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GEnx作为B787的备选发动机，其做了许多革新：风扇直径2.8米（787-8）、复合材料制成的风扇叶片、钛铝合金制成的第6、7级低压涡轮风扇叶片。为了减少燃油消耗，做到了19：2的涵道比，同时也有助于降低噪音，整流罩导向叶片有助于减少了二次流，双环预混旋流(TAPS)燃烧室减少对环境的污染，提升空气流量。降低维修成本，提高发动机的使用寿命，采用更有效的降低发动机内部温度的冷却技术。排出在低压压缩机和高压压缩机中杂物的保护装置。本节课主要讲解航线维护中接触到的发动机部件。 1Inlet Cowl 2EngineAnti-Ice Exhaust 3Fan Cowl PowerDoor Opening Switches (2) 4Fan Cowl (2) 5AmbientPressure Sensing Port (2) 6Thrust Reverser (2) 7Turbine Exhaust Nozzle 8Turbine Exhaust Centerbody 1 Inlet Cowl 2Fan CowlPower Door Opening Switches (2) 3Fan Cowl(2) 4AmbientPressure Sensing Port (2) 5Oil TankAccess Panel 6ThrustReverser (2) 7TurbineExhaust Nozzle 为了便于学习，分成四个部分进行讲解。 PART 1 1FanSpinner 2Fan Blade(18) 3T12 Sensor 4 Inlet Cowl 1 Fan Spinner 2FanAbradable Surface 3 BalanceBolt (36) 4 Fan Spinner Support Ring 5 Fan Blade Platform (18) 6 Booster Stage 1 Vane Assembly 7 Fan Blade (18) 8 Outlet Guide Vanes (48) 1 Fan Cowl (2) 2 Thrust Reverser (2) 3 Inlet Cowl 4 Ambient Pressure Sense Line (2) 5 Fan Cowl Hold Open Rods (4) 6ThrustReverser Actuator (2) 7Fan CowlActuator (2) 8 Thrust Reverser Hold Open Rod (2) 9Oil Tank PART 2 1 Inlet Cowl 2ForwardFan Case 3Fan Cowl(2) 4 Thrust Reverser (2) 5Ambient PressureSensing Line (2) 6 Fan Cowl Actuator (2) 7ThrustReverser Actuator (2) 8EEC/FADEC (Electronic Engine Control/FullAuthority Digital Engine Control) 9Fan CowlHold Open Rods (4) 10ThrustReverser Hold Open Rod (2) 11EMU(Engine Monitoring Unit) 1Thrust Reverser (2) 2Fan Cowl (2) 3 Thrust Reverser Forward Tension Latch Handle 4 Thrust Reverser Actuator (6) 1 Fan Cowl Support Beam 2 T12 Sensor Connectors 3ForwardFan Case 4EngineAnti-Ice Duct 1 Inlet Cowl 2 Thrust Reverser Test Enable Switch (TES) 3ThrustReverser Power Door Opening Switches (2)
1 Engine Anti-Ice Valve 2ForwardFan Case 3AftFan Case 4 Aircraft Interface Harnesses 5Fan CaseOverheat Detector 6 Fan Cowl Support Beam 7 Bootstrap Bracket Mounts
1 EMU (Engine Monitoring Unit) 2Aft FanCase
1ElectronicEngine Control (EEC) 2EECPressure Transducer Panel 3EngineRating Plug 4 PS25 air pressure Input 5PS3air pressure input 6P0air pressure Input
1 Air Bleed Deflector Panel (10) 2OutletGuide Vanes (48) 3Blank OffPanel (7)
1EngineAnti-Ice Duct 2 Fire Extinguishing Tube 3 Core Junction Box 4 Core Compartment Cooling Valve
1EngineIdentification Nameplate 2 Fan Hub Frame 3VariableBleed Valve Duct (10)
1 VFSG Air/Oil Heat Exchanger (2) 2 Outlet Guide Vanes (48)
1 Debris Monitoring Signal Conditioner 2Oil TankVent Line 3 Debris Monitoring Sensor 4 Scavenge Oil Return Line 5 Debris Monitoring System Air/Oil Separator 6OilLevel/Temperature Sensor 7Oil Tank 8 Oil Tank Filling Cap 9Oil TankInsulation Blanket
1 Oil Tank 2 Scavenge Oil Return Line 3OilTank Supply Line 4EngineAir Cooled Oil Cooler Tubes 5 Oil Tank Insulation Blanket 6 Aft Fan Case 7ThrustReverser Actuator (2) 8Fan CowlHold Open Rod (4) 9OilSupply Temperature Sensor 10EngineOil Supply and Scavenge Tubes
1Aft FanCase 2FanBooster Acoustic Panel (6) 3Air BleedDeflector Panel (10) 4OutletGuide Vanes (48) 5Fan OutletGuide Vane Fairings (48) 6 Fan Stator Case Acoustical Panel (8) 7Blank-OffPanel (7)
1PS25 tube 2 Fan Hub Frame 3 Variable Bleed Valve Duct (10) 4 A Sump Oil Supply Line
1VFSGAir/Oil Heat Exchanger (2) 2Engine AirCooled Oil Cooler 3 Outlet Guide Vanes (48) PART 3
1 Bifurcation Latch System Lower Rod 2BifurcationLatch System Lower Receiver 3 Bifurcation Latch System Handle
1 Configuration Box 2 Ignition System Cooling Duct 3 Variable Bleed Valve Actuator (2)
1Number 1Bearing Accelerometer Harness 2 T25 Sensor 3Fan HubFrame
1VariableBleed Valve Duct (10) 2 T25 Sensor 3N1 SpeedSensor
1PMA(Permanent Magnet Alternator) 2 Variable Stator Vane Actuator (2) 3Lubeand Scavenge Pump 4ScavengeOil Inlet Screens (5) 5Oil Filter 6 Oil Filter Drain Plug 4 7 Oil Filter Differential Pressure Sensor 8 Oil Supply Differential Pressure Sensor(Hidden)
1 Engine Anti-Ice Duct 2 Core Compartment Cooling Valve 3 Core Junction Box 4 VFSG Power Feeder Cables 5 Pressure Regulating and Shut Off Valve
1 Core Compartment Cooling Valve 2High Pressure Turbine Active Clearance Control(HPTACC) Valve 3Low Pressure Turbine Active Clearance Control (LPTACC)Valve 4 Ignition System Cooling Duct
1High Pressure Turbine Active Clearance Control(HPTACC) Valve 2ThrustLink (2) 3HPTACCValve Lock Out Pin 4HPTACCValve Position Indicator 5 HPTACC Valve Feedback 6HPTACCValve Fuel Lines 7HPTACCValve Lock Out Hole
1VariableFrequency Starter Generator (VFSG) 2IgnitionExciter Heatshield 3 VFSG Fuel/Oil Heat Exchanger 4VFSGOil Tubes 5 5VFSGOil Out Temperature Sensors (2) 6 Sump Eductor Valve
1 Fuel Nozzle (22) 2Igniter(2)
1Low Pressure Turbine Active Clearance ControlValve 2 Ignition Exciter Heatshield 3IgnitionSystem Cooling Duct 4LowPressure Turbine Active Clearance Control Duct 5EGTHarnesses (2) 6 Turbine Center Frame Accelerometer Harness
1 Turbine Center Frame 2LPT ActiveClearance Control Duct 3 Sump Eductor Air Tube 4LPT ActiveClearance Control Manifold 5 HPT Active Clearance Control Shroud
1ThrustLink (2) 2B SumpVent Line 34th StageAir Line (4) 4EGT Probe(8) 5 Fire Detector
1 Transient Bleed Valve Diffuser 24th StageAir Line (4) 3 Main Fuel Supply Hose 4TransientBleed Valve (TBV) 5ActuatorFuel Lines 67th StageAir Line (4) 7 Core Compartment Temperature Sensor 8 PS3 Sense Line 9 T3 Sensor
1ForwardLower Fire Detector 2 VFSG Pressure Service Lines 3LowerBifurcation Assembly 4Drain Mast 5 VFSG Oil In Temperature Sensors (2) 6VFSG OilDrain Plugs (4) 7Engine OilDrain Port (4)
1VariableStator Vane (VSV) Actuator (2) 2 Variable Stator Vane (VSV) Actuating Shaft (2) 3 Thrust Link (2)
1Flow SplitValve 2Fuel FlowMeter 3FuelMetering Unit 4 Main Fuel/Oil Heat Exchanger 5 Engine Driven Hydraulic Pump 6AccessoryGear Box (AGB) 7FuelFilter 8 Variable Frequency Starter Generator (2)
1AccessoryGear Box (AGB) 2 N2 Speed Sensor 3 Core Engine Hand Cranking Pad
1Main FuelPump Strainer 2 Main Fuel Supply Hose 3Main FuelPump 4Fuel PumpDifferential Pressure Sensor 5FuelFilter 6 Fuel Filter Differential Pressure Sensor 7FuelFilter Bowl Lock Tab 8 Fuel Filter Drain Plug 9 Main Fuel Pump Drain Plugs
1 Thrust Link (2) 2 Core Junction Box 3EngineAnti-Ice Duct 4 Main Fuel Supply Hose 5EngineDriven Hydraulic Pump Lines 6TransientBleed Valve
1 Engine Anti-Ice Duct 2 Booster Anti-Ice Valve 3PressureRegulating and Shut-Off Valve (PRSOV 4 Controller Air Cooler 5 PRSOV Controller 6 Booster Anti-Ice Pressure Sensors (2) 7 Core Junction Box
1 Transient Bleed Valve Diffuser 2 Fire Detector 3LPT ActiveClearance Control Air Shroud (6) 4 EGT Probe (8) 5 4th Stage Air Line (4) 6 7th Stage Air Line (4) 7 Main Fuel Supply Hose 8B & CSump Oil Supply Line
1 4th Stage Air Line (4) 2TransientBleed Valve (TBV) 3TransientBleed Valve Lock Out Pin 4 Transient Bleed Valve Position Indicator 5TransientBleed Valve Feedback
1 Fuel Metering Unit 2 Fuel Flow Meter 3Flow SplitValve 4 Main Fuel/Oil Heat Exchanger 5 Fuel Manifold Pressure Sensor 6FuelManifold Temperature Sensor 7 Main Fuel Pump 8 Accessory Gear Box (AGB
1 Fuel Metering Unit 2 Main Fuel Supply Hose 3Main FuelPump 4 Fuel Filter 5VariableFrequency Starter Generator (VFSG) (2) 6 Combustor Borescope Plug Access Panel
1 Turbine Center Frame 2HPT ActiveClearance Control Shroud (8) 3 LPT Active Clearance Control Air Manifold 44th StageAir Line (4) 5AGB Heatshield 67th StageAir Line (4) 7B & CSump Oil Supply Line 8 EGT Probe (8) 9 C Sump Oil Scavenge Line PART4
1 Thrust Link (2) 2 4th Stage Air Line (4) 3 7th Stage Air Line (4) 4Aft EngineMount 5TurbineCenter Frame Accelerometer 6EGT(Exhaust Gas Temperature ) Probe (8) 7 LPT Active Clearance Control Shroud 8 B Sump Vent Line
1 LPT Active Clearance Control Shroud 2 Low Pressure Turbine (LPT) Case 3 B Sump Cavity Drain Lines 4EGT(Exhaust Gas Temperature) Probe (8)
1 Thrust Reverser Deflection Limiter Strap (2) 2 Thrust Link (2) 3 Turbine Rear Frame 4LPT ActiveClearance Control Shroud (6) 5 Aft Engine Mount 6TurbineExhaust Nozzle
1 Turbine Rear Frame 2 Turbine Exhaust Nozzle 3C SumpCavity Drain 4C Sump OilScavenge Line 5 Aft Drain Mast 6C Sump OilSupply Line |
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