INTAKE CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE

摘要

PROBLEM TO BE SOLVED: To provide an intake control device for an internal combustion engine capable of eliminating the influence of an attached substance even when the substance is attached on a downstream side of a throttle valve so as to achieve smooth movement of the throttle valve, and capable of controlling an intake amount in a low opening range at high accuracy. SOLUTION: The throttle valve 5 is rotatably mounted on a body 1 equipped with an intake passage. The throttle valve 5 is provided with a first outer peripheral edge 5a on the side rotating on the upstream side of the throttle body 1 and a second outer peripheral edge 5b on the side rotating on the downstream side of the throttle body 1. The body 1 is provided with a spherical intake passage wall confronting the first outer peripheral edge 5a of the throttle valve 5, and a cylindrical intake passage wall confronting the second outer peripheral edge 5b of the throttle valve 5. COPYRIGHT: (C)2006,JPO&NCIPI