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US 8,037,854 B2Granted
Hydraulic pressure control device of variable valve system
AssigneeHyundai Motor Company
InventorYoungsoo Lee
Life of this patent
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Abstract
A hydraulic pressure control apparatus of a variable valve system may include a variable valve device for controlling lift characteristics of a valve, a hydraulic pressure control pipe in which an slot is formed from the interior toward the exterior and hydraulic pressure is supplied to the inside thereof, and a driving unit for rotating the hydraulic pressure control pipe, wherein the hydraulic pressure is selectively transferred to the variable valve through the slot according to a rotation of the hydraulic pressure control pipe.
Claims18
A hydraulic pressure control apparatus of a variable valve system, comprising:
- a variable valve device for controlling lift characteristics of a valve;
- a hydraulic pressure control pipe including a slot configured to pass from the interior toward the exterior thereof to supply hydraulic pressure to the variable valve device;
- and
- a driving unit for rotating the hydraulic pressure control pipe, wherein the hydraulic pressure supplied to the inside of the hydraulic pressure control pipe is selectively transferred to the variable valve device through the slot according to a rotation of the hydraulic pressure control pipe.
1 more element
Dependencies are inferred from the claim text.