Device for varying timing of gas exchange valves of internal combustion engines, particularly a vane-type camshaft adjusting device
US6186103A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1999 |
| Grant date | Feb 13, 2001 |
| Priority date | — |
| Expiry date | Jul 6, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2001/34479
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A vane-type camshaft adjusting device for an internal combustion engine, with a drive pinion (2) connected in driving relationship to a crankshaft, and a winged wheel (7) connected rotationally fast to a camshaft. The drive pinion (2) a hollow space (6) which is defined by a circumferential wall (3) and two side walls (4, 5), into which hollow space (6) is inserted the winged wheel (7) having at least two wings (9) on its wheel hub (8). Limiting walls (10) define at least two working chambers (14) in the hollow space (6) of the drive pinion (2), and each of these working chambers (14) is divided into two hydraulic pressure chambers (18, 19) by one of the wings (9) of the winged wheel (7). The limiting walls (10) of the drive pinion (2) are in sealing contact by axial sealing strips (13) with the wheel hub (8) of the winged wheel (7), while the wings (9) of the winged wheel (7) are in sealing contact by axial sealing strips (17) with the circumferential wall (3) of the drive pinion (2). According to the invention, the sealing strips (13) of the limiting walls (10) of the drive pinion (2) and/or the sealing strips (17) of the wings (9) of the winged wheel (7) are connected to one ano…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.