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AssigneeHyundai Motor Company
InventorsEunho LEE, Younghong Kwak, Kiyoung Kwon, Jinkook Kong, Soohyung Woo, Kyoungjoon Chang
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The present invention relates to a continuously variable valve lift system for engines, which can prevent deterioration of fuel efficiency due to a friction loss by a return spring even in a low lift operation state by making a high lift swing angle be larger than a low lift swing angle, easily implement the CVVL by reducing a lost motion angle to an optimum condition, and securely generate an advancing effect in spite of reduction of the lost motion angle. Further, the continuously variable valve lift system is easy and convenient to adjust a clearance of an oscillating cam link, prevent the clearance of the oscillating cam link from being accumulated, and has a convenience of workability in adjusting the clearance in a narrow engine room.
1 A continuously variable valve lift system for engines comprising:
The system as defined in claim 1, further comprising:
The system as defined in claim 1, wherein the one end portion of the rocker arm and one end portion of the oscillating cam link are connected to each other via a connection shaft and the rocker arm and the oscillating cam link are spaced from each other in a longitudinal direction of the connection shaft and are hinge-joined with the connection shaft.
The system as defined in claim 1, wherein the link device includes a variable lever link, one end portion of which is rotatably coupled to the other end portion of the rocker arm, a middle portion of which is rotatably coupled to the other end portion of the variable lever, and the other end portion of which contacts with a driving cam.
The system as defined in claim 1, wherein the link device includes:
A continuously variable valve lift system for engines comprising:
A method of controlling a continuously variable valve lift system for vehicle engines, the method comprising:
Dependencies are inferred from the claim text.