Abstract: A method for operating an automatic transmission (1) of a motor vehicle in which a hydraulic pump, associated with a hydraulic system, for supplying pressure in the hydraulic system is driven by a drive engine and in which hydraulic shifting elements (B1, B2, B3, C1, C2) are actuated to engage gear steps. According to the method, before the drive engine is turned off for a short duration of time, at least one non-actuated shifting element (B1, B2, B3, C1, C2) of the automatic transmission (1) is actuated or filled with pressure oil.

Abstract: A method for operating an automatic transmission (1) of a motor vehicle in which a hydraulic pump, associated with a hydraulic system, for supplying pressure in the hydraulic system is driven by a drive engine and in which hydraulic shifting elements (B1, B2, B3, C1, C2) are actuated to engage gear steps. According to the method, before the drive engine is turned off for a short duration of time, at least one non-actuated shifting element (B1, B2, B3, C1, C2) of the automatic transmission (1) is actuated or filled with pressure oil.

Abstract: A method of shifting an automatic transmission of a motor vehicle having a hydrodynamic converter (6). The method comprising the steps of detecting a presence of predetermined stopping conditions; determining that a driver of the motor vehicle intends to cause the motor vehicle to change from a driving state to a stopped state, based on the presence of one of the predetermined stopping conditions; and automatically shifting the automatic transmission (8) into a standby mode, before the driving state has concluded. The shifting into the standby mode typically occurs when a rotational speed of the hydrodynamic converter (6) decreases to less than a rotational speed (120) of a motor and the retarder apparatus (10), of the automatic transmission, is disengaged no later than a time by which shifting into the standby mode occurs.

Abstract: A method of influencing an automated transmission of a motor vehicle having a tractional resistance detection unit, the method comprising the steps of reading data, via the tractional resistance detection unit, containing at least information about a torque of a drivetrain, a rotational speed of the drive train, and an acceleration of the vehicle, determining the external tractional resistance of the vehicle based upon the read data, and influencing the shift program by at least one of activation, adaptation and variation of the shift program, on a basis one of an actual and a statistically prepared data about the external tractional resistance of the vehicle.

Abstract: A method for shifting an automatic transmission (8) of a motor vehicle having a hydrodynamic, converter (6), when the vehicle slows from driving to a standstill a predetermined stopping condition of the automatic transmission (8) exists, such that the transmission (8) is shifted into neutral. To avoid disadvantages from shifting into neutral immediately after the motor vehicle is stationary, such as an increase in fuel consumption by a tractional torque operation of the converter, a disengagement impact upon shifting into the standby mode; an unexpected rolling of the vehicle, when stopping occurs on an incline following a shift into neutral. The automatic transmission (8), conforming to predetermined stopping conditions, shifts even during the driving state into neutral.

Abstract: The invention relates to a method for influencing an automated transmission taking into consideration the tractional resistance with which the magnitude of an external tractional resistance can be determined easily and without need of data exchange with devices outside the vehicle, the same as independently of a digitalized road map of the area in which the vehicle drives and with low construction complexity. In particular a topographical information of the area in which the vehicle drives is obtained which allows a tractional resistance detection unit, optionally in combination with additional influencing variables in relation to the external tractional resistance, to act upon the controller of an automated transmission so that by shifting the gear change points or selecting a suitable program, reduces both the fuel consumption and the pollutant and noise emissions.

Abstract: A method for determining characteristic parameter values within a transmission that includes, for example, hydraulically-operated shifting elements, hydro-dynamic brakes, and hydro-dynamic torque converters. Slip regulation is used to determine the actual slip at a transmission element, whose characteristic parameter values are to be determined, before engagement. This element to be adapted is activated by means of pressure application, and thus a specified slip is set that is clearly different from the actual slip at lower torques. The applied pressure or flow may be determined from the set slip, and occurrence of a set slip allows the occurring pressures to be determined.

Abstract: A method for determining characteristic parameter values within a transmission that includes, for example, hydraulically-operated shifting elements, hydro-dynamic brakes, and hydro-dynamic torque converters. Slip regulation is used to determine the actual slip at a transmission element, whose characteristic parameter values are to be determined, before engagement. This element to be adapted is activated by means of pressure application, and thus a specified slip is set that is clearly different from the actual slip at lower torques. The applied pressure or flow may be determined from the set slip, and occurrence of a set slip allows the occurring pressures to be determined.

Abstract: The oil supply with an orientation toward requirements in a transmission is implemented by a system of control and regulating modules. Mentioned in particular, here is a combined control and regulating module that is electronically driven and mechanically regulates the pressure. The controlled variable is a coil current that increases proportionally as the pressure increases. One disadvantage is that, in the case of a system failure, no coil current flows and the pressure is also minimal. In the present invention, by contrast, a maximum pressure is provided in the hydraulics even without current. This ensures that during a system failure that the operation of control elements that can only be shifted using high pressure will continue. This is implemented via a combined control and regulating module. The control unit is a magnet system that moves the regulating module and a sliding valve (14).