Engine having PCV separator inlet shielded by head gasket geometry
US8936013B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 26, 2013 |
| Grant date | Jan 20, 2015 |
| Priority date | — |
| Expiry date | Jul 26, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M35/10222
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine includes an engine block that defines a drain-back passage and a Positive Crankcase Ventilation (PCV) passage. The drain-back passage and the PCV passage are disposed in fluid communication with each other. A cylinder head is attached to the engine block. The cylinder head defines an oil return passage. The oil return passage is disposed in fluid communication with both the drain-back passage and the PCV passage. A head gasket is disposed between the engine block and the cylinder head, and includes a shelf that extends at least partially over the PCV passage to prevent liquids draining through the oil return passage into the drain-back passage, from entering the PCV passage, while allowing gasses flowing through the oil return passage to enter the PCV passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.