| 摘要 |
<p>PURPOSE:To make it possible to control a small amount of adjustment of a clutch by arranging a bypass flow passage having an on-off valve in the middle of a flow passage of control oil connecting a cylinder to a pressure supply valve and a pressure discharge valve and by pulse-width controlling the on-off valve. CONSTITUTION:Pressure supply valves V1, V2 and pressure discharge valve V3 are connected to a cylinder 4, a bypass flow passage 51 having an on-off valve V6 is connected to the middle of the connection flow passage, and the on-off valve V6 is pulse-width controlled according to signals from a clutch sensor. With this constitution, when disengaging or engaging a clutch gradually, flow of control oil to or from the cylinder 4 can be mildly controlled, enabling a small amount of adjustment of the clutch.</p> |
