Cooler and lubrication hydraulic feed circuits of automatic transmission

摘要

PURPOSE: A cooler of an automatic transmission and a lubrication hydraulic feeding circuit are provided to improve launching feeling failure by controlling fluid pressure discharge provided to a torque converter in the engine off. CONSTITUTION: A fluid pressure is branched to a lubricating fluid pressure flow path(110) and is supplied to a lubricating unit. The fluid pressure is provided to a cooler through a damper clutch control valve(104). The fluid pressure is discharged from a torque converter and is provided to the cooler. A damper clutch fluid pressure flow path interlinks a torque converter control valve(100) and a damper clutch control valve. A cooler fluid pressure flow path is formed between the damper clutch fluid pressure flow path and the cooler.