Device for varying valve timing of gas exchange valves of internal combustion engines, particularly a vane-type camshaft adjusting device
US6032626A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 28, 1999 |
| Grant date | Mar 7, 2000 |
| Priority date | — |
| Expiry date | Jul 28, 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, comprising a drive pinion (2) connected in driving relationship to a crankshaft, and a winged wheel (8) connected rotationally fast to a camshaft (7), the drive pinion (2) comprises 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 (8) having at least one wing (10) on its wheel hub (9), limiting walls (11) defining at least one working chamber (13) in the hollow space (6) of the drive pinion (2), which working chamber (13) is divided into two hydraulic pressure chambers (16, 17) by a wing (10) of the winged wheel (8) with the limiting walls (11) of the drive pinion (2) in sealing contact by axial sealing elements or by sealing gaps with the wheel hub (9) of the winged wheel (8), while the wings (10) of the winged wheel (8) are in sealing contact by axial sealing elements with the circumferential wall (3) of the drive pinion (2) wherein the free end face (14) of each wing (10) of the winged wheel (8) and/or the free end face (12) of each limiting wall (11) of the drive pinion (2) comprises an elastic sealing spri…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.