Patent ID: 6073507
Filing Date: 2000-06-13
Classification: F16H,Y10S,Y10T

Abstract:
A shift control unit for an electric-power-assist transmission, the electric-power-assist transmission including a shift spindle rotated by a driving motor, an angle sensor for detecting a rotational position of said shift spindle, a transmission mechanism for putting a main clutch in an engaged or disengaged state in a manner which is mechanically coupled with rotation of said shift spindle; and a gear shifting mechanism for switching a gear in a manner which is mechanically coupled with said rotation of said shift spindle, said shift control unit comprising:an engine-rotational-speed sensor for sensing a rotational speed of an engine;a position sensor for sensing a position of said shift spindle; and shift disabling means which is used for disabling a shift change without regard to a shift instruction if the speed of a vehicle is equal to or greater than a predetermined value or the rotational speed of said engine is equal to or greater than another predetermined value and, at the same time, while said position sensor is indicating a neutral position.