Method for controlling a hybrid drive train
AssigneeSchaeffler Technologies AG & Co. KG
InventorHolger Witt
Life of this patent
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Abstract
A method is provided for controlling a hybrid drive train comprising a first partial drive train including an internal combustion engine having a crankshaft and a second partial drive train, which is separated from the first partial drive train by a torsional elasticity, having an electric machine with a rotor. A rotational characteristic value of the first partial drive train is detected via a sensor arranged on the torsional elasticity. A rotational characteristic value of the rotor is detected via a device engaged with the rotor. A quality index is determined based on the rational characteristic value of the first partial drive train and the rotational characteristic value of the rotor. The electric machine is controller to optimize the quality index.
Claims18
A method for controlling a hybrid drive train including a first partial drive train with an internal combustion engine having a crankshaft and a second partial drive train, which is separated from the first partial drive train by a torsional elasticity, including an electric machine having a rotor, the method comprising:
- detecting a rotational characteristic value of the first partial drive train via a sensor arranged on the torsional elasticity;
- detecting a rotational characteristic value of the rotor via a device engaged with the rotor;
- determining a quality index based on the rotational characteristic value of the first partial drive train and the rotational characteristic value of the rotor;
- and
- controlling the electric machine to optimize the quality index;
- wherein the hybrid drive train includes a separating clutch downstream of the electric machine, the separating clutch being at least partially opened when the quality index exceeds a predetermined quality index.
A hybrid drive train, comprising:
- a first partial drive train including an internal combustion engine having a crankshaft
- a second partial drive train including an electric machine having a rotor;
- a torsional elasticity arranged between the first partial drive train and the second partial drive train, the torsional elasticity being connected to the crankshaft and the rotor;
- a sensor arranged on the torsional elasticity and configured to detect a rotational characteristic value of the crankshaft;
- a device engaged with the rotor and configured to detect a rotational characteristic value of the rotor;
- a separating clutch downstream of the electric machine;
- and
- a controller in communication with the sensor and the device, the controller being configured to:
- receive the rotational characteristic value of the first partial drive train from the sensor;
- receive the rotational characteristic value of the rotor from the device;
- determine a quality index based on the rotational characteristic value of the first partial drive train and the rotational characteristic value of the rotor;
- and
- control the electric machine to optimize the quality index;
- wherein the separating clutch is at least partially opened when the quality index exceeds a predetermined quality index.
Dependencies are inferred from the claim text.