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US 8,894,526 B2Granted
Powertrain for a hybrid electric vehicle
AssigneeFord Global Technologies, LLC
InventorsShailesh S. Kozarekar, Edward W. Haran
Life of this patent
Estimating the term…
Abstract
A vehicle powertrain including a planetary transmission including an output, a first member connected an a first power source and a second member connected to a second power source, a brake for alternately releasing the output and holding the output against rotation, a motor including a second output driveably connected to vehicle wheels, and a clutch for opening and closing a drive connection between the output and the vehicle wheels.
Claims11
A vehicle powertrain, comprising:
- a planetary gearset including an output rotatably fixed relative to a ring gear, a planet carrier connected to a first power source and the ring gear connected to a second power source;
- a brake for selectively releasing and holding the output against rotation;
- a motor including a second output continuously driveably connected to vehicle wheels through a countershaft;
- a clutch, having a first portion rotatably fixed on the countershaft and a second portion rotatably fixed relative to the ring gear via a pinion, the clutch selectively opening and closing a drive connection between the output and the vehicle wheels.
1 more element
A vehicle powertrain, comprising:
- a transmission including a ring gear, a sun gear connected to a starter-generator, a planet carrier connected to an engine and supporting planet pinions meshing with the sun gear and ring gear;
- a brake for selectively releasing and holding the ring gear against rotation;
- a motor including an output continuously driveably connected to vehicle wheels through a countershaft;
- a clutch, having a first portion rotatably fixed on the countershaft and a second portion rotatably fixed relative to the ring gear via a pinion, the clutch selectively opening and closing a connection between the ring gear and the vehicle wheels.
1 more element
A method for operating a vehicle powertrain, comprising:
- continuously driveably connecting a motor to vehicle wheels through a countershaft;
- connecting a sun gear of a transmission to a starter-generator;
- supporting planet pinions meshing with the sun gear and a ring gear on a planet carrier connected to an engine;
- using a clutch, having a first portion rotatably fixed on the countershaft and a second portion rotatably fixed to the ring gear via a pinion, to disconnect the ring gear from the vehicle wheels;
- engaging a brake to hold the ring gear against rotation and using the starter-generator to start the engine.
2 more elements
Dependencies are inferred from the claim text.