Apparatus for opening and shutting valves of an engine
US5809951A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 5, 1996 |
| Grant date | Sep 22, 1998 |
| Priority date | — |
| Expiry date | Nov 5, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L1/267
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to an opening/shutting means for intake valves of a car includes a rocker arm shaft, a plurality of rocker arms having respectively slide holes through which the rocker arm shaft passes, one end part of the rocker arm opening/shutting the intake valves and the other end part of the rocker arm being in contact with a cam on a cam shaft, an oil chamber provided at least at one end part of the rocker arm shaft to receive oil therein through an oil inlet connected with a gallery hole of a cylinder head, and a balance spring provided in one part of the oil chamber to support the rocker arm shaft against the oil pressure, wherein the amount of intake gas is automatically controlled according to varying speeds by the lift degree of the rocker arm pivoting on the rocker arm shaft which reciprocates in the slide hole of the rocker arm according to the balance between the oil pressure and the elasticity of the balance spring, so that the fuel consumption is reduced and the optimum engine output and the idle stability are achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.