Honda Giken Kogyo Kabushiki Kaisha

Yukio Tada

Takanori Suzuki

Shizuo Yagi

Yoshimi Watanabe

Hitoshi Suzuki

Yasuhiro Sugimoto

Toshio Shioya

Hiroshi Umeno

Hideo Oka

An outboard engine has a power unit, an extension case extending vertically and having its upper end coupled to the power unit, and a propeller mounted on the lower end of the extension case and driven by the power unit. The power unit comprises an internal combustion engine having a vertically extending crank shaft and a cylinder having its axis extending horizontally, and a cover assembly covering the internal combustion engine. The axis of the cylinder is inclined to one side with respect to the axis of the propeller when viewed in plan. The outboard engine can be handled with utmost ease since it can be laid down during storage or shipment without being drained of engine oil.

Outboard motor

An internal combustion engine includes a crank shaft having a crank web, a crank pin on one end of the crank web, and a weight on an opposite end of the crank web, a crank case supporting the crank shaft therein, a cylinder, a piston reciprocally fitted in the cylinder, a rod coupled to the piston by a piston pin and connecting the piston to the crank pin for reciprocally moving the piston in the cylinder, the crank case having an opening and extending obliquely to axes of the crank shaft and the cylinder. The cylinder has an end corresponding to a bottom dead center of the piston and having a first recess opening toward the opening, the first recess being of a size allowing the piston pin to pass therethrough when the piston is in the bottom dead center. The weight on the crank web has on one side a second recess of a shape defining with the end of the cylinder a space allowing the piston as disconnected from the rod to pass therethrough.

Internal combustion engine

An internal combustion piston engine employs a stratified charge. Separate carburetor throats are provided for directing rich air-fuel mixture to a prechamber and lean air-fuel mixture to a main combustion chamber. The rich mixture is heated by the engine exhaust gases and then delivered to the prechamber. A spark plug ignites the rich mixture and causes a torch flame to project laterally through a torch slot in the prechamber wall into the main combustion chamber to ignite the lean mixture contained therein. In this way, the amount of unwanted emissions such as carbon monoxide may be reduced in the exhaust gases discharged into the atmosphere.

Side valve internal combustion engine

Growing community of inventors

Saitama, Japan

Yukio Tada