| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic control device of a transmission for a vehicle capable of effectively suppressing temperature rise of a transmission element caused by repeated transmission operations, with a simple configuration in which the number of components is suppressed to be small.SOLUTION: A hydraulic control device of a transmission for a vehicle includes: a communication oil passage (20) for communicating an outlet oil passage (19) from an oil cooler (18) and a lubricant passage (15) connecting from a regulator valve (13) to a lubrication system (12); and a switching valve (21) for switching opening/closing of the communication oil passage (20). When oil temperature (TB) of an outlet of the oil cooler (18) is lower than oil temperature (TA) of an inlet of an oil pump (OP), low-temperature and a large flowing amount of lubricant can be supplied to a transmission element (16) by supplying a part of hydraulic oil flowing out of the oil cooler (18) to the lubrication system (12) together with surplus oil of the regulator valve (13) by operating the switching valve (21) and opening the communication oil passage (20). |
