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US 2009/0151673 A1Published application
Variable valve system
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorMyungsik Choi
Life of this patent
Estimating the term…
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.
Claims6
A variable valve system for use in an engine comprising a plurality of valves, the system comprising:
- a variable valve lifter for changing a first lift amount of one or more of the valves at a predetermined engine speed;
- a variable valve timing portion for controlling opening and closing timing of one or more of the valves;
- and
- a cylinder deactivation portion that changes a second lift amount of two or more of the valves in an alternating pattern.
1 more element
Dependencies are inferred from the claim text.