Honda Giken Kogyo Kabushiki Kaisha

Hitachi Powdered Metals Co., Ltd.

Toshiyasu Komatsu

Kenji Hirose

Kazuo Yoshida

Hiromitsu Sato

Kenji Fukuda

Kazuo Asaka

Satoru Shinzaki

Katsuaki Sato

Tatsuro Horie

Akihiro Okamura

Kazuaki Shimoyama

Yoshihito Tsuji

Tsuyoshi Kagaya

Hirohisa Ogawa

Tomoaki Arakawa

Mitsuhiro Shibata

Youichi Nakahara

A permanent magnet type rotor comprises an inner memberhaving an outer ring portion; an approximately annular outer memberhaving soft magnetism and an inner circumference contacting with an outer circumference of the outer ring portion; and plural permanent magnetsdisposed at equal intervals on the outer circumference of the outer member toward the circumferential direction. At least one of the inner memberand the outer memberis made from a sintered material, and the inner memberand the outer memberare mutually sintered and bonded. Thickness and weight of a dynamotor itself can be reduced and high output and high efficiency can be achieved.

Permanent magnet type rotor and method of manufacturing the rotor

A valve operating system for an internal combustion engine has an engine valve having a valve shaft portion and a valve body portion at an end tip of the valve shaft portion. The engine valve is supported on the body of the engine for opening and closing operations. A double cylindrical piston forms an air pressure chamber, with the air pressure biasing the valve in a valve closing direction. A driving member for driving the engine valve in a valve opening direction is operatively connected to the rear end of the valve shaft portion.

Valve operating system of internal combustion engine

A valve operating device for the intake or exhaust valves of an internal combustion engine wherein a plurality of cam followers are disposed adjacent to each other for operation by different cams in mutually different modes dependent on the speed of rotation of a camshaft. A selective coupling mechanism disposed in and between the cam followers has switching pins movable between a connecting position in which the cam followers are interconnected and a disconnecting position in which the cam followers are disconnected. An oil passage is provided in one or more of the cam followers and the switching pin therein is arranged to control the rate of flow of oil through the oil passage defined in that cam follower in response to movement of the switching pin between the connecting and disconnecting positions. The oil supplied through the oil passage is used for lubricating the cam and cam following sliding surfaces in one embodiment and for operating hydraulic valve lash adjusters in another embodiment.

Valve operating device for internal combustion engine

Growing community of inventors

Wako, Japan

Toshiyasu Komatsu