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US 9,809,105 B1Granted
Hybrid transaxle
AssigneeFord Global Technologies, LLC
InventorsDavid Allen Janson, David Gon Oh, Gregory Daniel Goleski
Life of this patent
Estimating the term…
Abstract
A power-split hybrid transaxle uses a chain-only final drive. In addition to transferring power from the primary axis to the differential axis, the chain provides about a 2.5:1 torque multiplication. Eliminating the planetary final drive gear set traditionally associated with a chain axis transfer reduces that axial length of the transaxle and provides more space for a power take-off unit.
Claims15
A hybrid transaxle comprising:
- a planetary gearset having a sun gear driveably connected to a first motor, a carrier driveably connected to an input shaft, and a ring gear driveably connected to a second motor;
- a first sprocket fixedly coupled to the ring gear;
- a second sprocket supported for rotation about a differential axis;
- a chain engaging the first and second sprockets;
- and
- a differential having a differential carrier fixedly coupled to the second sprocket.
3 more elements
A hybrid transaxle comprising:
- a first planetary gear set having three rotatable elements, a first of which is fixedly coupled to a first motor, a second of which is fixedly coupled to an input shaft, and a third of which is fixedly coupled to a first sprocket;
- a differential carrier radially offset from the first planetary gear set and fixedly coupled to a second sprocket;
- and
- a chain engaging the first and second sprockets.
1 more element
A hybrid transaxle comprising:
- a first planetary gear set having a first sun gear fixedly coupled to a first motor, a first carrier fixedly coupled to an input shaft, and a first ring gear fixedly coupled to a first sprocket;
- a differential carrier fixedly coupled to a second sprocket;
- and
- a chain engaging the first and second sprockets.
1 more element
Dependencies are inferred from the claim text.