Method for operating a drive device of a motor vehicle and drive device for a motor vehicle
AssigneeRobert Bosch GmbH
InventorsJens-Werner Falkenstein, Manfred Hellmann
Life of this patent
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Abstract
A method for operating a drive device of a motor vehicle, which includes at least one internal combustion engine and at least one electric machine, a driving resistance, in particular an uphill gradient, being ascertained and the internal combustion engine being operated as a function thereof. The internal combustion engine is operated as a function of a driving resistance to be expected, which is determined as a function of an instantaneous driving resistance. A drive device for a motor vehicle is also described.
Claims13
A method for operating a drive device of a motor vehicle, which includes at least one internal combustion engine and at least one electric machine, the method comprising:
- detecting an uphill gradient;
- ascertaining a driving resistance from the detected uphill gradient;
- determining a driving resistance to be expected as a function of the detected uphill gradient and a change in the detected uphill gradient;
- scaling the change in the detected uphill gradient by a scaling factor that increases as a speed of the motor vehicle decreases;
- and
- operating the internal combustion engine as a function of the driving resistance to be expected.
A drive device for a motor vehicle, comprising:
- at least one internal combustion engine;
- at least one electric machine;
- and
- a device configured to:
- detect an uphill gradient;
- ascertain a driving resistance from the detected uphill gradient;
- determine a driving resistance to be expected as a function of the detected uphill gradient and a change in the detected uphill gradient;
- scale the change in the detected uphill gradient by a scaling factor that increases as a speed of the motor vehicle decreases;
- and
- operate the internal combustion engine as a function of the driving resistance to be expected.
Dependencies are inferred from the claim text.