| 摘要 |
<p>A control system for operating the clutch (16, 22, 24) and brake (26, 36) elements of a multiple speed ratio transmission includes a manual valve (60) that opens line pressure to a transfer valve (165), which in its first state pressurizes a feed line (216) through which any of the clutches and servos may be selectively pressurized. In its second state, the transfer valve pressurizes the clutches whose engagement procudes a predetermined speed ratio. The detector valve (164) moves the transfer valve to the second state if the combination of pressurized clutches and servos is other than the combination that produces a drive ratio in normal operation. </p> |
