| 摘要 |
The present invention provides a toroidal continuous variable transmission, which corrects an output signal to the solenoid valve according to changes in the temperature of the working oil and thereby secures a desired transmission ratio without being affected by working oil temperature changes or by variations in performance of the constitutional components. The controller has stored in memory a relation, predetermined from experiments, between the working oil temperature and the characteristic of output pressure supplied from the solenoid valve. Once the target transmission ratio is determined by the main routine, the controller calculates the amount of correction for the output signal to the solenoid valve based on the signal from the oil temperature sensor, corrects the conventional output signal by the correction amount, and outputs the corrected output signal to the solenoid valve. Therefore, the pressure applied to the left end of the sleeve is free from influences of changes in the working oil temperature, making it possible to produce a desired transmission ratio.
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