HYDRAULIC CONTROL DEVICE OF POWER TRANSMITTING DEVICE FOR VEHICLE

摘要

PROBLEM TO BE SOLVED: To provide a hydraulic control device of a power transmitting device for a vehicle free from impairing the durability of a hydraulic frictional engagement device and generating the engagement shock of the hydraulic frictional engagement device in the power transmitting device for the vehicle executing both of clamping pressure control and engagement pressure control. SOLUTION: In controlling the clamping pressure by a clamping pressure control means 100, a driving current value ISLTas a driving signal is calculated on the basis of a target clamping pressure PBELTdetermined by a clamping pressure control means on the basis of a second relationship R2, on the other hand, in controlling the engagement pressure by an engagement pressure control means 92, the target clamping force PBELTis temporarily determined on the basis of the target engagement pressure PG determined by the engagement pressure control means 92 on the basis of the first relationship R1, and a linear solenoid valve (control hydraulic pressure generating valve) SLT is driven on the basis of the driving current value ISLTcalculated by a driving signal calculating means 94 on the basis of the target clamping pressure PBELTon the basis of the second relationship R2to generate the hydraulic pressure PSLT. COPYRIGHT: (C)2004,JPO&NCIPI