Engine PCV system with hydrophobic, oleophobic membrane for air/oil separation
US7562652B2 · kind B2 · utility
6Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2007 |
| Grant date | Jul 21, 2009 |
| Priority date | — |
| Expiry date | Aug 23, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine crankcase emission control system for an internal combustion engine includes a cylinder air intake system connected to associated engine cylinders. The system also includes an engine crankcase. A crankcase air outlet connects the crankcase to the cylinder air intake system at a location subject to variable intake vacuum pressures to allow crankcase vapors to be drawn into inlet air passing to the cylinders. A hydrophobic, oleophobic membrane covers the crankcase air outlet. The membrane inhibits the passage of oil and water out of the crankcase through the crankcase air outlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.