Kubota Corporation

Yuichi Tamaki

Mitsugu Okuda

Takashi Onishi

Tomoya Akitomo

Yoshikazu Takemoto

Hideyuki Koyama

Toshio Nakahira

Manabu Miyazaki

Noriyoshi Eguchi

Hozumi Ishida

Masato Ueda

Ryutaro Komura

Katsuaki Arai

Mariko Ban

Tomohiro Sato

A flywheel housingincludes: a main body portionwhich is arranged on a side of an engineof a flywheeland which has a housing portionthat houses the flywheel; and a cover portionwhich is arranged on an opposite side of the flywheelto the engine, and which is connected to the main body portion, and moreover which has an opening portionwith an inner diameter that is smaller than an outer diameter of the flywheel, wherein the cover portionis provided with a recessed portionthat is recessed in a direction of separation from the flywheelon an opposing surfaceto the flywheelin a peripheral portion of an edge of the opening portion

Flywheel housing and engine equipped with flywheel housing

An engine exhaust treatment apparatus, which suppresses thermal damage to an electrothermal ignition apparatus, includes: an exhaust passage; an oxidation catalyst disposed in the exhaust passage; a combustible gas generator; a combustible gas supplying passage; a heat dissipation port opened upstream in the exhaust passage from the oxidation catalyst and in a downstream part of the combustible gas supplying passage, the exhaust passage and the combustible gas supplying passage communicating with each other through the heat dissipation port; and an electrothermal ignition apparatus disposed in the combustible gas supplying passage. Heat of flaming combustion of the combustible gas ignited by the electrothermal ignition apparatus is supplied to the exhaust passage, to raise the temperature of exhaust in the exhaust passage. A heat dissipation plate is attached to an outer projecting portion of the electrothermal ignition apparatus. The outer projecting portion projects outside a wall of the exhaust treatment apparatus.

Exhaust treatment apparatus for engine

It is an object of the present invention to provide an exhaust gas treatment device of an engine capable of preventing matching surfaces of catalyst portions configuring a combustible gas catalyst from being thermally damaged. In the exhaust gas treatment device, combustible gas is produced by combustible gas generating catalyst, exhaust gas heated by combustion of combustible gas is supplied to an exhaust gas treatment portion, the combustible gas generating catalyst comprises an aggregate of a plurality of catalyst portions, each of the catalyst portions includes a matching surface with respect to adjacent one of the catalyst portions, a fastening ring is fitted over the combustible gas generating catalyst in which the matching surfaces of the adjacent catalyst portions are abutted against each other, and the matching surfaces of the adjacent catalyst portions are brought into tight contact with each other by a fastening force of the fastening ring.

Exhaust gas treatment device of engine

An exhaust treatment apparatus for an engine including a combustible gas supplying passage; a heat releasing port opened in an upstream side in the exhaust passage from the oxidation catalyst and in a downstream side in the combustible gas supplying passage, the exhaust passage and the combustible gas supplying passage communicating with each other through the heat releasing port; an ignition apparatus beneath the heat releasing port, the heat of flaming combustion of combustible gas ignited by the ignition apparatus being supplied to the exhaust passage to raise the temperature of exhaust in the exhaust passage; a flame holding plate in a downstream side in the combustible gas supplying passage from the ignition apparatus, an exhaust guiding plate at the top portion of the flame holding plate, the exhaust guiding plate having an upward slope toward a downstream side in the exhaust passage.

Internal combustion engine

Growing community of inventors

Sakai, Japan

Yuichi Tamaki