An electronic hydraulic system (10) for operating a gear selector (s) and clutch (s) of transmission gear boxes having a piston cylinder unit with a dual acting reciprocating piston

摘要

The present invention relates to a transmission gear box, which comprises a control unit, and a piston (19d), connected to a plurality of transmission gear box units (25, 28, 30, 33, 35, 38) Wherein at least one electric motor-driven piston cylinder unit (19) is provided for shifting them, the transmission gear box units including at least two clutch units (25 / C1, 28 / C2) and the piston cylinder unit The reciprocating piston 19d is in the form of a double acting reciprocating piston and the dual acting reciprocating piston 19d seals the two working chambers 19a and 19b from each other in sealing manner and the respective working chambers 19a and 19b Is connected to one clutch C1 and C2 via the main hydraulic lines HL1 and HL2 respectively and at least one working chamber 19a and 19b of the dual acting reciprocating piston are connected via switch valves 20 and 22 And may be hydraulically connected to the reservoir 6.