| 摘要 |
<p>PURPOSE:To prevent the shift shock by press-fitting a ring sleeve having a predetermined thickness along the inner circumferential surface, on the outer diameter side, of a cylinder constituting a hydraulic actuator, and bringing the piston into a sliding contact with said sleeve to reduce the centrifugal oil pressure acting upon the piston. CONSTITUTION:A ring sleeve 53 having a predetermined thickness is press-fitted on the outer-diameter-side inner circumferential surface of a cylinder constituting a hydraulic actuator 40, and a piston 51 is brought into a sliding contact with said sleeve 53. In shifting from 2nd speed to 3rd speed, the operation oil pressure is supplied to the actuator 40 to shift a clutch C2 into a connected state. On this occasion, the centrifugal oil pressure acting upon the hydraulic actuator 40 is highly reduced by the ring sleeve 53 disposed on the outer-diameter-side inner circumferential surface of the cylinder, reducing the shift shock in engagement of the clutch C2.</p> |
