| 摘要 |
<p>PURPOSE:To perform operation with less delay of response regardless of a stepping-in condition of a clutch pedal, in the operational mechanism of a solenoid valve control type oil pressure operational multiple plate frictional type clutch. CONSTITUTION:A clutch operational mechanism is provided with a multiple plate friction type clutch 1 switched to a clutch OFF condition by return energizing force by a spring when pressure oil supply is released, a pedal sensor 9 for detecting a stepping-in quantity of a clutch pedal 6, a control unit 8 for controlling an electric current value for a proportional flow rate control valve 7 so that a pressure oil quantity for the oil pressure piston, may become a value smaller as the pedal stepping-in quantity becomes larger, and a speed change position detection sensor S for detecting speed change position of transmissions H1, H2. The control unit 8 makes its control to maintain the clutch 1 at a current value at which necessary minimum oil pressure is produced for power transmission till it reaches the set position, under the stepping-in operation of the clutch pedal 6, and it is controlled to vary the current value based on the detected result of the speed change position when it reaches the set position.</p> |
