Slide type continuous variable valve lift device

Details Slide type continuous variable valve lift device Slide type continuous variable valve lift device

2008-12-22

2011-12-20

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090390, C123S090440, C074S569000

Reexamination Certificate

active

08079333

ABSTRACT:
A slide type continuous variable valve lift (CVVL) device includes a swing arm rotating to press a valve; a cam lobe; a roller transmitting a driving force of the cam lobe to the swing arm; and a guide guiding the roller to move along a predetermined path. The CVVL device generally can minimize the number of places where sliding friction between respective parts may occur to minimize power loss and enable more precise operation control, reduce the number of parts to enhance the overall robustness of the device, and advance the time of maximum valve opening to improve the fuel efficiency of an engine.

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patent: 7069890 (2006-07-01), Fujita et al.
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patent: 7-63023 (1995-03-01), None
patent: 2001-329816 (2001-11-01), None

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