OIL-PRESSURE CONTROL DEVICE FOR AUTOMATIC TRANSMISSION

摘要

A hydraulic control device includes a solenoid valve (SL6) capable of supplying a first engagement pressure (PSL6) to a first engagement element (B2), and a first cut valve (20) that is interposed in an oil passage from the solenoid valve (SL6) to the first engagement element (B2) and is capable of cutting off the supply of the hydraulic pressure to the first engagement element (B2). The first cut valve is switched so as to cut off the supply of the hydraulic pressure to the first engagement element (B2) when the first engagement pressure (PSL6) and a second engagement pressure (PSL3) are simultaneously supplied to the first engagement element (B2) and a second engagement element (C3), respectively.