Continuous variable valve lift apparatus

Details Continuous variable valve lift apparatus Continuous variable valve lift apparatus

2007-12-25

2007-12-25

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Rocker

C123S090160, C123S090390, C074S569000

Reexamination Certificate

active

11648738

ABSTRACT:
A continuous variable valve lift (CVVL) apparatus adjusting a valve lift, duration of valve opening and closing, and a valve timing includes a cam rotating by a cam shaft, a first shaft having a first radius, a second shaft having a second radius smaller than the first radius and coupled in the first shaft such that the first and second shafts are non-concentric, a roller moving upward and downward by a rotation of the cam and connected to the first shaft to be moved on the basis of a position of the first shaft, a first arm rotatably connected to the second shaft to be moved by the roller, and a second arm rotatably secured to a third shaft to open and close the valve by an operation of the first arm.

REFERENCES:
patent: 6955146 (2005-10-01), Werler
patent: 7261074 (2007-08-01), Kim et al.

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