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US 11,231,097 B2Granted
Differential arrangement and method of influencing the overall torque of a shaft using a differential arrangement
AssigneeDeere & Company
InventorsMatthias Lang, Rainer Gugel, David Mueller
Life of this patent
Estimating the term…
Abstract
A differential arrangement having a gear stage that includes at least one input element and at least two output elements is provided. The at least one output element is connected to at least one electrical device in order to distribute torque.
Claims15
A differential arrangement having comprising:
- a gear stage that includes at least one input element and at least two output elements, wherein at least one output element is connected to at least one electrical device in order to distribute torque;
- wherein the gear stage includes a magnetic three-shaft epicyclic gear unit including an inner ring having a number of pole pairs, an outer ring having a number of electromagnetic coils, and a center ring having a number of pole rods;
- wherein the pole rods of the center ring are arranged such that the pole rods modulate a magnetic field between the first number of pole pairs and the number of electromagnetic coils;
- wherein the first number of pole pairs of the inner ring is more than the number of electromagnetic coils of the outer ring;
- wherein the inner ring has a slower rotational speed and a higher torque than the outer ring;
- wherein the inner ring is connected to the at least one input element and the outer ring is connected to the at least two output elements;
- wherein the inner ring, center ring, and outer ring are concentrically mounted, and the center ring is located radially between the outer ring and the inner ring;
- wherein the number of electromagnetic coils of the outer ring includes a first group of electromagnetic coils and a second group of electromagnetic coils;
- wherein the first group of electromagnetic coils has a different number of electromagnetic coils than the second group of electromagnetic coils;
- wherein the first group of electromagnetic coils is connected and the second group of electromagnetic coils remains inactive in a first condition;
- and
- wherein the number of connected electromagnetic coils can be varied by disconnecting the first group of electromagnetic coils and connecting the second group of electromagnetic coils in a second condition.
9 more elements
A method of influencing the overall torque of a shaft using a differential arrangement having a gear stage comprising at least one input element and at least two output elements, at least one output element of the at least two output elements being connected to at least one electrical device, the method comprising:
- combining a differential lock with the at least one electrical device;
- wherein the gear stage includes a magnetic three-shaft epicyclic gear unit including an inner ring having a first number of pole pairs, an outer ring having a number of electromagnetic coils, and a center ring having a number of pole rods;
- wherein the pole rods of the center ring are arranged such that the pole rods modulate a magnetic field between the number of pole pairs and the second number of electromagnetic coils;
- wherein the number of pole pairs of the inner ring is more than the number of electromagnetic coils of the outer ring;
- wherein the inner ring has a slower rotational speed and a higher torque than the outer ring;
- wherein the inner ring is connected to the at least one input element and the outer ring is connected to the at least two output elements;
- wherein the inner ring, center ring, and outer ring are concentrically mounted, and the center ring is located radially between the outer ring and the inner ring;
- wherein the number of electromagnetic coils of the outer ring includes a first group of electromagnetic coils and a second group of electromagnetic coils;
- wherein the first group of electromagnetic coils has a different number of electromagnetic coils than the second group of electromagnetic coils;
- wherein the first group of electromagnetic coils is connected and the second group of electromagnetic coils remains inactive in a first condition;
- and
- wherein the number of connected electromagnetic coils can be varied by disconnecting the first group of electromagnetic coils and connecting the second group of electromagnetic coils in a second condition.
9 more elements
Dependencies are inferred from the claim text.