Positive crankcase ventilation valve performance evaluation
US10832497B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2018 |
| Grant date | Nov 10, 2020 |
| Priority date | — |
| Expiry date | May 3, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D18/001
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A process of evaluating performance of a positive crankcase ventilation (PCV) valve is disclosed. The process includes utilizing an optical sensor coupled to the PCV valve to collect baseline valve position data during a calibration phase. The baseline valve position data represents satisfactory PCV valve performance. The process also includes utilizing the optical sensor to collect operational valve position data during an operational phase. The process further includes determining whether a deviation of the operational valve position data from the baseline valve position data satisfies a performance threshold associated with unsatisfactory PCV valve performance. When the deviation satisfies the performance threshold, the process includes communicating an error code to an alert indicator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.