Mechanical valve play compensation element for a valve drive on a piston combustion engine
US7146953B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 3, 2004 |
| Grant date | Dec 12, 2006 |
| Priority date | — |
| Expiry date | Dec 3, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L1/22
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a mechanical valve play compensation element for a valve drive on a piston combustion engine, comprising a first pressure part (1) which is axially displaceable in relation to a second pressure part (2) and which is fixed in such a way that it can turn about the axis of displacement; a torsion spring element (10) which acts between the first pressure part (1) and the second pressure part (2) and is axially flexible at least to a certain extent; and at least one helical surface (9.1) on the first pressure part (1), to which a corresponding helical surface (9.2) on the second pressure part (2) is allocated, these forming a pair of helical surfaces (9). The surfaces of the helical surface pair (9) are configured as a rough surface and are pressed against each other by the torsion spring element (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.