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US 10,703,190 B2Granted
Hybrid vehicle engine brake
AssigneeFord Global Technologies, LLC
InventorsRaunak Singh Bindra, Mark Gerard Czapski, Norman Jerry Bird
Life of this patent
Estimating the term…
Abstract
A powersplit hybrid powertrain includes an electrically actuated brake that selectively engages a ring gear attached to a flywheel. The ring gear may be, for example, a starter ring gear. Engagement of the brake while the engine is stopped permits use of both electric machines to provide torque to vehicle wheels, thereby increasing the electric torque capacity of the powertrain. The position of the brake is more space efficient than conventional input shaft brakes.
Claims17
A vehicle powertrain comprising:
- an internal combustion engine having a crankshaft coupled to a flywheel having a ring gear;
- a transmission having an input shaft coupled to the flywheel;
- and
- a brake configured to selectively engage the ring gear to selectively hold the crankshaft against rotation.
1 more element
A vehicle powertrain comprising:
- an internal combustion engine having a crankshaft coupled to a flywheel having a ring gear;
- a planetary gear set having a sun driveably connected to a first electric machine, a carrier sun coupled to the flywheel, and a ring drivably connected to a differential;
- and
- a second electric machine driveably connected to the differential;
- and
- a brake configured to selectively engage the ring gear to selectively hold the crankshaft against rotation.
3 more elements
A transmission comprising:
- a flywheel having a ring gear and adapted for fixation to a crankshaft of an internal combustion engine;
- an input shaft coupled to the flywheel;
- and
- a brake configured to selectively engage the ring gear to selectively hold the crankshaft against rotation.
1 more element
Dependencies are inferred from the claim text.