OFDM调制器及其FPGA的实现-毕业设计论文终稿.doc

Lesson 2 bustion Engine (Part Ⅰ)
交通运输专业英语
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基本要求:
 通过本章的学****使学生掌握内燃机的结构和工作原理相关专业英语词汇及表述方法,使学生能流利阅读准确翻译相关语句,并掌握常用英汉互译技巧。重点难点: 流利阅读相关文献,准确翻译短句。
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New Words & Expressions:
Self-contained 独立的
compress
piston
crankshaft crank
carburetor
connecting rod 连杆 rod ,棒
rocker rock ,摇动;,摆动
rocker arm 摇臂
pushrod
distributor ,配电器 distribute v.
camshaft cam n.
valve lifter 阀门挺杆 valve
oil filter 机油滤清器 filter n.;v.
oil pump 机油泵
top dead centre 上止点
bottom dead centre 下止点
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manifold n.[化]歧管,支管,导管
,多种;;,增多 eg. manifold effect
inlet ,入口
inlet valve
induction ,诱导,感应,进气
exhaust v.;;排气(口),废气
exhaust valve 排气阀
stagger
bore v. bore a hole
venturi n .缩喉管
jet
throttle
depression ,下降,衰减
pivot ,支点 vi,在枢轴上传动;
tilt ,翻转
principle:原则,原理;准则,道义 principal:主要的,首要的
vacuum:真空,真空度 revolution:革命,循环,周期
sectional:截面的,剖面的;部分的,局部的
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1 Principle of Operation
The engine is a self-contained power unit which converts the heat energy of fuel into mechanical energy for moving the vehicle.
发动机是一个独立的动力装置,它把燃料燃烧产生的热能转变成机械能,从而推动车辆运行。
Because fuel is burned within, the engine is known as an bustion (IC) engine. In the IC engine, an air-fuel mixture is introduced into a closed cylinder where it pressed and then ignited.
introduce:介绍,引荐;引进;输入,传入
由于燃料在发动机气缸内燃烧,因此发动机被称为内部燃烧发动机。在内燃机中,空气和燃油的混合物被引入一个封闭的气缸,在气缸内空气和燃油的混合物先被压缩,然后被点燃。
The burning of the fuel (combustion) causes a rapid rise in cylinder pressure which is converted to useful mechanical energy by the piston and crank-shaft.
燃烧引起气缸内压力迅速上升,而这快速上升的压力,通过活塞和曲轴转化成非常有用的机械能。
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The fuel may be ignited either by a spark or pression givin