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US 2017/0246944 A1Published application
Axle Assembly For Hybrid Electric Vehicle
AssigneeFord Global Technologies, LLC
InventorsGregory Daniel Goleski, David Allen Janson
Life of this patent
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Abstract
A hybrid rear axle provides a variety of functionality in addition to the functionality of a non-hybrid axle. The axle transmits power from an electric motor to the drive wheels at two selectable speed ratios to propel the vehicle. One of the two ratios is usable to propel the vehicle electrically with the engine stopped. With the drive wheels stationary, the axle transmits power from the driveshaft to the motor to charge a battery or from the motor to the driveshaft to start the engine.
Claims20
An electric axle comprising:
- a differential configured to transmit power from a carrier to two axle shafts;
- a layshaft driveably connected to the carrier;
- a first gear selectively coupled to the layshaft;
- an electric motor having a rotor shaft;
- a second gear driveably connected to the first gear and selectively coupled to the rotor shaft;
- and
- a third gear driveably connected to the layshaft and selectively coupled to the rotor shaft.
4 more elements
An hybrid electric drive comprising:
- a layshaft adapted to be driveably connected to drive wheels;
- a first gear selectively coupled to the layshaft and adapted to be driveably connected to a transmission output;
- an electric motor having a rotor shaft;
- a second gear driveably connected to the first gear and selectively coupled to the rotor shaft;
- and
- a third gear driveably connected to the layshaft and selectively coupled to the rotor shaft.
3 more elements
A hybrid electric vehicle comprising:
- an engine;
- drive wheels;
- a transmission configured to transmit power from the engine to a driveshaft;
- and
- a hybrid axle having an electric motor and configured to
- transmit power from the driveshaft to the drive wheels to propel the vehicle,
- transmit power from the motor to the drive wheels at two selectable speed ratios to propel the vehicle,
- transmit power from the driveshaft to the motor with the drive wheels stationary to charge a battery, and
- transmit power from the motor to the driveshaft with the wheels stationary to start the engine.
6 more elements
Dependencies are inferred from the claim text.