| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an intake control device for an engine enabling parallel assembling of an intake manifold and an on-off valve, having good assemblability and capable of securing a good operating condition of the on-off-valve all the time with the on-off valve mounted to the intake manifold. <P>SOLUTION: This intake control device for the internal combustion engine is provided with the intake manifold M made of synthetic resin and the butterfly-type on-off valve V arranged inside the intake manifold M and capable of switching a low-speed intake mode adjusted to low-speed operation and a high-speed intake mode adjusted to high-speed operation. The on-off valve V comprises a valve case 15 having a plurality of valve holes 16, 16, ... and joined to an inner wall of the intake manifold M at two portions in both end parts, a valve shaft 17 rotatably supported by the valve case 15 and the plurality of valve plates 19, mounted to the valve shaft 17 and opening/closing the valve holes 16. Rigidity of the valve case 15 between the two joining portions is set larger than that of the intake manifold M between the two joining portions. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
