Camshaft
US7536986B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 10, 2007 |
| Grant date | May 26, 2009 |
| Priority date | — |
| Expiry date | Oct 19, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2001/34496
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a camshaft (1) having an inner shaft (3) arranged coaxially in an outer shaft (2) and mounted to rotate with respect to the outer shaft (2). The camshaft (1) has a first phase adjuster (7) and a second phase adjuster (8), the first phase adjuster (7) adjusting a phase relation of the inner shaft (3) and thus of the first cams in relation to a drive, in particular a crankshaft, while the second phase adjuster (8) adjusts a phase relation of the outer shaft (2) in relation to the drive. Thus the first and second phase adjusters (7, 8) each have a switchable hydraulic valve (9, 10), both being arranged inside the inner shaft (3).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.