Avl List Gmbh

Hino Motors, Ltd.

Heimo Schreier

Minoru Kowada

Hisaki Torisaka

Thomas Obenaus

Harald Grantner

An exhaust emission control device is provided which is compact in size and has favorable dispersibility of exhaust gas from a muffling structureto an oxidation catalyst. The muffling structurearranged upstream of the oxidation catalyst in a direction D of gas flow has a dispersion platefor dividing the interior of the casinginto dispersion chambersandupstream and downstream in the direction D of gas flow, respectively, and an inner pipeinserted from outside of and into the chamberand with a tip end fixed to the dispersion plateand circumferentially formed with poresandhaving diameters gradually reduced in the order in the direction D of gas flow from upstream to downstream. The dispersion platefacing the dispersion chambersandis formed with a plurality of radially-outward-larger-diametered and radially-inward-smaller-diametered poresand

Exhaust emission control device

An exhaust system including an exhaust emission control device with a post treatment unit (e.g., a selective reduction catalyst) for depuration of exhaust gas flowing therethrough is disclosed. The exhaust system includes a layout that introduces the exhaust gas into the post-treatment unit through a turnabout. An introductory part encircles an inlet end of the post-treatment unit and receives the exhaust gas through an exhaust inlet port from a direction substantially perpendicular to an axis of the selective reduction catalyst. The introduction part is formed with a first depression cambered away from the inlet end of the selective reduction catalyst and approaching toward the inlet end of the selective reduction catalyst as the first depression extends away from the exhaust inlet port and toward an introduction direction of the exhaust gas, thereby promoting uniformity of the exhaust gas flow entering the post-treatment unit.

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Graz, Austria

Heimo Schreier