Hydraulic pressure control device of variable valve system

Details Hydraulic pressure control device of variable valve system Hydraulic pressure control device of variable valve system

2008-12-01

2011-10-18

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Hydraulic system

C123S090130, C123S090160

Reexamination Certificate

active

08037854

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.

REFERENCES:
patent: 7178489 (2007-02-01), Tanaka

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