| 摘要 |
<p>PURPOSE: To prevent retreat of a vehicle or generation of a shock due to delay of effectiveness in hill hold control. CONSTITUTION: This control device for automatic transmission is provided with a hydraulic power transmission transmitting rotation of an engine to a transmission 16, a clutch to be engaged when a forward running range is selected, a one-way clutch F2 to be locked by engagement of the clutch so as to attain forward first shift, a brake locking the one-way clutch F2 at being engaged, a first hydraulic servo 91 being supplied with hydraulic pressure so as to engage the clutch, a second hydraulic servo 92 being supplied with hydraulic pressure so as to engage the brake, and a control device 94 controlling oil pressure. When the brake is engaged, the one-way clutch F2 is locked, and reverse rotation of the output shaft 23 of the transmission 16 is obstructed.</p> |
