Continuous flow fuel control system
US5052174A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1989 |
| Grant date | Oct 1, 1991 |
| Priority date | — |
| Expiry date | Aug 4, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/0651
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fuel control system for providing steady state fuel flow to a gas-turbine engine comprises a pulse-width modulated, solenoid-operated fuel metering valve, an engine speed transducer, and a remote microprocessor communicating with the valve and the speed transducer through an optical fiber. The valve is operated by a direct current signal which is pulsed at a frequency substantially higher than the natural frequency of the valve spring/plunger system, whereby the plunger remains axially displaced from the valve seat to provide continuous flow through the valve. The amount of axial plunger displacement and, hence, the fuel flow rate are prescribed by the pulse width of the signal directed through the valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.