Staged fuel delivery system with secondary distribution valve
US5321949A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 1991 |
| Grant date | Jun 21, 1994 |
| Priority date | — |
| Expiry date | Jul 12, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02C7/228
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel delivery system for a turbine engine having a primary fuel flow circuit and a secondary fuel flow circuit. The primary fuel flow circuit has a unstaged-first manifold and a staged-second manifold. A control valve and flow meter regulate the amount of fuel flow to the unstaged and staged manifolds with a first mode of operation providing fuel to the unstaged manifold only, and a second mode of operation providing fuel to both the staged and unstaged manifolds. When high power is required of the engine, a secondary fuel circuit is provided with a secondary manifold which is connected to a distribution valve which opens when fuel flow is at a predetermined level. The invention allows fuel to be efficiently atomized at various levels of powered operation by having a control center which controls the opening and closing of the distribution valve and control valve based upon fuel flow rates fuel/air ratios and air start core speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.