汽车实用英语电子教案10-11单元(DOC)

汽车实用英语电子教案10-11单
元(DOC)

郑州交通职业学院

教 案


2012-2013学年 第二学期






专业： 11级汽车制造与装配
课程： 汽车实用英语
教师： 陈晓静



2

教材分析
1.教材基本信息
教材名称：汽车实用英语
出版社：中国传媒大学出版社
主 编：潘天堂
出版时间：2009年10月第1版
2.章节内容及学时分配
Unit 1 Automobile Hilstory
Unit 2 History of Fuel Injection
System
Unit 3 Benz Outlined
Unit 4 Toyota Profile
Unit 5 Automobile Mass
Production Process
Unit 6 Automobile Engines
Unit 7 The Valve System
Unit 8 Cooling System
Unit 9 Fuel System
Unit 10 Typical EFI System
Unit 11 Car Suspension
Unit 12 Car Steering System
3

Unit 13 Four-wheel Drive
3.教学手段和方法
传统教学法、多媒体课件教学法、实物
演示法相结合等。
4.教材分析
本教材题材 广泛、内容丰富。大多同
类教材内容过于偏重汽车机械结构，本书
内容涉及汽车历史、服务等各 方面，使学
生通过本书的学习掌握汽车各专业方面的
英文表达方式，为以后的就业和择业拓宽< br>知识面。强调实用性和可操作性。文章内
容选取难易适中，表达方式多样。既有专
业文章 的写作方法，也有新闻报道型的通
俗写法，更有较口语化的表达方式。每单
元后设有简答题，给 教师的课堂教学和学
生的思考留下更大空间，体现了应用型人
才的培养目标和人才定位。内容突 出前沿
性和先进性。本书紧扣时代脉搏，介绍了
现代汽车新技术的应用，为学生后续职业
生涯的发展奠定基础。
5.参考教材
宋红英 主编《汽车专业英语》 北京：
4

机械工业出版社
黄立新 主编《汽车专业英语》 西安：
西安电子科技大学出版社
黄汽驰，黄新 《新编汽车专业英语》
北京：机械工业出版社
赵修强 主编《汽车专业英语》 济南：
山东科学技术出版社
蔡安徽，崔永春 主编《汽车专业英语》
北京 北京理工大学出版社

5

第1讲 Unit 1 Automobile History
课前分析：
1.教学内容及时间分配
New words and phrases
1学时
Development of the
automobile 1学时
2.教学目的
通过对文章的翻译、学习、和讲解，掌
握第一单元的汽车发展史的英文知识， 能
够牢记该单元的汽车相关英语单词，并且
能够拥有翻译Development of the
automobile部分文章的英语基础和理解能
力。
3.教学重难点
重点：Development of the
automobile.
4.教学方法
本教学环节采用理论教学方法。通过
举例、多媒体演示面，学生可以更直观的
学习。
5.板书布置
6

详见教学内容
教学内容：
0.导入
通过对以往学习的汽车专业知识的回
顾，引出专业英语这门课，并对这门课 程
进行整体分析和讲解。
1. New words and phrases
汽车 automobile
拖拉机 tractor
铁路机车 locomotive
有轨电车 tram
无轨电车 trolley
军用车辆 military vehicle
蒸汽机 steam engine
煤气机 gas engine
汽油机 gasoline engine
国民经济 national economy
国内生产总值 (GDP) Gross
Domestic Production
全拆散 (CKD) Completely Knock
Down
半拆散 (SKD) Semi-Knock Down
7

改革开放 reform and opening
技术引进 technical import
国产化 localization
支柱产业 pillar estate
2. Development of the
automobile
The engine which is called the
of a vehicle is used to supply
power for an automobile. It includes the
fuel, lubricating, cooling, ignition and
starting systems. Generally, an automobile
is operated by internal combustion engine.
The internal combustion engine burns fuel
within the cylinders and converts the
expanding force of the combustion or
into rotary force used to
propel the vehicle
3. gasoline engine
The chassis is a framework used to
assemble auto components on it. The
chassis itself is divided into four systems
like transmission system, suspension system,
8

steering system and brake system.
4.作业及小结：翻译The American
auto industry was ill—prepared for the
market shift in consumer preference from
large cars to smaller ，more fuel—efficient
alternatives，and for the first quarter of
1974，Detroit’s sales slipped drastically.
9

第2讲 Unit 1 Automobile History
课前分析：
1.教学内容及时间分配
The post-word war2 industry
1学时
Notes
1学时
2.教学目的
通过对文章的翻译、学习、和讲解，
掌握第一单元的 汽车发展史的英文知识，
能够牢记该单元的汽车相关英语单词，并
且能够拥有翻译The post-word war2
industry部分文章的英语基础和理解能
力。
3.教学重难点
重点：The post-word war2 industry.
4.教学方法
本教学环节采用理论教学方法。通过
举例、多媒体演示面，学生可以更直观的
学习。
5.板书布置
详见教学内容
10

教学内容：
0.导入
通过对以往学习的汽车专业英语知识
的回顾，并对学生英语单词进行检查， 通
过对上次课程回顾，引入本次课程。
post-word war2 industry
The transmission system applies to the
components needed to transfer the drive
from the engine to the road wheels. The
main components are clutch, gearbox, drive
shaft, final drive and
Materials
2. transfer
The primary purpose of the
suspension system is to increase strength
and durability of components and to meet
customers' requirements for riding
comfort and driving safety. In automobile
suspension, the major component is
springs. The springs used on today's
vehicles are engineered in a wide variety of
types, sizes, rates and capacities. Spring
11

types include leaf springs, coil springs and
torsion bars. Springs are paired off on
vehicles in various combinations, and are
attached to vehicle by different mounting
techniques.
3. Notes
The function of the steering system
is to provide the driver with a means for
controlling the direction of the vehicle as it
moves. The steering system consists of
steering wheel, steering shaft, worm, gear
sector, pitman arm, drag link, steering
knuckle arm, king pin, steering arms, tie
rod, front axle and steering knuckle. They
enable the car to change the direction by
means of turning and moving forth and
back.
The transmission system applies to the
components needed to transfer the drive
from the engine to the road wheels. The
main components are clutch, gearbox, drive
shaft, final drive and differential.
12

4.作业及小结
Tell us how the idea of mass
production was created.


第3讲 Unit 5 Automobile Mass
Production Process
课前分析：
1.教学内容及时间分配
New words and phrases
1学时
Development of the
automobile 1学时
2.教学目的
通过对文章的翻译、学习、和讲解，
掌握第五单元的汽车大批量生产的 英文知
识，能够牢记该单元的汽车相关英语单词，
并且能够拥有翻译Development of the
automobile部分文章的英语基础和理解能
力。
3.教学重难点
重点：Development of the
13

automobile
4.教学方法
本教学环节采用理论教学方法。通过
举例、多媒体演示面，学生可以更直观的
学习。
5.板书布置
详见教学内容
教学内容：
0.导入
通过结合日 常生活中的实例以及汽车
的历史，引出汽车大批量的生产过程，从
而引入正文，介绍汽车大批量 生产的发展
史。
1. New words and phrases
first gear 一
second gear 二档
reverse 倒车
two-stroke engine 二冲程发动机
front wheel 前
rear wheel 后轮
tread 轮
chassis 底盘
14
档
档
轮
距

bodywork, body 车身
rear window 后窗玻璃
windscreen 挡风玻璃 (美
作:windshield)
windscreen wiper风档刮水器,风档雨
雪刷 (美作:windshield wiper)
fender, wing, mudguard 挡泥板
radiator grille 水箱
wing mirror 后视镜
bonnet 发动机盖 (美作:hood)
boot 行李箱 (美作:trunk)
roof rack, luggage rack 行李架
license plate, number plate 车号
wing 前翼子板
hubcap 轮毂罩
bumper 保险杠
2. Background
In 1908 Ford began its production of
the model T automobile .
3. Raw Materials
4.

Design
The cylinder block of liquid-cooled
15

engines forms the basic framework of the
engine. Other parts are attached to the
cylinder block or are assembled in it. The
block is cast in one piece from gray iron or
iron alloyed with other metals, such as
nickel or chromium. Some blocks are cast
from aluminum.
5.作业及小结
Tell us how the idea of mass
production was created.
16

第4讲 Unit 5 Automobile Mass
Production Process
课前分析：
1.教学内容及时间分配
The manufacturing process

1学时
Notes
1学时

2.教学目的
通过对文章的翻译、学习、和讲解，
掌握第五单元的汽车大批量生 产的英文知
识，能够牢记该单元的汽车相关英语单词，
并且能够拥有翻译整篇文章的英语基础和
理解能力。
3.教学重难点
重点：The manufacturing process.
4.教学方法
本教学环节采用理论教学方法。通过
举例、多媒体演示面，学生可以更直观的
学习。
5.板书布置
详见教学内容
17

教学内容：
0.导入
通过对以往学习的汽车专业英语知识
的回顾，并对学生英语单词进行检查， 通
过对上次课程回顾，引入本次课程。
1. The manufacturing process
The cylinder block of liquid-cooled
engines forms the basic framework of the
engine. Other parts are attached to the
cylinder block or are assembled in it. The
block is cast in one piece from gray iron or
iron alloyed with other metals, such as
nickel or chromium. Some blocks are cast
from aluminum. The block contains not
only the cylinders but also the water
jackets that surround them. In aluminum
blocks, cast iron or steel cylinder
sleeves( also called bore liners) are used.
These metals have better wearing qualities
than aluminum and can better withstand
the wearing effect of the pistons and rings
moving up and down in the cylinders. For
18

most engines
2. Quality control
The cylinder block of liquid- cooled
engines forms the basic framework of the
engine. Other parts are attached to the
cylinder block or are assembled in it. The
block is cast in one piece from gray iron or
iron alloyed with other metals, such as
nickel or chromium. Some blocks are cast
from aluminum. The block contains not
only the cylinders but also the water
jackets that surround them. In aluminum
blocks, cast iron or steel cylinder
sleeves( also called bore liners) are used.
3. Notes
The electric system supplies lighting
and driving power for the automobile. It
cranks me engine for starting. It supplies
the high-voltage surges that ignite the
compressed air-fuel mixture in the
combustion chambers. The electric system
includes the battery, generator, starting
19

system, ignition system, lighting system,
horn system, radio and other devices.
4.作业及小结
Tell us how the development process
of mass production in brife， please
20

第5讲 Unit 6 Automobile Engine
课前分析：
1.教学内容及时间分配
New words and phrases
1学时
Engine types
1学时
2.教学目的
通过对文章的翻译、学习、和讲解，掌
握第六单元的汽车发动机的英文知识，能
够牢记该单元的 汽车相关英语单词，并且
能够拥有翻译Engine types部分文章的英
语基础和理解能力。
3.教学重难点
重点：Engine types.
4.教学方法
本教学环节采用理论教学方法。通过
举例、多媒体演示面，学生可以更直观的
学习。
5.板书布置
详见教学内容
教学内容：
21

0.导入
通过对以往学习的汽车专业英语知识
的回顾，引出专业英语这门课，并对第 六
单元Engine types部分课程进行整体分析
和讲解。
1. New words and phrases
steering wheel, wheel 方向盘
rear-view mirror, driving mirror
后视镜
horn, hooter 喇叭
choke 熄火装置
gear stick, gear change 变速杆
(美作:gearshift)
gearbox 变速箱
starter, self-starter 起动器,起动
钮
brake pedal 刹车踏板
clutch pedal 离合器踏板
hand brake 手制动器
foot brake 脚制动器
dashboard 仪表板
milometer 里程表
22

2. Engine types
The internal combustion engine, as its
name indicates, burns fuel within the
cylinders and converts the expanding force
of the combustion into rotary force used to
propel the vehicle. The actions taking place
in the engine cylinder can be classified into
four stages, or strokes. refers to
piston movement; a stroke occurs when the
piston moves from one limiting position to
the other. The upper limit of piston
movement is called TDC (top dead
center) .The lower limit of piston
movement is called BDC (bottom dead
center). A stroke is piston movement from
TDC to BDC or from BDC to TDC. In
other words, the piston completes a stroke
each time it changes its direction of motion.
3.作业及小结：翻译
There are various types of engines
such as electric motors, steam engines and
internal combustion engines. But, the
23

internal combustion engine seems to be the
one most commonly used in the automotive
field. According to the fuel energy used,
internal combustion engines are further
divided into gasoline engines, kerosene
engines, diesel engines, etc.
24

第6讲 Unit 6 Automobile Engine
课前分析：
1.教学内容及时间分配
How an engine works
1学时
Notes
1学时
2.教学目的
通过对文章的翻译、学习、和讲解，
掌握第六单元的 汽车发动机的英文知识，
能够牢记该单元的汽车相关英语单词，并
且能够拥有翻译How an engine works and
engine baalance等部分文章的英语基础和
理解能力。
3.教学重难点
重点：How an engine works
4.教学方法
本教学环节采用理论教学方法。通过
举例、多媒体演示面，学生可以更直观的
学习。
5.板书布置
详见教学内容
25

教学内容：
0.导入
通过对以往学习的汽车专业英语知识
的回顾，并对学生英语单词进行检查， 通
过对上次课程回顾，引入本次课程。
1.

How an engine works

Where the entire cycle of events in the
cylinder requires four strokes (or two
crankshaft revolutions), the engine is
called a four-stroke-cycle engine. The
four-stroke-cycle engine is also called the
Otto cycle engine, in honor of the German
engineer, Dr. Nikolaus Otto , who first
applied the principle in 1876. The four
piston strokes are intake, compression,
power and exhaust.
Intake stroke. On the intake stroke, the
intake valve has opened, the piston is
moving
downward, and a mixture of air and
vaporized gasoline is entering the cylinder
through the valve port. The mixture of air
26

and vaporized gasoline is delivered to the
cylinder by the fuel system and carburetor.
Compression stroke. After the piston
reaches BDC, or the lower limit of its
travel, it begins to move upward. As this
happens, the intake valve closes. The
exhaust valve is also closed, so that the
cylinder is sealed. As the piston moves
upward (pushed now by the revolving
crankshaft and connecting rod), the
air- fuel mixture is compressed. By the
time the piston reaches TDC, the mixture
has been compressed to as little as
one-tenth of its original volume, or even
less. When the air- fuel mixture is
compressed, not only does the pressure in
the cylinder to up, but the temperature of
the mixture also increases.
Power stroke. As the piston reaches
TDC on the compression stroke, an
electric spark is produced at the spark
plug. The ignition system delivers a
27

high- voltage surge of electricity to the
spark plug to produce the spark. The
spark ignites the air-fuel mixture. It now
begins to bum very rapidly, and the
cylinder pressure increases to as much as
3~5MPa or even more. This terrific push
against the piston forces it downward, and
a power impulse is transmitted through the
connecting rod to the crankpin on the
crankshaft. The crankshaft is rotated as the
piston is pushed down by the pressure
above it.
Exhaust stroke. As the piston reaches
BDC again, the exhaust valve opens. Now,
as the piston moves up on the exhaust
stroke, it forces the burned gases out of the
cylinder through the exhaust-valve port.
Then, when the piston reaches TDC, the
exhaust valve closes and the intake valve
opens. Now, a fresh charge of air-fuel
mixture will be drawn in to the cylinder as
the piston moves down again toward BDC.
28

This four stroke cycle of piston within
the cylinder is repeated time and again to
put the vehicle forward.
2. Notes
The internal combustion engine, as its
name indicates, burns fuel within the
cylinders and converts the expanding force
of the combustion into rotary force used to
propel the vehicle. The actions taking
place in the engine cylinder can be
classified into four stages, or strokes.
refers to piston movement; a
stroke occurs when the piston moves from
one limiting position to the other. The
upper limit of piston movement is called
TDC (top dead center) .The lower limit of
piston movement is called BDC (bottom
dead center). A stroke is piston movement
from TDC to BDC or from BDC to TDC.
In other words, the piston completes a
stroke each time it changes its direction of
motion.
29

6.作业及小结
What dose the “DOHC 24 Valve V6”
mean?
第7讲Unit 7 The Valve System
课前分析：
1.教学内容及时间分配
New words and phrases
1学时
Valve Operation
1学时
2.教学目的
通过对文章的翻译、学习、和讲解，
掌握第七单元的 汽车配气机构的英文知
识，能够牢记该单元的汽车相关英语单词，
并且能够拥有翻译Valve Operation and
Overhead camshaft valve train部分文章
的英语基础和理解能力。
3.教学重难点
重点：Valve Operation
4.教学方法
本教学环节采用理论教学方法。通过
举例、多媒体演示面，学生可以更直观的
30

学习。
5.板书布置
详见教学内容
教学内容：
0.导入
通过结合日常生活中的实例以及发动
机的整个构造， 引出汽车配气机构的作用
和用途，从而引入正文，介绍汽车配气机
构。
words and phrases
Cam set assembly凸轮总成
Camshaft凸轮轴
Camshaft sensor凸轮轴位置感知器
Camshaft sprocket凸轮轴正时炼轮
Camshaft timing gear凸轮轴正时齿轮
Cap clamp set分电盘盖弹簧夹组
Carbon point碳棒
Carburetor化油器
Caster后倾
Catalytic converters触媒转换器
Centrifugal advance mechanism离心点火
提前机构
31

Chassis底盘
Check valve止回阀
Circuit电路，油路
Clamp束环
Clearence间隙
Clearence volume余隙容积
2. Valve Operation
The valve gear of an internal combustion
engine provides timely admission of the
fresh charge into the cylinders and exhaust
of spent gases from them. For this purpose
the valves at definite moments open and
close the intake and exhaust ports in the
cylinder head, through which the cylinders
communicate with the intake and exhaust
manifold.
3. Overhead camshaft valve train
4.

valve clearance
The timing gears in most engines are
housed in a special case fitted at the front
end of the engine. These are necessary to
transmit rotation from the crankshaft to
32

the camshaft, fuel injection pump shaft,
and to oil pump and other
gears are made of steel
and use helical teeth to reduce noise.
5.作业及小结
How does a push rod valve
work？
33
train

第8讲 Unit 7 The Valve System
课前分析：
1.教学内容及时间分配
Cam design and control
dynamic

1学时
Notes
1学时

2.教学目的
通过对文章的翻译、学习、和讲解，
掌 握第七单元的汽车发动机配气机构的英
文知识，能够牢记该单元的汽车相关英语
单词，并且能够 拥有翻译Cam design and
control dynamic等部分文章的英语基础和
理解能力。
3.教学重难点
重点：Cam design and control
dynamic.
4.教学方法
本教学环节采用理论教学方法。通过
举例、多媒体演示面，学生可以更直观的
学习。
5.板书布置
34

详见教学内容
教学内容：
0.导入
通过对以往学习的汽车专业英语知识
的回顾，并对学生英语单词进行检查， 通
过对上次课程回顾，引入本次课程。
1. valve timing
The tappets serve to transmit the force
from the camshaft to the push rods. The
tappets are small cylindrical bores
receiving the push rods. They are made of
cast iron or steel and located in the guides,
which may be made integral with the
cylinder block or removable as in the
engine. When the engines operate, the
tappets continuously rotate about their
axes for uniform wear. The rotation is
ensured by a convex surface of their
bottoms and a slanted surface of the cams.
2. cam design and control dynamic
3. camshaft drive mechanism
3.1 belt drive
35

3.2 chain drive
3.3 gear drive
icvalve control system

The push rods transmits the force from
the tappets to the rocker and are made as
steel stems with hardened tips or
duralumin tubes with spherical steel tips
press-fitted at. both ends. The push rod
tips bear against the tappet hollow at one
end against the spherical surface of rocker
adjusting screw at other.
4.作业及小结
What is the meaning of “Valve
Timing”？




第9讲Unit 8

Cooling System
课前分析：
1.教学内容及时间分配
36

New words and phrases
1学时
Circulation
1学时
2.教学目的
通过对文章的翻译、学习、和讲解，
掌握第八单元的 汽车冷却系统的英文知
识，能够牢记该单元的汽车相关英语单词，
并且能够拥有翻译Circu lation部分文章的
英语基础和理解能力。
3.教学重难点
重点：Circulation
4.教学方法
本教学环节采用理论教学方法。通过
举例、多媒体演示面，学生可以更直观的
学习。
5.板书布置
详见教学内容
教学内容：
0.导入
通过结合日常生活中的实例以及发动
机的整个构造，引出汽车冷却系统的作用
37

和用途，从而引入正文，介绍汽车配气机
构。
words and phrases
automatic chock cover setting 自动
阻风门盖调到
automotive electric system 汽车电
系
automotive engine system 引擎系
统
automatic transmission 自动变速
器，自动排挡变速箱
Auxiliary Brake 辅助制动器
Auxiliary Direction Indicator
Lamps 辅助转向信号灯
Brake Systems for Tractors and
Trailers 牵引车及挂车的制动装置
Brake tester 制动器试验台
brake valve 制动阀
brake warning lamp 制动报警灯
brake warning switch 制动报警开
关
braking force control system 制动控
38

制装置
2. Circulation
the coolant transfers heat to
the airflow through the radiator.
ature control and heat
transfer are based on the pressure
of the system and coolant
circulation.
res are highest at the water
pump outlet and in the water jackets near
the combustion pressure
is lowest at the water pump inlet. Pressure
is generated by the water pump and
controlled by variable restrictions, like the
thermostat, the heater control valve and
valves in the radiator cap.
6作业及小结
What are the two types of cooling
systems founded on motor vehicles
39

第10讲 Unit 8

Cooling System
课前分析：
1.教学内容及时间分配
Antifreeze

1学时
Notes
1学时

2.教学目的
通过对文章的翻译、学习、和讲解，
掌握第八单元的汽车冷却系统 相关的英文
知识，能够牢记该单元的汽车相关英语单
词，并且能够拥有翻译Antifreez e等部分
文章的英语基础和理解能力。
3.教学重难点
重点：Antifreeze.
4.教学方法
本教学环节采用理论教学方法。通过
举例、多媒体演示面，学生可以更直观的
学习。
5.板书布置
详见教学内容
教学内容：
0.导入
40

通过对以往学习的汽车专业英语知识
的回顾，并对学生英语单词进行 检查，通
过对上次课程回顾，引入本次课程。
1. Antifreeze
The purpose of the cooling system is
to keep the engine at its most efficient
operating temperature at all speeds under
all driving conditions. As fuel is burned in
the engine, about one-third of the heat
energy in the fuel is converted into power.
Another third goes out through the
exhaust pipe unused, and the remaining
third must be handled by the cooling
system. This means that the engine can
work effectively only when the heat energy
is equally handled so as to keep the engine
temperature in balance
There are generally two different
types of cooling system: water-cooling
system and air-cooling system.
Water-cooling system is common. The
cooling medium, or coolant, in them is
41

either water or some low-freezing liquid,
called antifreeze. A water-cooling system
consists of the engine water jacket,
thermostat, water pump, radiator, radiator
cap, fan, fan drive belt and necessary
hoses.

The radiator is a device designed to
dissipate the heat which the coolant has
absorb from the engine; it is constructed to
hold a large amount of water in tubes or
other passages which provide a large area
in contact with the atmosphere.
The radiator usually mainly consists of
the radiator core, radiator bottom tank,
and radiator top tank. Radiator cores are
of two basic types, the fin and tube type
(fins are placed around the tube to increase
the area for radiating the heat) and of the
ribbon cellular or honey comb type.
3.作业及小结：
翻译：
42

The radiator cap serves not only to
prevent the coolant from splashing out the
filler opening, but also to prevent
evaporation of the coolant.
第11讲Unit 9 Fuel System
课前分析：
1.教学内容及时间分配
New words and phrases
1学时
Gasoline
1学时
2.教学目的
通过对文章的翻译、学习、和讲解，
掌握第九单元的汽车燃油供给系统 的英文
知识，能够牢记该单元的汽车相关英语单
词，并且能够拥有翻译Gasoline部分文 章
的英语基础和理解能力。
3.教学重难点
重点：Gasoline
4.教学方法
本教学环节采用理论教学方法。通过
举例、多媒体演示面，学生可以更直观的
43

学习。
5.板书布置
详见教学内容
教学内容：
0.导入
通过结合日常生活中的实例以及发动
机的整个构造， 引出汽车燃油供给系统的
作用和用途，从而引入正文，介绍汽车燃
油供给系统相关知识。
words and phrases
Fuel filter 汽油滤清器
Fuel metering system 燃油计量系统
Fuel pump 汽油泵
Fuel pump gasket 汽油泵垫片
Fuel rail 汽油分供管
Fuel-system 燃油系统
Fuel supply system 燃油供给系
统 Fuel tank 油箱
Fuel- tank cap 油箱盖
Electronic fan 电动风扇
Electronic ignition system 电子点
火系统
ne is a complex blend of
44

carbon and hydrogen compounds.
Additives are then added to improve
performance. All gasoline is basically the
same, but no two blends are identical. The
two most important features of gasoline
are volatility and resistance to knock
(octane). Volatility is a measurement of
how easily the fuel vaporizes. If the
gasoline does not vaporize completely, it
will not burn properly (liquid fuel will not
burn)
fuel, like gasoline is a
complex blend of carbon and hydrogen
compounds. It too requires additives for
maximum performance. There are two
grades of diesel fuel used in automobiles
today: 1-D and 2-D.
location and design are always
a compromise with available space. Most
automobiles have a single tank located in
the rear of the vehicle. Fuel tanks today
have internal baffles to prevent the fuel
45

from sloshing back and forth.
5 Steel lines and flexible hoses carry
the fuel from the tank to the engine. When
servicing or replacing the steel lines,
copper or aluminum must never be used.
Steel lines must be replaced with steel.
6.作业及小结
what isThe function of the fuel
system
？

46

第12讲 Unit 9 Fuel System
课前分析：
1.教学内容及时间分配
Fuel Pump

1学
时
Notes
1学时

2.教学目的
通过对文章的翻译、学习、和讲解，
掌握第九单元的汽车燃油供给 系统系统相
关的英文知识，能够牢记该单元的汽车相
关英语单词，并且能够拥有翻译Fuel
Pump等部分文章的英语基础和理解能力。
3.教学重难点
重点：Fuel Pump
4.教学方法
本教学环节采用理论教学方法。通过
举例、多媒体演示面，学生可以更直观的
学习。
5.板书布置
详见教学内容
教学内容：
47

0.导入
通过对以往学习的汽车专业英语知识
的回顾，并对学生英语单词进行检查， 通
过对上次课程回顾，引入本次课程。
Fuel System
The fuel system is critical to operation.
The system consists of the fuel tank, lines,
pump, filter, carburetor, and injectors .
Flow
The fuel in the fuel tank is ready to be
used when the engine needs it. The fuel
pump draw fuel from the tank and sends it
to the carburetor. The carburetor is to
keep the fuel at the right air-fuel ratio. For
a electric fuel-injected engine, the fuel is
pressurized and sent to the fuel feed pipe,
through a fuel filter, and into the fuel
injectors.
Tank
The fuel tank is used to store the fuel of
engine needed. It is usually located in rear
of the vehicle. The fuel tank is designed to
48

fit around frame and to be protected from
impacts. These are several baffles insides
the fuel tank to restrict fuel movement
during rapid starts and stops, cornering,
and so on. The fuel cap on the fuel tank is
used to keep the fuel from splashing out,
release the vacuum created by the fuel
removing, and prevent vapors from
escaping directly into the atmosphere.

The mechanical fuel pump is used on
many vehicles with carburetors and
driven by the camshaft. There is a cam or
an eccentric lobe on the camshaft. As the
camshaft turns, the lobe lifts a lever up and
down, causing a pumping action. Fuel is
drawn from the tank by a vacuum and sent
to the carburetor.
5.作业及小结：
翻译：Steel lines and flexible hoses carry
the fuel from the tank to the engine.
When servicing or replacing the steel
49

lines, copper or aluminum must never
be used. Steel lines must be replaced
with steel.
50