Valve actuating mechanism for an internal combustion engine
US5463988A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 13, 1994 |
| Grant date | Nov 7, 1995 |
| Priority date | — |
| Expiry date | Oct 13, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L1/267
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A valve actuating mechanism for the inlet valves E of a cylinder of an internal combustion engine has a first set of rocker arms 6 each of which actuates an inlet valve E and is actuated by a cam 2, 3, 4 for a lower engine speed range, and a second set of rocker arms 9 which are mounted between a first set of adjacent rocker arms 6 and are actuated by identical cams 8 for the higher engine speed range. The second set of rocker arms 9 is interconnected by means of a crosspiece 10. The first set of rocker arms 6 contains radially movable pistons 12 which in the higher speed range are displaced outward by oil pressure and against which the crosspiece 10 of the second set of rocker arms 9 can rest. Consequently, the valves E are actuated by the second set of rocker arms 9 as determined by the outline of the cams 8.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.