Method and apparatus for monitoring operation of a gaseous fuel admission valve
US6112765A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 26, 1998 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | May 26, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8242
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In one embodiment of the present invention a method for monitoring operation of a solenoid actuated gaseous fuel admission valve is provided by measuring the resistance across a movable metering plate and a stationary plate in the valve. The plates are constructed with electro-conductive material and the plates comprise a variable resistor. The resistance value across the plates changes as a function as to whether the plates are contacting, not contacting, or there is contamination between them. A converter circuit produces a resistive signal that is indicative of the resistance value of the variable resistor. Processing means receives the resistive signal and responsively determines whether the valve is operating within predetermined performance parameters. A signal may be produced to drive an indicator to show whether the valve is functioning properly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.