Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A camshaft adjustment mechanism is provided having a rotor adapted to be connected to a camshaft, a stator arranged around the rotor, and a cover associated with the stator. An advance chamber and a separate retard chamber are formed between the rotor and the stator and separated from each other by a vane extending from the rotor. The camshaft adjustment mechanism further includes a locking apparatus adapted to lock the rotor from rotation. A first oil control valve is associated with the advance chamber and the retard chamber to control oil flow to the advance chamber and the retard chamber. A second oil control valve is associated with the locking apparatus to control oil flow to the locking apparatus.

Abstract: A camshaft arrangement (1) for changing the relative angle position of at least one cam of a camshaft (2) relative to a second cam of the camshaft (2), wherein the arrangement includes an angular adjustment device (3) having a stator (4) and a rotor (5) which is arranged such that it can be rotated relative thereto. The rotor (5) is connected to a shaft (6) in a rotationally fixed manner, the stator (4) is connected to a hollow shaft (7) in a rotationally fixed manner, and the shaft (6) and the hollow shaft (7) are arranged concentrically to one another. The at least one first cam is connected to the shaft (6) in a rotationally fixed manner and the at least one second cam is connected to the hollow shaft (7) in a rotationally fixed manner.

Abstract: A camshaft adjustment mechanism is provided having a rotor adapted to be connected to a camshaft, a stator arranged around the rotor, and a cover associated with the stator. An advance chamber and a separate retard chamber are formed between the rotor and the stator and separated from each other by a vane extending from the rotor. The camshaft adjustment mechanism further includes a locking apparatus adapted to lock the rotor from rotation. A first oil control valve is associated with the advance chamber and the retard chamber to control oil flow to the advance chamber and the retard chamber. A second oil control valve is associated with the locking apparatus to control oil flow to the locking apparatus.

Abstract: A camshaft arrangement (1) for changing the relative angle of at least one first cam of a camshaft (2) relative to a second cam of the camshaft (2), wherein the arrangement includes an angle adjusting device (3) having a stator (4) and a rotor (5) rotatably disposed relative to said stator, wherein the rotor (5) is rotationally fixed to a shaft (6), wherein the stator (4) is rotationally fixed to a hollow shaft (7), wherein the shaft (6) and the hollow shaft (7) are disposed concentric to each other, wherein the at least one first cam is rotationally fixed to the shaft (6), wherein the at least one second cam is rotationally fixed to the hollow shaft (7), and wherein the rotationally fixed connection between the rotor (5) and the shaft (6) is produced by at least one screw (8).

Abstract: A camshaft arrangement (1) for changing the relative angle position of at least one cam of a camshaft (2) relative to a second cam of the camshaft (2), wherein the arrangement includes an angular adjustment device (3) having a stator (4) and a rotor (5) which is arranged such that it can be rotated relative thereto. The rotor (5) is connected to a shaft (6) in a rotationally fixed manner, the stator (4) is connected to a hollow shaft (7) in a rotationally fixed manner, and the shaft (6) and the hollow shaft (7) are arranged concentrically to one another. The at least one first cam is connected to the shaft (6) in a rotationally fixed manner and the at least one second cam is connected to the hollow shaft (7) in a rotationally fixed manner.

Abstract: 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.

Abstract: 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.