Air intake device for internal combustion engine

摘要

An air intake device for an internal combustion engine (1) having plural cylinders (12a, 12b, 12c and 12d) comprises an air intake passage (4) including a first air intake manifold (2) and a second air intake manifold (3), characterized in that the air intake device further comprises a partition (7) provided to divide the air intake passage into the first air intake manifold and the second air intake manifold; and a flow control mechanism (8) having a valve body (9) positioned to be one of: in a first position (P 1) at which the valve body closes air flow communication between the air intake passage and the cylinders; in a second position (P2) at which air flows into only the first air intake manifold; and in a third position (P3) at which air flows into both the first air intake manifold and the second air intake manifold.