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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.
燃油從第一級(jí)發(fā)動(dòng)機(jī)驅(qū)動(dòng)燃油泵中通過燃油/滑油熱交換器到一個(gè)油
濾。當(dāng)油濾萬(wàn)一失效或堵塞時(shí)將被旁通。燃油泵的第二級(jí)提供高壓燃
油給主發(fā)動(dòng)機(jī)控制器。當(dāng)燃油離開燃油泵第二級(jí),流到另一個(gè)油濾，在
那里，一部份燃油在進(jìn)入主發(fā)動(dòng)機(jī)控制器前前轉(zhuǎn)到一個(gè)伺服燃油加熱
器。這個(gè)伺服燃油加熱器用發(fā)動(dòng)機(jī)滑油加熱伺服燃油以防止控制機(jī)械
內(nèi)部主發(fā)動(dòng)機(jī)控制器結(jié)冰。主發(fā)動(dòng)機(jī)控制器與電源管理控制器相連，
用動(dòng)力桿角度、風(fēng)扇入口壓力及溫度、N1 轉(zhuǎn)速和N2 轉(zhuǎn)速來(lái)測(cè)量燃燒
室燃油量。燃油流量傳感器從主發(fā)動(dòng)機(jī)控制器測(cè)量燃油流率并為燃油
流量指示器提供信號(hào)。
(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.
滑油系統(tǒng)通過發(fā)動(dòng)機(jī)驅(qū)動(dòng)的滑油泵增壓。滑油離開裝有滑油壓力傳感
器及“LOW OIL PRESSURE”開關(guān)的滑油泵，流向一個(gè)滑油油濾并
流到發(fā)動(dòng)機(jī)軸承及齒輪箱。滑油通過發(fā)動(dòng)機(jī)驅(qū)動(dòng)的回油泵回到滑油
箱。從回油泵返回的滑油流經(jīng)一個(gè)油濾，旁通活門用來(lái)防止油濾堵塞。
當(dāng)滑油回到回油泵時(shí)，通過一個(gè)傳感器來(lái)感受回油滑油溫度，然后，
滑油通過伺服燃油加熱器及燃油/滑油熱交換器，在這，滑油在回到
滑油箱之前被燃油冷卻。
LESSON 17 PPOWER PLANT （2）
一、單詞
起動(dòng)Start 點(diǎn)火Ignition 扭矩Torque
轉(zhuǎn)動(dòng)Rotate 加速Accelerate 慢車Idle
起動(dòng)器Starter 一套電路Circuitry 高壓壓氣機(jī)High pressure
compressor
外殼Case 位置Position 完成Accomplish
級(jí)Stage 空氣渦流發(fā)動(dòng)機(jī)Turbine-air
motor
把…轉(zhuǎn)換Convert into
能量Energy 足夠的Sufficient 地面源Ground source
交叉引氣Crossbleed 另一個(gè)Another 與…有關(guān)Related to
火花Spark 混合物Mixture 起飛Take off
著落Landing 有害的Adverse 天氣Weather
情況Condition 要求Require 點(diǎn)火Ignite
勵(lì)磁器Exciter 三維的triaxial 屏蔽Shield
引線lead 入口整流罩Inlet cowl 預(yù)冷器Percooler
限制Limit 溫度Temperature 總管道m(xù)anifold
相反revers 方向Director 套筒sleeve
遙控器Remote 展開Deploy 在…之前Prior to
展開Deployment 阻流門Blocker
door
排列Arrange
連接在…上Is attached to 螺栓Bolt 阻力連桿Drag link
裝置Fitting 移動(dòng)Translate 強(qiáng)迫Forcing
級(jí)聯(lián)的Cascade 部分、段Segment 形成Form
參數(shù)Parameter 儀表Instrument 發(fā)光二極管Light emitting
diode
百分比Percent 排氣溫度Exhaust gas
temperature
超出Exceed
紅線Redline 重量Weight 總的Total
消耗Consume 順序Sequence 復(fù)位Reset
振動(dòng)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.
發(fā)動(dòng)機(jī)起動(dòng)系統(tǒng)提供引氣、燃油、點(diǎn)火及扭矩，以使發(fā)動(dòng)機(jī)轉(zhuǎn)動(dòng)并加
速到慢車所需的轉(zhuǎn)速。系統(tǒng)包括起動(dòng)器、起動(dòng)活門、起動(dòng)引起活門、
增壓管道、控制及電源線路，起動(dòng)手柄及起動(dòng)選擇開關(guān)。起動(dòng)活門及
起動(dòng)器安裝于發(fā)動(dòng)機(jī)附件齒輪箱，起動(dòng)引氣活門安裝于高壓壓氣機(jī)左
側(cè)11 點(diǎn)鐘位置，起動(dòng)手柄、起動(dòng)選擇開關(guān)及起動(dòng)活門打開指示燈位
于駕駛艙。發(fā)動(dòng)機(jī)起動(dòng)過程通過發(fā)動(dòng)機(jī)增壓系統(tǒng)提供空氣經(jīng)過起動(dòng)活
門給起動(dòng)器來(lái)完成。
　
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