DEVICE AND METHOD OF CONTROL OVER BELT-TYPE STEPLESS TRANSMISSION Russian patent published in 2013 - IPC F16H61/662 F16H59/14 

FIELD: transport.

SUBSTANCE: proposed device comprises primary and secondary pulleys, belt, slippage control means and means to define the permission of control with belt slippage. In compliance with first and second versions, hydraulic pressure is controlled on the basis of oscillation component included in acting hydraulic pressure and oscillation component of gear ratio. Control with belt slippage is used when torque variation rate is lower than preset value. In compliance with first version, hydraulic pressure adjustment is made proceeding from the product of both oscillation components. In compliance with first version, hydraulic pressure adjustment is made proceeding from phase difference between said components.

EFFECT: higher efficiency of transmission.

8 cl, 16 dwg