The hydraulic control system for an electromechanical multi-mode - drive unit of an automatic transmission

摘要

A the hydraulic control system for an electromechanical multi - mode - a drive unit of a motor vehicle contains a plurality of torque transmitting means, each comprising at least one friction clutch. As a rule, a plurality of coupling individually valves are in fluid communication with one of the torque transmitting means and are switchable, when they are triggered, a state of the torque transmitting means of a clutch in a separate state to a clutch to change in an engaged state. Solenoid valves are individually coupled with one of the clutch as a rule, the valves and are in fluid connection with this. A normally open solenoid valve with a variable force is in fluid communication with the solenoid valves. Operation of the solenoid valve with a variable force represents a hydraulic pressure between one of the solenoid valves in an open state and whose a paired clutch valve, a generally.