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US 2006/0130791 A1Published application
Variable cam system
OwnerDong Chul Leeinventor
Life of this patent
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Abstract
A variable cam system which in one embodiment includes cams having a contacting surface formed by an involute curve, a cam shaft, and an actuator for moving the shaft in a longitudinal direction. The operating displacement of the cams may be varied by longitudinally moving the cam shaft.
Claims10
A variable cam system variably opening/closing intake and exhaust valves comprising:
- a cam shaft coupled to a timing gear movable in a longitudinal direction thereof;
- an actuator moving the cam shaft in the longitudinal direction of the cam shaft;
- and
- a plurality of cams secured to the cam shaft to open/close the valves by rotating, a contacting surface of each cam formed as a curved surface along the longitudinal direction of the cam shaft such that an operating displacement of the cam is varied corresponding to a longitudinal direction movement of the cam shaft.
1 more element
A variable cam system for opening and closing intake and exhaust valves comprising:
- a cam shaft defining a longitudinal direction;
- an actuator coupled to the shaft and operable to move the shaft back and forth in the longitudinal direction;
- a plurality of V-shaped cams attached to the shaft in a spaced-apart relationship to each other, each cam having a center portion and an end on either side of the center portion;
- the ends being higher than the center portion;
- at least one valve operably coupled to each cam and displaceable by rotational movement of the cam;
- wherein a relative longitudinal position of each cam is adjustable in relation to each at least one respective valve by the actuator.
3 more elements
Dependencies are inferred from the claim text.