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US 2023/0054823 A1Published application
System and method for recirculating power
AssigneeDana Heavy Vehicle Systems Group, LLC
InventorJeffrey M. DAVID
Life of this patent
Estimating the term…
Abstract
Methods and systems for operating a driveline that includes two electric machines are described. In one example, one electric machine is operated in a generator mode and the other electric machine is operated in a motor mode so that electric power that is generated by the electric machine that is operated in the generator mode is consumed by the electric machine that is operated in the motor mode.
Claims20
A method for operating a vehicle, comprising:
- operating a first electric machine in a motor mode;
- operating a second electric machine in a generator mode, while operating the first electric machine in the motor mode, and while a net power amount exchanged between an electric energy storage device and the first electric machine and the second electric machine is substantially zero.
A vehicle system, comprising:
- a first electric machine;
- a second electric machine;
- an electric energy storage device;
- and
- a controller including executable instructions stored in non-transitory memory that cause the controller to operate the first electric machine in a motor mode and the second electric machine in a generator mode with the first electric machine consuming an entire amount of electric energy produced via the second electric machine.
2 more elements
A method for operating a vehicle, comprising:
- reducing a speed of the vehicle via a second electric machine in response to a braking request without providing electric power from the second electric machine to an electric energy storage device.
Dependencies are inferred from the claim text.