Device for purifying exhaust gas of internal combustion engine

摘要

PCT No. PCT/JP96/01474 Sec. 371 Date Apr. 15, 1997 Sec. 102(e) Date Apr. 15, 1997 PCT Filed May 30, 1996 PCT Pub. No. WO96/38657 PCT Pub. Date May 12, 1996In an electrically heated catalyst support, when necessary, reinforcing layers are formed on the inner circumference and the outer circumference of a honeycomb body. On an end surface of the honeycomb body on the downstream side of exhaust gas, there are provided a plurality of insulating ceramic bars on the outer circumferential layer and/or the inner circumferential layer in such a manner that the insulating ceramic bars cross a non-reinforcing layer of the honeycomb body. End portions of the ceramic bars are held on the reinforcing layer by pins or a ring-shaped holding member joined to an external metallic cylinder. Due to the foregoing arrangement, telescoping of the honeycomb body in the direction of gas flow and damage of the metallic foil can be prevented without obstructing the generation of heat when electricity is supplied. Accordingly, durability of the catalyst support can be remarkably enhanced.