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US 8,464,673 B2Granted
Variable valve lift apparatus
AssigneeHyundai Motor Company
InventorsJin Kook Kong, Soo Hyung Woo
Life of this patent
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Abstract
A variable valve lift apparatus may include a control shaft slidably disposed within a camshaft, a cam which is slidably disposed to the camshaft and a high lift cam lobe and a low lift cam lobe is formed thereto, a valve opening/closing unit contacting the cam and a control portion which moves the cam for the high lift cam lobe or the low lift cam lobe selectively to contact the valve opening/closing unit according to operation of the control shaft.
Claims13
A variable valve lift apparatus comprising:
- a control shaft slidably disposed within a camshaft;
- a cam which is slidably disposed to the camshaft and a high lift cam lobe and a low lift cam lobe are formed thereto;
- a valve opening/closing unit slidably contacting the cam;
- and
- a control portion which moves the cam for the high lift cam lobe or the low lift cam lobe selectively to contact the valve opening/closing unit according to operation of the control shaft;
- wherein the control portion comprises:
- a shift lever which is slidably mounted to the control shaft, wherein a high lift path and a low lift path are formed along an outer surface of the shift lever, and a partition is formed therebetween;
- and
- a control pin which protrudes from an inner surface of the camshaft, and selectively rotates along the high lift path and the low lift path,
- wherein a connecting penetration is formed to the partition for the control pin to be movable between the high lift path and the low lift path.
7 more elements
Dependencies are inferred from the claim text.