Unit 1 汽车专业英语(车辆的种类、汽车基本结构).ppt

1、Unit oneAutomobile Basics,Contents,Pre-questions,II. Text Explanation,III. Exercises,Types of Modern Automobiles 1）cars 2）passenger cars 3）trucks 4）tractors and vehicle combination 5）special type vehicle 6）Self-dumping car 7）farm vehicle 8) off-road vehicle,Pre-questions,Special vehicle,car,Tractor,

2、Truck,Passenger Cars,2、with respect to engine arrangement and driving type,Pre-questions,Do you know who built the first car in the world and when? Karl Benz In 1886,Pre-questions,How many main parts does the automobile consist of?,1-engine,2-chassis,3-body,4-electrical system,Pre-questions,New Word

3、s and New Words and Expressions,component kmpunnt n.成分，组成，部件，零件 chassis si n.底盘 transmission trnzmin n.变速器，传动, 传动系统，传送，发射 ignite ignait v.点火, 点燃 suspension sspennn.悬架，悬挂,New Words and New Words and Expressions,spark-ignition engine 点燃式发动机 compression-ignition engine 压燃式发动机 storage battery 蓄电池 igniti

4、on coil 点火线圈 power train 传动系，动力装置 propeller shaft 传动轴 ( = drive shaft ),Section A The Basic Components of an Automobile Todays average car contains more than 15,000 separate, individual parts that must work together. These parts can be grouped into four major categories: engine, body, chassis and el

5、ectrical equipments.,Engine The engine acts as the power unit. The internal combustion engine is most common: this obtains its power by burning a liquid fuel inside the engine cylinder. There are two types of engine: gasoline (also called a spark-ignition engine) and diesel (also called a compressio

6、n-ignition engine). Both engines are called heat engines; the burning fuel generates heat which causes the gas inside the cylinder to increase its pressure and supply power to rotate a shaft connected to the transmission .,Chassis The chassis is an assembly of those systems that are the major operat

7、ing parts of a vehicle. The chassis includes the power train, suspension, steering, and brake systems.,Body An automobile body is a sheet metal shell with windows, doors, a hood, and a trunk deck built into it. It provides a protective covering for the engine, passengers, and cargo. The body is desi

8、gned to keep passengers safe and comfortable.,Electrical Equipment The electrical system supplies electricity for the ignition, horn, lights, heater, and starter. The electricity level is maintained by a charging circuit. This circuit consists of a battery, and an alternator (or generator). The batt

9、ery stores electricity. The alternator changes the engines mechanical energy into electrical energy and recharges the battery.,Which is called the “ heart” of automobile? An engine that is used to supply power for an automobile What is the chassis composed of? Power train, suspension, steering syste

10、m and brake system.,Questions,Power train system,Brake system,Steering system,Suspension system,Pre-questions,What is the electrical system composed of? The electric system includes the battery, generator, starting system, ignition system, lighting system, horn system, radio and other devices.,Pre-q

11、uestions,What are the functions of the four systems? Driving system works by transmitting engine power to the driving wheels. Suspension systems function is to increase strength and durability of components and to meet customers requirements for riding comfort and driving safety. Steering system is

12、used to control the driving direction of an automobile. Brake system is used to retard the motion of the vehicle.,Questions,Section C Reading,An automobile or motor car ( usually shortened to just car ) is a wheeled passenger vehicle that carries its own engine or motor. Most definitions of it speci

13、fy that automobiles are designed to run on roads, to have seating for one to eight people, to typically have four wheels, and to be constructed for the transport of people or goods. However, the definition is not precise because there are many types of vehicles that do similar tasks.,In other words,

14、 any automobile is composed of the sections such as engine, chassis, body and electric system. In other words 换句话说 be composed of 由.组成 译文：换句话说，任何一辆汽车都是由发动机、底盘、车身和电器设备组成的。,II. Text Explanation,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, w

15、e have adhered to scientific socialism. 也就是说，我们坚持了科学社会主义。 be composed of Navy must be composed of surface ship unit and submarine unit. 海军一定是由水面舰艇部队和潜艇部队组成。,II. Text Explanation,III. Exercises,Translate the following expressions into Chinese. chassis driving system internal combustion engine steerin

16、g system braking system propeller shaft Generator Transmission Ignition coil Suspension Engine Component Storage battery,底盘 传动系统 内燃机 转向系统 制动系统 传动轴 发电机 变速器 点火线圈 悬挂 发动机 零件 蓄电池,Identify the English names of chassis according to the picture.,III. Exercises,engine; clutch(离合器）; transmission; propeller sh

17、aft; differential（差速器）; rear axle（后轴）,I. Translate the following sentences into Chinese. In effect, the driving system works by transmitting engine power to the driving wheels. 实际上，传动系统的作用是将发动机的动力传递到驱动车轮。 The electric system supplies lighting and driving power for the automobile. 电气系统可为汽车提供照明和驱动的电力。 The body styling provides an attractive, colorful, modern appearance for