| 摘要 |
PROBLEM TO BE SOLVED: To provide a new exhaust gas catalyst device that presupposes formal clearing of exhaust emission regulations, is easy to manufacture and can realize various technical variations according to mounting targets, a manufacturing method thereof, and a muffler unit with an exhaust gas catalyst device. SOLUTION: The device comprises an outer cylinder 10 opening at a front and a rear end and allowing exhaust gas G emitted from an engine to flow therein, and a honeycomb structure 11 housed and held in the outer cylinder 10; and purifies the exhaust gas G by means of a catalyzer substance attached to a passage surface. The honeycomb structure 11 includes at least one flared tube element 12 with flare portions 13 formed by press working, and the flared tube element 12 is formed from a tubular member of a circular section or the like as a starting material. |
