Patent ID: 8682519

Claim:
A method for operating a hybrid drive of a motor vehicle, which hybrid drive has an internal combustion engine and first and second electric machines, comprising: generating a composite torque which drives the motor vehicle in a transient operating mode which occurs during a change of a setpoint torque by at least a predefined value, the composite torque in the transient operating mode being generated by summing at least a drive torque which is generated by the internal combustion engine, a drive torque which is generated by the first electric machine and a drive torque which is generated by the second electric machine, such that the second electric machine is switched on during the transient operating mode in order to help generate the composite torque, the second electric machine being controlled by a process comprising: at a start of the transient operating mode: activating the second electric machine with a delay after activating the first electric machine, wherein the second electric machine is activated at a time when it is detected the first electric machine approaches a system limit; and at an end of the transient operating mode: deactivating the second electric machine in advance of deactivating the first electric machine, with a time offset between deactivation of the second and first electric machines, or decreasing the drive torque generated by the second electric machine in advance of decreasing the drive torque generated by the first electric machine, with a time offset between decreasing the drive torques respectively generated by the second and first electric machines.