Abstract: A camshaft phaser arrangement configured for a concentric camshaft assembly having inner and outer camshafts is provided. The camshaft phaser arrangement includes a first camshaft phaser, a second camshaft phaser, and a coupling that non-rotatably connects the first camshaft phaser to the concentric camshaft assembly. Each of the camshaft phasers is configured to be connected to either the inner or the outer camshaft. The coupling accommodates for radial and axial offset between the first camshaft phaser and the second camshaft phaser.

Abstract: A camshaft phaser arrangement configured for a concentric camshaft assembly having inner and outer camshafts is provided. The camshaft phaser arrangement includes a first camshaft phaser, a second camshaft phaser, a coupling, and at least one timing wheel connected to at least one of the first or second camshaft phaser. Each of the camshaft phasers is configured to be connected to either the inner or the outer camshaft. The at least one timing wheel defines at least one cutout that is configured to receive at least a portion of the coupling.

Abstract: A camshaft phaser assembly, including: an axis of rotation; a first hydraulic camshaft phaser including a first stator arranged to receive rotational torque, a first rotor including a plurality of first through-bores, and a first plurality of phaser chambers circumferentially bounded by the first stator and the first rotor; a second hydraulic camshaft phaser including a second stator non-rotatably connected to the first stator, a second rotor, and a second plurality of phaser chambers circumferentially bounded by the second stator and the second rotor; a first trigger wheel including a plurality of second through-bores connected to the plurality of first through-bores, non-rotatably connected to the first rotor, and arranged to identify a rotational position of the first rotor; and a second trigger wheel non-rotatably connected to the second rotor and arranged to identify a rotational position of the second rotor.

Abstract: A camshaft phaser assembly, including: an axis of rotation; a first hydraulic camshaft phaser including a stator arranged to receive rotational torque and including a plurality of radially inwardly extending protrusions, a rotor including a plurality of radially outwardly extending protrusions circumferentially interleaved with the plurality of radially inwardly extending protrusions, and a plurality of phaser chambers, each phaser chamber circumferentially bounded by a respective radially inwardly extending protrusion included in the plurality of radially inwardly extending protrusions and a respective radially outwardly extending protrusion included in the plurality of radially outwardly extending protrusions; a second hydraulic camshaft phaser; a cap; and a fluid chamber bounded in part by the cap and in fluid communication with a phaser chamber included in the plurality of phaser chambers; and a bolt arranged to non-rotatably connect the rotor and the cap to a camshaft.

Abstract: A camshaft phaser arrangement configured for a concentric camshaft assembly having inner and outer camshafts is provided. The camshaft phaser arrangement includes a first camshaft phaser, a second camshaft phaser, and a coupling that torsionally connects the first camshaft phaser to the second camshaft phaser. Each of the camshaft phasers is configured to be connected to either the inner or the outer camshaft. The coupling includes at least one flexible connector that provides for radial and axial movement between the first camshaft phaser and the second camshaft phaser.

Abstract: A camshaft phaser arrangement configured for a concentric camshaft assembly having inner and outer camshafts is provided. The camshaft phaser arrangement includes a first camshaft phaser, a second camshaft phaser, a coupling, and at least one timing wheel connected to at least one of the first or second camshaft phaser. Each of the camshaft phasers is configured to be connected to either the inner or the outer camshaft. The at least one timing wheel defines at least one cutout that is configured to receive at least a portion of the coupling.

Abstract: A camshaft phaser arrangement configured for a concentric camshaft assembly having inner and outer camshafts is provided. The camshaft phaser arrangement includes a first camshaft phaser, a second camshaft phaser, and a coupling that non-rotatably connects the first camshaft phaser to the concentric camshaft assembly. Each of the camshaft phasers is configured to be connected to either the inner or the outer camshaft. The coupling accommodates for radial and axial offset between the first camshaft phaser and the second camshaft phaser.

Abstract: A camshaft phaser assembly, including: an axis of rotation; a first hydraulic camshaft phaser including a first stator arranged to receive rotational torque, a first rotor including a plurality of first through-bores, and a first plurality of phaser chambers circumferentially bounded by the first stator and the first rotor; a second hydraulic camshaft phaser including a second stator non-rotatably connected to the first stator, a second rotor, and a second plurality of phaser chambers circumferentially bounded by the second stator and the second rotor; a first trigger wheel including a plurality of second through-bores connected to the plurality of first through-bores, non-rotatably connected to the first rotor, and arranged to identify a rotational position of the first rotor; and a second trigger wheel non-rotatably connected to the second rotor and arranged to identify a rotational position of the second rotor.

Abstract: A camshaft phaser assembly, including: an axis of rotation; a first hydraulic camshaft phaser including a stator arranged to receive rotational torque and including a plurality of radially inwardly extending protrusions, a rotor including a plurality of radially outwardly extending protrusions circumferentially interleaved with the plurality of radially inwardly extending protrusions, and a plurality of phaser chambers, each phaser chamber circumferentially bounded by a respective radially inwardly extending protrusion included in the plurality of radially inwardly extending protrusions and a respective radially outwardly extending protrusion included in the plurality of radially outwardly extending protrusions; a second hydraulic camshaft phaser; a cap; and a fluid chamber bounded in part by the cap and in fluid communication with a phaser chamber included in the plurality of phaser chambers; and a bolt arranged to non-rotatably connect the rotor and the cap to a camshaft.

Abstract: A camshaft phaser, including: a drive sprocket; a phaser section including a rotor with a first radially aligned channels, first axially aligned channels connected to the first radially aligned channels, and chambers formed by the rotor and a stator; and a rotor nose separately formed from the phaser section and non-rotatably connected to the phaser section, extending past a front side of the phaser section in an axial direction, and including second radially aligned channels and second axially aligned channels connected to the second radially aligned channels and the first axially aligned channels. The second radially aligned channels are arranged to receive fluid for the plurality of chambers to phase the phaser. The first radially aligned channels and the first and second axially aligned channels form respective flow paths for the fluid from the second radially aligned channels to the plurality of chambers.

Abstract: A camshaft phaser, including: a drive sprocket; a stator; a rotor at least partially rotatable with the stator; a rotor extension fixedly connected to the rotor, having a slot at at least one outer circumferential position; a spring for biasing the rotor relative to the stator, having a first and a second end, the first end secured in the slot in the rotor extension and the second end secured on the stator.

Abstract: A dual independent phaser, including: one only single locking cover; a first phaser section including a first stator, a first rotor, a first plurality of chambers formed by a first rotor and the first stator, and first locking pin non-rotatably engaged with the first rotor and axially displaceable to non-rotatably connect the first rotor and the one only single locking cover; and second phaser section including second stator, a second rotor, a second plurality of chambers formed by a second rotor and the second stator, and second locking pin non-rotatably engaged with the second rotor and axially displaceable to non-rotatably connect the second rotor and the one only single locking cover.

Abstract: A phasing system, including: a first phaser section including a first stator non-rotatably connected to a drive sprocket and first chambers formed by a first rotor and the first stator; a second phaser section located in a first axial direction from the first phaser section and including a second stator non-rotatably connected to the drive sprocket and second chambers formed by a second rotor and the second stator; a first portion of a camshaft non-rotatably connected to the first rotor, extending past the first stator in a second axial direction, and including first channels arranged to supply fluid to the first chambers; and a second portion of the camshaft non-rotatably connected to the first portion of the camshaft and extending past the second stator in the first axial direction and including second channels arranged to provide fluid to the second chambers.

Abstract: A camshaft phaser, including: a drive sprocket; a stator; a rotor at least partially rotatable with the stator; a rotor extension fixedly connected to the rotor, having a slot at at least one outer circumferential position; a spring for biasing the rotor relative to the stator, having a first and a second end, the first end secured in the slot in the rotor extension and the second end secured on the stator.

Abstract: A dual independent phaser, including: one only single locking cover; a first phaser section including a first stator, a first rotor, a first plurality of chambers formed by a first rotor and the first stator, and first locking pin non-rotatably engaged with the first rotor and axially displaceable to non-rotatably connect the first rotor and the one only single locking cover; and second phaser section including second stator, a second rotor, a second plurality of chambers formed by a second rotor and the second stator, and second locking pin non-rotatably engaged with the second rotor and axially displaceable to non-rotatably connect the second rotor and the one only single locking cover.

Abstract: A phasing system, including: a first phaser section including a first stator non-rotatably connected to a drive sprocket and first chambers formed by a first rotor and the first stator; a second phaser section located in a first axial direction from the first phaser section and including a second stator non-rotatably connected to the drive sprocket and second chambers formed by a second rotor and the second stator; a first portion of a camshaft non-rotatably connected to the first rotor, extending past the first stator in a second axial direction, and including first channels arranged to supply fluid to the first chambers; and a second portion of the camshaft non-rotatably connected to the first portion of the camshaft and extending past the second stator in the first axial direction and including second channels arranged to provide fluid to the second chambers.

Abstract: A camshaft phaser, including: a drive sprocket; a phaser section including a rotor with a first radially aligned channels, first axially aligned channels connected to the first radially aligned channels, and chambers formed by the rotor and a stator; and a rotor nose separately formed from the phaser section and non-rotatably connected to the phaser section, extending past a front side of the phaser section in an axial direction, and including second radially aligned channels and second axially aligned channels connected to the second radially aligned channels and the first axially aligned channels. The second radially aligned channels are arranged to receive fluid for the plurality of chambers to phase the phaser. The first radially aligned channels and the first and second axially aligned channels form respective flow paths for the fluid from the second radially aligned channels to the plurality of chambers.

Abstract: A rotor for a camshaft phaser assembly for an internal combustion engine. The rotor includes a base portion from which protrudes a plurality of vanes spaced over the circumference of the base portion of the rotor. An increased diameter stepped portion of the base portion of the rotor is provided over at least one section between at least two of the protruding vanes. The increased diameter portion allows for insertion of at least one locking pin assembly within the base portion of the rotor, reducing the remaining rotor base portion diameter to at least reduce material weight and size of the camshaft phaser assembly.

Abstract: A rotor for a camshaft phaser assembly for an internal combustion engine. The rotor includes a base portion from which protrudes a plurality of vanes spaced over the circumference of the base portion of the rotor. An increased diameter stepped portion of the base portion of the rotor is provided over at least one section between at least two of the protruding vanes. The increased diameter portion allows for insertion of at least one locking pin assembly within the base portion of the rotor, reducing the remaining rotor base portion diameter to at least reduce material weight and size of the camshaft phaser assembly.

Abstract: The camshaft phaser is affixed to one end of a concentric camshaft. The phaser is a vane-type camshaft phaser where the stator and the sprocket are fixed to the outer camshaft and the trigger wheel and rotor are fixed to the inner camshaft. The torsion spring is mounted on an outer wall of the stator, between the stator and the trigger wheel. The phaser is a compact unit with a high degree of reliability.