Importance

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Abstract

A fixing device includes a silencer and a catalyst mantle. The silencer is communicated with an exhausting route of an internal combustion engine. The silencer has at least one clapboard to divide inner space thereof for forming a plurality of expanding rooms, which are communicated with each other and configured for guiding waste gas. The catalyst mantle is integrated on the clapboard. The catalyst mantle has an admission terminal and an exhaust terminal communicated with the plurality of expanding rooms. A substrate having catalyst coated thereon is arranged in the catalyst mantle between the admission terminal and the exhaust terminal. The present fixing device improves the fixing capacity of the substrate, and decreases the manufacturing steps for arranging the catalyst mantle in the silencer.

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First Claim