Oil separator for blow-by gases
US5562087A · kind A · utility
Inventor
Key dates
| Filing date | Oct 17, 1995 |
| Grant date | Oct 8, 1996 |
| Priority date | — |
| Expiry date | Oct 17, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01M2013/0438
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An oil separator for blow-by gases formed in internal combustion engines includes a nozzle that has a plurality of holes located in the air flow path of the blow-by gases. The diameter of the holes and the thickness of the nozzle results in the flow of blow-by gases being accelerated as the gases flow through the nozzle so that small droplets of oil in the blow-by gases tend to be formed into fewer and larger oil droplets. A portion of the oil droplets will coalesce on the outer surface of the nozzle and drain to an oil drain. The remainder of the accelerated blow-by gas flows through an air gap adjacent the outer surface of the nozzle onto an impervious impingement plate or surface. At least a substantial portion of the remaining oil droplets in the blow-by gases will coalesce on the impingement surface and flow along the impingement surface to the oil drain for reintroduction into the oil reservoir of the engine. The cleansed blow-by gases then flow out of the oil separator through an outlet. The nozzle and the impingement surface can be generally flat plates or have a generally right cylindrical shape. In at least one embodiment of the present invention, the blow-by gases flow t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.