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US 11,565,702 B2Granted
Method for operating a hybrid powertrain
AssigneeZF Friedrichshafen AG
InventorsFlorian Petrich, Robert Reiser, Oliver Angele
Life of this patent
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Abstract
A method for operating a hybrid drive train of a motor vehicle includes: starting the motor vehicle solely with the aid of an electric machine; engaging a torque converter lockup clutch for rotationally fixing an impeller of a torque converter to a turbine wheel of the torque converter, wherein the turbine wheel is rotationally fixed to the electric machine; and engaging a clutch in order to drivingly connect the impeller to a motor vehicle drive unit, in order to start the motor vehicle drive unit.
Claims7
A method for operating a hybrid drive train (1) of a motor vehicle (2), comprising:
- starting the motor vehicle (2) solely with an electric machine (4);
- after starting the motor vehicle (2), engaging a torque converter lockup clutch (10) for rotationally fixing an impeller (6) of a torque converter (5) to a turbine wheel (7) of the torque converter (5), the turbine wheel (7) rotationally fixed to the electric machine (4);
- and
- after engaging the torque converter lockup clutch (10), engaging a clutch (8) in order to drivingly connect the impeller (6) to a motor vehicle drive unit (9) and thereby start the motor vehicle drive unit (9).
1 more element
Dependencies are inferred from the claim text.