Patent ID: 7188604

Claim:
An internal combustion engine air intake structure comprising: an air intake passage having an internal passage wall; an air intake control valve disposed in the air intake passage to selectively move between a retracted position and an intake air deflecting position about a rotational axis that is positioned on one side of the air intake passage in a position closely adjacent to the internal passage wall of the air intake passage, the air intake control valve including a valve element with an inner end located at the rotational axis and an outer end having a swirl-producing notch with a bottom edge and a side edge, the rotational axis dividing the valve element into a first portion with the swirl-producing notch located on a first side of the rotational axis and a second portion located on a second side of the rotational axis with the first portion having a larger surface area than the second portion; a first partitioning member longitudinally arranged within the air intake passage to generally extend parallel to an intake air flow direction of the intake air from a position corresponding to the bottom edge formed by the swirl-producing notch of the valve element when the air intake control valve is in the intake air deflecting position; and a second partitioning member arranged to form an angle with respect to the first partitioning member and to extend along the intake air flow direction from the side edge formed by the swirl-producing notch of the valve element, when the air intake control valve is in the intake air deflecting position.