庞巴迪挑战者604公务机飞行员训练指南 CL_604-AUXILIARY_POWER_UNIT.pdf24页

PILOT TRAINING GUIDE

AUXILIARY POWER UNIT

Table of Contents
Introduction ......................................................................................................................... 5-1 APU Enclosure.............................................................................................................. 5-1 Power Section and Accessory Gearbox ............................................................................. 5-2 Description ....................................................................................................................5-2 Components and Operation .......................................................................................... 5-2 Power Section ......................................................................................................... 5-2 Gearbox .................................................................................................................. 5-2 Lubrication System.................................................................................................. 5-2 Generator Adapter ..............................................................................................................5-4 Description ....................................................................................................................5-4 Components and Operation .......................................................................................... 5-4 Lubrication System.................................................................................................. 5-4 Electrical Generator ................................................................................................ 5-4 Air Intake and Exhaust........................................................................................................ 5-6 Description ....................................................................................................................5-6 Components and Operation .......................................................................................... 5-6 Air Intake ................................................................................................................. 5-6 Exhaust ................................................................................................................... 5-6 EGT Indications....................................................................................................... 5-6 APU Fuel Distribution System............................................................................................. 5-8 Description ....................................................................................................................5-8 Components and Operation .......................................................................................... 5-8 APU Fuel Pump ...................................................................................................... 5-8 APU Fuel Shutoff Valve .......................................................................................... 5-8 APU Negative-G Shutoff Valve ............................................................................... 5-9 APU Fuel Control Unit (FCU) .................................................................................. 5-9 Start and Ignition............................................................................................................... 5-11 Description .................................................................................................................. 5-11 Components and Operation ........................................................................................ 5-11 APU Battery .......................................................................................................... 5-11 Electronic Control Unit (ECU) ............................................................................... 5-11 APU Starter ........................................................................................................... 5-11 Ignition System...................................................................................................... 5-11 Operating Sequences ................................................................................................. 5-12 Start Sequence ..................................................................................................... 5-12 Shutdown Sequence ............................................................................................. 5-12 Protective Shutdowns ........................................................................................... 5-13

For Training Purposes Only

5-i

Sept 04


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