1、Unit Seven Car Body and Electrical System Passage ACar Body and Car Style Car body is one of four key automotive assemblies It refers to the outer shell of a car Car body includes engine compartment,passenger compartment and cargo compartment and so on Car styles refers to the shape of car body Diff
2、erent cars use different car bodies and car styles befitting their varied uses.Car Body There are two types of car body:one is body-on-frame that means the car body and frame are separated The body is mounted on this rigid frame as shown in Fig.7-1 The main functions of the frame in a car are to sup
3、port the cars mechanical components such as the drive train and the car body;to bear the weight of passengers and cargo loads;and to withstand the sudden impact from collisions This type of body-on-frame is often found in trucks and buses The other is unitized body that means the cars frame and body
4、 are integrated into a single strong structure(see Fig.7-2).Nowadays,almost all modern passenger cars use unitized body In this fully integrated body structure approach,the entire car is a load-carrying unit that can withstand the forces from driving and cargo loads The unitized body is typically ma
5、nufactured by welding various metal elements such as cross and side members,pillars,rails and other components together as one piece,forming a cars skeleton or framework(for details to see Fig 7-3).The framework is a base for installing engine hood,truck lid,roof,fenders,doors,and windscreens etc.(f
6、or details to see Fig.7-4).Vehicle Style There are many different car styles with various streamlines such as sedan,hatchback,SUV,crossover,convertible,van,and pick up Among these car styles mentioned above,the most common family car styles are sedan and hatchback because they are economical and pra
7、ctical Sedan is four-door car,also called three-box car We can see in Fig.7-5,there are three separate compartments:engine compartment,passenger compartment and cargo compartment This kind of car style is the first choice of most customers in China Hatchback is often called two-box car The front com
8、partment of the hatchback is not different from that of the sedan,and the effect is the same But its passenger compartment is integrated with cargo compartment including a rear door for cargo access So in this style of hatchback,there are some three-door hatchbacks and some five-door hatchbacks(see
9、Fig.7-6).Now this kind of car style is more and more popular in the Chinese markets Off-road vehicles such as SUV belong to hatchbacks Crossover,however,looks just like SUV in appearance But actually,it is a front-wheel-drive car without off-road function So it is considered as urban SUV Convertible
10、 refers to the car whose roof is folded according to the operators de-sire Convertible has two kinds:one is a hard-top convertible whose roof is made of metal,the other is a soft-top convertible whose roof is made of canvas(see Fig.7-7).Van has an enclosed compartment which can be used to carry eith
11、er passengers or cargo according to its different purposes(see Fig.7-8).Pickup has a passenger compartment and a cargo box in the rear It can carry passengers and cargo as well(see Fig.7-9).New Words and Expressionsshell el n 壳;外形cargo kgu n 货物befit bifit vt 适合于varied verid adj 不同的,各种各样的impact impkt
12、 n 碰撞;冲击力collision klin n 撞击integrated intigreitid adj 集成的,整合的approach prut n 方法various veris adj 各种各样的,不同的skeleton skelitn n 骨架,骨骼streamline strimlain n 流线;流线型urban bn adj 城市的fold fuld vt 折叠;canvas knvs n 帆布enclosed inkluzd adj 封闭的Common Automobile Terms pillar pil n 柱子,立柱 rail reil n 横杆 roof ruf n
13、 车顶 windscreen windskrin n 汽车风窗玻璃 fender fend n (汽车的)翼子板,侧围 framework freimwk n 车架,框架 sedan sidn n 轿车,四门轿车 hatchback htbk n 掀背车 crossover krsuv n 跨界车 convertible knvbl n 敞篷车 van vn n 厢式车,厢型车 pickup pikp n 皮卡 car body车身 body-on-frame非承载式车身Common Automobile Terms unitized body承载式车身 passenger car乘用车 cross member横梁 side member侧梁 engine hood发动机罩 trunk lid行李箱盖 car style车型 three-box car三厢车 passenger compartment乘员舱 cargo compartment货舱 two-box car两厢车 hard-top convertible硬顶敞篷车 soft-top convertible软顶敞篷车
