Patent ID: 7216625

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 angle of the motor, the sensor comprising: a movable section including one or more magnets and interacting with the rotary shaft of the motor so that the movable section rotates as the rotary shaft rotates; a fixed sensing section interacting with the movable section and stationary with respect to the motor for determining the rotational angle of the motor; wherein a rotational position of the throttle valve is computed by the fixed sensing section using the rotational angle of the motor and a speed reduction ratio of the speed reduction mechanism; wherein a sensor output signal is generated corresponding to the rotational position of the throttle valve; wherein the one or more magnets are disposed on one axial side of the rotary shaft of the motor; wherein the fixed sensing is positioned to oppose to the one or more magnets; and wherein a motor receiving space for receiving the motor is defined within the throttle body, and the sensor is disposed within the motor receiving space.