To provide a compact engine feeding system with a tumble control valve facilitating the fitting works by solving problems in fitting a conventional type tumble control valve, which is a butterfly valve fitted with a thin plate to a shaft of the tumble control valve by a screw, such as inferior workability and falling-off of the screw.
This tumble control valve for a multicylinder internal combustion engine, which is an integral mold tumble control valve having the tumble control valve part varying the opening cross sections of respective intake passages and a seal part preventing the mixing of the air flow between the respective feeding passages mutually continued, is characterized in that its axis is set in parallel to the axis of a variable intake long valve.
NIITSUMA SHIGETO
MINEGISHI TERUHIKO
HITACHI CAR ENG CO LTD