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US 12,276,214 B1Granted
Camshaft phase adjuster with improved vane construction
AssigneeRB Distribution, Inc.
InventorNicholas Baer
Life of this patent
Estimating the term…
Abstract
A camshaft phase adjuster having a vane construction that optimizes one or more of the seal contact pressure, wear properties, and/or the distribution of forces acting on the vane that are transmitted to the rotor. Vane configurations include vanes with non-parallel sides at the actuation end as well as a core and over-molded cover configuration. This provides enhanced wear properties and/or allows the use of lower strength materials for the vane which reduces costs.
Claims26
A camshaft phase adjuster, comprising:
- a stator having a plurality of inwardly directed projections;
- a rotor located within and rotatable relative to the stator, the rotor including a plurality of grooves therein;
- a plurality of vanes, with one of the vanes being located in each respective one of the grooves, with the vanes contacting an inner surface of the stator in locations between the inwardly directed projections, and the inwardly directed projections contacting the rotor in order to define a plurality of advancing chambers and a plurality or retarding chambers;
- each of the vanes including a root that is received in the respective groove and an actuation end that extends radially outwardly from the groove at a rotor surface of the rotor, with the actuation end being adapted to be acted upon by pressurized fluid in at least one of the advancing or retarding chambers;
- and
- the actuation end has a cross-section with reduced stiffness in an area radially outwardly from the rotor surface in comparison to a stiffness of the vane in the groove.
3 more elements
A camshaft phase adjuster, comprising:
- a stator having a plurality of inwardly directed projections;
- a rotor located within and rotatable relative to the stator, the rotor including a plurality of grooves therein;
- a plurality of vanes, with one of the vanes being located in each respective one of the grooves, with the vanes contacting an inner surface of the stator in locations between the inwardly directed projections, and the inwardly directed projections contacting the rotor in order to define a plurality of advancing chambers and a plurality or retarding chambers;
- each of the vanes including a root that is received in the respective groove and an actuation end that extends radially outwardly from the groove at a rotor surface of the rotor, with the actuation end being adapted to be acted upon by pressurized fluid in at least one of the advancing or retarding chambers;
- and
- each of the vanes includes a core and an outer cover on the core, the core being formed of a first material with a higher strength than a second material used to form the outer cover.
3 more elements
A camshaft phase adjuster, comprising:
- a stator having a plurality of inwardly directed projections;
- a rotor located within and rotatable relative to the stator, the rotor including a plurality of grooves therein;
- a plurality of vanes, with one of the vanes being located in each respective one of the grooves, with the vanes contacting an inner surface of the stator in locations between the inwardly directed projections, and the inwardly directed projections contacting the rotor in order to define a plurality of advancing chambers and a plurality or retarding chambers;
- each of the vanes including a root that is received in the respective groove and an actuation end that extends radially outwardly from the groove at a rotor surface of the rotor, with the actuation end being adapted to be acted upon by pressurized fluid in at least one of the advancing or retarding chambers;
- and
- the root has a greater thickness in a circumferential direction than a thickness of the actuation end.
3 more elements
Dependencies are inferred from the claim text.