Patent ID: 7011074

Claim:
A throttle control device comprising: a throttle body defining an intake air channel; a throttle valve disposed within the intake air channel; a motor having a rotary shaft rotatable about a rotational axis; a speed reduction mechanism coupled between the motor and the throttle valve, so that the throttle valve is rotated by the motor via the speed reduction mechanism, a sensor arranged and constructed to detect a rotational position of the motor, the sensor comprising: a movable section attached to the rotary shaft of the motor, so that the movable section rotates as the rotary shaft rotates, and a fixed sensing section interacting with the movable section and mounted to the throttle body; and wherein a rotational position of the throttle valve is determined using an incremental rotational angle signal, a number of detecting range cycles representing a rotation of the motor, a maximum amplitude of the incremental rotational angle signal, and a reference value, and wherein a sensor output signal is generated corresponding to the rotational position of the throttle valve.