Air/oil separating device
US7059311B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 12, 2004 |
| Grant date | Jun 13, 2006 |
| Priority date | — |
| Expiry date | Sep 17, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/19
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An air/oil separating device for removing oil that has become entrained in blow-by gases passing through a crankcase of an internal combustion engine. The air/oil separating device includes a spiral element forming a spiral passageway and a perforated tube. As the air/oil stream passes through the spiral passageway and contacts its walls, a certain amount of the entrained oil is removed or scavenged such that it collects at the bottom of the spiral passageway. The treated air stream, now having less entrained oil, passes into the perforated tube and exits at an upper axial end, while the collected oil drains back into the crankcase via a lower axial end of the perforated tube. The air/oil separating device can be incorporated within a cap assembly also having an oil-fill cap and/or a PCV valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.