| 摘要 |
PURPOSE:To install a sealing member with ease in a catalytic converter, by packing a sealing member with a combustible film after compressing the sealing member, winding the packed sealing member around a monolithic catalyst carrier, installing the same in the casing of the catalytic converter, and then expanding the sealing member by burning out the combustible film. CONSTITUTION:In manufacturing a catalytic converter, a sealing member 4 made of a fiber material and having a thickness greater than the clearance delta between a casing 1 and a monolithic catalyst carrier 2 is prepared at first and it is compressed to such an extent that the thickness is made smaller than the clearances delta. Then, the sealing member 4 is inserted into a combustible film 5 and an enclosed sheet 6 of the combustible film is formed by evacuating the inside of the combustible film 5 and isolating the sealing member 4 from the atmosphere. Subsequently, the sheet 6 is wound around said carrier 2, and then the carrier 2 is installed in the casing 1. In this state, the sealing member 4 is expanded by introducing exhaust gas of an engine into the casing 1 and burning out the combustible film 5, whereby the sealing member 4 expanded through absorption of gas is supported firmly between the carrier 2 and the casing 1. |
