Hydraulic control unit for a dual clutch transmission and method of hydraulic control of such a transmission

摘要

The hydraulic control device has a main pressure regulating valve (23) for adjusting the hydraulic fluid main pressure in a main pressure line (11,16). A control signal (pSt) which provides the level of the hydraulic fluid main pressure to be set and is dependent on at least one of the supply pressures (pv1, pv2) in the supply pipes (85,86) can be supplied to a control input of the main pressure regulating valve. Independent claim describes method for hydraulically controlling a double clutch gearing where the clutch coolant supply (48) is fed with coolant fluid from the gear fluid cooler (26).