| 摘要 |
<p>A circulating output oil channel (L7) is connected to an input port (72k) of a lock-up relay valve (70) via a branching oil channel (L11), the input port (72k) and an output port (72h) connected to a lock-up oil channel (L8) are in communication when a lock-up clutch (37) is disengaged, and communication of the input port (72k) and the output port (72h) is cut off when the lock-up clutch (37) is engaged. When the lock-up clutch (37) is disengaged, some hydraulic oil circulated in a converter oil chamber (31a) and outputted to the circulating output oil channel (L7) can thereby be supplied to a lock-up oil chamber (39a) via the branching oil channel (L11), and the interior of the lock-up oil chamber (39a) can therefore be filled with hydraulic oil. As a result, when the lock-up clutch (37) is next engaged, the hydraulic pressure in the lock-up oil chamber (39a) can be quickly raised, and engaging responsiveness can be improved.</p> |
