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US 2009/0151665 A1Published application
Continuous variable valve lift system
AssigneeHyundai Motor Company
InventorDongheon Park
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Abstract
A continuously variable valve lift system according to an exemplary embodiment of the present invention includes an input cam, a drive shaft, a lifter including a contact portion and pivoting around the drive shaft in response to a rotation of the input cam, a valve unit, an output cam that contacts the contact portion, pivots around the drive shaft, and opens the valve unit, a return spring supplying restoring force to the output cam, and an adjusting unit adjusting a distance between the drive shaft and the contact portion.
Claims16
A continuously variable valve lift system comprising:
- an input cam;
- a drive shaft positioned substantially in parallel with the input cam;
- a lifter disposed at the drive shaft and pivoting around the drive shaft in response to a rotation of the input cam;
- an output cam disposed at the drive shaft coaxially with the lifter and pivoting around the drive shaft, the output cam comprising a contact portion and a lift activation portion;
- a valve unit configured to be opened or closed by the lift activation portion of the output cam;
- a return spring supplying restoring force to the contact portion of the output cam;
- and
- an adjusting unit disposed substantially at the drive shaft and adjusting a distance between the drive shaft and a contact point formed between the adjusting unit and the contact portion of the output cam.
5 more elements
Dependencies are inferred from the claim text.