A shift control apparatus for a continuously variable transmission has a
target primary pressure setting unit provided a target primary pressure
according to a speed ratio deviation between an actual speed ratio and a
target speed ratio; a shift control valve for regulating flow rate of
hydraulic oil supplied to the primary cylinder by changing an opening area
of the shift control valve according to current supplied to an
electromagnetic coil; a primary pressure detecting unit; and a control
unit for controlling the speed ratio by correcting a basic current set to
be based upon the target primary pressure and supplied to the
electromagnetic coil by feeding back the primary pressure detected by the
primary pressure detecting unit, so as to have an excellent shift feeling,
being able to decrease a fuel consumption by reducing the load of a pump
and by quickly shifting to an optimum speed ratio.
