Integrated oil condition and level sensor
US7921703B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2008 |
| Grant date | Apr 12, 2011 |
| Priority date | — |
| Expiry date | Jul 12, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01M2011/148
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An oil condition and level sensor is provided that includes a solenoid body, a coil, an armature and a pole piece. The solenoid body defines an armature chamber between the armature and the pole piece. The armature is movable in the armature chamber in response to energizing of the coil. In an oil condition sensing system, the coil is operatively connected to a controller which can determine at least one of an oil temperature, oil viscosity, oil level, and an oil change occurrence. In one embodiment, four oil levels, including an overfill oil level and an excessively low oil level may be detected. The sensor is referred to as an integrated oil condition and level sensor as multiple sensing functions are integrated into one sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.