(汽车专业英语课件）Model Six Automotive Electrical System.ppt

Model Six Automotive Electrical System Warm-up Suggestions（建议） 1. Ask the students to read the words of components loudly.（让学生大声朗读单词） 2. Say something about the uses of these components.（说出零部件用途） 3. Put the Chinese names beside the English words in the picture.（把中文名称写在英文名称旁） Fig.I-15 driving belt 传动带 2. electronic control Unit 电压调节器 3. battery 蓄电池4. alternator 发电机 5. starter relay 起动机继电器 6. starting motor 起动机 7. ammeter 电流表8. ignition switch 点火开关 Passage learning （课文学习） ?Automotive Electrical System 汽车电器系统Electricity is a form of energy: compared to other forms of energy such as heat, light, mechanical and chemical energy.It has the following advantages: 1 High quantities of energy can be transported over long distances via power lines to the most remote areas. 2 It can be converted easily into energy forms, e.g. heat in preheating systems, light in filament lamps, mechanical energy in electric motors, chemical energy when charging starter batteries. 3 The conversion of electrical energy into other energy forms is to a large extent non-polluting.The electrical system of a modern automobile consists of four main circuits and a number of branch circuits. The four main circuits are the general circuit, starting circuit, the ignition circuit and lighting circuit. All the main circuits are connected together and linked to the car battery.The electrical system is one of the basic parts of all vehicles. It can produce, store, and distribute all the electricity that auto needs.The major components of automotive electrical system include the starting system, charging system, ignition system and accessory system.In recent years, auto electrical system has changed a lot. Many different auxiliary electrical devices are used in modern cars, such as air-conditioning system, phones, televisions, radios, CD and DVD players with surround sound system, electric door locks and so on. ? New words and expressions （生词和词组） distribute v. 分配，分给major adj. 主要的 accessory ad