| 摘要 |
PURPOSE:To perform complete closing during closing of the titled intake, by a method wherein a door body for opening and closing the intake forms a rotating door pivoting around the one end thereof serving as a fulcrum, and an opening amount of the door body is regulated by a regulating mechanism. CONSTITUTION:When an opening amount of an intake 11 is brought to maximum, a stationary stopper 21 of a lever 18 is operated so that it is placed on the upper edge of a retainer plate 28. When an opening amount of the intake 11 is brought to an arbitrary value, a moving stopper 24 of the lever 18 is actuated so that it is retained by a retainer part 27. When an opening amount of the intake 11 is brought to a zero state, the upper surface of the moving stopper 24 is brought into press frictional engagement with the lower edge of the retainer plate 28 to bring the door body 13 into press contact with the intake port 11 through a packing 16. |
