Patent ID: 7431013

Claim:
An intake air control device for controlling the air intake of an engine mounted to a vehicle body frame of a saddle-type vehicle, the engine comprising a cylinder head and an air intake path forming body connected to the cylinder head, the intake air control device comprising: a valve shaft extending in the left and right direction of the vehicle body frame across an air intake path formed in the air intake path forming body, the valve shaft rotatably supported by the air intake path forming body, a butterfly-shaped throttle valve fixed to the valve shaft so as to control the opening of the air intake path, an actuator, the actuator comprising an electric motor which can demonstrate a motive power to drive the valve shaft to rotate, a throttle drum which rotates in response to a throttle operation by the vehicle operator, and a throttle operating amount sensor which detects the throttle operating amount by a vehicle operator, the throttle operating amount sensor being supported by the air intake path forming body, wherein the actuator is connected to one end of the valve shaft, and a throttle operating amount sensor is connected to an other end of the valve shaft, and wherein the throttle drum is mounted to the other end of the valve shaft so as to be capable of relative rotation, and wherein the throttle operating amount sensor, which is coaxial with the valve shaft, is supported by the air intake path forming body so as to oppose the throttle drum while being connected to the throttle drum.