Patent ID: 9045131
Filing Date: 2015-06-02
Classification: B60K,B60L,B60W,Y02T

Abstract:
1. A method for controlling a drive train of a hybrid vehicle, which can be driven by an internal combustion engine, respectively individually or together with an electric machine, which comprises an electrical energy store, power electronics and a motor/generator unit; wherein, depending on a first or second position of an operator control, the drive train is operated in a first operating mode corresponding to a high performance boost preparatory phase or in a second operating mode corresponding to a high performance boost phase; the method comprising the steps of: activating the first operating mode, wherein, in the first operating mode, the internal combustion engine is operated, the electrical energy store is charged by operating the motor/generator unit as a generator, and the electric machine is cooled, at least in certain areas, by an air conditioning device to increase a thermal storage capacity of the electric machine in preparation for activation of the second operating mode; and activating the second operating mode, wherein, in the second operating mode, a boost function of the electric machine is activated by operating the motor/generator unit of the cooled electric machine, together with the internal combustion engine, as a motor, to achieve a greater operating power during the high performance boost phase than during the high performance boost preparatory phase.