To suppress the generation of chain noise at coast deceleration by a brake pedal-in operation.SOLUTION: A control device comprises a belt-type continuously variable transmission CVT, and a CVT control unit for controlling secondary pressure guided to a secondary pulley of the belt-type continuously variable transmission CVT on the basis of transmission input torque. The belt-type continuously variable transmission CVT is arranged between an engine and drive wheels, and has a primary pulley, the secondary pulley and a chain belt which is stretched over a sheave face of the primary pulley and a sheave face of the secondary pulley. In a control device of the belt-type continuously variable transmission CVT, the CVT control unit has a secondary pressure limit control part which calculates upper limit hydraulic pressure at which sound vibration performance reaches an allowable level on the basis of vehicle deceleration at coast deceleration by a brake pedal-in operation, and limits the secondary pressure so as to reach the upper-limit hydraulic pressure or lower.SELECTED DRAWING: Figure 4
ベルト式無段変速機の制御装置
2022-04-25
Patent
Elektronische Ressource
Japanisch