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US 12,715,420 B2Granted
System and method for range extended electric vehicle
AssigneeFord Global Technologies, LLC
InventorThomas Jeremy Kostrzewski
Life of this patent
Estimating the term…
Abstract
Methods and systems for extending range and functionality of an electrified vehicle are described. In one example, a two-way clutch allows a vehicle to move in a forward or reverse direction under power of an electric machine. The electric machine may be operated as a generator and as a motor.
Claims20
A vehicle system, comprising:
- a first axle;
- a transmission including a planetary gear set mechanically coupled to the first axle, the planetary gear set including a sun gear, a ring gear, and a planetary carrier assembly configured to support planetary pinion gears;
- an internal combustion engine;
- a two-way clutch positioned between the internal combustion engine and the planetary carrier assembly;
- and
- a first electric machine coupled to the transmission,
- wherein the two-way clutch is configured to selectively ground the planetary carrier assembly to a transmission case to prevent rotation of the internal combustion engine based on a direction of attempted rotation of the planetary carrier assembly.
4 more elements
A method for operating a vehicle, the vehicle comprising:
- a first axle;
- a transmission including a planetary gear set mechanically coupled to the first axle, the planetary gear set including a sun gear, a ring gear, and a planetary carrier assembly configured to support planetary pinion gears;
- an internal combustion engine;
- a two-way clutch positioned between the internal combustion engine and the planetary carrier assembly;
- and
- a first electric machine coupled to the transmission,
- wherein the two-way clutch is configured to selectively ground the planetary carrier assembly to a transmission case to prevent rotation of the internal combustion engine based on a direction of attempted rotation of the planetary carrier assembly;
- the method comprising:
- adjusting an operating state of the two-way clutch in response to a position of a shifter.
6 more elements
A vehicle system, comprising:
- a first axle;
- a transmission including a planetary gear set mechanically coupled to the first axle, the planetary gear set including a sun gear, a ring gear, and a planetary carrier assembly configured to support planetary pinion gears;
- an internal combustion engine;
- a two-way clutch positioned between the internal combustion engine and the planetary carrier assembly;
- a first electric machine coupled to the transmission;
- and
- a controller including executable instructions stored in non-transitory memory that cause the controller to:
- operate the vehicle system in four different operating modes including electric vehicle forward four wheel drive mode, electric vehicle reverse four wheel drive mode, engine cranking mode, and engine on mode, and
- selectively operate the two-way clutch to ground the planetary carrier assembly to a transmission case to prevent rotation of the internal combustion engine based on a direction of attempted rotation of the planetary carrier assembly.
6 more elements
Dependencies are inferred from the claim text.