Two suction valve type internal-combustion engine

Abstract

Abstract PURPOSE:To enable to form a vertical biaxial swirl within a cylinder, by enabling to scavenge an ignition plug located in the center of the cylinder at the time of a low load or a low revolution. CONSTITUTION:A control valve 6 is turned in a closing direction at the time of idling or a low load or low revolution, fresh air passed through from a surge tank 9 to a No.1 branch 8 is drifted on to the upper wall of a suction port 4 after having been passed through a notch on the upper part of the control valve 6, and flows into a combustion chamber by an exhaust valve 2 side of a suction valve 3 for formation of a vertical biaxial swirl which is in parallel with an axis of a cylinder. The exhaust valve 2 is cooled sufficiently by the fresh air. On the one hand, the control valve 6 becomes fully open at the time of a high load or a high revolution, and the fresh air flows into the suction port 4 from a No.2 branch 10 also in large quantity compared with the No.1 branch 8.

Inventors

• 👤 Toshio Tanahashi
• 👤 敏雄 棚橋
• 👤 Kenichi Nomura
• 👤 野村　憲一
• 👤 Tetsuo Nagano
• 👤 永野　徹郎

Bibliographic Details