Structure for electrically heatable catalytic core

Details Structure for electrically heatable catalytic core Structure for electrically heatable catalytic core

F - Mech Eng,Light,Heat,Weapons

01

N

F01N 3/28 (2006.01) B01D 53/94 (2006.01) B01J 35/00 (2006.01) B01J 35/04 (2006.01) F01N 3/20 (2006.01)

Patent

CA 2050230

ABSTRACT There is provided an improved electrically heatable core for an electrically heatable catalytic converter. The core is characterized by corrugated thin metal strips and flat thin metal strips in alternating relation with each other and secured to an electrically conductive central core or tube. Alternating with the corrugated thin metal strips and the flat thin metal strips are areas of brazing metal in an axially staggered pattern. These strips are spirally wound and fused to braze them together in a unified monolith. A retainer shell is supplied to hold the monolith together. The core is placed in a housing fitted with insulated means for conducting electric current to the monolith to effect heating. The housing is then inserted in an exhaust line where it is effective to control start-up pollution and where the monolith is constrained against telescoping.

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