Invention Grant
- Patent Title: Variable valve lift apparatus
- Patent Title (中): 可变气门举升装置
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Application No.: US14336617Application Date: 2014-07-21
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Publication No.: US09181827B2Publication Date: 2015-11-10
- Inventor: Sangyun Kim
- Applicant: Hyundai Motor Company
- Applicant Address: KR Seoul
- Assignee: HYUNDAI MOTOR COMPANY
- Current Assignee: HYUNDAI MOTOR COMPANY
- Current Assignee Address: KR Seoul
- Agency: Morgan, Lewis & Bockius LLP
- Priority: KR10-2013-0157574 20131217
- Main IPC: F01L1/34
- IPC: F01L1/34 ; F01L13/00

Abstract:
A variable valve lift apparatus for changing a lift of an intake or exhaust valve in at least two stages may include a lever body, a piston, a cylinder, a hydraulic pressure chamber, an active portion, a hinge portion, a roller, a rotation shaft, a guide slot, a hydraulic pressure supply portion, and an elastic member, in which the lever body may make a lever motion at an end with the intake valve or the exhaust valve connected thereto, the piston may make reciprocal motion in the cylinder, the rotation shaft may pass through the hinge portion and the roller and be a rotation center of the roller, moving together with the roller, the hydraulic pressure supply portion may supply hydraulic pressure to the hydraulic pressure chamber for moving the piston, and the elastic member may return the piston if the hydraulic pressure being supplied to the hydraulic pressure chamber is removed.
Public/Granted literature
- US20150167512A1 VARIABLE VALVE LIFT APPARATUS Public/Granted day:2015-06-18
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