System and method for valve seating detection
US10041461B2 · kind B2 · utility
1Cited by
4References
19Claims
0Family size
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Key dates
| Filing date | Dec 15, 2016 |
| Grant date | Aug 7, 2018 |
| Priority date | — |
| Expiry date | Dec 15, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8242
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system for detecting valve seating in a valve system such as a fuel admission valve system includes seat detection circuitry coupled with a low-side driver circuit in solenoid actuator circuitry for the valve system. The seat detection circuitry includes a voltage probe for sensing voltage in the solenoid actuator circuitry, delay circuitry, and a comparator coupled with the delay circuitry and the voltage probe and having an output dependent upon change in the sensed voltage over time. A timing of voltage changes is observed to enable valve seating detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.