| 摘要 |
PROBLEM TO BE SOLVED: To select a selector valve changing over between a control pressure and an operating pressure (range pressure) in starting without using a dedicated solenoid valve. SOLUTION: A ratio control valve 80 is changed over in respective positions of feed, discharge, and cutoff by a downshift solenoid valve S3 and an upshift solenoid valve S4 so as to control the shifting. Where the two solenoid valves S3 and S4 become three types of combinations controlling the shifting, the selector valve 79 is in a direct position to feed operating pressure PB1 and PC1. When the two solenoid valves S3 and S4 are combination except for the three types of combinations, the selector valve 79 is in a control position to feed a control pressure PCC. |
