| 摘要 |
PURPOSE:To construct a control device simple and in small size by opening a control valve to establish the transmission system of 2nd position low speed from the max. speed position the car speed signal pressure input to a shift valve in the No.2 position of a manual valve, and thereby hindering establishment of the max. speed position transmission system. CONSTITUTION:A pilot oil path is released to the atmosphere in No.1 position of a manual valve 9, and No.2 shift control valve 182 is opened/closed under control by the oil pressure of a hydraulic detaining element to establish the 2nd low speed transmission system from the max. speed position, and upward shift into the max. speed position transmission system is made smooth from the two position lower transmission system via the one position lower transmission system. In No.2 position of the manual valve 9, the pilot oil path is connected to an oil pressure source 8 to leave the control valve 182 closed it is, which hinders input of the car speed signal pressure to a shift valve 103 to provide holding in the downshift position, and the max. speed position transmission system is hindered from being established. Thus a manual valve can be constructed simply and small in size. |
