Variable valve lift device and valve apparatus for vehicle engine using the same
US9057291B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2013 |
| Grant date | Jun 16, 2015 |
| Priority date | — |
| Expiry date | Nov 25, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2013/0094
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A variable valve lift device and a valve apparatus for a vehicle engine may include a valve configured to open/close a combustion chamber, a cam having a predetermined cam profile and rotatable by receiving a power generated in the combustion chamber, a cam side rocker arm rotatable by the cam, a rocker shaft penetratively mounted into the cam side rocker arm, a valve side rocker arm installed on the rocker shaft to apply a pressure for opening the valve while being turned by the cam side rocker arm, a hydraulic interval adjustment device installed in the cam side rocker arm to adjust an interval between the cam side rocker arm and the valve side rocker arm, and a hydraulic interval maintaining device configured to maintain the interval between the cam side rocker arm and the valve side rocker arm adjusted by the hydraulic interval adjustment device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.