Erosion resistant mounting composite for catalytic converter
AssigneeMinnesota Mining and Manufacturing Company
InventorRichard P. Merry
Life of this patent
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Abstract
A catalytic converter or diesel particulate trap having a monolithic ceramic element or diesel particulate filter mounted within a metallic casing by a resilient, flexible, erosion resistant mounting composite. The erosion resistant mounting composite is comprised of an intumescent mounting mat protected on at least one lateral edge by a strip of metal fabric.
Claims18
An improved catalytic converter including a metallic casing, a ceramic catalytic element disposed within the casing, and a mounting composite disposed between the catalytic element and the metallic casing for positioning the catalytic element within the casing and for absorbing mechanical and thermal shock, said mounting composite comprising a resilient, flexible, high temperature resistant intumescent mounting mat having a lateral edge, wherein the improvement comprises:
- a strip of metal fabric positioned between at least a portion of the lateral edge of said mounting mat and said casing so to cover the lateral edge in order to prevent erosion of said mounting composite.
An improved diesel particle trap including a metallic casing, a ceramic diesel particulate filter disposed within the casing, and a mounting composite disposed between the diesel particulate filter and the metallic casing for positioning the particulate filter and for absorbing mechanical and thermal shock, said mounting composite comprising a resilient, flexible, high temperature resistant intumescent mounting mat having a lateral edge, wherein the improvement comprises:
- a strip of metal fabric positioned between at least a portion of the lateral edge of said mounting mat and said casing, so as to cover the lateral edge, in order to prevent erosion of said mounting composite.
An improved diesel particulate trap according to clam 11 wherein said inorganic fibrous material is selected from a group consisting of asbestos, soft glass fiber, alumina whisker, alumina-silica fiber or zirconia-silica fiber.
Dependencies are inferred from the claim text.