Toyo Kogyo Co., Ltd.

Masato Yoshimura

Haruo Okimoto

Tomoo Tadokoro

Yasuo Honda

Kazuma Shimizu

Hiroshi Nomura

Yoshimitsu Takeda

Shiso Kariyama

Rotary piston engine having a main intake port in one side housing of the casing. The side housing is further formed with a supercharging air port which is connected with a supercharging passage leading from an air pump. The supercharging air port is so formed that it is opened substantially simultaneously with and closed later than the main intake port. A timing valve is provided in the supercharging passage to open the passage cyclically so that the supercharging is performed at the end period of the intake stroke. A centrifugal device controls the valve timing so that the valve timing is advanced under an increased engine speed.

Rotary piston engine having supercharging means

Rotary piston engine has a rotor which is applied with coatings of a fluoride resin at each side surface in the vicinity of side seals so as to fill clearance between the rotor side surface and the adjacent inner surface of the side housing whereby an improved gas-tightness is obtained.

Gas seal means for rotary piston engines

Growing community of inventors

Hiroshima, Japan

Masato Yoshimura