Method to diagnose a failure of an OPCJ valve of an internal combustion engine
US9140152B2 · kind B2 · utility
1Cited by
0References
19Claims
0Family size
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Key dates
| Filing date | Mar 8, 2011 |
| Grant date | Sep 22, 2015 |
| Priority date | — |
| Expiry date | Jul 23, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16N2260/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method is provided to diagnose a failure of an OPCJ valve of an internal combustion engine. The OPCJ valve is located in an auxiliary line connecting an engine lubrication line to at least an oil jet for squirting lubricating oil from the engine lubrication line towards a piston surface. The method provides for monitoring the pressure variation in the engine lubrication line due to a switching signal sent to the OPCJ valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.