| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic pressure learning method for accurately controlling both line pressure and belt clamping pressure in a hydraulic control device using independent hydraulic actuators for controlling the line pressure and the belt clamping pressure. SOLUTION: The hydraulic pressure learning method is applied to the hydraulic control device which has a line pressure control solenoid 62 for controlling a line pressure control valve 61 and a belt clamping pressure control solenoid 82 for controlling a belt clamping pressure control valve 81. It learns in advance a belt clamping pressure indicated value as a control indicated value for the belt clamping pressure to be output to the belt clamping pressure control solenoid 82, and a line pressure indicating value as a control indicating value for the line pressure to be output to the line pressure control solenoid 62. Thus, the hydraulic control device accurately controls both the line pressure and the belt clamping pressure. COPYRIGHT: (C)2006,JPO&NCIPI |
