GB1231791A - - Google Patents
Info
- Publication number
- GB1231791A GB1231791A GB750167A GB1231791DA GB1231791A GB 1231791 A GB1231791 A GB 1231791A GB 750167 A GB750167 A GB 750167A GB 1231791D A GB1231791D A GB 1231791DA GB 1231791 A GB1231791 A GB 1231791A
- Authority
- GB
- United Kingdom
- Prior art keywords
- controlled
- bellows
- line
- compressor
- fuel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
- F02C9/26—Control of fuel supply
- F02C9/28—Regulating systems responsive to plant or ambient parameters, e.g. temperature, pressure, rotor speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/301—Pressure
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
1,231,791. Gas turbine engine fuel systems. JOSEPH LUCAS (INDUSTRIES) Ltd. April 29, 1968 [Feb.16, 1967], No.7501/67. Heading F1G. . The invention relates to a gas turbine engine fuel control system comprising a control unit which controls the supply of fuel in accordance with a number of engine operating parameters, the parameters being engine speed and two pressures obtaining at different stages of the engine compressor, the two pressures being applied to a flexible device which acts to control the flow of fuel. In accordance with the invention, means are provided for modifying the response of the flexible device to the two pressures, the means comprising a device which is responsive to a further pressure obtained from a further stage of the engine compressor, the device being also responsive to the position of a manually set member. The device is arranged to actuate a valve in a passage which affords communication between passages through which said higher and lower pressures are applied to the flexible device, so as to modify the ratio of these pressures which is exerted upon the flexible device. In the embodiment the fuel control unit 11 comprises an inlet 10 and an outlet 12, the fuel metering device comprising an axially movable sleeve 14 formed with an orifice 15 which cooperates with a variable orifice formed between a fixed sleeve 16 and an axially movable sleeve 17. The fuel-flow is also controlled by a further sleeve 20 which moves axially in dependence on engine speed. The axial position of the sleeve 14 is controlled by means of a flexible device 18 in response to pressures at two different stages of the engine compressor. The axial position of the sleeve 17 is controlled in dependence on engine speed by means of a centrifugal governor device, the spring loading of which is controlled by a manual control 21. The flexible device 18 comprises a pair of bellows, one being evacuated and the other being subjected internally to a compressor pressure communicated through line 23. The bellows assembly is disposed within a chamber to which a further and higher compressor pressure is communicated through line 24. The lines 23 and 24 are inter-connected, restrictions 25, 26, 27, 28 being disposed as shown. The lines 24 and 23 are also inter-connected by a line 33 which is controlled by a valve member 32 at one end of a pivotally mounted lever, the other end of the lever being controlled by a bellows 35 and a bellows 36. The interior of the bellows 35 is connected through lines 35a and 41 to a further compressor pressure, in this case the pressure at the compressor inlet. The bellows 36 is evacuated. The bellows assembly 35, 36 is disposed within a chamber 34 to which the higher compressor pressure in line 24 is communicated through lines 43, 44, the outlet from the chamber 34 being controlled by a throttle valve 37 which is itself controlled by the manual lever 21 through the linkage 38. The connection between the lines 43, 44 is controlled by a valve member 39 which is pivotally mounted within a chamber 45 and is controlled by a bellows assembly 40, 42, the bellows 40 being connected to line 41 and so to compressor intake pressure, and the bellows 42 being evacuated. A further control is provided to limit the compressor pressure which is sensed in line 24. A line 47 communicates with line 24 downstream of the restrictor 27, the outlet of lines 47 to chamber 48 and so to atmosphere being controlled by a valve member 50 on a pivotally mounted lever. The lever is controlled by a bellows 52 to which the compressor pressure existing in line 24 is communicated through line 53, and by a spring-loading 51.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB750167 | 1967-02-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1231791A true GB1231791A (en) | 1971-05-12 |
Family
ID=9834330
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB750167A Expired GB1231791A (en) | 1967-02-16 | 1967-02-16 |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1231791A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2461104A1 (en) * | 1979-07-13 | 1981-01-30 | Lucas Industries Ltd | FUEL CONTROL DEVICE FOR GAS TURBINE ENGINE |
-
1967
- 1967-02-16 GB GB750167A patent/GB1231791A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2461104A1 (en) * | 1979-07-13 | 1981-01-30 | Lucas Industries Ltd | FUEL CONTROL DEVICE FOR GAS TURBINE ENGINE |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2705047A (en) | Fuel control system for gas turbine engines | |
US3650258A (en) | Fuel injection systems | |
US2778191A (en) | Tail pipe or afterburning control for turbojet engines | |
US2668415A (en) | Means for automatically controlling the supply of liquid fuel to prime movers | |
US2836957A (en) | Fuel control for a gas turbine power plant | |
US2943447A (en) | Engine acceleration fuel control responsive to speed scheduled compressor pressure ratio | |
US3991569A (en) | Fuel control system for gas turbine engine | |
US2649686A (en) | Apparatus for controlling the supply of liquid fuel to the combustion chambers of prime movers | |
GB1173841A (en) | Aircraft Gas Turbine Engine Fuel System | |
GB908629A (en) | Fuel control for gas turbine engines | |
US3007303A (en) | Compressor pressure modified fuel schedule for an afterburner | |
US3630029A (en) | Fuel controls for reheat systems of gas turbine engines | |
GB1231791A (en) | ||
US3174281A (en) | Afterburner fuel control | |
US2851230A (en) | Mach number responsive control for aircraft fuel system | |
US4019317A (en) | Fluid flow control valve for gas turbine engine fuel control system | |
US2753803A (en) | Means for controlling the supply of liquid fuel to the combustion chamber of a prime mover | |
US2529900A (en) | Fuel flow control for internalcombustion engines | |
US2880790A (en) | Starting fuel control for gas turbine engines | |
US2904026A (en) | Fuel injection system | |
US3411291A (en) | Fuel supply system for gas turbine engines | |
US3002350A (en) | Fuel control device for combustion engines having means for avoiding compressor stall | |
GB1107681A (en) | Combustion engine fuel control | |
US2964904A (en) | davies | |
GB2085522A (en) | Ic engine idling speed control systems |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |