Device for the relative rotation of a camshaft relative to a crankshaft that drives the camshaft in an internal combustion engine
US6182622A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 1999 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | Oct 22, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L1/3442
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A device (1) for the relative rotation of a camshaft (5) relative to a crankshaft which drives the camshaft, which is arranged on the drive-side end (4) of the camshaft (5) which projects into a chain bay (2) is provided and essentially consists of a hydraulic adjusting drive. The device (1) includes a structural component (6) affixed to the crankshaft and a structural component (7) connected to the camshaft so that it is rotationally fixed to it. Both structural parts can then be rotated or fixed relative to each other using a hydraulic pressure agent acting upon two pressure chambers (8, 9) that are constructed within the device (1). The pressure agent supply and return can be controlled by a hydraulic control component (12) arranged in a cavity (10) of an axial structural component (11) of the device (1) and activated by an adjusting element (14) attached to a housing part (13) of the chain bay (2). According to the invention, the hydraulic control element (12) of the device is constructed as a fixed hydraulic part of an adjustable hydraulic valve (15), and is arranged starting from its control element (14) attached to the housing part (13) of the chain bay (2), projecting into …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.