Yamaha Hatsudoki Kabushiki Kaisha

Yamaha Hatsudoki Kabushiki

Tsuyoshi Ohkawa

Kiyohiko Oguri

Reiichi Kaji

An internal combustion engine having a V-type configuration with a camshaft disposed in the valley of the V and driven by an intermediate shaft that is offset to one side of the engine in the area of stagger between the cylinder banks. A gear train drives the intermediate shaft from the crankshaft and the camshaft from the intermediate shaft and provides a total gear reduction of one-half to one so that the camshaft rotates at one-half crankshaft speed. The engine is employed to operate a garden tractor having a lawn mower attachment.

V-type multi-cylinder engine

An improved governor mechanism for an engine having angularly related staggered cylinder banks. The governor mechanism includes a link or motion transmitting member that is disposed within the stagger between the cylinder banks so as to provide a compact assembly.

Growing community of inventors

Iwata, Japan

Tsuyoshi Ohkawa