Valve drive system of an internal combustion engine
US5704316A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 1995 |
| Grant date | Jan 6, 1998 |
| Priority date | — |
| Expiry date | May 12, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A valve drive system of an internal combustion engine provided with a camshaft (20) adapted to be rotated by means of a crankshaft, a cam robe (38) rotatably mounted on the camshaft (20), a cam (24) formed integrally with the cam robe (38) and serving to open and close an intake valve (24) in cooperation with a valve spring (92), a viscous coupling (40) arranged between the camshaft (20) and the cam robe (38) and serving to transmit a rotatory force of the camshaft (20) to the cam robe (38), and a spiral spring (42) for connecting the camshaft (20) and the cam robe (38) and urging the cam robe (38) toward a predetermined rotational angle position with respect to the camshaft (20) .
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.