| 摘要 |
PROBLEM TO BE SOLVED: To provide an intake device for an internal combustion engine capable of preventing a collision sound between a rotary valve and a bore part, regardless of deformation of the rotary valve for switching an air supply form of the internal combustion engine. SOLUTION: The rotary valve having a plurality of valve parts for respectively separately opening and closing a supply switching port 7 of a plurality of air supply passages of an intake manifold, has a sealant installed in the respective valve parts. A ladder engaging part 64 of the sealant is fitted in a ladder fitting recessed part of the valve parts. When the rotary valve becomes a closing state, an inner surface part 77 of the ladder fitting recessed part is positioned on the opposite side of the supply switching port 7 existing side to the ladder engaging part 64. A seal interval A between the inner surface part 77 and the ladder engaging part 64 becomes smaller than a valve interval C between the valve parts 11 and the bore part 8. COPYRIGHT: (C)2008,JPO&INPIT
|
