Unit汽车专业英语(发动机)资料

push rod
■ Valve gear tappet ■ Connecting rod
timing gears
connecting rod piston crankshaft flywheel
Engine cooling system
Engine lubricating system
Fuel supply system
Compression 压缩
Power 做功
Exhaust 排放
Stroke . /strəuk / n. 打击；中风；笔画；冲程；尝试；轻抚
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四、发动机的布置形式
发动机前置 前轮驱动
发动机前置 后轮驱动
发动机后置 后轮驱动
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课堂小结
需要记住的单词： Engine
发动机
Chassis
底盘
冷却系 cooling system
润滑系 lubrication system
[ˌlu:brɪ'keɪʃn]
润滑，加油; 油润;
起动系 starting system
点火系 Ignition system
[ɪgˈnɪʃn]
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燃油供给系 fuel supply system 进气系统 intake system 排气系统 exhaust system
• II. Text Explanation
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.

Two. The Exhaust System
The exhaust system carries exhaust gases
from the engine’s combustion chamber to the atmosphere and reduces engine noise. Exhaust gases leave in a pipe, start from the exhaust manifold, traveling through a catalytic converter and a muffler before exiting through the tail pipe. The basis of the problem gases are：hydrocarbons （unburned）, carbon monoxide, nitrogen oxides, sulfur dioxide.
（1）The Fuel Delivery System The fuel delivery system consists of fuel tank, fuel pump, fuel filter, fuel delivery pipe, injector, fuel pressure regulator and fuel return pipe （Fig.5-2）.
（2） Warm up： The warm up phase
follows the cold start. The engine needs extra fuel, because some of the fuel still condenses on the cold cylinder walls.
The fuel injection systems used in automobiles are port fuel injection and Throttle Body Injection （TBI）. Port fuel injection is called Multiple Point Injection（MPI）. Throttle body injection is also called Single Point Injection （SPI）.

Single-cylinder engine
cylinder piston Intake valve Exhaust valve Piston pin
Connecting rod
Timing gear
crankshaft Oil pipe
Oil pump
I. Pre-questions
what is the power source of automobile and how to produce? Engine
译文：内燃机，顾名思义，就是燃料在气缸内部 燃烧，并且把燃烧时的膨胀力转化为驱动车辆的 旋转力。
II. Text Explanation
Convert…..into…. ①转变；变换 That building has been converted into a school. 那座楼房改成学校了。 ②兑换 I want to convert some Hong Kong dollars into American dollars. 我想把一些港元换成美元。 ③改变信仰、党派或意见等 She managed to convert him to her opinion. 她终于设法说服了他接受她的意见。
crankshaft
I. Pre-questions
The engine comprises two mechanism and five systems, what are they ?
crankshaft and connecting rod mechanism（曲轴连 杆装置）, valve gear (阀动装置）, cooling system, lubricating system, fuel system, starting system, ignition system

burns fuel within the cylinders and converts the expanding force of the combustion into rotary force used to propel the vehicle.
Single-cylinder engine
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•需要记住的句子
There are four basic components of the automobile : engine , chassis , body and electrical system .
译：汽车有四个基本组成部分，发动机， 底盘，车身和电气系统。
Engine system includes ： ignition system，lubrication system, cooling system, starting system.
push rod
■ Valve gear tappet ■ Connecting rod
timing gears
connecting rod piston crankshaft flywheel
Engine cooling system
Engine lubricating system
Fuel supply system
冷却系 cooling system
润滑系 lubrication system
[ˌlu:brɪ'keɪʃn]
润滑，加油; 油润;
起动系 starting system
点火系 Ignition system
[ɪgˈnɪʃn]
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燃油供给系 fuel supply system 进气系统 intake system 排气系统 exhaust system

译文：内燃机，顾名思义，就是燃料在气缸内部 燃烧，并且把燃烧时的膨胀力转化为驱动车辆的 旋转力。
II. Text Explanation
Convert…..into…. ①转变；变换 That building has been converted into a school. 那座楼房改成学校了。 ②兑换 I want to convert some Hong Kong dollars into American dollars. 我想把一些港元换成美元。 ③改变信仰、党派或意见等 She managed to convert him to her opinion. 她终于设法说服了他接受她的意见。
Fuel supply system
Valve gear
III. Exercises
•Translate the following expressions into Chinese. 活塞 piston 曲轴 crankshaft 分电器 distributor 油底壳 sump 正时齿轮 timing gear crankshaft and connecting rod mechanism 曲柄连杆机构 配气机构 valve gear 燃油系统 fuel system 火花塞 Spark plug 排气歧管 exhaust manifold
Reading
In other words, the piston completes a stroke each time it changes its direction of motion. 换句话说，活塞每完成一次冲程就会改变运动方向。
In other words
In other words, they remain relatively constant or static. 换句话说，它们相对的稳定、静止。 In other words, we have adhered to scientific socialism. 也就是说，我们坚持了科学社会主义

Engine surges or stalls
01
03 02
Fault symptoms and causes
• Engine runs rough or surges
Fault symptoms and causes
Engine leaks oil
Engine consumes oil excessively
01
02
03
04
定期检查机油、冷却液、 刹车液等是否充足。
定期更换空气滤清器、 机油滤清器和燃油滤清 器。
定期检查轮胎气压和磨 损情况，确保轮胎安全。
定期进行发动机和车身 的清洁，保持车辆整洁。
Engine oil and filter
01
02
03
04
正确选择机油的型号和粘度， 确保与发动机的要求相匹配。
used to connect to the OBD II port and retrieve diagnostic information.
Common troubleshooting
Check the battery and cables for corrosion or damage.
Check the air filter for blockage or damage.
电动汽车技术的应用
随着政府对环保政策的推动和消费者对环保的关注，电动汽车市场正在 不断增长。许多汽车品牌都在推出电动汽车或计划在未来推出相关车型， 如特斯拉、宝马和奥迪等。
Fuel cell technology
要点一
燃料电池技术
燃料电池是一种将燃料（通常是氢气 ）和氧化剂（通常是氧气）通过化学 反应转化为电能的装置。这种技术可 以提供清洁、高效的能源，并可用于 汽车和其他应用。

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1.2 Car Production 汽车生产
3. Paint Shop 涂装车间
Coating is a systematic engineering, which includes three basic processes of surface treatment, coating process and drying before coating, as well as a reasonable coating system.Maintaining a spotlessly clean, dust-free environment is critical to the quality and consistency of each car’s paint job. Now, in order to make the quality standard for line-off, there are four layers in painting including: ED, Sealer & PVC, Primer and Topcoat.
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1.1 Structure of an Automobile 汽车构造
1．Engine 发动机
The engine-the“heart”of the automobile-operates on internal combustion, meaning the fuel used for its power is burned inside of the engine. The four-stroke engine is the most common type of automobile engine. The engine is comprised of pistons, cylinders, tubes to deliver fuel to the cylinders, and other components . Each system is necessary for making the automobile run and reducing noise and pollution.

散热器 水冷系统 风冷系统 冷却液 防冻液 水套 节温器 水泵 散热器盖 离心式水泵
Centrifugal water pump
Water pump housing
impeller Outlet water pipe
Inlet water pipe
Automobile English
shutter radiator
fan
water pump water pipe thermostat
I. Pre-questions

How does the coolant circulate when the thermostat opens?
the cylinder head water pump
组 成
起动机 点火开关
蓄电池
起动机：
Solenoid transmission
['s ə ʊ l ə n ɒ ɪ d ]
direct-current motor
单词分解：
拨叉 电磁开关
1
7
碳刷架
6
5
换向器
驱动齿轮
4 2 3
励磁线圈
电枢
这里连接的是什么？
单词分解：



拨叉 shift lever 驱动齿轮 pinion / drive gear 励磁线圈 armature 电枢 motor armature 换向器 collector 碳刷架 brush holder 电磁开关 solenoid
Automobile English
3-5 The system of engine
I. Pre-questions


What does the water-cooling system consist of? the engine water jacket, thermostat, water pump, shutter, radiator, radiator cap, fan, fan drive belt and necessary hoses.

（2） The Cylinder Head The cylinder head is bolted to the cylinder block. The top of the cylinder block is covered with the cylinder head which contains the combustion chamber （Fig.2-1）.
（2） Flywheel The flywheel is a comparatively heavy wheel, bolted to the flywheel flange on the rear end of the crankshaft. The inertia of the flywheel tends to keep it rotating at a constant speed. The flywheel also has several other functions, for example, the flywheel has ring gear in its outer circumference,which mesh with teeth located on the starting motor drive pinion in order to crank the engine over. In addition, the rear surface of the flywheel serves as the driving member of the clutch assembly （Fig.2-2）.
III. Exercises
compression rings oil rings piston pin piston connecting rod