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US 11,701,959 B2Granted
Inline electromechanical variable transmission system
AssigneeOshkosh Corporation
InventorsDavid J. Steinberger, Jon J. Morrow, Andrew J. Kotloski, Eric E. Braun
Life of this patent
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Abstract
A drive system for a vehicle includes a first planetary device, a second planetary device directly coupled to the first planetary device, a first electromagnetic device at least selectively coupled to the first planetary device and including a first shaft, a second electromagnetic device directly coupled to the second planetary device and including a second shaft, and an output shaft coupled to the first planetary device. The first shaft and the second shaft are radially aligned with the first planetary device and the second planetary device. The output shaft is radially aligned with the first planetary device and the second planetary device.
Claims16
A drive system for a vehicle, comprising:
- a first planetary device;
- a second planetary device directly coupled to the first planetary device;
- a first electromagnetic device at least selectively coupled to the first planetary device, wherein the first electromagnetic device includes a first shaft;
- a second electromagnetic device coupled to the second planetary device, wherein the second electromagnetic device includes a second shaft, wherein the first shaft and the second shaft are radially aligned with the first planetary device and the second planetary device;
- an output shaft coupled to the first planetary device, wherein the output shaft is radially aligned with the first planetary device and the second planetary device;
- a connecting shaft directly coupled to the first planetary device;
- and
- a clutch positioned to selectively rotationally couple the second shaft to the connecting shaft, wherein the second electromagnetic device is rotationally engaged with the first planetary device when the clutch is engaged.
5 more elements
A drive system for a vehicle, comprising:
- a first planetary device including a first rotatable portion, a second rotatable portion, at least one connecting member coupling the first rotatable portion to the second rotatable portion, and a first carrier rotationally supporting the at least one connecting member;
- a second planetary device including a second carrier, wherein the first carrier is directly coupled to the second planetary device, and the second carrier is directly coupled to the first planetary device;
- a first electromagnetic device at least selectively coupled to the first planetary device;
- a second electromagnetic device coupled to the second planetary device;
- and
- an output shaft coupled to the first carrier;
- wherein the output shaft is aligned with the first electromagnetic device and the second electromagnetic device;
- and
- wherein the at least one connecting member is repositionable relative to the first carrier such that a speed ratio between one of the first rotatable portion, the second rotatable portion, and the first carrier and another of the first rotatable portion, the second rotatable portion, and the first carrier is variable.
6 more elements
A drive system for a vehicle, comprising:
- a first planetary device including a first rotatable portion, a second rotatable portion, at least one connecting member coupling the first rotatable portion to the second rotatable portion, and a first carrier rotationally supporting the at least one connecting member;
- a second planetary device including a second carrier, wherein the first carrier is directly coupled to the second planetary device, and the second carrier is directly coupled to the first planetary device;
- a first electromagnetic device at least selectively coupled to the first planetary device;
- a second electromagnetic device coupled to the second planetary device;
- an output shaft coupled to the first carrier, wherein the output shaft is aligned with the first electromagnetic device and the second electromagnetic device;
- a first clutch positioned to selectively rotationally couple the first electromagnetic device to a power takeoff output when engaged;
- and
- a second clutch positioned to selectively rotationally couple the first rotatable portion to the first electromagnetic device when engaged;
- wherein the second electromagnetic device is directly coupled to a sun gear of the second planetary device.
6 more elements
A drive system for a vehicle, comprising:
- a first planetary device including a first rotatable portion, a second rotatable portion, at least one connecting member coupling the first rotatable portion to the second rotatable portion, and a first carrier rotationally supporting the at least one connecting member;
- a second planetary device including a second carrier, wherein the first carrier is directly coupled to the second planetary device, and the second carrier is directly coupled to the first planetary device;
- a first electromagnetic device at least selectively coupled to the first planetary device;
- a second electromagnetic device coupled to the second planetary device;
- and
- an output shaft coupled to the first carrier, wherein the output shaft is aligned with the first electromagnetic device and the second electromagnetic device;
- and
- a clutch positioned to selectively rotationally couple the second electromagnetic device to the second rotatable portion when engaged.
5 more elements
A transmission including:
- a first planetary device and a second planetary device, the first planetary device including a carrier, wherein the carrier and the second planetary device are directly coupled, and wherein the second planetary device includes a ring gear;
- a first motor/generator at least selectively coupled to the first planetary device;
- a second motor/generator coupled to the second planetary device;
- an output shaft coupled to the carrier of the first planetary device and configured to selectively receive rotational mechanical energy from the first motor/generator and the second motor/generator;
- a clutch positioned to selectively couple the first motor/generator to a power takeoff output when engaged;
- and
- a brake is positioned to selectively limit rotation of the ring gear when engaged.
4 more elements
Dependencies are inferred from the claim text.