Patent ID: 7152581
Filing Date: 2006-12-26
Classification: F02D,F16K,G01D

Abstract:
1. A motor-driven air amount control apparatus of an internal combustion engine comprising: a throttle valve adjusting an intake air amount; a throttle shaft rotatably bearing said throttle valve to a throttle body; a motor held to said throttle body and having a rotary shaft parallel to said throttle shaft; a speed reduction gear mechanism arranged for transmitting a rotational force of said motor to said throttle shaft, said speed reduction gear mechanism comprising: an output stage gear fixed to the rotary shaft of said motor; a final stage gear fixed to said throttle shaft; and an intermediate stage gear positioned between said output stage gear and the final stage gear and reducing the rotation of said output stage gear so as to transmit to said final stage gear, a resin cover attached to said throttle body and covering said throttle shaft and said speed reduction gear mechanism; a motor terminal connecting connector portion integrally resin-moldingly formed in said resin cover; a motor terminal extending toward said motor terminal connecting connector portion from said motor and insertably connected to said motor terminal connecting connector portion; a throttle position sensor attached in a position facing said throttle shaft in said resin cover for electromagnetically detecting a rotational position of said throttle shaft in a non-contact state; a magnetic detecting element of said throttle position sensor is attached to a control circuit portion attached to said position in resin cover facing a rotor attached to a leading end of said throttle shaft, and the magnetic detecting element and the control circuit are electrically connected in said control circuit portion; a connector portion outputting the signal of said throttle position sensor to an external portion is provided at a position closer to said motor than said throttle position, said control circuit and said connector portion are electrically connected; and an external terminal in said connector portion supplying electric power to said motor.