System for variably actuating valves in internal combustion engines
US6955146B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 19, 2003 |
| Grant date | Oct 18, 2005 |
| Priority date | — |
| Expiry date | Jun 16, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/20582
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system for variably actuating valves by means of cams for internal combustion engines has the following type of construction: A camshaft is rotationally supported in the cylinder head and has a fixed position in relation to the valves and their associated stroke-transmitting arrangements. A stroke-transmitting arrangement guided in a fixed position is associated with each of the valves arranged in the cylinder head and closes by means of spring force. A variable position element for adjusting the stroke of the valve is guided in a stationary manner in the cylinder head. An intermediate element is supported and pivotably guided on the variable position element. A cam of the camshaft is engaged by the intermediate element and is supported in a stationary manner in the cylinder head, as well as the stroke-transmitting arrangement associated with the valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.