US4189914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supercritical fuel injection system
Assignee: National Aeronautics and Space Administration
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Filing: 1978-06-19
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Granted: 1980-02-26
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Expires: 1998-06-19
Abstract
Abstract A fuel injection system is provided for gas turbines or the like which includes a pair of high pressure pumps which provide fuel and a carrier fluid such as air at pressures above the critical pressure of the fuel. A supercritical mixing chamber mixes the fuel and carrier fluid and the mixture is sprayed into a combustion chamber for burning therein. The use of fuel and a carrier fluid at supercritical pressures promotes rapid mixing of the fuel in the combustion chamber so as to reduce the formation of pollutants and promote cleaner burning.
Inventors
- 👤 Cecil J. Marek
- 👤 Larry P. Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:20
CPC Classifications
F; F02; F02C; F02C7/00; F02C7/22; F02C7/236; F02C7/2365
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
73 words
A fuel injection system comprising means defining a combustion volume; means for supplying pressurized fuel at a pressure above the critical pressure thereof, means for supplying a pressurized carrier fluid at a pressure above the critical pressure of the fuel, mixing means for mixing said pressurized fuel and said pressurized carrier fluid to produce a fuel/carrier fluid mixture, and means for supplying said fuel/carrier fluid mixture to said combustion volume for combustion therein.
Claim 2
Dependent Claim
73 words
A fuel injection system comprising means defining a combustion volume; means for supplying pressurized fuel at a pressure above the critical pressure thereof, means for supplying a pressurized carrier fluid at a pressure above the critical pressure of the fuel, mixing means for mixing said pressurized fuel and said pressurized carrier fluid to produce a fuel/carrier fluid mixture, and means for supplying said fuel/carrier fluid mixture to said combustion volume for combustion therein.
Claim 3
Dependent Claim
34 words
A fuel injection system as claimed in claim 1 wherein said means defining combustion volume comprises a combustor and the output of said combustor is supplied to the turbine inlet of a gas turbine.
Claim 4
Dependent Claim
15 words
A fuel injection system as claimed in claim 1 wherein said carrier fluid comprises air.
Claim 5
Dependent Claim
20 words
A fuel injection system as claimed in claim 1 wherein said fuel/air mixture supply means comprises at least one nozzle.
Claim 6
Dependent Claim
22 words
A fuel injection system as claimed in claim 1 wherein said means for supplying said pressurized fuel comprises a high pressure pump.
Claim 7
Dependent Claim
21 words
A fuel injection system as claimed in claim 1 wherein said means for supplying pressurized air comprises a high pressure pump.
Claim 8
Dependent Claim
22 words
A fuel injection system as claimed in claim 5 wherein said means for supplying said pressurized air comprises a high pressure pump.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-02-25 | 1983-08-27 | 1984-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-25 | 1987-08-27 | 1988-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-25 | 1991-08-27 | 1992-02-26 | $7700.00 | Window Closed / Lapsed |