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CHAPTER 73 Engine Fuel and Control General The engine fuel and control system calculates the quantity of fuel necessary to make the commanded thrust. The engine fuel and control system then meters the fuel and injects it into the combustor. The engine fuel and control system also sends the necessary fuel to the engine air system so the engine operation is efficient and stable. See the engine air system chapter for more information. (CHAPTER 75) The engine fuel and control system has three subsystems: * Fuel distribution * Fuel control * Fuel indication. Abbreviations And Acronyms * ACS - air conditioning system * ADIRU - air data inertial reference unit * AGB - accessory gearbox * ASM - autothrottle servo-motor * A/T - autothrottle * BITE - built-in test equipment GUN ALL PRE SB CFM56-7B 73-44 * BSV - burner staging valve GUN ALL * CDS - common display system * CDU - control display unit * CCDL - cross channel data link * DEU - display electronics unit * FIM - fault isolation manual * FF - fuel flow * EEC - electronic engine control * EHSV - electro-hydraulic servo valve * FWD - forward * HPSOV - high pressure shutoff valve * HPT - high pressure turbine * HPTACC - high pressure turbine active clearance control * HMU - hydro-mechanical unit * IDG - integrated drive generator * J - junction * LPT - low pressure turbine * LPTACC - low pressure turbine active clearance control * LRU - line replaceable unit * LVDT - linear variable differential transformer * N1 - low pressure compressor rotor speed * N2 - high pressure compressor rotor speed * P - pressure * PDL - portable data loader * PT - total pressure * RVDT - rotary variable differential transducer * SAC - single annular combustor * T - temperature * TAT - total air temperature * TBV - transient bleed valve * TGB - transfer gearbox * T/L - thrust lever * TLA - thrust lever angle * TLR - thrust lever angle resolver * T/R - thrust reverser * TRA - thrust resolver angle * VBV - variable bleed valve * VSV - variable stator vane ENGINE FUEL AND CONTROL - INTRODUCTION EFFECTIVITY GUN ALL 73-00-00 Page 2 D633A101-GUN Jun 10/2003 BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details. CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL 73-00-00-001 ENGINE FUEL AND CONTROL - INTRODUCTION ENGINE FUEL AND CONTROL - INTRODUCTION EFFECTIVITY GUN ALL PRE SB CFM56-7B 73-44 73-00-00 Page 3 D633A101-GUN Jun 10/2003 BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details. CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL 73-00-00-001 ENGINE FUEL AND CONTROL - INTRODUCTION ENGINE FUEL AND CONTROL - INTRODUCTION EFFECTIVITY GUN ALL POST SB CFM56-7B 73-44 73-00-00 Page 4 D633A101-GUN Jun 10/2003 BOEING PROPRIETARY - Copyright#- Unpublished Work - See title page for details. CFM56 ENGINES (CFM56-7) 737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL 73-00-00-001 General All engine fuel and control components are on the engine. The airplane fuel system supplies fuel to the engine fuel and control system. The airplane also gives and receives digital and analog control data to and from the engine fuel and control system. The engine fuel and control system uses this data to control the engine and give engine status to other airplane systems. Electronic Engine Control (EEC) The EEC controls the engine fuel and control system. Two channels in the EEC use input data to calculate the engine fuel and control outputs to operate the engine. Airplane Fuel System The airplane fuel system supplies pressurized fuel from the center or main tank. The fuel goes from the tank through a boost pump and a spar valve before the fuel goes to the engine. See the fuel system chapter for more information on the airplane fuel system. (CHAPTER 28) Engine Strut The engine strut has grounds that supply the airplane model data to the EEC. The EEC uses this to find the maximum certified thrust for the airplane. This is different from the rated thrust. The maximum certified thrust is the thrust the engines will produce if the thrust levers are put against the forward stops. The rated thrust is the maximum thrust the autothrottle will command. The strut grounds also give the EEC the engine position. Thrust Reverser System The EEC gets thrust reverser translating sleeve position from a www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：ENGINE FUEL AND CONTROLS
