Method and apparatus for cleaning an oil control valve for an internal combustion engine
US6718921B2 · kind B2 · utility
4Cited by
15References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2002 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Jul 15, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2001/34443
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention is a method and apparatus to clean an oil control valve for use by an internal combustion engine. The invention causes the oil control valve to execute a cleaning routine when specific entrance criteria are met. This ensures cleaning of the valve to remove contaminants that are wedged, pinched or otherwise trapped on the valve, without interference in the operation of the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.