Multi-positional camshaft phaser with two one-way wedge clutches and spring actuator

A camshaft phaser, comprising:

• a gear arranged to receive torque from an engine;
• a housing non-rotatably connected to the gear and arranged to connect to a camshaft;
• a phase adjustment assembly including:
• an advance one-way clutch non-rotatably connected to the housing and including first gear teeth;
• a retard one-way clutch non-rotatably connected to the housing and including second gear teeth;
• and,
• a hub arranged to non-rotatably connect to the camshaft and including third gear teeth;
• and,
• a displacement assembly arranged to:
• for an advance mode, displace the hub in a first axial direction so that:
• the third gear teeth non-rotatably connect to the second gear teeth;
• and,
• the hub is rotatable with respect to the housing in a first circumferential direction;
• and,
• for a retard mode, displace the hub in a second axial direction, opposite the first axial direction, so that:
• the third gear teeth non-rotatably connect to the first gear teeth;
• and,
• the hub is rotatable with respect to the housing in a second circumferential direction, opposite the first circumferential direction.

A method of phasing a camshaft, comprising:

• receiving, using a gear non-rotatably connected to a housing, torque from an engine;
• for an advance mode, displacing first gear teeth non-rotatably connected to the camshaft in a first axial direction;
• non-rotatably connecting the first gear teeth with second gear teeth non-rotatably connected to the housing in a first circumferential direction;
• blocking, using the non-rotatable connection of the first and second gear teeth, rotation of the first gear teeth with respect to the housing, in the first circumferential direction;
• for a retard mode, displacing the first gear teeth in a second axial direction, opposite the first axial direction;
• non-rotatably connecting the first gear teeth to third gear teeth non-rotatably connected to the housing in a second circumferential direction, opposite the first circumferential direction;
• and,
• blocking, using the non-rotatable connection of the first and third gear teeth, rotation of the first gear teeth with respect to the housing, in the second circumferential direction.