Patent ID: 7219756

Claim:
A method for setting an operating point of a hybrid drive of a vehicle, the hybrid drive including an internal combustion engine and at least two electric motors as propulsion engines, and the output shafts of the propulsion engines being selectively, operatively linked to a drive train of the vehicle, comprising: setting operating points of the electric motors depending on a desired drive torque and an instantaneous vehicle velocity; wherein the operating points are set such that the sum of the mechanical output and the electrical losses of all the electric motors of the hybrid drive is zero, and wherein one electric motor operating in generator mode supplies the other electric motor operating in motor mode with energy and compensates for all electrical losses of both electric motors, and wherein at least one optimization criterion is taken into account when setting the operating points of the electric motors, and wherein minimum instantaneous fuel consumption rate of the internal combustion engine is used as an optimization criterion.