Patent ID: 7029410
Filing Date: 2006-04-18
Classification: B60W,F16H,Y10T

Abstract:
1. A system for preventing a belt slip of a continuously variable transmission where a belt entrains around a primary pulley connected to an engine and a secondary pulley connected to an output shaft, and a primary pressure and a secondary pressure respectively using a line pressure as an original pressure act on the primary pulley and the secondary pulley, comprising: a primary pressure sensor for detecting the primary pressure; primary pulley torque capacity calculating means for calculating a torque capacity of the primary pulley from the primary pressure; pulley reverse rotation detecting means for detecting a reverse rotation of the pulleys, where the pulleys rotate in the direction opposite to the intended rotating direction currently set for; and line pressure correcting means for comparing an input torque and the torque capacity of the primary pulley at the time of the reverse rotation of the pulleys and setting the line pressure on the basis of a control input torque obtained by increasing and correcting the input torque according to a shortage of the torque capacity of the primary pulley when the input torque is larger than the torque capacity of the primary pulley.