outer surface of said monolith; and (d) an intumescent layer disposed between said housing and said ceramic fiber layer. A method of mounting a gas-pervious ceramic monolith catalyst element having inlet and outlet end faces within a housing comprising the steps of: (a) wrapping a layer of ceramic fiber paper around the monolith between its inlet and outlet end faces; (b) wrapping said ceramic fiber paper layer wrapped monolith with intumescent sheet material to form an assembly; and (c) forming a housing around said assembly in which said ceramic fiber paper and intumescent sheet material are radially compressed between said monolith and said housing.