| 摘要 |
<p>PROBLEM TO BE SOLVED: To perform stable control of pressure rise relating to a change of temperature, in case of driving a solenoid proportional control valve by specified on-duty when a hydraulic clutch is connected. SOLUTION: When a hydraulic clutch 16 starts to be engaged, a solenoid of a proportional control solenoid valve 17 or 18 is driven by fixed on-duty for only a fixed time. A drive current value at this time is detected, and on-duty thereafter is corrected based on this detection value.</p> |
