Patent ID: 8371985

Claim:
A shift control device for a continuously variable transmission that is connected to an internal combustion engine installed in a vehicle, the continuously variable transmission comprising a continuously variable transmission mechanism that modifies a speed ratio continuously and a subtransmission mechanism that is connected in series to the continuously variable transmission mechanism and applies a first speed and a second speed that is higher than the first speed selectively, the shift control device comprising: a sensor that detects an operating condition of the vehicle; and a programmable controller programmed to: determine, on the basis of the operating condition of the vehicle, whether the vehicle is running under a normal upshift condition or under a low load/high speed upshift condition having a lower load or a higher speed than the normal upshift condition; and when the vehicle is running under the low load/high speed upshift condition, control the subtransmission mechanism such that the sub transmission mechanism is upshifted from the first speed to the second speed at a lower vehicle speed than when the vehicle is running under the normal upshift condition.