什么是双离合变速箱？

　　What is a dual clutch transmission?

　　双离合变速器顾名思义，双离合变速器的技术关键就在于双离合，也就是有两个离合器，其中一个负责奇数档（1、3、5、7挡），另一个离合器负责偶数档（2、4、6挡）。可以想象为将两台手动变速箱的功能合二为一，并建立在单一的系统内，它没有液力变矩器也没有行星齿轮组。从齿轮部分乍一看很像一台手动变速器，因为它有同步器，但不同的是它用“双”离合器控制与发动机动力的通断，这两台自动控制的离合器，由电子控制及液压推动，能同时控制两组离合器的运作。

　　As the name suggests, the key technology of dual clutch transmission lies in dual clutch, which means there are two clutches, one of which is responsible for odd gears (1, 3, 5, 7), and the other clutch is responsible for even gears (2, 4, 6). It can be imagined as combining the functions of two manual transmissions and building them into a single system, without a hydraulic torque converter or planetary gear set. At first glance from the gear section, it looks like a manual transmission because it has synchronizers, but the difference is that it uses "dual" clutches to control the on/off of the engine power. These two automatically controlled clutches are electronically controlled and hydraulically driven, and can simultaneously control the operation of two sets of clutches.

　　双离合变速器(Dual Clutch Transmission) DCT有别于一般的自动变速器系统，它基于手动变速器而又不是自动变速器，除了拥有手动变速器的灵活性及自动变速器的舒适性外，还能提供无间断的动力输出。而传统的手动变速器使用一台离合器，当换挡时，驾驶员须踩下离合器踏板，使不同挡的齿轮做出啮合动作，而动力就在换挡期间出现间断，令输出表现有所断续。

　　The Dual Clutch Transmission (DCT) is different from typical automatic transmission systems in that it is based on a manual transmission rather than an automatic transmission. In addition to the flexibility of a manual transmission and the comfort of an automatic transmission, it can also provide uninterrupted power output. Traditional manual transmissions, on the other hand, use a clutch. When shifting gears, the driver must press the clutch pedal to engage the gears of different gears, resulting in intermittent power output during the shifting process.

　　当前越来比较多的车型基本都使用了双离合变速箱，双离合变速箱有它自己的优点，也有缺点。但尽管骂声一片，非常多车企還是坚持使用。那么国内车企为何如此热爱使用双离合变速箱？

　　More and more car models currently use dual clutch transmissions, which have their own advantages and disadvantages. Despite widespread criticism, many car companies still insist on using it. So why do domestic car companies love using dual clutch transmissions so much?

　　下面和汽车小编一块来看一下双离合变速箱利弊吧。

　　Let's take a look at the pros and cons of dual clutch transmissions with the automotive editor.

　　正是因为双离合变速箱有着这种先天优势，各大厂家即便困难重重也必须想方设法去攻克技术难关，研发自己的双离合变速箱，这其中就包含自主品牌。双离合变速箱利弊是什么不管你是加速還是减速，在离合器下基本都已经预备好为你上下移动，所以当你在踩刹车后，需要立即加速，踩油门，发觉发动机加速，但沒有动力。同样，这两种状况也会严重关系双离合器的寿命。良好的做法是抬开刹车并滑行一段距离，然后进而开始加速油门。特别是拥塞道路，能把挂S档（S档时，发动机转速更高才会升档）或切换手动模式1档，防止走走停停1、2档之间太频繁的切换，变速箱过热。尽最大限度走一段停一段，不用半联动蠕行，假如插队的太多那也没法了。还有一类变速箱,如菲亚特，当你刹车踩到底的时候，离合不会切断动力，会一直结合，这就好比手动挡沒有踩下离合并且还挂着档一样，这么会把变速箱给“憋”坏的，因而这类变速箱当你等红绿灯或堵车时间超过5秒那么提倡挂到空档。我身边就有这么的朋友，原来他不清楚双离合是这状况，然后直接把变速箱开报废了，还好在保修期内，厂家免费更換。

　　It is precisely because of the inherent advantages of dual clutch transmissions that major manufacturers must find ways to overcome technical difficulties and develop their own dual clutch transmissions, including domestic brands, even in the face of numerous challenges. What are the advantages and disadvantages of a dual clutch transmission? Regardless of whether you are accelerating or decelerating, the clutch is basically ready for you to move up and down. Therefore, when you step on the brake, you need to accelerate immediately. If you step on the accelerator, you may notice that the engine is accelerating but there is no power. Similarly, these two conditions will also seriously affect the lifespan of the dual clutch. A good practice is to lift the brake and slide for a distance, then start accelerating the accelerator. Especially on congested roads, it is possible to shift into S gear (when the engine speed is higher, it will upshift) or switch to manual mode 1 to prevent frequent switching between start stop 1 and 2 gears, which can cause the gearbox to overheat. Try to walk and stop as much as possible, without the need for semi coordinated crawling. If there are too many people cutting in line, it won't be possible. There is also a type of gearbox, such as Fiat. When you press the brake pedal to the bottom, the clutch will not cut off the power and will continue to engage. This is like a manual transmission without pressing the clutch and still in gear, which can damage the gearbox. Therefore, when you wait for traffic lights or traffic jams for more than 5 seconds, it is recommended to shift to neutral for this type of gearbox. I have a friend around me who was not aware of the condition of the dual clutch transmission, so he simply scrapped it. Fortunately, during the warranty period, the manufacturer replaced it for free.

　　双离合变速器优点双离合变速器的优势有以下几点：

　　The advantages of dual clutch transmission are as follows:

　　1. 换挡快。双离合变速器的换挡时间非常短，比手动变速箱的速度还要快，只有0.2秒不到。

　　1. Shift gears quickly. The shifting time of a dual clutch transmission is very short, even faster than that of a manual transmission, less than 0.2 seconds.

　　2. 省油。双离合变速器因为消除了扭矩的中断，也就是让发动机的动力一直在利用，而且始终在最佳的工作所以能够大量节省燃油。相比传统行星齿轮式自动变速箱更利于提升燃油经济性，油耗大约能够降低15%。

　　2. Fuel efficient. The dual clutch transmission can save a lot of fuel because it eliminates torque interruption, which means the engine's power is always being utilized and working at its best. Compared to traditional planetary gear automatic transmissions, it is more conducive to improving fuel economy, with fuel consumption reduced by approximately 15%.

　　3. 舒适性。因为换挡速度快，所以DCT的每次换挡都非常平顺，顿挫感已经小到了人体很难察觉的地步。

　　3. Comfort. Due to its fast shifting speed, DCT's gear shifts are very smooth every time, and the jerkiness is so small that it is difficult for the human body to detect.

　　4. 在换挡过程中，几乎没有扭矩损失。

　　During the shifting process, there is almost no torque loss.

　　5. 当高挡齿轮已处于预备状态时，升挡速度极快，达到惊人的8毫秒。

　　When the high gear is in standby mode, the upshift speed is extremely fast, reaching an astonishing 8 milliseconds.

　　6. 无论油门或者运转模式处于何种状况，换挡时间至少能达到600毫秒(从奇数挡降到奇数挡，或者从偶数挡降偶数挡时，耗时约为900毫秒，例如从第5挡降到3挡)。

　　6. Regardless of the throttle or operating mode, the shifting time should be at least 600 milliseconds (approximately 900 milliseconds when shifting from odd gear to odd gear, or from even gear to even gear, such as shifting from 5th gear to 3rd gear).

　　双离合变速器缺点1.成本问题。双离合变速器的结构复杂，制造工艺要求的也比较高，所以成本也是比较高的。所以我们看到配备双离合变速器的都是一些中高档的车型。

　　Disadvantages of dual clutch transmission: 1. Cost issue. The structure of dual clutch transmission is complex, and the manufacturing process requirements are relatively high, so the cost is also relatively high. So we see that vehicles equipped with dual clutch transmissions are mostly mid to high end models.

　　2.扭矩问题。虽然在可以承受的扭矩上，双离合变速箱已经绝对能满足一般的车辆的要求，但是对于激烈的使用还是不够。因为如果是干式的离合，则会产生太多的热量，而湿式的离合，摩擦力又会不够。

　　2. Torque issue. Although the dual clutch transmission can definitely meet the requirements of general vehicles in terms of tolerable torque, it is still not enough for intense use. Because if it is a dry clutch, it will generate too much heat, while a wet clutch will have insufficient friction.

　　3 .由于电控系统和液压系统的存在，双离合器变速箱的效率仍然不及传统手动变速箱，特别是用于传递大扭矩的湿式双离合器变速箱更是如此。

　　3 . Due to the presence of electronic and hydraulic systems, the efficiency of dual clutch transmissions is still inferior to traditional manual transmissions, especially wet dual clutch transmissions used for transmitting high torque.

　　4. 当需要切换的挡位并未处于预备状态时，换挡时间相对较长，在某些情况下甚至超过1秒。

　　When the gear to be switched is not in standby mode, the shifting time is relatively long, in some cases even exceeding 1 second.

　　5. 双离合器变速箱相比传统手动变速箱更重。

　　5. Dual clutch transmissions are heavier than traditional manual transmissions.

　　6. 早期的双离合器变速箱可靠性欠佳。随着汽车的发展双离合变速箱的缺点必定会越来越少，变得更加的完善。

　　Early dual clutch transmissions had poor reliability. With the development of automobiles, the disadvantages of dual clutch transmissions will inevitably become fewer and more perfect.

　　双离合变速箱的寿命受什么影响？

　　What affects the lifespan of a dual clutch transmission?

　　那首先从结构和原材料来讲，这个双离合变速箱呢它主要是双离合器、齿轮变速器、换挡执行机构、控制系统这么组在一起的。

　　Firstly, in terms of structure and raw materials, this dual clutch transmission is mainly composed of dual clutch, gear transmission, shift actuator, and control system.

　　原材料金属抗拉强度高，达到500兆帕

　　The tensile strength of the raw material metal is high, reaching 500 megapascals

　　最重要的零件呢是齿轮和轴承，它这个材料呢有很多，什么碳钢、合金钢、球墨铸铁、灰铸铁，那其中呢这个渗碳钢是作为变速箱的这个常用材料的。它这个金属抗拉强度可以达到500兆帕以上，这什么概念，就是用这个材料把它做成一个晾衣架，就横了一根杆子。你在这个晾衣架上面可以挂三台哈佛H6，然后这个晾衣架不会变形也不会断掉，就有这么高的那个强度。

　　The most important parts are gears and bearings, which are made of various materials such as carbon steel, alloy steel, ductile iron, and gray cast iron. Among them, carburizing steel is a commonly used material for gearboxes. The tensile strength of this metal can reach over 500 megapascals. The concept is to use this material to make it into a drying rack, with a horizontal pole. You can hang three Harvard H6s on this clothes rack, and this clothes rack will not deform or break, so it has such high strength.

　　原材料使用寿命在20年以上

　　The service life of raw materials is over 20 years

　　所以说按照设计寿命来说的话，基本上它是可以用20年以上的，那么就和我们车子的寿命算是相同了。那刚才讲的是强度，也就是够不够硬，还有一个呢就是耐不耐磨对吧。

　　So, in terms of design lifespan, it can basically last for more than 20 years, which is equivalent to the lifespan of our car. What I just talked about is strength, which means whether it is hard enough, and also whether it is durable or not, right.

　　原材料耐高温，可以忍受800-1000摄氏度

　　The raw materials are resistant to high temperatures and can withstand 800-1000 degrees Celsius

　　那么现在用的常见的摩擦部件呢都是粉末冶金材料，它是耐磨耐高温的，这种材料呢也是用在飞机的刹车片上的。那你想啊我们现在的这种民用飞机，着陆的速度基本上是200公里/小时，刹车一刹的话呢瞬时温度这个刹车片表面大概有800到1000摄氏度，所以从材料的角度来说的话大家放心好了。

　　So the common friction components used now are made of powder metallurgy materials, which are wear-resistant and high-temperature resistant. This material is also used on the brake pads of airplanes. Do you think about it? The landing speed of our current civilian aircraft is basically 200 kilometers per hour. When the brake is applied, the instantaneous temperature on the surface of the brake pad is about 800 to 1000 degrees Celsius. So from the perspective of materials, everyone can rest assured.

　　原材料能够承受高强度摩擦

　　Raw materials can withstand high-strength friction

　　这种军用民用的这种飞机，在800到1000摄氏度这个温度下，使用寿命都有100到500次了。那双离合摩擦片上面的这个工作环境温柔的多了，基本就是在150摄氏度以下，所以说这种会动的摩擦部件也可以和车子的寿命达到相同。

　　This military and civilian aircraft has a service life of 100 to 500 times at temperatures of 800 to 1000 degrees Celsius. The working environment on those clutch friction plates is much gentler, basically below 150 degrees Celsius, so this movable friction component can also achieve the same lifespan as the car.

　　变速箱的冷却方式延缓离合器磨损

　　Cooling method of gearbox delays clutch wear

　　那这里要补充一点，就是双离合变速箱它不是分为干式和湿式的嘛，基本的原理和构造上面的话，这个没什么太大差别，但是冷却方式上不同。这个湿式离合器，它是依靠这个变速箱油和其它油液浸泡来吸收能量把它带出去的，土话叫水冷，当然这个是油冷。那干式离合器就是通过风冷来散热的。

　　One thing to add here is that dual clutch transmissions are divided into dry and wet types. In terms of basic principles and structure, there is not much difference, but the cooling method is different. This wet clutch relies on the immersion of transmission oil and other fluids to absorb energy and carry it out. It is called water-cooled in local dialect, but of course it is oil cooled. The dry clutch dissipates heat through air cooling.

　　湿式离合器寿命比干式长

　　Wet clutch has a longer lifespan than dry clutch

　　那对离合器来说的话，有润滑液吸热，同时还可以减少磨损，所以寿命会更长。湿式双离合的这个摩擦部件的寿命，基本上是干式的5到6倍这个样子。所以说从材料、结构、技术这个角度来说的话，这个双离合变速箱用用和汽车的寿命基本上是一样的，汽车报废了说不定双离合变速箱还能用的。

　　For the clutch, lubricating fluid absorbs heat and reduces wear, resulting in a longer lifespan. The lifespan of this friction component in wet dual clutch transmission is basically 5 to 6 times that of dry transmission. So from the perspective of materials, structure, and technology, the lifespan of this dual clutch transmission is basically the same as that of a car. If the car is scrapped, the dual clutch transmission may still be usable.

　　哪些情况会影响双离合的寿命？

　　What situations can affect the lifespan of dual clutch transmission?

　　但是现在我们大多数人的印象当中双离合它其实很短命的，各种不好用，经常会出问题。这个呢主要还是因为生产技术和它的程序设置。那下面呢我就跟大家分享一下，我们的哪些行为，它会导致这个双离合变速箱提前折寿。

　　But now most of us have the impression that dual clutch transmission is actually very short-lived, difficult to use, and often has problems. This is mainly due to production technology and its program settings. Next, I will share with you which behaviors we have taken that may cause this dual clutch transmission to lose its lifespan prematurely.

　　长时间低速行驶加速双离合的磨损

　　Wear and tear of dual clutch during long-term low-speed driving acceleration

　　首先第一个的话呢就是长时间的低速行驶，堵车的时候慢慢地跟车，走走停停，这双离合呢一直就是处于这个半联动的状态。如果不是处于半联动状态呢就变成低档位是来回反复切换，这个磨损的加剧程度是非常大的，它让摩擦部件的寿命会快速的下降。就好像我们这个小碎步走路这个鞋底更容易被磨破对不对，脚也特别的酸，又费油又费变速箱。那这个堵车又不是我们说了算的对吧，无法避免的，这个路况就这样。

　　The first thing is to drive at low speed for a long time, slowly following the car in traffic, starting and stopping. This dual clutch system has always been in a semi linked state. If it is not in a semi linked state, it will switch back and forth to a low gear repeatedly, and the degree of wear will be very severe, which will rapidly reduce the service life of the friction components. It's like our little step walking, where the soles of our shoes are more easily worn out, right? Our feet are also particularly sore, and it consumes a lot of oil and gearbox. Then this traffic jam is not our the final say, right? It's unavoidable. This is the road condition.

　　减少停停走走的次数

　　Reduce the number of stops and walks

　　那我们自己可以做的事情呢，就是让前面的车子先稍微走一段，然后呢自己再慢慢的跟油跟上去，来减少我们这么停停走走的这种次数，增加每一次行驶的这个距离，相对的来说呢可以提高一定的双离合寿命。

　　What we can do ourselves is to let the car in front go for a while, and then slowly catch up with the gas to reduce the number of times we stop and move, increase the distance we travel each time, and relatively improve the service life of the dual clutch.

　　刹车踩不到底会加重双离合负担

　　Failure to fully apply the brakes will increase the burden on the dual clutch system

　　那还有一种比较伤车的做法呢，就是车子停在那边，你不挂P档不挂N档，就是一直D档，然后刹车踩在那边。因为这个踩在那边的话，离合器它还是处于半联动的这种状态。而且如果我们刹车不踩到底或者踩的比较轻，它很有可能因为我们的脚一抖，半联动、联动来回切换，其实已经潜移默化地做了好多回这样的动作了。

　　There is another way that can be quite damaging to the car, which is to park the car over there and not put it in P or N gear, just keep putting it in D gear and then press the brake on that side. Because if you step on that side, the clutch will still be in a semi linked state. And if we don't press the brakes to the bottom or press them lightly, it's very likely that our feet will shake and switch back and forth between semi linked and linked modes, which has already been done many times unconsciously.

　　长时间等待可以熄火或挂N档

　　Long wait can turn off the engine or shift to N gear

　　我们自己还没有这种感觉，这个时候对车子和双离合器的负担也是算比较大的。所以我建议各位朋友如果超过两分钟的等待，也不要一个脚就刹车那边踩在那边，也太酸，挂个N挡拉手刹就可以了，如果超过五分钟了，干脆挂个P档熄火好了。

　　We don't have this feeling ourselves yet, and the burden on the car and dual clutch is quite heavy at this time. So I suggest that if you wait for more than two minutes, don't just press the brake on the other side with one foot, it's too sour. Just shift to N gear and pull the handbrake. If it's more than five minutes, simply shift to P gear and turn off the engine.

　　换挡太快容易打齿轮

　　Shifting gears too quickly can easily cause gear breakage

　　那么除了刚才说的这两种情况之外，还有咧，比如说换挡太快，这个双离合的特点不就是换挡快吗？但我不是这个意思，是什么呢？就是我们往前面开，车子还没停稳，马上就挂成倒档；我们倒车的时候还没停稳，马上就挂在P档。

　　So besides the two situations mentioned earlier, what else is there? For example, if you shift gears too quickly, isn't the characteristic of this dual clutch system being fast shifting? But that's not what I meant, what is it? We drove forward, but before the car came to a complete stop, we immediately shifted into reverse gear; We didn't come to a complete stop when reversing, and immediately shifted into P gear.

　　变速箱的齿轮容易被打掉

　　The gears of the gearbox are prone to breakage

　　这个是很容易打齿轮的，而双离合变速箱的齿轮特别容易被打掉，这个是目前我们维修厂经常会发现的这一个情况。那后面几个不太会出现的，我就一笔带过跟大家讲一下。

　　This is easy to gear, and the gears of the dual clutch transmission are particularly prone to breakage, which is a common occurrence in our maintenance factory. I will briefly mention the later ones that are unlikely to appear.

　　还有哪些可能出现的问题？

　　What other potential issues may arise?

　　N挡滑行可能会烧坏变速箱

　　Coasting in N gear may burn out the gearbox

　　比如说是N挡滑行，现在自动挡挂N档滑行不但不省油，而且还有可能会烧坏变速箱。输出么转速很高，但是这个变速箱的这个油泵因为你挂在N档，这个油就供不上去或者叫供油不足，那散热就会差，润滑也会差，这时间一长就有可能引起这个变速箱的共振和打滑的现象，土话说呢就是烧掉了。

　　For example, when it comes to coasting in N gear, shifting from automatic to N gear not only saves fuel, but also has the potential to burn out the gearbox. The output speed is very high, but the oil pump of this gearbox cannot supply oil or supply insufficient oil because you are in N gear. This will result in poor heat dissipation and lubrication, which may cause resonance and slipping of the gearbox over time. In layman's terms, it may burn out.

　　拖车太快导致变速箱损伤

　　Trailing too fast causes damage to the gearbox

　　然后就是拖车救援，双离合变速器和其他车子不太一样，其他车子挂个空档选择一个拖车档，那直接绳子拖走就可以了。双离合你如果是熄火的时候挂在那个拖车档的话，你这个速度要有严格的限制，说明书有写，是很慢很慢的一个速度。如果稍微快一点的话，变速箱也有可能会产生这种损坏。那我比较建议搭载双离合变速箱的各位朋友们要救援的话，直接就是吊到板车上，然后板车拖走，不要原地这么「滋」在那边拉很容易出问题。

　　Then there's the trailer rescue. The dual clutch transmission is different from other cars. For other cars, if you put them in neutral and choose a trailer gear, you can simply tow them away with a rope. If you are in trailer gear with dual clutch transmission and the engine is turned off, there is a strict speed limit for you. The manual states that it is a very slow speed. If it is slightly faster, the gearbox may also suffer from such damage. I suggest that friends who are equipped with dual clutch transmissions should be rescued by simply lifting them onto a flatbed truck and then towing them away. Do not stay in place like this, as it can easily cause problems.

　　变速箱并不是终身免维护

　　The gearbox is not maintenance free for life

　　那么最后再来讲讲这个保养，其实和寿命有关系。很多朋友都觉得这个变速箱是终身免维护部件，其实并不是这样的。那么比这个误会更大的一个误会呢，就是很多朋友觉得干式双离合变速箱它是没有变速箱油的，它不是干式的吗，这个其实都不对。那这个保养手册上都会写的，变速箱油的保养更换周期。那干式双离合呢它是离合器摩擦不用油，其它地方还是需要有变速箱油来润滑的。? ? ? ? ?

　　So finally, let's talk about maintenance, which is actually related to lifespan. Many friends think that this gearbox is a lifelong maintenance free component, but in fact, it is not like that. So a bigger misunderstanding than this is that many friends think that a dry dual clutch transmission does not have transmission oil, isn't it dry? This is actually not true. It will be written in this maintenance manual about the maintenance and replacement cycle of transmission oil. What about dry dual clutch? It does not require oil for clutch friction, but transmission oil is still needed for lubrication in other areas.?  ? ?  ? ?

　　所以说这个双离合变速器好好的去保养维护还是非常有意义的。如何延长双离合寿命呢？

　　So it is very meaningful to maintain and upkeep this dual clutch transmission properly. How to extend the lifespan of dual clutch transmission?

　　1、避免长时间低速行驶堵车时的低速跟车蠕动可谓是双离合的一大噩梦，因为离合片一直处于半联动的状态，在1、2档间频繁换挡，会加剧磨合期片的磨损情况，使得寿命下降。因此，在低速跟车的情况下，可以把挂S档（S档时，发动机转速更高才会升档）或者切换手动模式1档，避免走走停停1、2档之间太频繁的切换，磨损严重，同时造成变速箱过热。

　　1. Avoiding low-speed creeping during long periods of traffic congestion can be a major nightmare for dual clutch transmission, as the clutch plates are always in a semi linked state. Frequent gear shifts between 1st and 2nd gears can exacerbate wear and tear during the break in period, leading to a decrease in lifespan. Therefore, when following at low speeds, you can shift to S gear (when the engine speed is higher, it will upshift) or switch to manual mode 1 to avoid frequent switching between start stop 1 and 2 gears, which can cause severe wear and tear and overheating of the gearbox.

　　2、合理利用好N挡变速箱挂D挡然后踩刹车时，会处于半联动状态，加大离合器片的损耗。如果在堵车情况时，尽量走一段然后停一段，避免一直挂D挡踩刹车，不要半联动蠕行，但如果插队的太多那也没法了。建议各位朋友如果超过一分钟的等待，也不要一个脚就刹车那边踩在那边，挂个N挡拉手刹就可以了，如果超过五分钟了，干脆挂个P档熄火。

　　2. Reasonably utilizing the N-gear transmission to shift to D gear and then applying the brake will result in a semi coupled state, increasing the wear and tear of the clutch plates. If you are stuck in traffic, try to walk for a while and then stop for a while, avoid constantly shifting to D gear and stepping on the brakes, and avoid semi linked creeping. However, if there are too many people cutting in line, it is also not possible. I suggest that if you wait for more than a minute, don't just press the brake on the other side with one foot. Just shift to N gear and pull the handbrake. If it's more than five minutes, simply shift to P gear and turn off the engine.

　　3、换挡不宜太快这里所指的换挡并不是行驶过程中的升降挡，而是指用换挡杆进行R挡、P挡的切换。如果在车子还未完全停稳的情况下加挂入R挡，或者倒车的时候还没停稳，马上就挂在P档。这两种情况都会造成齿轮的剧烈冲击，也就是常说的“打齿轮”。而双离合变速箱的一大常见故障就是齿轮特别容易被打掉，这个是目前我们维修厂经常会发现双离合的这一个问题。

　　3. Shifting gears should not be too fast. The shifting referred to here is not the up and down gear during driving, but the use of the shift lever to switch between R and P gears. If you shift into R gear before the car has come to a complete stop, or if it hasn't come to a complete stop while reversing, immediately shift into P gear. Both of these situations can cause severe impact on the gears, commonly known as "gear shifting". A common problem with dual clutch transmissions is that the gears are particularly prone to breakage, which is a common issue found in our repair shops.

　　4、油门轻踩轻放往往相同的一款双离合变速箱，在不同车型上却表现出截然不同的调教。相较于硬件上的不同，双离合的换挡逻辑才是每个车企需要花费大量功夫专研的地方。即便现在换挡逻辑已经经历过无数次的优化，但要让电脑完全领会到你的意思还是比较有难度的。因此要尽量做到油门轻踩轻放，避免电脑误判驾驶需求选择错误档位，导致换档顿挫及频繁换档，造成对齿轮的冲击和对离合器片的过多磨损。

　　4. The same dual clutch transmission with light throttle often exhibits vastly different tuning on different models. Compared to hardware differences, the shift logic of dual clutch transmission is what every car manufacturer needs to spend a lot of effort researching. Even though the shift logic has undergone countless optimizations, it is still quite difficult for the computer to fully understand your meaning. Therefore, it is necessary to try to lightly press and release the accelerator to avoid the computer misjudging the driving needs and selecting the wrong gear, resulting in gear shifting jerks and frequent gear changes, causing impact on the gears and excessive wear on the clutch plates.

　　5、3~5年更换一次变速箱油很多人对离合器有一个误解，就是湿式双离合是浸泡在变速箱油液里的，而干式双离合则是没有变速箱油。其实只是离合器的主动盘和从动盘的连接介质不同，干式是靠空气，湿式是靠油液，无论是干式还是湿式，其他齿轮组等摩擦部件都是有变速箱油润滑的。一般情况下呢这个变速箱油的保质期是三年，有些车型则是五年，具体参照用车手册。变速箱油过期之后润滑效果会下降，而且会增加摩擦，造成齿轮组等摩擦部件损耗加大，降低寿命。其实对于双离合变速箱来说，其寿命相对其它变速箱来说并不短，但是局限性较大。日常很多用车情况都会加剧行车磨损，所以给人的印象便是双离合变速箱寿命短。而反观CVT和AT变速箱，日常驾驶中就没那么多的注意事项了，所以给人更加省心耐用的好印象。

　　5. Many people have a misconception about the clutch that the wet dual clutch is immersed in the transmission fluid, while the dry dual clutch has no transmission fluid. In fact, the only difference is the connection medium between the driving plate and the driven plate of the clutch. Dry type relies on air, while wet type relies on oil. Whether dry or wet, other friction components such as gear sets are lubricated with gearbox oil. In general, the shelf life of this transmission oil is three years, while for some models it is five years. Please refer to the user manual for details. After the transmission oil expires, the lubrication effect will decrease and friction will increase, causing increased wear and tear on friction components such as gear sets and reducing their lifespan. In fact, for dual clutch transmissions, their lifespan is not short compared to other transmissions, but they have significant limitations. Many daily driving situations can exacerbate driving wear and tear, giving the impression that dual clutch transmissions have a short lifespan. On the other hand, CVT and AT transmissions do not require as many precautions during daily driving, giving people a more worry free and durable impression.

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