DEVICE AND METHOD TO CONTROL CONTINUOUSLY VARIABLE TRANSMISSION OF BELT TYPE Russian patent published in 2013 - IPC F16H61/02 F16H61/662 F16H59/14 

FIELD: motor industry.

SUBSTANCE: device according to the first, second, third and fourth versions comprises primary and secondary pulleys, a belt, a facility of control with belt slippage, a facility to control return of normal control for limitation of a speed of input torque variation. The method according to the first and second versions consists in the fact that hydraulic pressure is controlled by means of control with belt slippage, the speed of input torque variation is limited. The input torque is varied in direction of rising until hydraulic pressure increases to hydraulic pressure, at which the input torque is not excessive relative to the force of belt pressing. Limitation is carried out from the moment of initiation of return to normal control.

EFFECT: prevention of excessive belt slippage in continuously variable transmission.

11 cl, 21 dwg