Patent ID: 7809485

Claim:
A shift control apparatus of a continuously variable transmission (CVT) which is installed in a vehicle equipped with a brake system except for an antilock brake system, the shift control apparatus comprising: a controller arranged (a) to obtain a driving-wheel acceleration, (b) to estimate a condition of a transmission ratio of the CVT, (c) when the driving-wheel acceleration is greater than or equal to a predetermined acceleration that is a spin determination acceleration value for determining wheel spin, to prohibit an upshift operation of varying the transmission ratio to a high speed side transmission ratio relative to a first predetermined transmission ratio, and (d) when the transmission ratio is in a high speed side relative to a second predetermined transmission ratio that is a high-speed-side transmission ratio as compared with the first predetermined transmission ratio, under the condition that the driving-wheel acceleration is greater than or equal to the predetermined acceleration, to cancel the prohibition of the upshift operation.