Honeycomb structure, used as carrier for exhaust gas catalyst for automobile IC engine, has open spring damper system formed by sleeve joints in mantle pipe

摘要

Honeycomb body has a honeycomb structure bonded to mantle pipe by joints. The honeycomb structure is shrouded at least partially by inner and outer sleeves, between the mantle pipe and the honeycomb structure. Adjacent components are bonded together by joints, which form an open spring damper system with at least one sleeve, which has structures to compensate for changes at the circumference of the honeycomb structure. Preferred Features: Honeycomb body (1), used as the catalyst carrier body to clean the exhaust gas of an internal combustion motor, has a honeycomb structure (3) bonded to the mantle pipe (4) by joints. The honeycomb structure is shrouded at least partially by an inner sleeve (5) and an outer sleeve (6), in an axial section between the mantle pipe and the honeycomb structure. Adjacent components are bonded together by joints (8-10), which form an open spring damper system (25) with at least one sleeve. One sleeve and/or the other has structures (26) to compensate for changes at the circumference (12) of the honeycomb structure. The inner joints are formed by welding and especially rolling seam welding or laser welding.