APPAREIL DE COMMANDE HYDRAULIQUE POUR FAIRE FONCTIONNER DES ÉLÉMENTS D'ACTIONNEMENT DANS UNE TRANSMISSION DE VÉHICULE À MOTEUR

摘要

A hydraulic operating apparatus (10) for the operation of actuating elements in a motor vehicle transmission has a multiplicity of piston-cylinder arrangements (14.5) which have in each case one actuating piston (16.5) which is operatively connectable to an actuating element and which can be hydraulically acted on on a first side and on a second side by means of in each case one associated pressure space (18.5, 18.5'). Each piston-cylinder arrangement is assigned a control device (20.5) which permits or prevents an actuating movement of the respective actuating piston in a first direction or in an opposite, second direction. Furthermore, the pressure spaces on the first side of the actuating pistons are hydraulically connected to one another via a common first pressure line (22), whereas the pressure spaces on the second side of the actuating pistons are hydraulically connected to one another via a common second pressure line (24). For straightforward ventilation of the system, each pressure line is assigned at least one ventilation valve (26, 28) with an exit (30, 32) for air, wherein the exits of the ventilation valves are connected to a common ventilation line (34).