曝光台 注意防骗
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fuel/oil heat exchanger to a filter. Provisions are made to bypass the filter
in the event of failure or blockage. The second stage of the fuel pump
provides high pressure fuel to the main engine control(MEC). As the fuel
leaves the second stage fuel pump, it passes through another filter where a
portion of the fuel is ported to a servo fuel heater before entering the MEC.
The servo fuel heater uses engine oil to heat the servo fuel to prevent icing
of control mechanisms control(PMC) uses power lever angle, fan inlet
pressure and temperature, N1 rpm and N2 rpm to meter the correct
amount of fuel to the combustor. A fuel-flow transmitter measures the rate
of fuel flow from the MEC and provide a signal to the fuel flow indicator.
燃油从第一级发动机驱动燃油泵中通过燃油/滑油热交换器到一个油
滤。当油滤万一失效或堵塞时将被旁通。燃油泵的第二级提供高压燃
油给主发动机控制器。当燃油离开燃油泵第二级,流到另一个油滤，在
那里，一部份燃油在进入主发动机控制器前前转到一个伺服燃油加热
器。这个伺服燃油加热器用发动机滑油加热伺服燃油以防止控制机械
内部主发动机控制器结冰。主发动机控制器与电源管理控制器相连，
用动力杆角度、风扇入口压力及温度、N1 转速和N2 转速来测量燃烧
室燃油量。燃油流量传感器从主发动机控制器测量燃油流率并为燃油
流量指示器提供信号。
(7) The oil system is pressurized by the engine driven oil pump. The oil
leaves the oil pump, where sensors for oil pressure and the LOWOIL
PRESSURE switch are located, passes through an oil filter and continues
to the engine bearing and gearbox, the oil is returned to the oil tank by
means of engine driven scavenge pump. From the scavenge pumps the oil
passes through a scavenge filter. Bypass valve is mounted to prevent filter
from blocking. scavenge oil temperature is sensed as the oil returns to the
scavenge pump. The oil then passes through the servo fuel heater and
fuel/oil heat exchanger where it is cooled by fuel before returning to the
oil tank.
滑油系统通过发动机驱动的滑油泵增压。滑油离开装有滑油压力传感
器及“LOW OIL PRESSURE”开关的滑油泵，流向一个滑油油滤并
流到发动机轴承及齿轮箱。滑油通过发动机驱动的回油泵回到滑油
箱。从回油泵返回的滑油流经一个油滤，旁通活门用来防止油滤堵塞。
当滑油回到回油泵时，通过一个传感器来感受回油滑油温度，然后，
滑油通过伺服燃油加热器及燃油/滑油热交换器，在这，滑油在回到
滑油箱之前被燃油冷却。
LESSON 17 PPOWER PLANT （2）
一、单词
起动Start 点火Ignition 扭矩Torque
转动Rotate 加速Accelerate 慢车Idle
起动器Starter 一套电路Circuitry 高压压气机High pressure
compressor
外壳Case 位置Position 完成Accomplish
级Stage 空气涡流发动机Turbine-air
motor
把…转换Convert into
能量Energy 足够的Sufficient 地面源Ground source
交叉引气Crossbleed 另一个Another 与…有关Related to
火花Spark 混合物Mixture 起飞Take off
着落Landing 有害的Adverse 天气Weather
情况Condition 要求Require 点火Ignite
励磁器Exciter 三维的triaxial 屏蔽Shield
引线lead 入口整流罩Inlet cowl 预冷器Percooler
限制Limit 温度Temperature 总管道manifold
相反revers 方向Director 套筒sleeve
遥控器Remote 展开Deploy 在…之前Prior to
展开Deployment 阻流门Blocker
door
排列Arrange
连接在…上Is attached to 螺栓Bolt 阻力连杆Drag link
装置Fitting 移动Translate 强迫Forcing
级联的Cascade 部分、段Segment 形成Form
参数Parameter 仪表Instrument 发光二极管Light emitting
diode
百分比Percent 排气温度Exhaust gas
temperature
超出Exceed
红线Redline 重量Weight 总的Total
消耗Consume 顺序Sequence 复位Reset
振动Vibration 最大的maximum
二、TEXT
(1) the engine starting system provides air, fuel, ignition and torque for
rotating the engine to an rpm at which the engine can accelerate to idle
rpm. The system consists of the starters, start valves, start bleed valves,
pneumatic ducting, control and power circuitry, start levers and start
selector switches. The start valve and starter are located on the forward
side of the engine accessory gearbox, the start bleed valve is located on the
left side of the HPC case at the 11 o’clock position, the start levers, start
selector switches and start valve open light are in the flight compartment.
Engine starting is accomplished by supplying air from the pneumatic
system through the start valve to the starter.
发动机起动系统提供引气、燃油、点火及扭矩，以使发动机转动并加
速到慢车所需的转速。系统包括起动器、起动活门、起动引起活门、
增压管道、控制及电源线路，起动手柄及起动选择开关。起动活门及
起动器安装于发动机附件齿轮箱，起动引气活门安装于高压压气机左
侧11 点钟位置，起动手柄、起动选择开关及起动活门打开指示灯位
于驾驶舱。发动机起动过程通过发动机增压系统提供空气经过起动活
门给起动器来完成。
中国航空网 www.aero.cn
航空翻译 www.aviation.cn
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航空工程英语基础（中英文对照）(95)
