Schaeffler Technologies Ag & Co .kg

Craig Dupuis

Inhwa Chung

Brian Thomas Lee

Jeffrey Hemphill

Debora Manther

Philip George

Mike Kohrs

Matthew Evans

Steven Burke

Jens Schaefer

Matthias Kapp

A concentric cam shaft phaser, including: a first camshaft; a second camshaft located radially inside of the first camshaft; a control gear in contact with the first camshaft and fixedly connected to the first camshaft by a weld, a press fit, or a shrink fit; a rotor non-rotatably connected to the second camshaft; and a stator non-rotatably connected to the control gear.

Concentric camshaft phaser

A camshaft assembly, including a camshaft phaser with: stator; rotor including first plurality of circumferentially aligned ramps; and second plurality of circumferentially aligned ramps offset from the first plurality of ramps in a first axial direction; first and second wedge plates radially disposed between the rotor and the stator; and camshaft non-rotatably connected to the rotor. In a drive mode: the stator is arranged to receive first torque and to rotate in a first direction; the assembly is arranged to operate in successive cycles of a first phase followed by a second phase; in the first phase the first wedge plate non-rotatably connects the stator and the rotor while the second wedge plate is rotatable with respect to the stator; and in the second phase, the second wedge plate non-rotatably connects the stator and the rotor while the first wedge plate is rotatable with respect to the stator.

Camshaft phaser with two one-way wedge clutches

A concentric cam shaft assembly, including: a first camshaft; a second camshaft including at least a portion disposed radially within the first camshaft; and at least one phasing assembly including first and second electric motors and a first input gear arranged to rotate at a first speed in response to receiving rotational torque from a crankshaft of an engine. The rotational torque is arranged to rotate the first and second camshafts. The first electric motor is arranged to circumferentially off-set the first camshaft with respect to the first input gear. The second electric motor is arranged to circumferentially off-set the second camshaft with respect to the first input gear.

Electric phasing of a concentric camshaft

A camshaft arrangement () for changing the relative angle position of at least one cam of a camshaft () relative to a second cam of the camshaft (), wherein the arrangement includes an angular adjustment device () having a stator () and a rotor () which is arranged such that it can be rotated relative thereto. The rotor () is connected to a shaft () in a rotationally fixed manner, the stator () is connected to a hollow shaft () in a rotationally fixed manner, and the shaft () and the hollow shaft () are arranged concentrically to one another. The at least one first cam is connected to the shaft () in a rotationally fixed manner and the at least one second cam is connected to the hollow shaft () in a rotationally fixed manner. In order to establish a fixed connection between stator and hollow shaft, which requires little space, the rotationally fixed connection between stator () and hollow shaft () is established via a cover element () that is rigidly connected to the stator (), wherein the cover element () includes a borehole () for receiving a cylindrical section () of the hollow shaft () and a force-fitting and/or form-fitting connection between cover element () and hollow shaft () is formed.

Camshaft arrangement

The camshaft adjusting device has an inner spring retainer which mates with a rotor and an outer spring retainer which is fixed on a spring cover plate.

Growing community of inventors

Windsor, CA, United States of America

Craig Dupuis