哈工程轮机英语lesson1详解

marine diesel internal combustion ignite inject chamber principle operation charge fresh draw cylinder compression piston fine spray burn
海运的，船用的 柴油，柴油机 内部的 燃烧 点燃 喷射 腔，室 原理，原则 工作，操作，运转，进程 装，充；充填物 新鲜的，淡(水)的 抽吸 气缸 压缩 活塞 细小的，好的 喷雾，(水，油)雾 燃烧
Harbin Engineering University
Lesson one
How does a Marine Diesel engine Work?
Prof. Song Zhou
2007-11-1
Harbin Engineering University
New Words and Expressions in Text
效率低的，无效的
2007-11-1
Harbin Engineering University
advantage
优势，优点，长处
application
应用
propulsion
推进(装置)
cause
引起；原因
force
迫使
crankshaft
曲铀
propeller
螺旋桨，推进器
cycle
循环
consist (of)
2007-11-1
Harbin Engineering University
The burning of the fuel adds more heat to the air charge, causing it to expand and force the engine piston to do work on the crankshaft which in turn drives the ship’s propeller(螺旋桨).
2007-11-1
Harbin Engineering University
*The diesel engine is a type of internal combustion engine which ignites(点燃) the fuel by injecting(喷射) it into hot, high pressure air in a combustion chamber(燃烧室).
排出，耗尽；排气
combine (with) 结合，联合
inlet
进口，入口
scavenge
扫除；吹除
blow
吹，鼓风
residual
剩余的，残留的
value
价值，数值
injector
喷射器，喷油器
continue
继续(进行)
revolution
转
theoretically 理论上地
inefficient
2007-11-1
Harbin Engineering University
rotate
旋转，回转
medium
中ຫໍສະໝຸດ Baidu的，介质
alternator
交流发电机
in turn
依次，轮流变成
turn into
变成
event
事件，过程
stroke
冲程，行程
separate (from) 分离，分开
exhaust
2007-11-1
Harbin Engineering University
The marine diesel engine is a type of diesel engine used on ships. The principle of its operation is as follows:
由……组成
fix
固定
sequence
顺序，系列
bottom dead centre (BDC) 下止点
top dead centre (TDC) 上止点
on board ship 在船上
r/min
转／分
reduction gear box 减速齿轮箱
2007-11-1
Harbin Engineering University
Piston rod Crosshead
Two-stroke
Connecting rod
Engine
Cross scavenge system
Uniflow scavenge system
2007-11-1
Harbin Engineering University
The operation between two fuel injections is called a working cycle, which consists of a fixed sequence of events.
2007-11-1
Harbin Engineering University
Inlet valvFeuel injector Exhaust valve
Combustion chamber
Piston ring Piston
Piston pin
Cylinder
Connecting rod
crankshaft
Crank web
Four-stroke diesel engine
2007-11-1
Harbin Engineering University
Fuel injector
Fuel injector Exhaust valve
Exhaust port
扫气口 Scavenge port
Piston pin
2007-11-1
Harbin Engineering University
A charge of fresh air is drawn or pumped into the engine cylinder( 气 缸 ) and then compressed by the moving piston( 活 塞 ) to very high pressure.
2007-11-1
Harbin Engineering University
When the air is compressed, its temperature rises so that it ignites the fine spray(喷雾、 油雾) of fuel injected into the cylinder.