| 摘要 |
<p>PROBLEM TO BE SOLVED: To generate a centrifugal oil pressure in a canceller chamber when a clutch is released, so as to prevent generation of the centrifugal oil pressure in the canceller chamber when the clutch is engaged. SOLUTION: A hydraulic clutch is constituted by engaging and disengaging it by pressing force of a clutch piston 52 operated by receiving a clutch oil pressure supplied in a clutch oil chamber formed in a clutch drum 51. A canceller piston 54 is fit arranged in a canceller chamber 52a formed in an opposite side to a clutch oil chamber 51a of the clutch piston 52, this canceller piston is locked to the clutch drum 51. A discharge oil path 52c, closed when the clutch piston is returned to a clutch release position and opened when the clutch piston is moved by a prescribed amount to an engaging side by supplying a clutch oil pressure to the clutch oil chamber to allow operating oil in the canceller chamber to flow out to the outside, is provided in a sliding part of the clutch piston and the canceller piston.</p> |
