Control unit and method for operating a hybrid drive having an internal combustion engine with reduced drag torque
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorsMichael Etzel, Michael Friedrich, Sebastian Liebert
Life of this patent
Estimating the term…
Abstract
A control unit is provided for a hybrid drive that includes an internal combustion engine and an electric machine. The control unit is configured to cause one or more drag torque reduction measures of the internal combustion engine to be terminated in preparation for firing the internal combustion engine. In addition, the control unit is configured to cause the electric machine to at least partly compensate for an increase in the drag torque of the internal combustion engine caused by the termination of the one or more drag torque reduction measures.
Claims12
A control unit for a hybrid drive comprising a combustion motor and an electric machine, wherein the control unit is configured to:
- cause one or more drag-torque-reducing measures of the combustion motor to be ended in preparation for a commencement of fired operation of the combustion motor;
- and
- cause the electric machine to at least partially compensate an increase of a drag torque of the combustion motor that is effected as a result of ending the one or more drag-torque-reducing measures.
A method for operating a hybrid drive having a combustion motor and an electric machine upon departure from drag-torque-reduced, and unfired operation of the combustion motor, the method comprising:
- ending one or more drag-torque-reducing measures of the combustion motor in preparation for a commencement of fired operation of the combustion motor;
- and
- operating the electric machine in order to at least partially compensate an increase of a drag torque of the combustion motor that is effected as a result of the ending of the one or more drag-torque-reducing measures.
Dependencies are inferred from the claim text.