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1、The electric car a gree n tran sport revoluti on in the making?As the worlds continuing energy crisis, and war and oil consumption and energy car full with the amount of increase,decrease energy day by day, one day it will disappear without a trace. Oil is not living resources. Oil consumption in th
2、e net must be to find a substitute before. With the development of technology and social progress, the invention of the electric vehicles will be effective help ease the financial difficulty. Electric cars will become the ideal means of transport.Faced with high energy costs and rising consumer and
3、government concern over the fate of the environment, the worlds automakers are stepping up investment in the development of alternative power train technologies that promise to substantially cut fuel consumption and reduce greenhouse gas emissions.Much attention to-date has focused on advances by Ja
4、panese and American automakers in the development of hybrid and battery electric vehicles. Toyotas, Prius has emerged as the best-selling hybrid car in the world. TesIa Motors, a US-based start-up, has launched its first battery electric vehicle, the Tesla Roadster. By the end of 2010, GM plans to l
5、aunch its much-touted Volt hybrid, while Chrysler has recently announced similar plans.The Chinese government also has the National High Technology Research and Development Program (863 Program) specifically listed, including hybrid vehicles, including electric cars of major projects. At present, Ch
6、inas independent innovation of new energy vehicles in the process, adhere to the government support to core technology, key components and system integration focusing on the principles established in hybrid electric vehicles, pure electric vehicles, fuel cell vehicles as a three vertical Several Eur
7、opean countries as well as U.S,Japan,China and others, have recently announced bold plans for the introduction of electric vehicles. These include fiscal incentives, funding research on batteries and electric vehicles and plans for the deployment of a charging infrastructure. Major cities such as Lo
8、ndon and Paris have announced electric car-sharing systems, while public administrations and companies using large captive fleets are purchasing electric vehicles.At the same time, utilities, car manufacturers, battery producers and academics are joining forces on initiatives such as the EURELECTRIC
9、 Task Force on Electric Vehicles and EpoSS,the European Technology Platform on Smart Systems Integration. Together with the European Investment Bank the European Commission has launched the European Green Cars Initiative, with EUR 5 billion partly dedicated to the research, development and manufactu
10、ring of batteries and electric cars and to demonstration projects.This flurry of activity seems to indicate that the electric car is heading for a major breakthrough at last - but is it here to stay this time? History calls for caution. The production of electric vehicles began as far back as 1838 5
11、2 years before combustion engine vehicles. However, after 1913 the mass commercialization of the combustion engine led to a rapid decline in electric vehicles. Attempts to reintroduce electric vehicles in past decades have for the most part been unsuccessful and they still represent a very small, ni
12、che market.One of the biggest issues facing the potential take-up of electric vehicles is the rate of improvement in the performance of electric vehicle batteries.The biggest drag on electric vehicle performance comes from the lithium-ion battery, which can add another 220 kilograms to the total wei
13、ght of a car, versus an ICE-powered vehicle.Since most passenger vehicles in China today are driven in urban areas, where shorter distances and slower speeds are the norm, this may not prove to be as vexing an issue as it is in other markets such as the US or Europe, where the average driving distan
14、ce and top speed are considerably longer and higher. Continued research and development into electric battery technology is generating promising improvements in performance. US-based A123Systems,one of the worlds largest producers of high-power lithium-ion batteries,Announced a battery capable of po
15、wering a car for 200 kilometers between charges. Toshiba recently announced the commercial launch of its Super Charge battery, which can be charged to 90 percent capacity in less than five minutes.Yet today the future looks brighter. A great deal of progress has been made in battery technology and e
16、lectric vehicles are expected to re-enter the market on a large scale within the next couple of years. Based on a moderate growth scenario, by 2050, electric vehicles could represent more than 60%of new sales and constitute up to 25% of the global car fleet. However, estimates of the extent of futur
17、e deployment vary greatly, as there is still some uncertainty in relation to the development of technology and future consumer behavior.One of the primary benefits of electric vehicles is, of course, the reduction of Green house gases emitted into the atmosphere. Our calculation of the total carbon
18、abatement potential of alternative power train technologies counted not only the CO2 emissions that vehicles produce, but also emissions produced through out their entire life-cycle, from the CO2 emitted during the generation of electric power through to the transportation of fuel.Over a period of 8
19、 months in 2008, a global McKinsey team studied the passenger vehicle industries in North America, Europe, China, and India. The team examined four power train technology alternatives, chosen on the basis of existing technologies and their near-term commercial feasibility. They contrasted them to co
20、nventional internal combustion engine (ICE) vehicles that run on gasoline or diesel.Full hybrid vehicles: Running primarily on gasoline, full hybrids are powered by a battery during acceleration of the vehicle, but draw most of their power from an internal combustion engine. Full hybrids, equipped w
21、ith ICE improvement technologies mentioned above, have a life-cycle carbon abatement potential of 56 percent.Compressed natural gas (CNG) vehicles: CNG vehicles are normally perceived to be a source of clean energy, but their life cycle carbon abatement potential depends wholly on the source of the
22、gas 一 the greater the distance the gas needs to be transported, the higher this power trains well-to-tank emissions. CNG cars rank close to hybrids in their life-cycle carbon abatement potential at 55 percent, assuming the gas comes from local sources.Electric vehicles: Electric vehicles include plu
23、g-in hybrid vehicles (PHEV) and battery electric vehicles (BEV). Compared with full hybrids, plug-in hybrid vehicles contain a much bigger battery that can power the vehicle for a longer distance without the aid of an internal combustion engine, can be recharged by plugging them into standard electr
24、ic sockets, and derive a smaller proportion of their propulsion from the internal combustion engine. Can be recharged by plugging them into standard electric sockets, and derive a smaller proportion of their propulsion from the internal combustion engine. Batteryelectricvehicles run solely on batter
25、y power without the aid of any internal combustion mechanism. Given reliance on coal-fired plants for electricity.electric vehicles today only have a 19 percent carbon abatement potential over current internal combustion engine technologies; however, this can be increased to as much as 49 percent if
26、 diversifies its energy mix towards alternative energy sources for its supply of electric power.Electric vehicles have zero tailpipe emissions, but there are, of course, emissions involved in the production of electricity. As an example, with no concerted action to adopt new power train technologies
27、, the level ofCO2 emissions from passenger cars in China could reach nearly 1.2 billion tons in 2030. However, our research showed that by adopting a mix of various alternative power train technologies, China could cut emissions from passenger vehicles by up to 45 percent. Relative to other power tr
28、ain technologies, electric vehicles demonstrate a some what weaker carbon abatement potential. While full hybrid cars have an abatement potential of 56 percent, electric vehicles potential stands at 19 percent. This can be explained by the fact that China still relies on coal-fired plants for as muc
29、h as 85 percent of its electricity supply. This can be explained by the fact that China still relies on coal-fired plants for as much as 85 percent of its electricity supply.It also can blossom into another electric car benefits of electric vehicles is th e “ displacement “ of harmful air pollutants
30、 from urban to rural areas, where population exposure is lower. Noise levels are also lower, particularly in urban driving conditions.Another major advantage of electric vehicles is their energy efficiency. With a tank-to-wheel efficiency in the range of 60 to 80 %, they outperform conventional cars
31、 four-fold. Generally, electric vehicles show greatest energy savings at low speeds and in situations involving frequently-changing driving dynamics, which is another reason why cities are a prime target market.Electric vehicles will also create opportunities for software developers. Electric vehicl
32、es require an electronic interface that informs the driver of the status of the cars vital statistics, from fuel and battery usage, to split-second updates in GPS navigation systems. Venture-backed start-up Better Place is developing a comprehensive information management system it calls AutOS.that
33、will, among other things, inform the driver of the nearest battery-charging stations.While other technologies such as fuel cells hold great promise in reducing CO2 emissions, its commercial application remains years away. Investing in electric vehicles, however, does not mean Chinese OEMs and suppli
34、ers should stop their research into other technologies. Rather, they should maintain a balanced technology portfolio, with electric vehicles being a near-term solution, while viewing other technologies such as fuel cells as a potential long-term solution that could yield returns once the technology
35、becomes commercially viable.Thanks to their energy efficiency, and assuming that electricity generation will be even greener in the future, electric vehicles could contribute to a considerable reduction in greenhouse gases. Given the ongoing debate on climate change, this could prove to be an import
36、ant factor. Indeed, transport is responsible for more than a fifth of the EU greenhouse gas emissions and it is the only sector with growing emissions. While the improvement of internal combustion engines still offers considerable potential for reducing emissions per kilometer driven, reductions in
37、greenhouse gas emissions over and above 50 % will require new technological solutions, such as the electric vehicle.Compared to conventional vehicles, and based on the current average European electricity supply, electric vehicles have 50 % less emissions. Further benefits can be achieved if the car
38、bon intensity of power generation continues to decrease with further greener and renewable energy sources.The electric car finally seems to be on the verge of breaking through, offering significant environmental benefits, especially in urban areas. There are, however, still some obstacles related to
39、 green electricity supply, the as yet expensive battery technology, the limited driving range and the need for a dense network of electric charging facilities. To overcome these obstacles, innovative business models are being developed to help transform automotive transport.14 / 15電動車:正在進行的綠色交通革命?隨著
40、世界上持續(xù)的能源危機,戰(zhàn)爭和石油消費以及汽車數(shù)量的增加,能 源日益減少,有一天它會消失得無影無蹤。石油并不是可再生資源。在石油 消耗枯竭之前必須找到一種能源與之替代。隨著科技的發(fā)展和社會進步,電 動車的發(fā)明將會有效的緩解這一燃眉之急。電動汽車將成為理想的交通工具。面臨能源成本居高不下、消費者和政府更加重視環(huán)境保護的情況下,世 界汽車制造商正加大對可替代能源性混合動力汽車技術(shù)的開發(fā)投資。該技術(shù) 能極大削減燃料消費,減少溫室氣體排放。許多人把目光投向了日本和美國 的汽車制造商,關(guān)心他們開發(fā)混合動力和電池電動車的進展情況。豐田普銳 斯一躍成為世界上銷量最好的混合動力車。美國的新興汽車制造商, Tes
41、la Motors ,推出了該公司首部電池電力車,名為 Tesla Roadster 。截至 2010 年 底,通用汽車公司計劃推出備受贊譽的 Volt 混合動力汽車,而克萊斯勒公司 最近已經(jīng)宣布同樣的計劃正在進行之中。目前,中國在新能源汽車的自主創(chuàng)新過程中,堅持了政府支持,以核心 技術(shù)、關(guān)鍵部件和系統(tǒng)集成為重點的原則,確立了以混合電動汽車、純電動 汽車、燃料電池汽車為“三縱” ,以整車控制系統(tǒng)、電機驅(qū)動系統(tǒng)、動力蓄電 池/ 燃料電池為“三橫”的研發(fā)布局,通過產(chǎn)學研緊密合作,中國混合動力汽 車的自主創(chuàng)新取得了重大進展。形成了具有完全自主知識產(chǎn)權(quán)的動力系統(tǒng)技 術(shù)平臺,建立了混合動力汽車技術(shù)開發(fā)體
42、系。 混合動力汽車的核心是電池 (包 括電池管理系統(tǒng))技術(shù)。除此之外,還包括發(fā)動機技術(shù)、電機控制技術(shù)、整 車控制技術(shù)等,發(fā)動機和電機之間動力的轉(zhuǎn)換和銜接也是重點。從目前情況 來看,中國已經(jīng)建立起了混合動力汽車動力系統(tǒng)技術(shù)平臺和產(chǎn)學研合作研發(fā) 體系,取得了一系列突破性成果, 為整車開發(fā)奠定了堅實的基礎(chǔ)。 截止到 2009 年 1 月 31 日,在混合動力車輛技術(shù)領(lǐng)域,中國知識產(chǎn)權(quán)局受理并公開的中國 專利申請為 1116件。在 1116件專利申請中,發(fā)明為 782件(授權(quán)為 107件)、 實用新型為 334 件。同美國、日本、中國以及和其他國家一樣,歐洲的一部分國家也宣布了 關(guān)于采用推廣電動車的大
43、膽的計劃,包括財政激勵、資助電池和電動車的研 究、還有關(guān)于充電基礎(chǔ)設(shè)施的調(diào)配分布計劃。像倫敦和巴黎這樣的主要城市 已經(jīng)宣布了電動車共享系統(tǒng),而擁有大型自有車隊的公共管理部門和公司需 要采購電動車。與此同時,公用事業(yè)、汽車制造商、電池生產(chǎn)商和學者等共同參與發(fā)起 了如歐盟電動汽車工作隊和EpoS歐洲技術(shù)平臺的智能系統(tǒng)一體化等項目。協(xié)同歐洲投資銀行一起,歐盟委員會已經(jīng)推出了歐洲綠色汽車計劃,這 50 億歐元將部分地投入在電池和電動車的研究、開發(fā)、制造、以及示范項目 上。這一陣活動似乎表明,電動汽車最終將是一個重大突破。但是這次,它 會在這里停滯不前嗎?歷史告訴我們要謹慎。電動汽車早在 1883 年就
44、開始生 產(chǎn)了比內(nèi)燃機汽車早 52 年。然而, 1913年以后,內(nèi)燃機的大規(guī)模商業(yè)化 導致電動汽車快速下降。在過去幾十年里,嘗試重新引入電動汽車的努力大 部分未獲成功,它們?nèi)匀淮硪粋€非常小的利基市場。電動汽車未來發(fā)展的重大問題之一是電池性能的改良速度。釵電池嚴重 限制了電動汽車的性能, 因為相比內(nèi)燃機汽車, 釵電池為整個汽車平添了 220 公斤的重量。當今的大多數(shù)客用汽車都在城市行駛,因此在通常情況下路途 較短、速度較慢,所以這一問題似乎并不像歐美等其他市場那樣嚴峻,因為 那里的平均行駛路程更長,最高速度也更快。電動汽車技術(shù)的持續(xù)研發(fā)正大 幅改善著汽車的性能。美國 A123Systems 公司
45、,世界最大的高能釵電池生產(chǎn) 商之一,宣布汽車每次充電后,電池能夠驅(qū)動汽車行駛 200 公里。東芝公司 最近也宣布正式推出超級充電電池, 而這種電池在 j 分鐘以內(nèi)就可以充滿 90% 的電量。但是今天,未來看起來更加光明:電池技術(shù)已經(jīng)取得許多重大進展,電 動車有望在未來幾年內(nèi)大規(guī)模重新進入市場?;谶m度增長情況的假定,到 2050 年,電動車會在新銷售額中占有超過 60的比例,并構(gòu)成 25的全球汽 車車隊。不過,由于現(xiàn)在還有一些相關(guān)技術(shù)開發(fā)和未來消費者行為的不確定 性,對未來部署規(guī)模的估計會有很大變動。電動汽車的一大好處是減少排放到大氣中的溫室氣體。當我們計算可替代能源動力汽車技術(shù)的碳減排總量時
46、,不僅計算機車排放的C02總量,而且還包括機車在整個生命周期的排放數(shù)量,從發(fā)電直到燃料運輸時產(chǎn)生的 CO2 排放都包含在其中。2008年 8月,麥肯錫全球團隊研究了北美、歐洲、中國和印度的乘用車 行業(yè)。團隊基于現(xiàn)有技術(shù)和商業(yè)運行可行性選取并研究了四種可替代能源汽 車技術(shù)。他們通過與傳統(tǒng)的消耗汽油或柴油的內(nèi)燃機 (ICE) 汽車進行對比。改良型汽油和朱油動力汽車 :傳統(tǒng)內(nèi)燃機 (ycE) 汽車采用了減排技術(shù),如 采用有助于引擎高效燃油的可變換閥門控制、通過降低摩擦節(jié)約燃料的低滾 動阻力輪胎。改良型內(nèi)燃機動力汽車在其生命周期中可能減少51%的碳排放量。全混合動力汽車 : 全混合動力汽車主要消耗汽油,而在加速時以電池驅(qū) 動。汽車的動力來源主要依靠內(nèi)燃機。再加上上述內(nèi)燃機改進技術(shù),全混合 動力汽車在其生命周期中可能減少 50%的碳排放量。壓縮天然氣(CNG汽車:壓縮天然氣汽車一般被認為是米用清潔能源的車 型,但在其生命周期中的碳減排空間完全取決于天然氣來源天然氣運輸 距離越
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