Yamaha Hatsudoki Kabushiki Kaisha

Yamaha Motor Corporation

Takafumi Fukuda

Takeshi Ito

Toshikazu Ozawa

Yoshihiko Moriya

Keiichi Harada

Tomoyasu Arai

Norimitsu Suzuki

Yuh Motoyama

A component supply device includes a pallet configured to allow a tray to be arranged thereon, a magazine operable to hold a plurality of pallets, and a magazine holder configured to allow the magazine to be arranged therein. The magazine holder is configured to allow the pallet to be conveyed from the magazine that has been arranged to a component supply position. The component supply device further includes a magazine supply unit configured to supply the magazine to the magazine holder, a magazine ejection unit configured to receive the magazine ejected from the magazine holder, and a magazine conveyance unit configured to convey the magazine from the magazine supply unit to the magazine holder.

Component supply device and component mounting device

An exhaust port controlling arrangement for an internal combustion engine having both main and auxiliary exhaust ports. A main control valve cooperates with the main exhaust port for varying the timing at which the exhaust port opens in response to engine speed. An on/off auxiliary control valve is positioned in a passage leading from the auxiliary exhaust port for opening and closing the flow through the auxiliary exhaust passage in response to an engine condition. Means retard the opening of the main exhaust port upon opening of the auxiliary exhaust ports to improve the power and torque curves of the engine.

Exhaust timing control device for two-cycle engine

A number of embodiments of combustion chambers for direct cylinder injected engines wherein the combustion chamber has a recess surrounded by a squish area. The fuel injector is disposed so that it will spray into the recess against the wall rather than toward the squish area. Alternate spark plug locations are disclosed.

Combustion chamber for injected engine

Several embodiments of combustion chamber and fuel injection systems for internal combustion engines wherein the combustion chamber is formed by a dome shape recess having a steeply inclined wall and a more shallowly inclined wall. The walls intersect along a line that is disposed closer to the more steeply inclined wall and fuel injector is positioned substantially at this line. In one embodiment, the fuel injector is inclined to spray toward the steeper wall. Various arrangements for forming the combustion chamber recess are disclosed.

Growing community of inventors

Iwata, Japan

Takafumi Fukuda