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US 2026/0309063 A1Published application
CARRIER-LESS SPRING LOADED PLANETARY GEARSET USED WITH eVCT
AssigneeBorgWarner Inc.
InventorDouglas W. Perry
Life of this patent
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Abstract
An electrically-actuated variable camshaft timing (VCT) assembly including a gearbox assembly, having a sun gear, and a plurality of planet gears in meshing engagement with the sun gear, each of the plurality of planet gears including a ball socket at a radial gear face; and a rolling ball received within the ball socket, wherein the planet gears rotate about the rolling ball, and are configured to engage a ramped surface within the VCT assembly that moves the planet gears radially-outwardly from an axis of gearbox assembly rotation.
Claims5
An electrically-actuated variable camshaft timing (VCT) assembly, comprising:
- a gearbox assembly, having a sun gear, and a plurality of planet gears in meshing engagement with the sun gear, each of the plurality of planet gears including a ball socket at a radial gear face;
- a rolling ball received within the ball socket, wherein the planet gears rotate about the rolling ball, and are configured to engage a ramped surface within the VCT assembly that moves the planet gears radially-outwardly from an axis of gearbox assembly rotation;
- and
- a camshaft plate that slides axially along the axis of gearbox assembly rotation, wherein the ramped surface is positioned radially between an inner diameter of the end plate and an outer diameter of the end plate such that the ramped surface extends circumferentially around the end plate.
1 more element
Dependencies are inferred from the claim text.