INTAKE CONTROL DEVICE OF ENGINE

PURPOSE:To provide an intake control device of an engine which is easily assembled in an intake passage and includes plural intake passages biased from each other, by which the area of each intake passage can be controlled and varied in a simple structure even in the case where restrictions are put on the arrangement space. CONSTITUTION:In an intake control device including side intake passages 7d, 7f, a center intake passage 7e, a part of which is biased from the side intake passage, and an intake control valve 18 for controlling and varying the areas of the side and center intake passages, the side and center intake passages are formed in such a manner as to cross in the cam shaft direction, and a valve hole 7g is formed in such a manner as to obtain a recessed part 7g according to the bias amount on the bottom wall of the side intake passage. The intake control valve comprises a rotary shaft part 18a having a circular cross section supported by the valve hole, a semicircular side valve part 18c turned between the erecting totally close position of the side intake passage and fully open position to be sunk in the recessed part and a planar center valve part 18b turned between the totally close position and the fully opening position, both valve parts being formed in such a manner as to be stored in the axial projection plane of the rotary shaft part, wherein all of the parts are integrally formed.