| 摘要 |
PROBLEM TO BE SOLVED: To provide an automatic transmission having a rotary member of which rotational speed varies due to a shift stage between a clutch device and a central axis, and capable of simplifying hydraulic control.SOLUTION: An automatic transmission includes; a first clutch C1 that has a radial oil passage a15 communicating with a working oil chamber 56, and a radial oil passage a26 communicating with a cancel oil chamber 57; and a sleeve member 70 that has a sleeve part 70a in which a radial oil passage a13 communicating between radial oil passages a12, a15, and a radial oil passage a24 communicating between a radial oil passages a22, a26 are formed on the same inner peripheral surface, and in which rotational speed difference to rotational speed of a clutch drum 52 is varied by a shift stage to be attained.SELECTED DRAWING: Figure 4 |
