《(汽车实用英语课件)Unit 5Automobile Structure》由会员分享，可在线阅读，更多相关《(汽车实用英语课件)Unit 5Automobile Structure（48页珍藏版）》请在金锄头文库上搜索。
1、Unit FiveAutomobile Structure Unit Five Automobile Structure Poetry in motion, dancing close to me. TOYOTA It never happened before, because it all happened before. Mercedes-BenzVIII. New Words the burning fuel generates heat which causes the gas inside the cylinder to increase its pressure and supp
2、ly power to rotate a shaft connected to the transmission. 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 designed to keep passengers safe and comfortable. The
3、body styling provides an attractive, colorful, modern appearance for the vehicle. The chassis is an assembly of those systems that are the major operating part of a vehicle. The chassis includes the transmission, suspension, steering, and brake systems. Transmission systems conveys the drive to the
4、wheels. The main components are clutch, gearbox, driveshaft, final drive, and differential. Suspension absorbs the road shocks. Steering controls the direction of the movement. Brake slows down the vehicle. The electrical system supplies electricity for the ignition, horn, lights, heater, and starte
5、r. The electricity level is maintained by a charging circuit. This circuit consists of the battery, alternator (or generator). The battery stores electricity. The alternator changes the engines mechanical energy into electrical energy and recharges the battery. 1. Ask and answer.(1) List the main pa
6、rts of an automobile? Engine, body, chassis and electrical equipment. (2) Which systems does a chassis include and what are the main functions of the chassis?The chassis includes the transmission, suspension, steering, and brake systems. Transmission systems conveys the drive to the wheels. The main
7、 components are clutch, gearbox, driveshaft, final drive, and differential. Suspension absorbs the road shocks. Steering controls the direction of the movement. Brake slows down the vehicle. (3) Why are suspension systems used on vehicles?Suspension absorbs the road shocks. (4) Whats the function of
8、 the electrical system?The electrical system supplies electricity for the ignition, horn, lights, heater, and starter. 2. True (T) or false (F).(1) Todays average car contains more than 150,000 separate, individual parts that must work together. (2) The body is designed to keep drivers safe and comf
9、ortable. (3) Transmission systems absorbs the road shocks. (4) The alternator changes the engines mechanical energy into electrical energy and recharges the battery. ( T )( F )( F )( F )3. Translation. (1)These parts can grouped into four major categories: engine, body, chassis and electrical equipm
10、ent. 这些零件被分为括4个主要功能部分：引擎，车身，底 盘和电控。 (2) 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. 两种引擎都叫热机。燃烧的燃料产生大量大热，热量 使缸内的气体产生大的压力，通过连杆使曲轴旋转. (3) An aut
11、omobile 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. 车身有窗户，门，盖，内饰等组成，它为发动机、乘 客及货物提供空间和保护。 (4) The electrical system supplies electricity for the ignition, horn, lights, heater, and st
12、arter. 电动系统主要为点火系统，喇叭，灯，加热器，及启 动系统提供电能。Passage I 翻译： 汽车的四大组成部分现代汽车有超过15000个零件组成，分成几个必须在一起工作的功能 部分。这些零件被分为4个主要功能部分：引擎，车身，底盘和电控。 引擎为汽车提供能源。一般是内燃机：通过在引擎缸内燃烧液体燃料 获得能量。引擎有两种：汽油机和柴油机。两种引擎都叫热机。燃烧的 燃料产生大量大热，热量使缸内的气体产生大的压力，通过连杆使曲轴 旋转。车身有窗户，门，盖，内饰等组成，它为发动机、乘客及货物提供空 间和保护。车身的设计要让乘客安全并乘坐舒适。对于乘用汽车，车身 要动感，色彩绚丽，现代化
13、。底盘是一个组合体，主要由汽车的操纵部分，传动系统，悬架，转向 部分，制动系统组成。传动系统用来驱动车轮。主要有离合器，变速箱 ，驱动轴，最后驱动和差速器组成。悬架主要用来吸收路面冲击。转向 系统控制汽车的行驶方向。制动系统使汽车停下来。电动系统主要为点火系统，喇叭，灯，加热器，及启动系统提供电能 。电压通过一个电路保持恒定。这个电路有电池，发电机组成。电池储 存电能，发电机把引擎的机械能转化为电能，给电池充电。 Passage II Automobile Engine The automobile engine is an internal combustion engine which c
14、onverts the heat energy of fuel into mechanical energy to make the car move. As the source of power, the engine requires a fuel system to supply it with the mixture of air and fuel or fuel. It plays a vital role in the power- producing process. Suppose the engine is a gasoline engine, the fuel syste
15、m pumps liquid gasoline from a tank into the carburetor where the gasoline can be mixed with air. The mixture is delivered to the engine where it is burned. If engine is EFI engine, fuel is delivered from the tank to the injector by means of an electric fuel pump. The fuel injectors, which directly
16、control fuel metering to the intake manifold, are pulsed by the ECU. The ECU determines air/fuel ratio of the engine according to engine condition.The engine also needs a cooling system, because the combustion of the air-fuel mixture in the engine creates a very high temperature (as high as 2000 to 2700). The cooling system takes heat away from the engine by either circulating a liquid coolant (water mix
