Honda Motor Co., Ltd.

Vitesco Technologies Gmbh

Kazuhisa Maeda

Hiroyuki Horimura

Kensuke Honma

Makoto Mitsukawa

Atsushi Murakami

Toshiaki Kimura

Daiji Kawaguchi

Michael Voit

Kosaku Ito

Francois Jayat

Sven Seifert

Hiromitsu Takeda

A catalytic device that can increase the durability of a catalyst support with holes is provided. A flat plate and a corrugated plate have a plurality of holes, a joint area between the flat plate and the corrugated plate is provided in a first upstream area including one end of a catalyst support, and a joint area between the catalyst support and an outer cylinder is provided in a second upstream area that includes the first upstream area and is wider than the first upstream area in the direction of an axis.

Catalytic device

Provided is a catalyst device that makes it possible to efficiently purify exhaust gas. A catalyst device that comprises: a carrier that is formed by stacking and rolling a metal-foil-shaped flat plate and a metal-foil-shaped corrugated plate and that carries a catalyst; and an outer cylinder that houses the carrier and supports the carrier such that one end part of the carrier is oriented toward an exhaust gas upstream side and another end part of the carrier is oriented toward an exhaust gas downstream side. The flat plate and the corrugated plate have a plurality of holes and are covered by a coating film that includes a catalyst substance. The coating film that covers the downstream side of the holes is thicker than the coating film that covers the upstream side of the holes.

Catalyst device

Provided is a catalyst device that can equalize the strength of a carrier in the direction of the flow of exhaust gas. According to the present invention, a flat plate and a corrugated plate have a plurality of holes. When the flat plate and the corrugated plate are in a flat state before being made into a carrier, the plurality of holes form: a plurality of first rows that run along a first direction that is parallel to the axial direction of the carrier; and a plurality of second rows that run along a second direction that is orthogonal to the first direction. As seen from the second direction, the holes in one second row and the holes in the other second row of adjacent second rows have portions that overlap each other.

A catalyst converter having a retaining mat with a thickness wherein the apparent density during assembling becomes 0.25 g/cmor more and less than 0.51 g/cmand the outside diameter Dof a catalyst retainer is set according to interference of the retaining mat in passing through a press-in tool and interference of the retaining mat after being pressed into a retaining tube. The retaining mat is formed of a non-expandable inorganic fiber sheet. A pressing force moves the catalyst retainer in the axial direction with respect to the retaining tube while the catalyst converter device is used with the length Lalong the longitudinal direction of the catalyst retainer in the retaining mat wound around the catalyst retainer being set longer than the winding diameter Dof the retaining mat around the catalyst retainer so that a retaining force R greater than the pressing force F can be secured.

Catalyst converter device for purifying exhaust gas and saddle-ride type vehicle

Growing community of inventors

Wako, Japan

Kazuhisa Maeda