| 摘要 |
PURPOSE:To make it possible to select the friction capacity of a brake and the like at a valve responding to a car speed, and improve durability of a friction member, by converting the servo oil pressure to operate a brake and a clutch incorporated in a planetary gear according to the car speed. CONSTITUTION:A line oil pressure from a regulator valve 1 is lead to a valve room 12 of a low-cost valve 5 through oil lines 2 and 10, a governor valve 9, and an oil line 11. And the oil pressure to an oil line 7 is adjusted by the governor valve 9 making it higher as the car speed increases. Therefore, the oil pressure to a brake 3 can be converted depending on the car speed. As a result, the friction capacity of the brake and the like can be selected according to the car speed, reducing a gear change shock in a shift down, and improving the durability of the brake and the like. Moreover, the above composition can be applied economically by only a simple reformation of the existing circuit. |
