LIQUID PRESSURE CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a liquid pressure control device capable of effectively and favorably increasing temperature of hydraulic fluid to be supplied to a prescribed supply object. SOLUTION: A liquid pressure control device 1 is equipped with a high-pressure regulator valve 3 for setting the pressure PLof hydraulic oil supplied to a continuously variable transmission 10 from an oil pump 2, a low-pressure regulator valve 4 for setting the pressure PSof hydraulic oil supplied to a torque converter 20 from the oil pump 2 through the medium of the high-pressure regulator valve 3, a temperature sensor 6 for acquiring temperature TFof hydraulic oil, and a controller 7 for controlling the low-pressure regulator valve 4 to reduce the pressure Psof hydraulic oil supplied to the torque converter 20 while controlling the high-pressure regulator valve 3 to increase the pressure PLof hydraulic oil supplied to the continuously variable transmission 10 when the temperature TFobtained by the temperature sensor 6 is lower than the prescribed value TR. COPYRIGHT: (C)2006,JPO&NCIPI