| 摘要 |
<p>PURPOSE: A hydraulic control circuit of a torque converter is provided to increase cooling efficiency by circulating fluid even when a lock-up clutch embedded in the torque converter is in operation. CONSTITUTION: A first port(501) is supplied with control pressure from an on/off solenoid valve. A second port(502) is supplied with drive pressure from a regulator valve. A third port(503) supplies hydraulic pressure from the second port to a cooler. A fourth port(504) is connected to a third fluid path(36). A fifth port(505) is selectively connected to the fourth port. A seventh port(507) is connected to a second fluid path(34). A ninth port(509) is connected to a first fluid path(30).</p> |
