Patent ID: 9103435
Filing Date: 2015-08-11
Classification: F16H,Y10T

Abstract:
1. A mechanism ( 4 ) for actuating a transmission device ( 1 ) during a normal operation and during an emergency operation after failure of an electric transmission control system, the mechanism comprising: a plurality of electro-hydraulically actuated shifting elements (A to F) which, to obtain a gear (“ at least one of the plurality of elecrotro-hydraulically actuated shifting elements (A to F) being an interlocking shifting element, and at least a second one of the plurality of electro-hydraulically actuated shifting elements ( A to F) being a frictional shifting element; each of the plurality of actuating pressures (p_B, p_D, p_E, p_F) being produced by at least one of a plurality of valve devices ( at least one of the plurality of valve devices ( the plurality of pilot pressures (p_VS during a non-energized operating condition of the actors ( one of the plurality of valve devices ( the self-holding valve device ( such that onward passage of a further pressure signal (p_red) in a direction toward a switching valve device ( a first shift position of the switching valve device ( a second shift position of the switching valve device (