Multi-function fuel metering valve
US4751942A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1987 |
| Grant date | Jun 21, 1988 |
| Priority date | — |
| Expiry date | Apr 24, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87322
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A hybrid fuel metering system incorporating a multi-function control valve (18) is shown. The valve has a sleeve (96), a piston (98) mounted for translational movement within the sleeve and a spool (100) mounted for translational movement in the piston. The piston has three positions for cooperating with the sleeve; a variable first position for metering fuel to an engine (12), a second position for directing fuel to a metering valve (20) and a third position for shutting off flow to the metering valve and to the engine to correct engine overspeed. The spool has two positions a first position to shut off flow to the engine and to the metering valve to shut off the engine and a variable second position to position the piston to meter flow to the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.