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).