SCHALTSTEUERUNG FÜR EINE HYDRAULISCHE STEUERUNG EINES AUTOMATIKGETRIEBES

摘要

PCT No. PCT/KR93/00121 Sec. 371 Date Aug. 22, 1994 Sec. 102(e) Date Aug. 22, 1994 PCT Filed Dec. 29, 1993 PCT Pub. No. WO94/15809 PCT Pub. Date Jul. 21, 1994A hydraulic pressure control system for an automatic transmission that includes a torque control regulating valve for converting a portion of the hydraulic pressure from an oil pump to a control pressure in accordance with a variation in the torque, and a control switch valve for supplying a torque pressure to a friction member prior to a shift valve being supplied with supply and release pressures for a friction member.