关于汽车的论文1500字英文翻译

The lighter drive 更轻便的驾驶理念Electric cars made from carbon fibre will be safer and go farther 电瓶汽车+碳纤维材料=安全，耐用They look safe in thereMARK WEBBER has a lot to thank tiny strands of carbon When his Formula 1 car cartwheeled in a spectacular 306kph (190mph) crash at the recent Valencia Grand Prix， what helped him to escape unscathed was the immensely strong carbon-fibre “tub” that racing drivers now sit Carbon fibre is an expensive alternative to making things in steel or aluminium， but besides being extremely strong it is also very It is found in high-performance parts， like aircraft wings， bits of supercars and the frames of pricey mountain But if work by Germany’s BMW proves successful， it could also become the material of choice to mass-produce electric 6月，F1瓦伦西亚大奖赛发生了惊人一幕：以每小时306公里（190英里）行驶在赛道上的马克�6�1韦伯发生了严重的翻车事故。奇迹的是，韦伯本人毫发无伤。奥妙之处就在于当下流行于F1的——碳纤维底座。虽然与铁，铝相比，它的造价较高，但是抗压及轻便性都远远好于铁和铝。目前，炭纤维材料还大多使用在高精度领域，如飞机机翼，F1赛车，或是私人山地车等。不过这一传统观念可能会被宝马公司打破，一旦试验成功，那么碳纤维就可以率先广泛应用在电动汽车领域。The Bavarian carmaker plans to launch a new plug-in electric car in It will be one of the first designed from scratch to use an electric motor rather than being converted from an existing Reducing the weight of this four-seater car， known as the Megacity concept， will be crucial to improving its performance and So BMW is planning to use no steel at The Megacity will be built as two modules: an aluminium chassis will contain the electric drive-system and battery， and a body made almost entirely of carbon fibre will be fitted onto 德国汽车制造商正计划将在2013年推出一款电瓶可拆卸式环保车。这并不是从现有车型改装而来，而是设计师卧薪尝胆的一次全新尝试。更轻便的4人坐驾，完全符合现代城市环保理念，这款“无铁”车型的设计，彰显出了它的与众不同与理念上的更新换代。但是这样一个设想目前还处在起步阶段，或许成功的那天，汽车铝制底盘上充电驾驶装置与设备，及全身碳纤维的设计工艺，能够更好的诠释大城市的环保概念。Carbon fibre is 30% lighter than aluminium and 50% lighter than The fibres are extremely tear- When woven into a lattice structure and impregnated with resin they can produce a part that is stronger than The trouble is the process is labour-intensive and slow， not least because components may have to be cured for hours under pressure in massive ovens called For carmakers， used to stamping out steel body-parts in a few seconds， this has ruled out carbon fibre for high-volume BMW， however， aims to change 碳纤维比铝轻便30%，是铁的50%。同时，由于纤维具有极强的抗断裂性，再融入树脂形成晶体结构后，那么它的强度就要超过铁。但是这道工序属于劳动密集型，效率相对较低，以前车用铁制品的切割仅需要几秒钟时间就能完成，而现在则需要在高压炉内高温锻造几个小时，因此，大量生产碳纤维的可能性不高。不过，宝马公司目前也正在试图改变这一情况。Its production line starts with a so-called precursor: a fibre spun from a This is carbonised by heating it in multiple stages to leave individual carbon fibres just seven microns (007 millimetres) Around 50，000 of these fibres are bundled together into a yarn which is then made into a This can be cut and handled like a Strips of fabric are then overlaid to align their fibres in such a way to maximise their load-bearing characteristics as required—in effect tailoring components like a bespoke 现在，宝马生产线守开先河，将聚合体加工成纤维状，这个碳化过程需要在高温下进行几道工序，最后产生的碳纤维厚度只有7微米（007毫米）。然后，大概将5000根这样的纤维拧成一股就成了纤维织物，再将这样的纤维根据它的陌生能力将它切割成最合适的尺寸，实际上，这个步骤与量体裁衣有异曲同工之妙。Along come the robots 自动机将助一臂之力BMW uses molds， heat and pressure to produce contours in the Resin is then injected into the molds to bond the fibres How the resin flows through the fibres is crucial; it has to be done quickly and leave no area untreated before it starts to A release agent in the resin migrates to the surface to prevent the component sticking in the The whole process， which can be handled by robots， is completed in 然后，再利用模具与高温将纤维织物打造成型。首先，将树脂注入模具粘合纤维，这里有两个细节非常关键，一是动作要快不能拖泥带水，二是在没有粘合之前确保模具内的树脂流向均匀。树脂中混有的隔离剂此时发挥功效，避免了纤维与模具发生粘连。整道工序，在自动仪器的协助下，仅需几分钟便可完成。The resulting carbon-fibre parts are bonded together to construct the body of the Besides their lightness， BMW’s experimental vehicles have exceeded expectations in crash tests， says the During front- and rear-impact-tests the aluminium chassis crumples to absorb energy， but leaves the rigid carbon-fibre passenger compartment Even extreme side-impacts protected the crash dummies and the battery (automatically switched off when the airbags trigger) In many cases crash damage is reparable by cutting out broken sections of carbon fibre and bonding in new 此时的碳纤维就可以应用于汽车制造。宝马公司声称：除了超轻便的特性之外，碳纤维的抗挤压能力也令人惊叹。在对车头车尾抗冲击测试中发现，一方面是铝制底盘受到挤压而变形，缓冲了部分能量，而坚硬的碳纤维能够保证车身安然无恙。即使是侧面来的强力冲击，也能够有效保护车厢内假人模型及电瓶毫发无伤（当然，气囊装置启动电瓶能够自动断电）。即便是车身有所受损，也不用担心，切割掉受损部分再粘合上新部件，完全可以让车体恢复原状。At some point， however， carbon-fibre cars will be Steel and aluminium is easy to recycle， but carbon fibre is Carmakers are working with aerospace firms on ways to do BMW has pioneered a process to reuse offcuts by breaking them up with heat to turn them back into raw This can be used to make composites with about half the strength of new carbon 铝的回收再利用技术已经非常成熟，但是从某角度来说，碳纤维这方面的技术还有待研究。目前，制造商正和宇宙空间机构合作，试图填补这一空白。眼下，处理碳纤维“边脚料”最先进的方法还是来自宝马公司，他们通过高温分解，能够使之退回成未加工状态。通过此种方法生产出的复合材料也具有碳纤维一半的硬度。Another advantage of a carbon-fibre body is that it will not So， apart from the battery wearing out in ten years or so， electric cars could last for decades (electric motors need little servicing) This will make it even harder for car designers to persuade those driving electrically to trade in their rustless， tough-as-old-boots vehicles for a new 碳纤维的另一优势在于不易腐蚀，如果不考虑电瓶10年左右的使用寿命，这种碳纤维电瓶汽车可以使用长达几十年（当然马达还是需要检修的）。与结实耐穿的靴子让人不忍丢弃一样，当设计理念再有突飞猛进的发展时，如何让使用者放弃碳纤维电瓶汽车，设计者可要好好动一番脑筋喽。英文附带汉语拼音，希望对你有所帮助。

Airbag works A typical air bag system consists of two components: collision detection ignition device (or sensor)， air bag gas generator (or air bag) When the sensor activated switch， the control circuit is in working condition began and by the detection circuit to determine whether he has the collision If the signals from two sensors simultaneously， then the role will be to start the Generator and battery as the car in front is usually easy to damage the site， therefore， airbag control system are equipped with their own power to ensure that the role In determining the conditions of cast right after the airbag， the control circuit current will be sent to ignition， by rapid transient heating， the propellant containing sodium nitride In the near-explosive chemical reaction occurs rapidly at the same time， will produce much sound to nitrogen-based gas， the balloon inflated to the full state， and by a strong impact， air bags can be washed on the steering wheel cover and open fully expanded to protect the drivers head from At the same time in the process of burning propellant， ignition assy in cooled metal mesh cover can be rapid expansion of the gas， then a small balloon may be well designed exhaust vents to play gradually buffering function and to avoid the body continues hinder the move of sight after the Need of special note is the only sensor to meet certain conditions it will Airbag sensor there are many， in part， or leveraged by pendulum switch， there is the spring loaded wheel-style， in addition to products with mercury But whatever type of sensor switch， must have sufficient impact force to make switch start， while the impact force must come from the positive direction C Usually the impact force is about equal to the speed of 25-50 km around the results generated by the collision When the car by this high-speed collision， installed in the vehicle front collision sensors and the central fitted in the car safety sensors can detect the sudden deceleration speed， and this signal is passed to the airbag system， the rapid control of the computer， the computer through the analysis confirmed only after we set off airbags electric hot bag of firearms， so that a rapid expansion of air It has been calculated to be formal airbags a car crash in 01 seconds after the start of work within the microprocessor， 03 seconds， ignition start， 05 seconds， high pressure gas into air bags， 08 seconds out balloon inflated balloon within 11 seconds completely swollen， at the moment， the drivers will hit the air Visible， open or not with the impact airbag angle and impact velocity have the general turn in the car， minor collisions， side impact or rear collision， the airbags will not open， such as upgraded version of the Santana 2000 car around the front less than 30 degrees are only open when the airbag Another point， in terms of impact velocity Duiyu， airbag system in the determination of the reduction of striking speed of the vehicle is， therefore， in security， collision experiment， generally are not so Che straight Di Yi Dong and can not hit the Qiangshang Bianxing

The society entered the information network time， the people no longer satisfy to the automobile request one kind of riding instead of walking tool， hoped the automobile is the life and the operating region one kind extends， on automobile on elephant in own office and family same work and At the same time， the automobile computerization also day by day rapidly develops， was considered is in an automobile technological development advancement revolution， the automobile computerization degree is weighs by regarding as the modern automobile level the important But along with the computer technology， the communication technology， the integrated circuit technology rapid development， take the numeral field bus as representative's scene measuring appliance， the equipment massive applications， a tedious scene segment bed sheet succinct field bus network replaces， the signaling quality also greatly enhances， the automobile also starts to march into the network In the near ten years， the user regarding automobile comfortableness， the security as well as the environmental protection and so on each performance request enhances In order to meet the need which these increase day by day， on the automobile the computer controls the electronic electric appliance equipment sharp growth， causes the automobile (is specially passenger vehicle) designs the electric appliance line arrangement to be more and more In addition， because because on the automobile each kind of electronic electric appliance meets the point insertion quantity along with it sharp increase， in the automobile travel process meets the point insertion the breakdown to create on the automobile the electronic electric appliance equipment malfunction question to be more and more In order to solve the above problem， very many new vehicle types (are specially upscale vehicle type) in the development starts widely to apply the computer network This article introduced the computer network technology in the automobile the application basic principle， elaborated the networking in the automobile interior and exterior application situation， introduced the automobile interior network characteristic and the automobile interior network standard， with emphasis narrated the control confined network CAN principal characteristic and the According to the automobile driving quality function influence division， may the automobile electronic products induction be two kinds: One kind is the automobile electronic control， including engine， chassis， automobile body electronic One kind is the vehicle carries the automobile electronic installation， including the automobile information system， the guidance system， the automobile sound and the television entertainment system， the vehicle carries the communications system， the surfer equipment and so Keywords: automotive， computer networks， local area network control， network standards

呵呵 3000字 20分说真的兄弟，20元都没有人帮你搞，还带翻译，没一天都搞不出来可能给某些机构或者个人200元就有可能

关于汽车的论文2000字开头英文翻译

呵呵 3000字 20分说真的兄弟，20元都没有人帮你搞，还带翻译，没一天都搞不出来可能给某些机构或者个人200元就有可能

让你同学帮你在一些高校的图书馆里找，那里都有电子档的

不是论文吧到网站找下就可以了'里面的教育联盟里面有，你去看下

With the entry of informative network times is comimg， people are not simply satisfied with Atuo as the means of walking replacement， but to expect it can be closely related life to work， just as we work in the office or at home while we take the Meanwhile， Auto electronic rapid developing is regarded as the revolution of Auto technology E-vehicle developing level is one of the key points to measure modern auto Followed the rapid development of comupter， telecommunication and integrated circuit technology， the typified digital field bus of field instrument and other related instruments widely used， and the complicated live link are replaced by simple live network link， the quality of signal transmission becomes much better than before， so that Auto gradually enters internet In reccent decade， customers have higher quality on comfort， security， eco-friendliness of A To meet these increasing demands， many electronic equipment controlled by computer is sharpely increasing in Auto， as a result of line connection becomes more difficult in Auto， especially in Besides， the quantity of electronic line point shows Inevitably it’ll has some troubles or blocks in So that many new model or high-level model auto is using network technology in the process of research to solve these This essay talks about how network is used in inner and outer auto， refering to the characteristic and standard of inner network used in A While the key point is to emphasise on the main features and using of controlling local area According to driving performance， auto electronic products could be classified as followings: one is Auto electronic control devices， including engine， chassis and body electronic The other is car electronic devices， including motor vehicle information systems， navigation systems， car audio and video entertainment systems， automotive communications systems， internet equipment

关于汽车的论文10000字开头英文翻译

让你同学帮你在一些高校的图书馆里找，那里都有电子档的

Diesel vehicles Diesel vehicles may be making a Diesel engines are more powerful and fuel-efficient than similar-sized gasoline engines (about 30-35% more fuel efficient) Plus， today's diesel vehicles are much improved over diesels of the Better Performance Improved fuel injection and electronic engine control technologies have Increased power Improved acceleration Increased efficiency New engine designs， along with noise- and vibration-damping technologies， have made them quieter and Cold-weather starting has been improved Cleaner Today's diesels must meet the same emissions standards as gasoline vehicles， and advances in engine technologies， ultra-low sulfur diesel fuel， and improved exhaust treatment have made this Although emissions of particulates and smog-forming nitrogen oxides (NOx) are still relatively high， new "clean" diesel fuels， such as ultra-low sulfur diesel and biodiesel， and advances in emission control technologies will reduce these pollutants Hybrid-electric vehicles; Hybrid-electric vehicles (HEVs) combine the benefits of gasoline engines and electric motors and can be configured to obtain different objectives， such as improved fuel economy， increased power， or additional auxiliary power for electronic devices and power Some of the advanced technologies typically used by hybrids include Regenerative B The electric motor applies resistance to the drivetrain causing the wheels to slow In return， the energy from the wheels turns the motor， which functions as a generator， converting energy normally wasted during coasting and braking into electricity， which is stored in a battery until needed by the electric Electric Motor Drive/A The electric motor provides additional power to assist the engine in accelerating， passing， or hill This allows a smaller， more efficient engine to be In some vehicles， the motor alone provides power for low-speed driving conditions where internal combustion engines are least Automatic Start/S Automatically shuts off the engine when the vehicle comes to a stop and restarts it when the accelerator is This prevents wasted energy from Flexible fuel vehicles (FFVs) Flexible fuel vehicles (FFVs) are designed to run on gasoline or a blend of up to 85% ethanol (E85) Except for a few engine and fuel system modifications， they are identical to gasoline-only FFVs have been produced since the 1980s， and dozens of models are currently Since FFVs look just like gasoline-only models， you may have an FFV and not even know To determine if your vehicle is an FFV， check the inside of your car's fuel filler door for an identification sticker or consult your owner’s FFVs experience no loss in performance when operating on E However， since a gallon of ethanol contains less energy than a gallon of gasoline， FFVs typically get about 20-30% fewer miles per gallon when fueled with E Electric vehicles (EVs) Electric vehicles (EVs) are propelled by an electric motor (or motors) powered by rechargeable battery Electric motors have several advantages over internal combustion engines (ICEs): Energy Electric motors convert 75% of the chemical energy from the batteries to power the wheels—internal combustion engines (ICEs) only convert 20% of the energy stored in Environmentally EVs emit no tailpipe pollutants， although the power plant producing the electricity may emit Electricity from nuclear-， hydro-， solar-， or wind-powered plants causes no air Reduce energy Electricity is a domestic energy Performance Electric motors provide quiet， smooth operation and stronger acceleration and require less maintenance than ICE The Down Side: Batteries EVs face significant battery-related challenges: Driving Most EVs can only go 150 miles (or less) before recharging—gasoline vehicles can go over 300 miles before Recharge Fully recharging the battery pack can take 4 to 8 Battery cost: The large battery packs are expensive and usually must be replaced one or more Bulk & weight: Battery packs are heavy and take up considerable vehicle Researchers are working on improved battery technologies to increase driving range and decrease recharging time， replacement frequency， weight， and These factors will ultimately determine the future of EV 翻译没找到~~~~~~

关于汽车的论文2000字开头英语翻译

呵呵 3000字 20分说真的兄弟，20元都没有人帮你搞，还带翻译，没一天都搞不出来可能给某些机构或者个人200元就有可能

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多了打不下，自己扩充一下。Isn't it great when a plan comes together? A few months ago Beijing was fretting about an apparent collapse in demand for Muted sales data – sales of passenger cars fell 35 per cent between March and August – suggested that China would be lucky to get anywhere near its target of shifting 10m vehicles in Some pretty blunt instruments later – tax cuts and subsidies for smaller vehicles – and autos are flying off the With 7m new vehicles shifted in the first quarter (up 4 per cent year on year)， China has zoomed past the US (2m， down 38 per cent) as the world's largest At that run rate， Beijing will beat its 2009 target by early D No wonder this week's Shanghai auto show is more festive than equivalent events in the west， which are being scaled back or canned But delegates should keep some champagne on Automakers are not necessarily looking at better profits: minivans mean mini- Sales of vehicles with bigger engines are falling， as they are everywhere This year's overall improvement in sales is almost certainly linked to rampant credit growth， which the banking regulator last week said it was looking to And the industry continues to grapple with structural demand Take cars: sales growth averaged about 40 per cent a year in the six years to 2008， when annual growth slipped to 7 per Even with the punchy start， 2009 is set for about 5 per cent， estimates C For a country with third-world penetration – 32 cars per 1，000 people in 2007 (compared with 800 in the US) – that kind of growth is hardly Chinese savings rates are among the highest in the world， implying huge potential for But as Morgan Stanley points out， given off-book liabilities such as retirement， healthcare and education， the average consumer is practically in negative In spite of Beijing's inducements， households may continue to prioritise these invisible debts over a new set of 一项计划的出台不是很棒吗？几个月前，中国政府为汽车需求锐减而烦恼不已。从去年3月至8月，乘用车销量减少了35%。疲软的销售数据表明，中国要是能接近实现2009年销售汽车1000万辆的目标就算走运了。采取了一些相当直接的措施（对小排量汽车下调购置税并提供补贴）后，汽车销量急速上升。今年第一季度中国新车销量达270万辆，同比增加4%，超越美国（220万辆，同比减少38%）成为世界第一大汽车销售市场。以这种增长速度，中国政府在12月初就能完成2009年的目标。难怪与西方规模缩减或压缩在一起举行的同类展会相比，本周的上海车展更具节日的欢乐气氛。但参展代表们先别忙开香槟庆祝。汽车制造商不一定能实现更多利润：微型车意味着微利。和世界其它地区一样，大排量汽车的销量正在减少。今年销量的总体改善几乎必定与信贷的高速增长有关——中国银行业监管部门上周已表示将注意控制。而汽车制造业还要继续努力解决结构性需求问题。以轿车为例：截至2008年的6年里，轿车销量以每年40%的平均速度增长，但2008年放缓至7%。虽然开局有力，但据花旗(Citi)估计，2009年汽车销量增幅可能在5%左右。对于一个汽车普及率仅为第三世界水平的国家——2007年，每千人拥有32辆汽车，而美国每千人拥有800辆——这种增长根本算不上惊人。中国的储蓄率位居世界前列，意味着巨大的消费潜能。但正如摩根士丹利(Morgan Stanley)指出的那样，如果考虑到退休、医疗和教育等账外债务，中国普通消费者实际上是负资产。因此，尽管中国政府采取了一系列刺激措施，但与购置新车相比，老百姓可能还是会优先考虑那些无形的债务负担。

Electronic brakeforce distribution or EBD or EBFD is an automobile brake technology that automatically varies the amount of force applied to each of a vehicle's brakes， based on road conditions， speed， loading， Always coupled with anti-lock braking systems， EBD can apply more or less braking pressure to each wheel in order to maximize stopping power whilst maintaining vehicular [1][2] Typically， the front end carries the most weight and EBD distributes less braking pressure to the rear brakes so the rear brakes do not lock up and cause a [3]How ABS worksUnder heavy braking， vehicle wheels may lock- The anti-lock braking system (ABS) monitors wheel speeds and releases pressure on individual wheel brake lines， rapidly pulsing individual brakes to prevent lock- During heavy braking， preventing wheel lock-up helps the driver maintain steering Modern ABS has four individual brake lines for each wheel， enabling different braking pressure on different road For example， less braking pressure is needed to lock a wheel on ice than a wheel which on bare If the left wheels are on asphalt and the right wheels are on ice， during an emergency stop， ABS detects the right wheels about to lock and reduces braking force on the right wheels， helping to avoid lock-up and loss of vehicle How EBD worksAs per SAE technical paper #920646 - Buschmann et "The job of the EBD as a subsystem of the ABS system is to control the effective adhesion utilization by the rear The pressure of the rear wheels is approximated to the ideal brake force distribution in a partial braking To do so， the conventional brake design is modified in the direction of rear axle overbraking， and the components of the ABS are EBD reduces the strain on the hydraulic brake force proportioning valve in the EBD optimizes the brake design with regard to: adhesion utilization; driving stability; wear; temperature stress; and pedal "EBD may work in conjunction with ABS and Electronic Stability Control ("ESC") to minimize yaw accelerations during ESC compares steering wheel angle to vehicle turning rate using a yaw rate "Yaw" is the vehicle's rotation around its vertical center of gravity (turning left or right) If the yaw sensor detects more/less yaw than the steering wheel angle should create， the car is understeering or oversteering and ESC activates one of the front or rear brakes to rotate the car back into its intended For example， if a car is making a left turn and begins to understeer (the car plows forward to the outside of the turn) ESC activates the left rear brake， which will help turn the car The sensors are so sensitive， and the actuation is so quick that the system may correct direction before the driver ABS helps prevent wheel lock-up and EBD helps apply appropriate brake force to make ESC work

关于汽车的论文1500字英文

Cars in America(美国的汽车)Cars in AmericaCars are an important part of lifein the United S The car made the UnitedStatesanationon Andit helped to make the United States what it is There are three main reasons why the car became so popular in the United S First of all the country is a huge one and Americans like to move around in The cars provide the most comfortable and cheapest form of The second reason that cars are popular is the fact that the United States never really developed an efficient and inexpensive form of public Long-distance trains have never been as common in the United States as they are in other parts of the Nowadays there is a good system of air service provided by But it is too expensive to be used The third reason is the most important one， The American spirit of independence is what really made cars Americans don't like to wait for a bus， or a train or even a They don't like to have to follow an exact And the freedom a car gives them is what Americans want most to The decrease of gas supplies has caused a big problem for A But the answer will not be a bigger system of public The real solution will have to be a new kind of car， one that does not use so much

-- Scott Perl， Albuquerque， NM A: Auto racers have told us the main advantage in filling tires with nitrogen instead of ambient air is that nitrogen tends to maintain more consistent tire pressure over a wide range of As friction between the tire and pavement drives up the temperature， air with varying amounts of moisture content responds differently and can cause inconsistencies in tire While racing drivers are more likely to notice the advantages of nitrogen than everyday drivers， we haven't heard of any disadvantages to using Skeptics question the practice， noting that ambient air is about 80% nitrogen and that it expands and contracts at the same rate as pure A number of readers say there's no appreciable difference in how the tires will react if filled with nitrogen， especially in everyday Q: Is it safe to use cruise control in rain or on wet pavement? -- Scott Brake， Westminster， C A: Car makers often warn that cruise control should be used only in light traffic on open roads and in good There have been reports of accidents involving cruise control when the car lost traction -- or hydroplaned -- in slippery Some car makers warn that the steady throttle of cruise control -- like keeping one's foot on the gas -- could cause the wheels to spin when they hit a wet or icy patch of Car-company representatives say the cruise- control warnings reflect the fact that drivers should be particularly vigilant when conditions are less than ideal， and cruising along on what amounts to partial autopilot tends to lull some drivers into a false sense of Q: If an automobile manual suggests a certain weight oil (such as， 5W-30)， would adding a quart of a different weight oil (say， 10W-40) between complete oil changes damage the car's engine? -- Gil Ehrenkranz， Potomac， M A: Probably But today's engines generally are more precisely engineered than those of 20 or 30 years Many of us at some point have topped off our cars with whatever oil happened to be available without causing damage -- at least not that we know Auto makers， however， say modern engines can be more sensitive to a change in oil weight， and using the wrong oil， even in small amounts， can hurt an engine's performance and even cause Q: What is a sequential manual transmission? How does it differ from an automatic or a standard manual transmission? -- Harry J Jaffe， Germantown， T A: A sequential manual transmission is a gearbox that requires gear changes to be made in order (first to second to third)， instead of having a shift pattern with a lever that allows the driver to skip Motorcycles have used such transmissions for decades and racing cars began using them years ago because they allow quicker Shifting is usually done through levers， buttons or The sequential transmissions advertised today -- mainly in high- performance cars such as Ferraris， Aston Martins and some BMWs -- are technically manual transmissions， except that the clutch and the gear changes are controlled The advantage is that gear changes can be made more quickly and precisely than a human shifting the old-fashioned Traditionalists say the downside is that they simply aren't as much fun to drive and require less driver

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