Honda Giken Kogyo Kabushiki Kaisha

Nihon Glass Fiber Industrial Co. Ltd.

Ichirou Sudou

Tomoyuki Takewaka

Noritoshi Iwase

Seiichirou Eguchi

Takashi Asai

Yuuichi Katou

An exhaust muffler for an internal combustion engine included in a motorcycle includes a perforated inner pipe (), an outer pipe () coaxially surrounding the inner pipe (), and a glass wool mat () packed in a space between the inner pipe () and the outer pipe (). A three-layer protective structure is formed by winding an inner stainless steel wire mesh () wound around the inner pipe (), winding a stainless steel wool mat () around the inner stainless steel wire mesh (), and winding an outer stainless steel wire mesh () around the stainless steel wool mat (). The glass wool mat () is wound around the three-layer structure. The three-layer structure extends the life of the glass wool mat () even if the temperature and pressure of the exhaust gas discharged by the internal combustion engine increase.

Growing community of inventors

Wako, Japan

Ichirou Sudou