Torsion assembly for controllably providing torque to a camshaft
AssigneeSchaeffler Technologies AG & Co. KG
InventorsJeffrey Shewell, John Stallmann
Life of this patent
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Abstract
A torsion assembly for providing controllable torsion to a camshaft, including: a spring assembly including a first spring; and, a contact element arranged to engage at least one lobe for the camshaft. For a locked mode: the contact element is arranged to be displaced by the at least one cam lobe; the contact element is arranged to compress the first spring; and the first spring is arranged to impart a first torque to the camshaft via the contact element. For an unlocked mode, the contact element is arranged to be displaced by the at least one cam lobe and the contact element is arranged to impart a second torque, less than the first torque, to the cam shaft via the contact element.
Claims16
A torsion assembly for providing a controllable torsion to a camshaft, comprising:
- a spring assembly including a first spring;
- and,
- a contact element arranged to engage at least one cam lobe for the camshaft, wherein:
- for a locked mode:
- the contact element is arranged to be displaced by the at least one cam lobe;
- the contact element is arranged to compress the first spring;
- and,
- the first spring is arranged to impart a first torque to the camshaft via the contact element;
- and,
- for an unlocked mode:
- the contact element is arranged to be displaced by the at least one cam lobe;
- and,
- the contact element is arranged to impart a second torque, less than the first torque, to the cam shaft via the contact element.
A torsion assembly for providing a controllable torsion to a camshaft, comprising:
- a first spring preloaded to exert a first force in a first direction;
- a second spring preloaded to exert a second force, less than the first force, in the first direction;
- a lock element including a distal end;
- and,
- a contact element, wherein:
- for a locked mode:
- a position of the distal end is fixed;
- at least one lobe for the camshaft is arranged to displace the contact element;
- and,
- the displaced contact element is arranged to:
- compress the first spring;
- and,
- transmit a first torque to the camshaft;
- and,
- for an unlocked mode:
- the at least one lobe for the camshaft is arranged to displace the contact element;
- and,
- the displaced contact element is arranged to:
- compress the second spring;
- and,
- transmit a second torque, less than the first torque, to the camshaft.
Dependencies are inferred from the claim text.