Oil sensor systems and methods of qualitatively determining oil type and condition
US5274335A · kind A · utility
59Cited by
30References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1992 |
| Grant date | Dec 28, 1993 |
| Priority date | — |
| Expiry date | Apr 6, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/48
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is an oil sensor system having an oil sensor including two spaced apart electrodes, a triangular waveform means, a comparison means and a signal means. The oil system is used in situ (i.e., used directly in the engine) to determine the presence of two-stroke or four-stroke oil, or the occurrence of an engine malfunction, such as a leakage of antifreeze into the oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.