Patent ID: 8821343

Claim:
A method of operating a drive-train of a motor vehicle that has a drive aggregate comprising an internal combustion engine and a transmission connected between the drive aggregate and a drive output, an auxiliary output on an engine side is couplable to the internal combustion engine by a continuously variable transmission and a generator such that, when the internal combustion engine is running, the generator is drivable at a constant rotational speed regardless of a speed of the internal combustion engine so as to provide the engine-side auxiliary output via the generator with a defined electric input for operating the engine-side auxiliary output, the method comprising the steps of: regulating a condition parameter of the engine-side auxiliary output, which has a storage function in relation to the condition parameter that is to be regulated, by a regulator associated with the engine-side auxiliary output between limit values, the condition parameter of the engine-side auxiliary output is regulated as at least one of a function of a current actual value of the condition parameter, as a function of limit values of the condition parameter and as a function of a current driving situation and as a function of an anticipated driving situation of the motor vehicle, such that in the regulator, as a function of these input data, parameters are determined for an energy input into the engine-side auxiliary output and hence for a corresponding energy uptake from the internal combustion engine.