Patent ID: 7258636
Filing Date: 2007-08-21
Classification: B60K,B60Q,B60T,B60W,F02D,F16H,G05B,Y10T

Abstract:
1. A method for performing a slippage regulation in a continuously variable transmission having a driving disk set and a driven disk set that are coupled to one another by a belt means for transmitting torque, said method comprising the steps of: detecting an input power level applied to the driving disk set and an output power level delivered by the driven disk set operatively coupled to the driving disk set; and determining a power ratio (zeta) between the driving disk set power level and the driven disk set power level of a variable speed drive as a function of a safety margin value, wherein at an actual operating point the ratio of the actual contact force and the contact force at which a slippage of the belt means relative to the disk set occurs is utilized as the safety margin value, and wherein the power ratio determination is carried out during quasi-static operating conditions of the transmission.