SHIFT CONTROL DEVICE FOR GEAR RATIO INFINITE TRANSMISSION

摘要

PROBLEM TO BE SOLVED: To prevent the occurrence of a shock even if the passing torque direction of a continuously variable transmission is reversed when switching a motive power circulating mode and a directly coupling mode. SOLUTION: A torque distribution deciding means 81 changes the torque distribution kSLC of a releasing side clutch and the torque distribution kSHC of a fastening side clutch according to the target CVT transmission ratio iCVTC and engine torque Te. A torque shift anticipating means 82 anticipates a torque shift quantity from target CVT passing torque and the iCVTC. A torque shift compensated target CVT transmission ratio calculating means 83 determines the torque shift compensated target CVT transmission ratio iCVTS by subtrating a torque shift anticipating quantity from the iCVTC, and an actuator driving speed calculating means 84 determines the target step number of a shift actuator from the iCVTS, and determines a step speed Vstep0. A switching time setting means 85 decides torque transmission passage switching time Tc so that a difference value by subtracting an average of the Vstep0 from an actuator limit driving speed becomes smaller than a prescribed value.