| 摘要 |
PROBLEM TO BE SOLVED: To achieve both reduction in D-N shift shock and elimination of degradation of N-D shift response and shift feel. SOLUTION: This oil hydraulic control device for automatic transmission includes an accumulator 5 in feed oil passages La-Lc of a oil hydraulic servo 2 for operating a clutch C-1. A control valve 6 for controlling oil feed to the hydraulic servo, is inserted on the lower side than a portion connected to the accumulator. This makes the control valve and the accumulator lie in parallel with the feed oil passage, and the accumulator lie on the upper stream side of the feed passage to the control valve (lower stream side in the case of discharge), thereby achieving both quick feed to the hydraulic servo without being affected by the accumulated pressure in the accumulator and show relieving of servo hydraulic pressure using the discharge pressure from the accumulator. |
