Patent ID: 7704188
Filing Date: 2010-04-27
Classification: F16H,Y10T

Abstract:
1. A method of operation of a transmission device ( 3 ) having a plurality of shift elements ( 5 , 6 ) which are hydraulically actuated, via a pressure source ( 4 ), for engaging and disengaging various transmission ratios of the transmission device ( 3 ), a hydraulic system of the transmission device ( 3 ) having a respective electric actor ( 7 , 8 ) for adjustment of actuating pressures of the respective shift element ( 5 , 6 ) such that when an engine start-stop function calls for a combustion engine ( 2 ), forming part of a drivetrain with the transmission device ( 3 ), to be switched off, an energizing current of the actors ( 7 , 8 ) is adjusted from an operating level (I_B), at which the respective actor ( 7 , 8 ) is energized with a current appropriate for producing an operating-situation-dependent actuation pressure in the respective shift element ( 5 , 6 ), to a lower standby level (I_S), and when the engine start-stop function calls for the combustion engine ( 2 ) to be switched on, the energizing current of the actors ( 7 , 8 ) is adjusted from the standby level (I_S) to the operating level (I_B), the method comprising the step of: changing the energizing currents of the actors (