Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
May 31, 2011
Patent Application Number
12130519
Date Filed
May 30, 2008
Patent Primary Examiner
Patent abstract
A variable valve system includes a variable valve lifter for changing a first lift amount of one or more valves at a predetermined engine speed; a variable valve timing portion for controlling opening and closing timing of one or more valves; and a cylinder deactivation portion that changes a second lift amount of two or more valves in an alternating pattern.
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