Hirotec Corporation

Yumex Corporation

Naoyuki Kobayashi

Kazuya Tominaga

Katsumi Tateiwa

Yasuhiko Fukumoto

Kazuo Tanigawa

Etsuo Kosaka

Teruhiko Nishihara

A method of manufacturing a catalytic converter includes the steps of: a detecting step for detecting a pressing force at a time when a catalyst () is press-fitted into an outer cylindrical housing (); a calculating step for calculating a diameter reduction, by which a clearance value between the outer cylindrical housing () and the catalyst () is set to a desired target value, based on the pressing force detected by the detecting step; and a swaging step for reducing a diameter of the outer cylindrical housing () based on the diameter reduction calculated by the calculating step.

Method of manufacturing catalytic converters

A structure of an exhaust manifold branch collecting portion where a plurality of pipe members are joined integrally at their respective downstream ends, wherein a thickened portion is provided at the downstream end of at least one pipe member on a center side of the exhaust manifold branch collecting portion.

Structure of an exhaust manifold branch collecting portion

Growing community of inventors

Hiroshima, Japan

Naoyuki Kobayashi