单元77(中英文对照版).docVIP

CHAPTER 77 Engine Indicating 77章 发动机指示 Text 1 INTRODUCTION 正文1 介绍 The engine indicating system continuously supplies engine data to the common display system (CDS). The engine indicating system has these subsystems:发动机指示系统连续将发动机数据传至通用显示系统(CDS).发动机指示系统具有以下子系统: -- Low pressure rotor tachometer (N1) 低压转子转速表(N1) -- High pressure rotor tachometer (N2) 高压转子转速表(N2) -- Exhaust gas temperature (EGT) 发动机排气温度(EGT) -- Airborne vibration monitoring (AVM). 机载振动监控(AVM) The CDS usually shows engine data on two display units (DUs). One DU shows the primary engine display and the other shows the secondary engine display. The primary engine display usually shows on the upper center DU. The secondary engine display usually shows on the lower center DU. Engine data can also show on the inboard DUs.CDS通常在两个显示组件(DU)上显示发动机数据..一个DU显示在主发动机显示上,另外一个在次发动机显示上.主发动机显示通常在上侧中央DU.次发动机显示通常在下侧中央DU.发动机数据也可以显示在内测DU上. Text 2 Related Components 正文2相关部件 The engine indicating system shows these parameters for each engine:发动机指示系统显示每个发动机的以下参数: -- Low pressure rotor speed (N1)低压转子转速(N1) -- High pressure rotor speed (N2)高压转子转速(N2) -- Exhaust gas temperature (EGT) 排气温度(EGT) -- Engine vibration. 发动机振动 Electronic Engine Control 发动机电子控制 The electronic engine control (EEC) receives an analog input from these engine sensors:发动机电子控制(EEC)从以下发动机传感器接收模拟输入: -- N1 speed sensor N1转速传感器 -- N2 speed sensor N2转速传感器 -- EGT probes (T49.5). EGT探头(T49.5) The EEC changes the analog signals to digital signals. The EEC sends the digital signals on an ARINC 429 data bus to the display electronics units (DEU)s.EEC将模拟信号转换为数字信号..EEC将信号从ARINC429数据汇流条至电子显示组件(DEU). Airborne Vibration Monitoring Signal Conditioner 机载振动监控信号调节器 The airborne vibration monitoring (AVM) signal conditioner calculates and monitors vibration levels of each engine.机载振动监控(AVM)信号调节器计算和监控每个发动机的振动水平. The AVM signal conditioner receives analog input from these engine sensors: AVM信号调节器从以下发动机传感器接收模拟输入: -- N1 speed sensor N1转速传感器 -- N2 speed sensor N2转速传感器 -- Number 1 be