| 摘要 |
PURPOSE:To accelerate a pace of responsiveness as well as to lessen any shock attendant upon an intermission to the utmost by adding initial pressure, being regulated according to a variation in conditions and always kept in a proper value, to a multiple disc clutch at all times. CONSTITUTION:Hydraulic pressure is fed to hydraulic ports 115, 117 of each of cylinder parts 79, 81 from a pump 119 via a control valve gear 121 which is connected to a controller 127. This controller 127 controls initial pressure to actuators 95, 97 on the basis of each detection of a hydraulic sensor 140 and a stroke sensor 142. With this constitution, since such an initial pressure that is regulated according to a variation in conditions and always kept in a proper value is added to each of multiple disc clutches 73, 75, responsiveness is well improved, and the clutch 73 is in no case fully opened, so that any shock attendant upon the intermission is reducible to the utmost. |
