公开(公告)号：KR1020120030878A

公开(公告)日：2012-03-29

申请号：KR1020100092695

申请日：2010-09-20

Applicant: 현대자동차주식회사

Inventor： 최병영 ,  곽영홍 ,  공진국 ,  우수형 ,  서해원

IPC: F01L13/00 ,  F01L9/02 ,  F01M1/06 ,  F01L1/24

Abstract: PURPOSE: A hydraulic variable valve lifting device is provided to reduce the impact at the moment of closing a valve because the valve generates a lamp profile when the valve is closed. CONSTITUTION: A hydraulic variable valve lifting device comprises a housing(120), a valve driving piston(130), an EHV oil pump(155), a first oil path(160), a second oil path(165), and a orifice hole(125). The valve driving piston is installed to be slid in the inner part and a part of the valve driving piston is connected to a valve for opening/closing a port. The EHV oil pump supplies oil to a piston chamber. The first oil path supplies oil to a side of the piston chamber. The second oil path supplies oil to an inner end part of the piston chamber. The orifice hole is formed from a piston side of the valve driving piston to the upper part of piston side.

Abstract translation: 目的：提供液压可变气门提升装置，以减少阀关闭时的冲击，因为阀关闭时会产生灯廓。 构成：液压可变气门提升装置包括壳体（120），阀驱动活塞（130），EHV油泵（155），第一油路（160），第二油路（165）和孔 孔（125）。 阀驱动活塞安装成在内部滑动，并且阀驱动活塞的一部分连接到用于打开/关闭端口的阀。 EHV油泵向活塞室供油。 第一个油路向活塞室的一侧供油。 第二油路将油提供给活塞室的内端部分。 孔口从阀驱动活塞的活塞侧形成到活塞侧的上部。