| 摘要 |
PROBLEM TO BE SOLVED: To provide an automatic transmission hydraulic pressure supply device capable of suppressing the generation of a drag torque of a clutch by reducing a quantity of lubricant supplied to a lubrication system at a time of starting a vehicle and thereby effectively balancing the vehicle starting performance and the supply of the lubricant to the lubrication system.SOLUTION: In an automatic transmission hydraulic pressure supply device including a lubrication valve 70w disposed in a lubricant passage 70v through which lubricant can be supplied to a lubrication system 70u, and including a spool displacing in response to a signal pressure to act and capable of regulating a quantity of the lubricant, a signal pressure output when first solenoid valves (70ma, 70na) of switching valves (70m, 70n) are excited and a signal pressure output when one second solenoid valve (70pa) of a selection valve (70p) capable of supplying a hydraulic pressure to a gear fastening mechanism that can establish a gear position having a highest transmission gear ratio out of transmission gear ratios are caused to act on one end of the spool of the lubrication valve, and a regulated pressure obtained by regulating a line pressure is caused to act on the other end of the spool.SELECTED DRAWING: Figure 2 |
