Engine oil change detection systems and methods
US8746408B2 · kind B2 · utility
3Cited by
11References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2006 |
| Grant date | Jun 10, 2014 |
| Priority date | — |
| Expiry date | Jun 2, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01M2011/14
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine oil change detection control system is provided. The system includes an armature position module that monitors a solenoid armature position based on a position signal. A solenoid control module selectively generates a solenoid control signal and estimates a delay time based on the solenoid control signal and the armature position. An engine oil change detection module detects an engine oil change event based on the delay time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.