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US 10,294,830 B2Granted
Mechanical cam phasing systems and methods
AssigneeHUSCO Automotive Holdings LLC
InventorsAustin Schmitt, Brian Heidemann, Dean Wardle, Allen Tewes, Michael Kujak
Life of this patent
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Abstract
Systems and methods for varying a rotational relationship between a cam shaft and a crank shaft on an internal combustion engine (i.e., cam phasing) are provided. In particular, systems and methods are provided that facilitates a rotary position of a first component to be accurately controlled with a mechanism causing a second component, which can be coupled to the cam shaft or crank shaft, to follow the rotary position of the first component.
Claims20
A cam phasing system comprising:
- a sprocket hub including a gear and a sprocket sleeve received within the sprocket hub;
- a cradle rotor at least partially received within the sprocket hub and configured to rotate relative to the sprocket hub;
- a plurality of locking assemblies arranged circumferentially around and radially between the sprocket sleeve and the cradle rotor;
- and
- a spider rotor at least partially received within the sprocket hub and configured to rotate to a known rotary position relative to the sprocket hub in response to an input displacement applied thereto;
- whereby rotation of the spider rotor in a desired direction to the known rotary position unlocks the plurality of locking assemblies, which, in turn, allows the cradle rotor to rotate relative to the sprocket hub and rotationally follow the spider rotor in the desired direction to the known rotary position.
3 more elements
A cam phasing system comprising:
- a sprocket hub;
- a cradle rotor including a central hub and a cradle sleeve received around the central hub;
- a plurality of locking assemblies arranged circumferentially around and radially between the cradle sleeve and the sprocket hub;
- and
- a spider rotor at least partially received within the sprocket hub and configured to rotate to a known rotary position relative to the sprocket hub in response to an input displacement applied thereto;
- whereby rotation of the spider rotor in a desired direction to the known rotary position unlocks the plurality of locking assemblies, which, in turn, allows the cradle rotor to rotate relative to the sprocket hub and rotationally follow the spider rotor in the desired direction to the known rotary position.
3 more elements
A cam phasing system comprising:
- a sprocket hub including an inner surface;
- a cradle rotor including a central hub and at least partially received within the sprocket hub;
- a sleeve at least partially received within the sprocket hub and arranged radially between the inner surface of the sprocket hub and the central hub of the cradle rotor;
- a plurality of locking assemblies circumferentially spaced and in engagement with the sleeve;
- and
- a spider rotor at least partially received within the sprocket hub and configured to rotate to a known rotary position relative to the sprocket hub in response to an input displacement applied thereto;
- whereby rotation of the spider rotor in a desired direction to the known rotary position unlocks the plurality of locking assemblies, which, in turn, allows the cradle rotor to rotate relative to the sprocket hub and rotationally follow the spider rotor in the desired direction to the known rotary position.
4 more elements
Dependencies are inferred from the claim text.