Rocker arm arrangement for multi-valve internal combustion engine
US4825822A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 1986 |
| Grant date | May 2, 1989 |
| Priority date | — |
| Expiry date | Aug 27, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02F2001/245
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In order to reduce the mass of a rocker arm and simultaneously simplify the adjustment of the valve clearances the rocker arm is pivotally mounted on a universal joint so that it may tilt and establish a three point contact between the universal joint and the tops of the two valve stems. By incorporating a hydraulic lifter in the universal joint arrangement constant lash free automatic zero clearance adjustment is rendered possible. Utilizing a roller as a cam follower permits a reduction in valve train friction loss. To prevent the rocker arm from meandering retaining flanges are provided on the rocker arm which envelope the tops of the valve stems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.