Honda Giken Kogyo Kabushiki Kaisha

Yutaka Hirayama

Ikuo Kajitani

Tadayoshi Hayashi

Sakuji Arai

Yutaka Noritake

A system for collecting and catalytically cleaning exhaust gases from an engine which is particularly suited for an arrangement wherein the catalyst is in close proximity to the exhaust ports of the engine. Exhaust pipes are employed having common walls extending longitudinally therethrough to separate and convey exhaust gases from two separate cylinders to a common manifold. The manifold is arranged to provide a mixing of the exhaust from a plurality of cylinders and to direct that homogeneous flow to the catalyst. A restriction is provided at the outlet of the manifold chamber and before an expansion chamber into the catalyst. This outlet and the expansion chamber are designed to provide maximum efficiency in distribution of gases to the catalyst and also provide minimum gas flow disruption and back pressure.

Exhaust system

A device for supporting a cylindrical catalyst block includes a tubular cushion member mounted within a casing and encircling the catalyst block. An end member fixed within the casing carries an annular cushion. A ring is interposed between the annular cushion and the end face of the catalyst block. Interengaging parts are provided for preventing rotation of the ring with respect to the casing.

Growing community of inventors

Kawagoe, Japan

Yutaka Hirayama