Patent ID: 7351173

Claim:
A transmission controller for a continuously variable transmission system of a vehicle having an engine that includes a crankshaft and having a driving wheel, the transmission system including a motor, a driving pulley disposed on a side of the motor, a driven pulley for transmitting power to the driving wheel via a free wheeling clutch, a belt wound between said driving pulley and said driven pulley, a start-up clutch connected between said crankshaft of said engine and said driving pulley to transmit power from said crankshaft to said driving pulley when said crankshaft equals or exceeds a specified number of rotations, and gear ratio control means for changing a gear ratio by varying a groove width of said driving pulley, said transmission controller comprising: gear ratio detecting means for detecting a gear ratio of said continuously variable transmission system; and pulley number-of-revolution detecting means for detecting the number of revolutions of said driving pulley, wherein said gear ratio control means varies a gear-ratio control start time based on at least one of said gear ratio and a rotating state of said driving pulley.