1、汽车专业英语课程论文学生姓名： 专 业： 车辆工程 班 级： 八班 学 号： 指导教师： 华南理工大学广州学院1Automotive technologySummary : Automotive born since the last century , has gone through ups and downs of a hundred years . From Karl Benz s first create a three-wheeled car to 18 kilometers per hour , went now , actually born from zero speed t
2、o accelerate to 100 km / h takes only a little more than three seconds supercar . From simple ordinary car into a set of audio, navigation , night vision , energy is one of the modern smart car . This century , the speed of development of the car is so amazing !Keywords : energy , smart , safe and c
3、omfortableIntroduction : In 1886, the worlds first motor car came equipped with one . Since then, mankind goodbye to the “ buggy era“ , entered the “ age of the automobile .“ Thus the art of walking humans given a new meaning. This not only changed peoples way of life, but also changes in the world
4、economy, culture , penetrated into all areas of human production and life, directly affects the human development process. People can not help but exclaim : Auto is the machine that changed the world , is run through the 20th century s most influential major inventions .Car , by the tens of thousand
5、s of parts of this combination walking machine , as pottery , stone , bronze , steam represents an era of human civilization as it burst out of cultural ideas , the condensation of human wisdom, shining contemporary science and technology, light plastic arts , the interpretation of human civilizatio
6、n and pride today .Vice president of research and planning GM Burns said: “The car of the future will have the following seven characteristics : safe , inexpensive, environmentally friendly, practical, efficient , saving time and providing contact with the outside world, which means automotive indus
7、try must focus on low-cost, practicality, design and technical innovation . “ today, in this network drive of the day, digital applications is growing at an unprecedented rate and the way to integrate the cars design, engineering , procurement and manufacturing integrate the business , which enables
8、 us to shorten the development time of the car, and at a faster speed to market of new cars . There are two main aspects:First, the car design. As more and more use of computer tools to be 2able to develop more models, models in a shorter time . As more and more use of mathematical models to simulat
9、e the design verification can be achieved and recognized automotive aerodynamics , anti- collision performance , manufacturability , thus greatly reducing development time . Meanwhile car manufacturers are increasingly using virtual vehicle concept , eliminating the need to produce physical prototyp
10、es can be assembled to observe , simulate vehicle performance and manufacturing processes, and to carry out more and more manufacturers, research institutes , government and among suppliers strategic partnership to further accelerate the vehicle development time .As the leading consumer lifestyle au
11、tomotive design trends, the birth of a new kind of car , and then more and more to meet consumer demand . These new products will be a combination of sedan, station wagon, pickup trucks, sport utility vehicle characteristics in varying degrees , but also will contribute to further differentiate the
12、automotive market .Second, in terms of vehicle dynamics . Experts predict that in the next 10 years, the internal combustion engine will continue to play a major source of automotive power . However, the main development direction of future automotive power systems are increasingly adopting lean-bur
13、n gasoline engines, diesel engine technology , optimized fuel engine combination , as well as better catalytic technology.Automotive powertrain configuration will have changed. Multiple power technology and fuel hybrid electric vehicles, fuel cell vehicles , etc. will become increasingly popular. Th
14、ese cutting-edge technology is expected to reduce or eliminate vehicle emissions and pollution of the environment in the future.Furthermore, future vehicles , large mechanical systems will be replaced by electronic systems. This will greatly improve the car s driving performance and driving safety .
15、 Its features such as: speech recognition , keyless ignition , etc. .It can be said , is a prominent feature of the new generation of car : the car will be configured more electronic devices, computer capabilities and Internet access. The car is equipped with : Traffic Information function , route p
16、lanning and navigation equipment, advanced navigation 3equipment, automotive infotainment devices. So , the car will become available and consumers to exchange home, office information unit of information , communication and entertainment center. In the automotive safety : In order to protect the sa
17、fety of vehicle occupants , car manufacturers will set a new generation of seat belts in the car, the energy absorbing structure , front and side airbags , smart sensors trigger airbags , emergency situations of distress signals.First, energy saving eraA “ green clean “ technologyIn early 2013 , man
18、y cities including Beijing shrouded in a haze being , PM2.5 index in some cities even once close to 1000 , sulfur faintly audible , and therefore a lot of people even admitted to the hospital .PM2.5 refers to the diameter of the atmosphere is less than or equal to 2.5 micron particles, because it is
19、 difficult to human settlement and will be directly inhaled into the lungs and into the blood, so it will threaten peoples health, especially those living in having thousands million people and hundreds of million vehicles in big cities people. For a car prices, although unable to make changes to th
20、e environment of the city, but avoid sitting in the car through technical innovations such person inhaled particulate matter. PM2.5 Green Net technology into the car of a diameter less than or equal to 2.5 micron particles by electrostatic effects similar to blocking and filtering, and ultimately ac
21、hieve the effect of: outdoor PM2.5 is higher than the value in the case of 150 , the value of the car PM2.5 under 12, which is equivalent to the level of excellent air quality index level.January 10, 2013 , world-class technical analysis meeting held in Beijing, BYD announced a product called “ gree
22、n clean “ car new technology that can effectively deal with fog and haze travel problems .The so-called “ green clean “ technology is inside the air filter technology, which can be triple car air purifier , PM2.5 control the car in 12 or less, provide a healthy environment for air passengers in the
23、car , and the entire purification process only a few seconds . In addition, for many suffering from “passive smoking“ troubled people who believe that “ green clean“ technology will be a big “welfare .“ It is understood , 4pm2.5 Green Net technology integration in the car air-conditioning systems ,
24、enabling the car or vehicle air pm2.5 testing, and have for car air filtration , sterilization, deodorant and other purification. The technology will purify the air through four , by purifying the air pm2.5 value can be reduced to 12 or less, for the majority of users to be able to create a little s
25、pace to breathe healthy air .图1 比亚迪“绿净”技术的两项核心技术BYD net new green technologies developed PM2.5, is a technique to improve the air quality inside the vehicle. BYD to customer demand, but also to long-standing practice green business ideas, technology integration innovation launched by the Green PM2.5
26、 net technology. This technology through triple purification, the first layer ionization plate, a second layer of fluffy cotton static electricity, and the third layer HAF, can quickly clean the compartment diameter greater than 0.2 microns can be suspended particulate matter within 30 seconds, achi
27、eved when the vehicle environment PM2.5 greater than 150, the car is less than the effect of ambient PM2.5 12, greatly enhance the interior air quality. If someone smoking car, start the technology will soon be filtered smoke, vehicle environment can quickly be purified, in terms of which the majori
28、ty of smokers are also a great boon. We can say that BYDs green technology not only allows the net to have everyone be able to breathe healthy air in a small space, a lot more to improve urban pollution provides a practical solution.BYD “ green net “ includes two core technologies - electret 5electr
29、ostatic capture technology and dual ESP technology. Using electrostatic capture electret charged electret fine particles in the air to change direction , the impact on the filter fibers are intercepted. ESP art dual electrostatic generator charged particles in the air , due to the electrostatic effe
30、ct through HAF was blocked material removed . B “car green lighting “ LED lights50 years ago, people already know the basics of semiconductor material can produce light , the first commercial diode produced in 1960 . The core of the light-emitting diode is a wafer made of a p -type semiconductor and
31、 an n -type semiconductor , the p -type semiconductor between the n -type semiconductor and an intermediate layer , called the pn junction . In some semiconductor materials , PN junction, the injection of minority carriers and majority carrier recombination will the excess energy released in the for
32、m of light , which converts electrical energy directly into light energy . PN junction reverse voltage , minority carrier injection is difficult, it is not light . This use of injection electroluminescent diodes called the principle of making light-emitting diodes, commonly known as LED. When it is
33、in working condition ( ie, ends with a positive voltage ) , current from the LED anode to the cathode , the semiconductor crystals from the ultraviolet to the infrared light of different colors , light intensity and current . High light efficiency, low light decay power LED, has been widely used in
34、many lighting lamps, mining lamps, tunnel lights, spotlights, fluorescent lamps , etc. , by the industry alike.Features source : new green light : LED cold light source using a small glare, no radiation, no use of harmful substances. LED s operating voltage is low, the DC drive, ultra-low power cons
35、umption ( single tube 0.03 0.06W), electro-optical power conversion close to 100% , under the same lighting effects than traditional energy sources more than 80%. LED s environmental benefits of better , no ultraviolet and infrared spectra , and recyclable waste , no pollution , no mercury elements
36、, safe touch , typical of the green lighting. Long life : LED is solid cold light source, epoxy resin, anti-vibration, light body and no loose parts , there is no filament light easy to 6burn , heat deposition , the light fades and other shortcomings , the service life of up to 60,000 to 100,000 hou
37、rs, which is more than 10 times the life of traditional light sources . LED performance and stability , can work normally under -30 +50 oC environment. Multi- transform : LED light source can make use of red, green and blue color theory , under the control of computer technology to make three kinds
38、of colors with 256 gray scale , and any mix , you can generate 256X256X256 ( ie 16777216 ) colors to form a different light color combination. LED color changing light combination can achieve a variety of dynamic effects and variety of images. high-tech : Compared with conventional light sources glo
39、w , LED lighting is low voltage microelectronic products , the successful integration of computer technology, network communication technology, image processing and embedded control technology. Chip size used in conventional LED lights for 0.25mmX0.25nm, while the size of LED lighting are generally
40、required in 1.0mmX1.0mm more. Working Desktop LED die molded structure , inverted pyramid structure and flip-chip design can improve the luminous efficiency , thus sending more light. The innovative design of the LED package includes a substrate of high conductivity metal block , the flip chip desig
41、n and the naked disc cast lead frame type , these methods can design a high power, low thermal resistance of the device used , and illumination than conventional LED devices greater illumination products .LED is an electronic light-emitting principle of the use made of semiconductor devices, which c
42、an directly convert electrical energy into variable light with high luminous efficiency , long life, low power consumption, small size and other characteristics , known as the 21st century “car green lighting . “ Speaking from the manufacturing process , materials used in the production of LED light
43、 source does not contain heavy metals, compared with other light sources emitting efficiency can be improved by more than 20%. LED lifetime is very long , the average time between failures of 100,000 h, and the LED are solid package of solid light , its resistance to vibration but also other sources
44、 can not be compared, from the point of view of these advantages , LED energy 7saving is undoubtedly the first choice , a typical example is precisely because of this , LED lights in automotive interior lighting has also been widely used, the Audi A8 with optional ambient lighting in the lighting pa
45、ckage is for this application. Due to energy saving LED lights is very good, it also applies to urban rail vehicle lighting systems.As LED lighting is not only environmentally-friendly cars , more important is to ensure the safety and reliability . For example in 2008 in an Audi -developed beam will
46、 allow motorists driving at night , not because the lights are too bright leaving the driver of the oncoming vehicle explosion temporarily blinded . By changing the lighting step , so that this technique can be achieved : an electronic system to keep the distance between any vehicle approaching test
47、ed to ensure no irritation to the driver of the oncoming vehicle while on the road ahead for ideal lighting , for example, when traveling in the city, the interior lights will be brighter ; while driving on rural roads, the lights will automatically dim outside the car so as not to affect vision . T
48、his function is achieved headlights with LED lights manufactured .LED s safety is more important is reflected in its rapid response capacity, in reality the real vehicle test, the same person in the speed of 80 km of the situation began to brake , the LED will watch the reaction speed is faster than
49、 incandescent ahead 4-5 m to achieve full brake. This highlights the rapid reaction capability in taillights , you can greatly improve driver safety.As the cost of LED , light is confined to a few years ago this Reiz , Crown , Cadillac, Sagitar , majestic , like other high-end sedan , but the development up to now , a lot of middle and low car also used LED lights.2010 , car manufacturers in Formula One racing pioneered and embraced LED lights as taillights, brake lights and daytime running lights . Thus , LED lamps and energy-saving safety a
