Patent ID: 7128050

Claim:
An air intake apparatus for an internal combustion engine in which an intake port is connected to a cylinder of the internal combustion engine and an intake valve opens and closes a downstream end of said intake port, comprising: a partition wall provided along a longitudinal direction of said intake port so as to cross-sectionally partition said intake port into two sections; and an intake control valve provided in a pipe forming said intake port and having an opening/closing mechanism opening and closing a first flow path implemented by partition by said partition wall and a valve element pivoted by said opening/closing mechanism and having a blocking plate for closing said first flow path and narrowing a second flow path different from said first flow path; wherein if a sliding direction of a piston within said cylinder is assumed as an up-down direction, said two sections are implemented as upper and lower sections, wherein said intake control valve attains a first state in which the first flow path is opened by said opening/closing mechanism, without said second flow path being narrowed by said blocking plate, a second state in which the first flow path is closed by said opening/closing mechanism, without said second flow path being narrowed by said blocking plate, and a third state in which the first flow path is closed by said opening/closing mechanism and said second flow path is narrowed by said blocking plate.