Variable valve timing
US5329894A · kind A · utility
5Cited by
7References
18Claims
0Family size
Inventors
Key dates
| Filing date | Jul 17, 1992 |
| Grant date | Jul 19, 1994 |
| Priority date | — |
| Expiry date | Jul 17, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L1/356
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A means of varying both the opening and closing angle of internal combustion engine cam-operated valves by means of a mechanism which responds to the torque applied to the camshaft by the valve springs in such a way that the opening angle of the valves is retarded and the closing angle advanced and in which a means of inhibiting this operation can be incorporated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.