Camshaft phasers for concentrically arranged camshafts

A camshaft phaser assembly, comprising:

• an axis of rotation;
• a 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 chambers bounded at least in part by the plurality of radially inwardly extending protrusions and the plurality of radially outwardly extending protrusions;
• an electric camshaft phaser including:
• an output gear;
• and,
• an input including a notch;
• a first bolt arranged to non-rotatably connect the rotor to a first camshaft;
• a second bolt arranged to non-rotatably connect the output gear to a second camshaft, the second camshaft concentric with the first camshaft;
• and,
• a connection plate including:
• an annular body portion fixedly secured to the stator;
• a central opening bounded by the annular body portion and through which the axis of rotation passes;
• and,
• a protrusion:
• extending from the annular body portion in an axial direction;
• and,
• including a portion disposed in the notch, wherein the rotor and the output gear are rotatable with respect to each other about the axis of rotation.

A camshaft phaser assembly, comprising:

• an axis of rotation;
• a 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 chambers bounded at least in part by the plurality of radially inwardly extending protrusions and the plurality of radially outwardly extending protrusions;
• an electric camshaft phaser including:
• an output gear;
• and,
• an input;
• a first bolt arranged to non-rotatably connect the rotor to a first camshaft;
• a second bolt arranged to non-rotatably connect the output gear to a second camshaft, the second camshaft concentric with the first camshaft;
• a connection plate non-rotatably connected to the stator and to the input;
• a first channel:
• bounded at least in part by the first bolt and the rotor;
• and,
• in fluid communication with a chamber included in the plurality of chambers;
• and,
• a second channel:
• bounded at least in part by the second bolt;
• in fluid communication with the electric camshaft phaser;
• and,
• extending past the first channel in:
• a first axial direction;
• and,
• a second axial direction, opposite the first axial direction, wherein the rotor and the output gear are rotatable with respect to each other about the axis of rotation.