HK1212414A1 - Stabilizing a gas turbine engine via incremental tuning - Google Patents

Stabilizing a gas turbine engine via incremental tuning

Info

Publication number
HK1212414A1
HK1212414A1 HK16100228.6A HK16100228A HK1212414A1 HK 1212414 A1 HK1212414 A1 HK 1212414A1 HK 16100228 A HK16100228 A HK 16100228A HK 1212414 A1 HK1212414 A1 HK 1212414A1
Authority
HK
Hong Kong
Prior art keywords
stabilizing
gas turbine
turbine engine
engine via
via incremental
Prior art date
Application number
HK16100228.6A
Other languages
English (en)
Chinese (zh)
Inventor
Nicolas Demougeot
Donald Gauthier
Hany Rizkalla
Peter Stuttaford
Khalid Oumejjoud
Original Assignee
Gen Electric Technology Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gen Electric Technology Gmbh filed Critical Gen Electric Technology Gmbh
Publication of HK1212414A1 publication Critical patent/HK1212414A1/xx

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
    • F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/22—Fuel supply systems
    • F02C7/228—Dividing fuel between various burners
    • 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
    • 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
    • F02C9/32—Control of fuel supply characterised by throttling of fuel
    • F02C9/34—Joint control of separate flows to main and auxiliary burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
    • F23R3/34—Feeding into different combustion zones
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
    • F23R3/34—Feeding into different combustion zones
    • F23R3/343—Pilot flames, i.e. fuel nozzles or injectors using only a very small proportion of the total fuel to insure continuous combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
    • F23R3/34—Feeding into different combustion zones
    • F23R3/346—Feeding into different combustion zones for staged combustion
    • 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
    • F02C9/32—Control of fuel supply characterised by throttling of fuel
    • 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
    • F05D2270/01—Purpose of the control system
    • F05D2270/08—Purpose of the control system to produce clean exhaust gases
    • F05D2270/082—Purpose of the control system to produce clean exhaust gases with as little NOx as possible
    • 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
    • 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
    • F05D2270/31—Fuel schedule for stage combustors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/20—Gas turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
    • F23R2900/00013—Reducing thermo-acoustic vibrations by active means

Landscapes

  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Feedback Control In General (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Testing And Monitoring For Control Systems (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
HK16100228.6A 2009-05-26 2016-01-11 Stabilizing a gas turbine engine via incremental tuning HK1212414A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US18125309P 2009-05-26 2009-05-26
US12/786,189 US9097185B2 (en) 2009-05-26 2010-05-24 Stabilizing a gas turbine engine via incremental tuning

Publications (1)

Publication Number Publication Date
HK1212414A1 true HK1212414A1 (en) 2016-06-10

Family

ID=43218657

Family Applications (2)

Application Number Title Priority Date Filing Date
HK12107521.9A HK1167010A1 (en) 2009-05-26 2012-08-01 Stabilizing a gas turbine engine via incremental tuning
HK16100228.6A HK1212414A1 (en) 2009-05-26 2016-01-11 Stabilizing a gas turbine engine via incremental tuning

Family Applications Before (1)

Application Number Title Priority Date Filing Date
HK12107521.9A HK1167010A1 (en) 2009-05-26 2012-08-01 Stabilizing a gas turbine engine via incremental tuning

Country Status (11)

Country Link
US (1) US9097185B2 (xx)
EP (1) EP2435681B1 (xx)
JP (1) JP5730292B2 (xx)
KR (1) KR101541432B1 (xx)
CN (2) CN104775913B (xx)
BR (1) BRPI1011307A8 (xx)
CA (1) CA2763617C (xx)
ES (1) ES2701908T3 (xx)
HK (2) HK1167010A1 (xx)
MX (1) MX2011012634A (xx)
WO (1) WO2010138507A1 (xx)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9671797B2 (en) 2009-05-08 2017-06-06 Gas Turbine Efficiency Sweden Ab Optimization of gas turbine combustion systems low load performance on simple cycle and heat recovery steam generator applications
US9267443B2 (en) 2009-05-08 2016-02-23 Gas Turbine Efficiency Sweden Ab Automated tuning of gas turbine combustion systems
US9354618B2 (en) 2009-05-08 2016-05-31 Gas Turbine Efficiency Sweden Ab Automated tuning of multiple fuel gas turbine combustion systems
US8437941B2 (en) * 2009-05-08 2013-05-07 Gas Turbine Efficiency Sweden Ab Automated tuning of gas turbine combustion systems
CN102226428A (zh) * 2011-04-29 2011-10-26 哈尔滨工程大学 燃气轮机健康状态预测方法
ITCO20110028A1 (it) * 2011-07-21 2013-01-22 Nuovo Pignone Spa Sistema e metodo per l'autoregolazione di un sistema di combustione di una turbina a gas
GB201117942D0 (en) 2011-10-18 2011-11-30 Rolls Royce Goodrich Engine Control Systems Ltd Fuel system
US8997452B2 (en) * 2011-10-20 2015-04-07 General Electric Company Systems and methods for regulating fuel and reactive fluid supply in turbine engines
DE102012015454A1 (de) * 2012-08-03 2014-05-28 Rolls-Royce Deutschland Ltd & Co Kg Verfahren zur Regelung der Kraftstofftemperatur einer Gasturbine
US10378456B2 (en) * 2012-10-01 2019-08-13 Ansaldo Energia Switzerland AG Method of operating a multi-stage flamesheet combustor
US20140182297A1 (en) * 2013-01-03 2014-07-03 General Electric Company Gas turbine and method of controlling a gas turbine at part-load condition
US9376963B2 (en) 2013-01-16 2016-06-28 Alstom Technology Ltd. Detecting flashback by monitoring engine-dynamic spikes
WO2014133601A1 (en) * 2013-02-26 2014-09-04 Rolls-Royce Corporation Gas turbine engine and method for operating a gas turbine engine
US9422869B2 (en) * 2013-03-13 2016-08-23 General Electric Company Systems and methods for gas turbine tuning and control
US9328669B2 (en) * 2013-03-15 2016-05-03 Alstom Technology Ltd Dynamic and automatic tuning of a gas turbine engine using exhaust temperature and inlet guide vane angle
US9639071B2 (en) 2014-01-07 2017-05-02 General Electric Company Method and system for combustion mode transfer for a gas turbine engine
EP2899385A1 (de) * 2014-01-22 2015-07-29 Siemens Aktiengesellschaft Verfahren zur Regelung einer Gasturbine
EP2927599A1 (de) * 2014-03-31 2015-10-07 Siemens Aktiengesellschaft Verfahren zum Regeln einer Aufteilung von Brennstoff auf verschiedene Brennerstufen
EP2942565A1 (de) * 2014-05-05 2015-11-11 Siemens Aktiengesellschaft Verfahren zum Betreiben einer Brenneranordnung
US10006330B2 (en) * 2014-10-28 2018-06-26 General Electric Company System and method for emissions control in gas turbine systems
DE102014223637A1 (de) * 2014-11-19 2016-06-09 Rolls-Royce Deutschland Ltd & Co Kg Vorrichtung zur Bestimmung eines Stufungsverhältnisses, eine Gasturbine oder ein Flugzeugtriebwerk mit einer solchen Vorrichtung und eine Verwendung dafür
JP6689282B2 (ja) * 2015-01-30 2020-04-28 アンサルド エネルジア アイ・ピー ユー・ケイ リミテッドＡｎｓａｌｄｏ Ｅｎｅｒｇｉａ Ｉｐ Ｕｋ Ｌｉｍｉｔｅｄ エミッションおよびダイナミクスを維持するためのインクリメンタルチューニングと組み合わされた、ガスタービンエンジンの拡張された自動的ターンダウン
EP3101343A1 (en) * 2015-06-05 2016-12-07 Siemens Aktiengesellschaft Intelligent control method with variable thresholds based on vibration readings
WO2017005694A1 (en) * 2015-07-06 2017-01-12 Siemens Aktiengesellschaft Burner for a gas turbine and method for operating the burner
DE102017204025A1 (de) 2016-09-02 2018-03-08 Robert Bosch Gmbh Verfahren zum Steuern eines Zündbetriebs eines Heizsystems sowie eine Steuereinheit und ein Heizsystem
US10774753B2 (en) * 2016-10-21 2020-09-15 General Electric Company Indirect monitoring of aircraft combustor dynamics
US20180135534A1 (en) * 2016-11-17 2018-05-17 General Electric Company Systems and methods for adaptive fuel distribution in fuel circuits
US10436124B2 (en) * 2017-02-06 2019-10-08 Nicolas Demougeot Signal processing for auto-tuning a gas turbine engine
US10180107B2 (en) * 2017-03-08 2019-01-15 General Electric Company System and method for adjusting combustor fuel split
EP3543608A1 (en) * 2018-03-20 2019-09-25 Siemens Aktiengesellschaft Burner for a gas turbine and method for operating the burner
CN109162814B (zh) * 2018-09-03 2019-11-26 华电电力科学研究院有限公司 一种dln-2.6燃烧系统燃烧调整方法
US11156164B2 (en) 2019-05-21 2021-10-26 General Electric Company System and method for high frequency accoustic dampers with caps
US11174792B2 (en) 2019-05-21 2021-11-16 General Electric Company System and method for high frequency acoustic dampers with baffles
US20230193839A1 (en) * 2021-12-17 2023-06-22 Power Systems Mfg., Llc Methods and systems for extending an operating window of a gas turbine engine

Family Cites Families (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3080885A (en) * 1960-04-25 1963-03-12 Parker Hannifin Corp Variable area valve
FR2549576B1 (fr) 1983-07-21 1990-06-15 Cqfd Procede et dispositif de controle de fuite sur un reseau de distribution de fluide
FR2732407B1 (fr) 1995-03-29 1997-04-30 Snecma Procede pour eviter les instabilites dues a la combustion dans un turboreacteur
JP3810615B2 (ja) 2000-05-18 2006-08-16 三菱重工業株式会社 タービンの遠隔制御方法及びシステム
US7121097B2 (en) * 2001-01-16 2006-10-17 Catalytica Energy Systems, Inc. Control strategy for flexible catalytic combustion system
US6535124B1 (en) 2001-04-03 2003-03-18 Abb Automation Inc. Method and apparatus for digital analysis and signal conditioning in a turbine generator silo combustor
JP4056232B2 (ja) 2001-08-23 2008-03-05 三菱重工業株式会社 ガスタービン制御装置、ガスタービンシステム及びガスタービン遠隔監視システム
US6722135B2 (en) 2002-01-29 2004-04-20 General Electric Company Performance enhanced control of DLN gas turbines
JP2003314305A (ja) 2002-04-24 2003-11-06 Mitsubishi Heavy Ind Ltd ガスタービン制御装置、ガスタービンシステム及びガスタービン制御方法
JP3978086B2 (ja) 2002-05-31 2007-09-19 三菱重工業株式会社 航空機用ガスタービンシステム，及びガスタービンシステム並びにその動作方法
US6742341B2 (en) 2002-07-16 2004-06-01 Siemens Westinghouse Power Corporation Automatic combustion control for a gas turbine
US7302334B2 (en) * 2002-08-02 2007-11-27 General Electric Company Automatic mapping logic for a combustor in a gas turbine engine
US6823675B2 (en) 2002-11-13 2004-11-30 General Electric Company Adaptive model-based control systems and methods for controlling a gas turbine
US6993960B2 (en) 2002-12-26 2006-02-07 Woodward Governor Company Method and apparatus for detecting combustion instability in continuous combustion systems
US6976351B2 (en) 2003-04-04 2005-12-20 General Electric Company Methods and apparatus for monitoring gas turbine combustion dynamics
JP2004316506A (ja) 2003-04-15 2004-11-11 Mitsubishi Heavy Ind Ltd 燃焼器、ガスタービン及びジェットエンジン
US7284378B2 (en) 2004-06-04 2007-10-23 General Electric Company Methods and apparatus for low emission gas turbine energy generation
JP2005155590A (ja) 2003-10-30 2005-06-16 Mitsubishi Heavy Ind Ltd ガスタービン制御装置、ガスタービンシステム、ガスタービンの制御方法
EP1533569B1 (de) 2003-11-20 2016-02-17 Alstom Technology Ltd Verfahren zum Betrieb einer Feuerungseinrichtung
US6973791B2 (en) * 2003-12-30 2005-12-13 General Electric Company Method and apparatus for reduction of combustor dynamic pressure during operation of gas turbine engines
US7269953B2 (en) 2004-08-27 2007-09-18 Siemens Power Generation, Inc. Method of controlling a power generation system
US7278266B2 (en) * 2004-08-31 2007-10-09 General Electric Company Methods and apparatus for gas turbine engine lean blowout avoidance
JP4592513B2 (ja) 2004-09-30 2010-12-01 三菱重工業株式会社 ガスタービン制御装置、及びガスタービンシステム
US7210297B2 (en) 2004-11-04 2007-05-01 General Electric Company Method and apparatus for identification of hot and cold chambers in a gas turbine combustor
US7269939B2 (en) 2004-11-24 2007-09-18 General Electric Company Method and apparatus for automatically actuating fuel trim valves in a gas
US7269952B2 (en) 2005-03-02 2007-09-18 General Electric Company Method and apparatus for gas turbine dry low NOx combustor corrected parameter control
US7451601B2 (en) * 2005-05-10 2008-11-18 General Electric Company Method of tuning individual combustion chambers in a turbine based on a combustion chamber stratification index
US7441398B2 (en) 2005-05-20 2008-10-28 General Electric Company NOx adjustment system for gas turbine combustors
US7614238B2 (en) * 2005-11-22 2009-11-10 Honeywell International Inc. Method for lean blowout protection in turbine engines
GB2434437B (en) 2006-01-19 2011-01-26 Siemens Ag Improvements in or relating to combustion apparatus
JP2008270461A (ja) 2007-04-19 2008-11-06 Matsushita Electric Ind Co Ltd 蓄電ユニット
US7908072B2 (en) 2007-06-26 2011-03-15 General Electric Company Systems and methods for using a combustion dynamics tuning algorithm with a multi-can combustor
US8474268B2 (en) * 2007-08-16 2013-07-02 General Electric Company Method of mitigating undesired gas turbine transient response using event based actions
US8215117B2 (en) 2007-10-15 2012-07-10 United Technologies Corporation Staging for rich catalytic combustion
US8504276B2 (en) * 2008-02-28 2013-08-06 Power Systems Mfg., Llc Gas turbine engine controls for minimizing combustion dynamics and emissions
US8437941B2 (en) * 2009-05-08 2013-05-07 Gas Turbine Efficiency Sweden Ab Automated tuning of gas turbine combustion systems
US8417433B2 (en) * 2010-04-30 2013-04-09 Alstom Technology Ltd. Dynamically auto-tuning a gas turbine engine

Also Published As

Publication number Publication date
CA2763617A1 (en) 2010-12-02
BRPI1011307A8 (pt) 2018-08-14
ES2701908T3 (es) 2019-02-26
CN104775913B (zh) 2017-06-06
JP5730292B2 (ja) 2015-06-10
BRPI1011307A2 (pt) 2018-07-10
CN102459849A (zh) 2012-05-16
CA2763617C (en) 2016-01-26
US20100300108A1 (en) 2010-12-02
JP2012528277A (ja) 2012-11-12
HK1167010A1 (en) 2012-11-16
US9097185B2 (en) 2015-08-04
WO2010138507A1 (en) 2010-12-02
KR101541432B1 (ko) 2015-08-03
EP2435681A1 (en) 2012-04-04
EP2435681B1 (en) 2018-11-28
KR20120034668A (ko) 2012-04-12
MX2011012634A (es) 2012-04-20
CN104775913A (zh) 2015-07-15
CN102459849B (zh) 2015-01-14

Similar Documents

Publication Publication Date Title
HK1212414A1 (en) Stabilizing a gas turbine engine via incremental tuning
GB0809336D0 (en) A gas turbine engine arrangement
GB2471171B (en) Mechanical joint for a gas turbine engine
GB2467120B (en) A gas Turbine engine
EP2427635A4 (en) SUPPORT STRUCTURE FOR GAS TURBINE
GB2467121B (en) A gas turbine engine
GB201007063D0 (en) A gas turbine engine
GB0822676D0 (en) A gas turbine engine
GB0903423D0 (en) Variable drive gas turbine engine
GB0809759D0 (en) Gas turbine engine
GB0905736D0 (en) Cooled aerofoil for a gas turbine engine
PL2331878T3 (pl) Zespół komory spalania do silnika turbogazowego
GB0920094D0 (en) Reheat combustor for a gas turbine engine
PL2394309T3 (pl) Generator termoelektryczny do turbiny gazowej
EP2519729A4 (en) EXHAUST FOR A GAS TURBINE ENGINE
GB0914060D0 (en) A rotor assembly for a gas turbine
GB0922004D0 (en) A gas turbine generator
GB0903935D0 (en) Gas turbine engine
GB2469447B (en) Gas turbine engine casing assembly
GB0908502D0 (en) A balanced rotor for a turbine engine
GB0910752D0 (en) An annulus filler for a gas turbine engine
EP2410125A4 (en) GAS TURBINE
GB0910177D0 (en) A cooled component for a gas turbine engine
PL2449234T3 (pl) Sposób regulacji silnika gazowego
GB0821239D0 (en) A machine such as a gas turbine