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US 8,147,763 B2Granted
Honeycomb body having a contraction limiter
AssigneeEMITEC Gesellschaft fuer Emissionstechnologie mbH
InventorWolfgang Maus
Life of this patent
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Abstract
Honeycomb bodies, especially those used in an exhaust system of an internal combustion engine, contain a housing and a metal matrix with an average starting diameter. The matrix is connected to the housing, whereby at least one contraction limiter that causes an outward directed tensile stress in at least one part of the matrix is provided. The average starting diameter of the matrix is reduced by 5%, preferably by a maximum of 2%, during and/or after being subjected to thermal stress.
Claims28
A honeycomb body, comprising:
- a housing;
- a matrix having an average initial diameter and connected to said housing;
- and
- at least one contraction limiter configured for imparting an outwardly directed tensile stress in at least one part of said matrix for preventing the average initial diameter of said matrix from decreasing by more than 5% after repeated thermal alternating stresses in the range between 600° C. and 1050° C.
1 more element
Dependencies are inferred from the claim text.