Ceramic honeycomb catalytic converter.

摘要

A ceramic honeycomb catalytic converter having a novel canning structure capable of stably retaining a thin-walled ceramic honeycomb catalyst (12) within a metal casing (11) for a long period. A retainer member in the form of a ceramic fiber mat (13) is disposed between an inner peripheral surface of the casing and an outer peripheral surface of the honeycomb catalyst, in a compressed state to generate a surface pressure for retaining the honeycomb catalyst in place. The ceramic fiber mat is composed of heat resistant and non-intumescent ceramic fibers, and has a compression characteristic which is substantially free from a significant increase or decrease in a practical use temperature range of the catalytic converter. The casing may be provided with at least one locking member (14,15) for locking the ceramic fiber mat in a flow direction of exhaust gas passed through the honeycomb catalyst.