Electro-hydraulic system for the actuation of multiple clutches and gear selectors with high-precision control of several shift gearbox units simultaneously

A shift gearbox, comprising:

• a control unit;
• at least one electric motor drive;
• multiple shift gearbox units, including at least two clutch units;
• and
• at least one piston-cylinder unit, driven by a respective one of the electric motor drives, and which has a piston and is connected via hydraulic lines to the multiple shift gearbox units, and which is configured to shift the multiple shift gearbox units, wherein the piston of the piston-cylinder unit is in the form of a dual-action reciprocating piston, wherein the dual-action reciprocating piston sealingly separates two working chambers of the dual-action reciprocating piston from each other, wherein each working chamber is connected via a respective main hydraulic line to one respective clutch, and at least one of the two working chambers of the dual-action reciprocating piston or at least one main hydraulic line is enabled to be connected to a reservoir hydraulically via a switch valve.