| 摘要 |
PURPOSE:To properly adjust timing at the time of shift with use of a flow control valve to control drained oil in a pressure hold valve and in a pressured oil storage chamber of the pressure hold valve. CONSTITUTION:A pressure hold valve 360 has a spool installed a spring at its back on one side, a pressured oil storage chamber 363 which has a one-to-two shift valve 220 and a brake 26 connected to an oil passage 116, and an oil chamber 364 connected to an oil passage 104 are provided. A flow control valve 340 provides a check-valved orifice 341 and a small orifice 342, oil drain in the pressured oil storage chamber for the pressure hold valve is controlled, interlocking condition of the brake 26 is held until the commencement of interlocking a clutch to have oil pressure supplied by the shift. Area in the small orifice 342 for the flow control valve 340, and elastic modulus of a volumetric spring 361 in the pressured oil storage chamber 363 are set up to be compatible to ease up impulse at the time of shift. |
