METHOD FOR CONTROLLING A HYBRID DRIVE
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Accused Products
Abstract
A method is for controlling a hybrid drive of a vehicle, which includes at least one internal combustion engine and at least one electric machine, having a first clutch situated between the electric machine and the drive train of the vehicle and a second clutch situated between the electric machine and the internal combustion engine. In the method, a predefinable clutch torque is applied to the second clutch for a start of the internal combustion engine by the operating electric machine, the rotational speed of the internal combustion engine is monitored, and the clutch torque is incremented to a higher value if the rotational speed of the internal combustion engine is less than a predefinable threshold value within a predefinable time interval.
47 Citations
29 Claims
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1-9. -9. (canceled)
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10. A method for controlling a hybrid drive of a vehicle, having at least one internal combustion engine, at least one electric machine, a first clutch situated between the electric machine and a drive train of the vehicle, and a second clutch situated between the electric machine and the internal combustion engine, comprising:
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applying a predefinable clutch torque to the second clutch for a start of the internal combustion engine by the operating electric machine; monitoring a rotational speed of the internal combustion engine; and incrementing the clutch torque to a higher value if the rotational speed of the internal combustion engine is less than a predefinable threshold value within a predefinable time interval. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method for controlling a hybrid drive of a vehicle, including at least one internal combustion engine, at least one electric machine, a first clutch situated between the electric machine and a drive train of the vehicle, and a second clutch situated between the electric machine and the internal combustion engine, comprising:
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applying a predefinable clutch torque to the second clutch for a start of the internal combustion engine by the operating electric machine; monitoring a rotational speed of the internal combustion engine; and decrementing the clutch torque to a lower value if the rotational speed of the internal combustion engine is greater than a predefinable threshold value within a predefinable time interval. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A method for controlling a hybrid drive of a vehicle, having at least one internal combustion engine, at least one electric machine, a first clutch situated between the electric machine and a drive train of the vehicle, and a second clutch situated between the electric machine and the internal combustion engine, comprising:
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when the first clutch is disengaged and thus the drive train of the vehicle is isolated from the electric machine and the internal combustion engine, increasing a slip value of the second clutch along a ramp until the internal combustion engine is started; and saving the slip value of the second clutch corresponding to the start of the internal combustion engine and a corresponding torque of the electric machine as setpoint values. - View Dependent Claims (25, 26, 27, 28, 29)
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Specification