Method for operating an automatic transmission of a hybrid vehicle, automatic transmission and hybrid vehicle

A method for operating an automatic transmission of a hybrid vehicle which has an electric traction machine and an internal combustion engine, the electric traction machine being configured to provide traction power output for the hybrid vehicle and to crank over the internal combustion engine, wherein a drag torque provided at the electric traction machine is required to crank over the internal combustion engine, the method comprising:

• producing a characteristic diagram for the electric traction machine, starting from a maximum available electrical power output for driving the electric traction machine, with respective curves for respective gears of the automatic transmission of the hybrid vehicle, the curves formed by plotting a torque against a rotational speed, and the characteristic diagram being adapted in a manner which is dependent on the drag torque to be provided, by each curve being reduced by the drag torque to be provided;
• and,
• predefining a shifting logic, in which respective shift points for shifting the automatic transmission are defined at points of intersection of the curves of adjacent gears of the adapted characteristic diagram;
• and,
• shifting the automatic transmission at the respective shift points using the shifting logic.