Method for shutting off an internal combustion engine

1. A method for shutting off an internal combustion engine in a vehicle that includes a machine comprising a control system, an internal combustion engine, and an electrical machine, the method comprising:

upon determining a beginning of a shutoff operation of the internal combustion engine, adapting, by the control system, an electrical torque of the electrical machine such that a total torque does not change per unit time by more than a predefined threshold, wherein the total torque includes at least a torque of the internal combustion engine and the electrical torque, wherein the adapting includes calculating a target torque of the electrical machine as a function of a present torque of the internal combustion engine and causing the electrical machine to adjust the electrical torque in accordance with the target torque.

2. The method as recited in claim 1 , further comprising calculating, by the control system, the torque of the internal combustion engine from an angle of a crankshaft and a cylinder filling of the internal combustion engine.

3. The method as recited in claim 1 , wherein the electrical torque is a function of the torque of the internal combustion engine.

4. A non-transitory machine-readable storage medium having stored thereon a computer program that is executable by control system and that, when executed by the control system, causes the control system to carry out a method for shutting off an internal combustion engine in a vehicle that includes an internal combustion engine and an electrical machine, the method comprising:

upon determining a beginning of a shutoff operation of the internal combustion engine, adapting an electrical torque of the electrical machine such that a total torque does not change per unit time by more than a predefined threshold, wherein the total torque includes at least a torque of the internal combustion engine and the electrical torque, wherein the adapting includes calculating a target torque of the electrical machine as a function of a present torque of the internal combustion engine and causing the electrical machine to adjust the electrical torque in accordance with the target torque.

5. The non-transitory machine-readable storage medium as recited in claim 4 , wherein the computer program is executable by a first calculation unit of the control system for carrying out the method in conjunction with a second calculation unit of the control system that is communicatively coupled to the first calculation unit.

6. The method as recited in claim 1 , wherein the target torque of the electrical machine corresponds to a negative of the torque of the internal combustion engine together with an offset.

7. A calculation unit, comprising:

circuitry configured to perform a method for shutting off an internal combustion engine in a vehicle that includes an internal combustion engine and an electrical machine, the method comprising:

upon determining a beginning of a shutoff operation of the internal combustion engine, adapting an electrical torque of the electrical machine such that a total torque does not change per unit time by more than a predefined threshold, wherein the total torque includes at least a torque of the internal combustion engine and the electrical torque, wherein the adapting includes calculating a target torque of the electrical machine as a function of a present torque of the internal combustion engine and causing the electrical machine to adjust the electrical torque in accordance with the target torque, and wherein a time span of a transfer function of the electrical machine is taken into account in the calculation of the target torque of the electrical machine.

8. The method as recited in claim 1 , wherein a time span of a transfer function of the electrical machine is taken into account in the calculation of the target torque of the electrical machine.

9. The method as recited in claim 1 , wherein the target torque of the electrical machine is calculated in a calculation unit of the control system and is transferred from the calculation unit to a second calculation unit of the control system that adjusts the electrical torque, of the electrical machine, in accordance with the target torque.

10. The method as recited in claim 1 , wherein the target torque of the electrical machine is calculated in a second calculation unit of the control system that adjusts the electrical torque, of the electrical machine, in accordance with the target torque, wherein information required for calculating the target torque is previously transferred from a first calculation unit of the control system to the second calculation unit.

11. The method as recited in claim 10 , wherein a time span that is required for a data transfer from the first calculation unit to the second calculation unit is taken into account in the calculation of the target torque of the electrical machine.

12. A control system comprising:

at least one interface for interfacing with an electrical machine and a sensor; and

circuitry configured to perform a method for shutting off an internal combustion engine in a vehicle that includes the sensor, the internal combustion engine, and the electrical machine, the method comprising:

upon determining a beginning of a shutoff operation of the internal combustion engine, communicating with the electrical machine via the at least one interface to adapt, based on output obtained via the at least one interface from the sensor, an electrical torque of the electrical machine such that a total torque does not change per unit time by more than a predefined threshold, wherein the total torque includes at least a torque of the internal combustion engine and the electrical torque, wherein the adaptation includes calculating a target torque of the electrical machine as a function of a present torque of the internal combustion engine and causing the electrical machine to adjust the electrical torque in accordance with the target torque.

13. A method for shutting off an internal combustion engine in a vehicle that includes a machine comprising a control system, an internal combustion engine, and an electrical machine, the method comprising:

upon determining a beginning of a shutoff operation of the internal combustion engine, adapting, by the control system, an electrical torque of the electrical machine such that a change per unit time in a total torque is zero, wherein the total torque includes at least a torque of the internal combustion engine and the electrical torque, wherein the adapting includes calculating a target torque of the electrical machine as a function of a present torque of the internal combustion engine and causing the electrical machine to adjust the electrical torque in accordance with the target torque.

14. The method as recited in claim 13 , wherein the target torque of the electrical machine corresponds to an offset plus a negative of the torque of the internal combustion engine scaled with a factor.