Patent ID: 6076031
Filing Date: 2000-06-13
Classification: F16H,Y10T

Abstract:
A speed ratio controller for a toroidal continuously variable transmission of a vehicle, said transmission comprising a motor varying an operation position according to a command signal so as to vary a speed ratio of said transmission, said controller comprising:a sensor for detecting a running condition of the vehicle,a sensor for detecting that the vehicle is running,a sensor for detecting a real speed ratio of said transmission, anda microprocessor programmed to:perform, when the vehicle is running, an initialization of said command signal with respect to an actual operation position of said motor based on the real speed ratio of the transmission;determine a target speed ratio based on the running condition of the vehicle;determine the command signal based on the target speed ratio;limit the command signal within a first limiting range which is narrower than a second limiting range corresponding to a physical operation limit of the transmission, after said initialization is performed; andoutput the command signal after limiting, to the motor.