Abstract: A torque-limiting torsion gimbal for connecting an electric motor to a camshaft phaser includes an elongated body configured to extend from an end of a motor shaft of the electric motor to an input of a planetary gear assembly of the camshaft phaser; an angular-displacement-resistant end of the elongated body configured to engage an end of the motor shaft; and a key, positioned at another end of the elongated body opposite to the angular-displacement-resistant end, and configured to be received within and engage a slot at the input of the planetary gear assembly of the camshaft phaser to transmit torque from the electric motor to the planetary gear assembly; the elongated body prevents an angular displacement of the motor shaft relative to the input of the planetary gear assembly and permits the angular displacement of the motor shaft relative to the input of the planetary gear assembly when a mechanical stop of the camshaft phaser is engaged.

Abstract: A variable camshaft timing (VCT) system includes an independent camshaft phaser, receiving input from a crankshaft of an internal combustion engine, having an output coupled to one of an inner concentric camshaft or an outer concentric camshaft; and a dependent camshaft phaser, coupled to the other of the inner concentric camshaft or the outer concentric camshaft, comprising a half-Oldham link configured to permit radial movement of the inner concentric camshaft relative to the outer concentric camshaft in one radial direction and at least one pivotable arm configured to permit radial movement of the inner concentric camshaft relative to the outer concentric camshaft in another, different radial direction.

Abstract: A variable camshaft timing (VCT) system includes an independent camshaft phaser, receiving input from a crankshaft of an internal combustion engine, having an output coupled to one of an inner concentric camshaft or an outer concentric camshaft; and a dependent camshaft phaser, coupled to the other of the inner concentric camshaft or the outer concentric camshaft, comprising a half-Oldham link configured to permit radial movement of the inner concentric camshaft relative to the outer concentric camshaft in one radial direction and at least one pivotable arm configured to permit radial movement of the inner concentric camshaft relative to the outer concentric camshaft in another, different radial direction.

Abstract: An electrically-controlled variable camshaft timing (VCT) system including a sun gear, having an inner axial surface, configured to communicate torque from an output shaft of an electric motor to a gearbox assembly; and a collet sleeve having at least one slot configured to engage the output shaft of the electric motor and a relief section permitting radial-inward compression and an outer axial surface that releasably engages the inner axial surface of the sun gear such that the outer axial surface of the collet sleeve is engaged with the inner axial surface of the sun gear while an amount of torque applied to the sun gear by the output shaft is below a predetermined torque threshold and the sun gear and the collet sleeve are angularly displaced relative to each other when an amount of torque applied to the sun gear by the output shaft is at or above the predetermined torque threshold.

Abstract: An electrically-actuated variable camshaft timing (VCT) assembly including an electric motor for controlling the VCT assembly having a rotor and a motor output shaft; a gearbox assembly having an input coupled to the motor output shaft and an output configured to be coupled with a camshaft of an internal combustion engine; and a torque-limiting assembly coupled to the motor output shaft that prevents angular displacement of the motor output shaft relative to the rotor and includes a spring that releasably engages the rotor to the motor output shaft to prevent angular displacement of the rotor relative to the motor output shaft at or below a torque limit and permits angular displacement of the rotor relative to the motor output shaft above the torque limit.

Abstract: A valve assembly that can be employed in a variable camshaft timing (VCT) phaser assembly. The valve assembly includes a metal sleeve and a check valve. The check valve, in an implementation, has an integral construction with the metal sleeve. The integral construction has multiple designs, one of which includes an overmolded construction of the check valve with the metal sleeve. The valve assembly can also include a valve housing which, in the implementation of the VCT phaser assembly, is a center bolt.

Abstract: A valve assembly that can be employed in a variable camshaft timing (VCT) phaser assembly. The valve assembly includes a metal sleeve and a check valve. The check valve, in an implementation, has an integral construction with the metal sleeve. The integral construction has multiple designs, one of which includes an overmolded construction of the check valve with the metal sleeve. The valve assembly can also include a valve housing which, in the implementation of the VCT phaser assembly, is a center bolt.