Patent ID: 7908066

Claim:
A motor vehicle powertrain comprising: a controlled power source; a clutch; an automatically shifted transmission without a hydrodynamic torque converter; a data transfer system enabling data to be exchanged between the component parts of the powertrain; an additional power source distinct from the controlled power source; and a control system for producing a correction value for the power source torque on the basis of a comparison of the real behavior of the powertrain with a modeled behavior of a powertrain provided with a hydrodynamic torque converter; wherein the control system controls the additional power source to provide additional torque depending on said correction value, such that the additional torque provided by the additional power source is combined with the torque provided by the controlled power source to provide a greater torque than can be provided by the controlled power source alone, and such that for a particular gas pedal setting, the additional torque provided by the additional power source approximately corresponds to the increased torque provided by the hydrodynamic torque converter of the modeled powertrain at the same particular gas pedal setting.