Operating arrangement for internal combustion engine poppet valves and the like
US4928650A · kind A · utility
11Cited by
8References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 28, 1989 |
| Grant date | May 29, 1990 |
| Priority date | — |
| Expiry date | May 28, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L1/32
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A first rocker arm is used to induce valve lift while a second one used to move the valve back to closed position. The rocker arms are arranged to engage the valve top or retainer surfaces at locations offset from the axis of the valve and to induce the valve to rotate during the lift and closing operations. Springs, hydraulic lifters or double adjust screw type arrangements are used to control clearances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.