What is the gearbox DSG. What is a DSG in the car: features preselative robotic gearbox with two clutches

Robotic DSG gearbox (English writing Direct Shift Gearbox, German - DirektschaltGetriebe), despite all claims, is currently the most perfect automated box installed on mass models of passenger cars.

The DSG box provides shifting gear without breaking the power flow, which significantly increases its consumer qualities compared to other "robots". Such qualities include the best accelerating dynamics and fuel economy (the engine does not work in a frightened).

Continuous transmission of torque from the engine to the drive wheels is achieved by applying two clips and the corresponding two rows of transmissions. DSG gearbox has a six-speed and seven-step design. Seven-step box (torque up to 250 nm) is installed on cars B, C and some models D class. The six-speed gearbox transmits a torque to 350 nm and is installed on more powerful machines.

DSG gearbox design includes a two-massed flywheel, double grip, two rows of gear, main transmission, differential and control system. Constructive elements are placed in the case (crankcase) box.

Double grip provides torque transmission to the first and second row of gear. On a six-speed box, the clutch includes a lead disk connected via the inlet hub with the flywheel, and two friction multi-disc clutches associated through the main hub with the ranges. The seven-step gearbox has two ordinary friction clutches.

On a six-speed gearbox double grip "wet" type, i.e. Constantly is in oil. The oil provides lubrication and simultaneous cooling of the disks, which significantly improves the clutch resource.

The seven-step box is equipped with a dry clutch, which allows to significantly reduce the volume of oil refilled (from 6.5 liters to 1.7 liters), reduce energy consumption and increase the fuel efficiency of the engine. With the same purpose on the seven-step box, the oil pump with hydraulic drive is replaced by a more economical electric pump. On the other hand, dry clutch is susceptible to greater wear.

The first row of the box provides the operation of odd gears and reversing, the second row is responsible for even programs. Each of the series of gear is primary and secondary shafts with gear blocks. Primary shafts are located coaxially, while the primary shaft of the second row is made of the hollow and will go to the primary shaft of the first row.

Gears on primary Valah have a rigid connection with the shaft. The gears of secondary shafts rotate freely. At the same time, the gears of primary and secondary shafts are in constant engagement. There are synchronizers between the gears of the secondary shaft, which make the inclusion of a specific transmission. To perform a reversing movement in the gearbox, an intermediate shaft is provided with a reverse gear. On the secondary shafts are also the leading gears of the main transfer.

Direct clutch and gear control provides control system. It includes input sensors, electronic control unit and electro-hydraulic unit as actuators.

Electronic and electro-hydraulic control units, as well as almost all input sensors, are combined into a single module named Mechatronic. The control module is located directly in the gearbox crankcase.

Input sensors track the frequency of rotation at the input and output of the gearbox, pressure and oil temperature, as well as the position of the transmission plug. The electronic control unit based on the sensor signals is implemented, laid into it, the control algorithm of the electro-hydraulic unit.

The electro-hydraulic control unit ensures the operation of the hydraulic transmission control circuit. It includes spools-distributors, electromagnetic valves and pressure control valves, multiplexer.

Splitzer spools are driven by a selector lever. Electromagnetic valves switch gear. Pressure control valves provide friction clutches. Electromagnetic valves and pressure control valves are the actuators of the transmission control system.

The box uses a multiplexer device that allows you to control eight gear hydraulic cylinders only with four electromagnetic valves. IN initial position The multiplexer employs some hydraulic cylinders, in the working - others, and in both modes, common electromagnetic valves.

The principle of operation of the DSG gearbox is consistently incorporated transmissions of both rows. At the same time, during the operation of one transmission, the next transmission is already selected and ready for inclusion.

DSG transmission abbreviation transmissions is translated as a box direct switch Speed. Initially, this type of checkpoint was developed by Volkswagen engineers. Subsequently, robotic transmissions began to put on many other brands of cars. In this article we will analyze what characteristics it has to Volkswagen and what is its disadvantages.

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Characteristics

To begin with, consider what DSG automatic transmission on Volkswagen Tiguan, Golf, Jetta, Polo, Passat 2012, 2016 and other years of release.

Initially, the developers of this type of transmission have completed the unit with two couplings. At that time, he was an upgraded mechanical transmission. Only in contrast to traditional manual transmission, robots were equipped with two primary and secondary pulleys. Each of these elements combined with a power unit of the vehicle through a special multi-disc clutch.

The gearbox from the producer of Volkswagen is equipped with five shafts, gears, as well as two clips.

Thanks to such a design, the car with DSG is more smoothly, its power unit without loss transmits a torque. Therefore cars Volkswagen Passat., Golf Sedan and in another body with robotic transmissions accelerate faster, unlike vehicles with MCPP. Recently, the boxes began to be equipped with a tytitronic system, which means that the driver can switch the transfer manually. As for the service life, according to official data, it corresponds to the resource of the operation of the car.

In fact, the gearbox may fail by 100 thousand km of the mileage when assuming errors in its use.

Dvg DSG 6 and 7

DSG 6 is the first robotic gearbox, which was released in 2003. In such aggregates used "wet" clutch operating in a special oil bath. The main disadvantage of this transmission was to reduce the power of the power unit through the use of lubricant liquid.

Five years later, in 2008, developers provided a robotic seventh generation gearbox, which uses dry clutch. Figures 6 and 7 denote the number of aggregate steps. These are the main differences in gearboxes.

User Vladimir Bazekin provided a roller, which shows the principle of action of the CAT DSG.

Pros and Cons DSG

What advantages are characteristic of robotic checkpoints:

1. Good overclocking speed. According to the owners reviews, this advantage is considered key.
2. Fuel economy compared to the traditional machine. Achieved thanks to constructive features and principle robotic gearbox.
3. One of the main advantages is the reliability of the aggregate. In this regard, it is impossible to compare robotic transmissions with mechanical. But compared to the automata of the DSG gearbox more reliable. With the proper use of the unit and the timely replacement of oil, the transmission will last long.
4. During driving, the DSG 6 box on Volkswagen smoothly and almost imperceptibly switches speeds. This provides comfortable management of the vehicle.

The main cons characteristic of robots:

1. High price vehicle equipped with such a transmission. Machines with robotic gears are always more expensive.
2. The appearance of faults in improper operation of the car. If errors are allowed when used, it will lead to problems in the operation of the transmission. There will be uncharacteristic for the operation of the noise aggregate, which are particularly explicitly manifested when driving along an uneven road.
3. Vehicle thrust during acceleration can be reduced. This drawback has long been known to developers, over time they promise to eliminate it. The occurrence of delays when switching speeds is possible.
4. Of course, the control module fails. Practice shows that central processors are rapidly wear out and come into disrepair. As a result, the car owner will face the need for repair or changing the device.

The channel "So and so" provided a video in which tips and recommendations regarding the operation of robotic transmissions of DSG are described.

Common problems

The problems associated with the work of robotic transmission can be divided into several types:

1. Appearance outsided sounds In the functioning of the unit. We are talking about grinding, as well as metallic clay. With such issues, it makes no sense to contact the official dealer, since the company's engineers Volkswagen consider such malfunctions non-serious. The manufacturer's representative will not take place for repairing the box if there are no pinkies or vibration in its work, arguing this feature of the transmission functioning. More accurately determine the malfunction will allow independent computer diagnostics.
2. The appearance of jerks, vibrations, pinks, as well as a decrease in thrust during the acceleration of the car. With such issues, car owners are often faced, in vehicles which was worn by clutch. Prevent this malfunction will not be possible. After its appearance, the problem will continue to progress. Vibration can manifest themselves when overclocking in the second speed and disappear after a few seconds when the driver comes over an obstacle. The grip is considered a weak "link" in the system. When the site breakdowns, experts advise to put on the machine device DQ200. According to representatives of the company Volkswagen, this option is more reliable and has an increased resource of operation.
3. Activation emergency regime. This is usually due to the lack of gear. The problem may manifest itself during the movement or when the power unit is launched. You can try to get rid of the malfunction by shutting down and re-activate the ignition. The cause of the problem lies in the output of the mechatronics, the device will have to be repaired or change. The cost of the new node is up to 90 thousand rubles. By design, the mechanical module of the mechatronics is a complex node, it is designed to control the transmission unit.
4. Malfunctions can be manifested as a result of errors made when replacing working fluidIf the synthetic lubricant has been replaced with mineral. When the car is used in the region with a warm climate, the interaction of "synthetics" with copper components of the transmission can cause short circuit. This will lead to malfunctions in the work of the electrical component.

1. FASTED WITHOUT MECTERNIC HYDROITY 2. Worn grip robotic checkpoint

How to use DSG?

What should be taken into account when operating a robotic transmission, to prevent its premature failure:

1. This type of gear boxes does not tolerate "journey". It is better to prevent a sharp movement from one row to another at the speed of movement of the stream of cars not more than 50 km / h.
2. When driving under traffic conditions, it is recommended to activate S or MANUAL mode. Thanks to which you do not have to constantly switch from the first to the second and third gear and vice versa. This allows you to increase the clutch operation resource.
3. Do not slip the wheels at the beginning of the movement. Power unitswhich are equipped with folixwagenes, together with robotic transmissions, show excellent dynamics. Therefore, it is necessary to be careful, especially on traffic lights.
4. Include neutral transmission at short stop is not recommended.

At the moment, modern DSG model shift gears are the most advanced automatic gearbox. They differ significantly at the price of the usual "automata", and, in a smaller side. Robotic DSG gearboxes are installed on all brands of cars of the Volkswagen concern, gradually squeezing out ordinary models from the market. According to its own principle, they are an analogue of a mechanical CP, however, during shifting the gears, they work in the same way as automation - using a computer program implanted into a special control unit.
The main feature and advantage of this approach lies in the innovative technology, which allows you to switch the transmissions, practically non-losing the engine power parameters at this point. Of course, in this case, the efficiency of work and comfort is significantly higher, however, as well as a sense of a car during a ride. The secret of success in the double clutch system, which allows not to rotate the torque during switching, thereby making the direct transition between the transmissions almost inconspicuous, both for the engine and the driver.

It is worth noting that at the moment the DSG 6 is not the last model of the entire row robotic boxes from Volkswagen. The DSG 7 version is also released - seven-step gearbox. Two models differ from each other with maximum torque indicators. So, the seventh series can develop torque mainly up to 250 nm, which makes it possible to install it on budget cars. At the same time, the sixth model is considered more powerful (up to 350 nm) and is installed on larger and powerful cars, most often premium class. Of course, the power of DSG 6 lacks for work on large SUVs, where Volkswagen most often install "automata" with eight steps.

6 Step DSG consists of several devices:

• two rows of gear;
• double grip;
• differential;
• carter;
• system control unit;
• lavar gear.

How does a robotic DSG box work

The device of a robotic box from Volkswagen is too simple cannot be called, but, in fact, most of the principles of its work are based on ordinary mechanics with elements of the "machine".

Double grip is the main catalyst for transferring torque into two rows of gear. The drive disk is started due to the clutch. With flywheel and friction clutches, it connects a special hub with a mounted flywheel, which also combines each of the transmissions each.

The DSG 6 automatic transmission has a "wet" clutch, which, regardless of whether it works or not, should be in sufficient oil. Note that it is because of this a six-speed box requires for correct work. more oil (about six and a half liters) than seven-step (just two liters). This is due to the fact that DSG 7 is equipped with a "dry" clutch, for which a significantly smaller oil is needed. It is impossible not to say that with this state of affairs, the "six" is less effective, as it is installed on it hydraulic pump For oil, not electric, like her "younger sister".

As we have already spoken above, two rows of gear are used in the design. The first row works exclusively with odd gears, including rear. The second number is responsible for the correct operation of even gear. So, each of the rows works in a bundle, representing two shafts with gears.

One of the most important elements of the box is an electronic control unit. It also consists of several parts:

• sensors allowing to collect data from car systems;
• electronic "filling" managing everything through a computer program;
• hydraulics;
• mechanisms responsible for the execution of commands of the control unit.

The control unit is located in the crankcase itself (the main body of the gearbox). All hydraulics and electronics are located in one special block, known as a mechatronics. Sensors receiving signals from other car system is also in a block with electronics and hydraulics.

Input sensors are needed in order to read the data on how rotation is rotated at the output and the input of the KP. They also check the oil temperature, the level of pressure and whether the plugs of the box are correct. The electronic unit receives all the information from the sensors, after which it uses one of the cycles that are laid in its main gearbox control program.

If we talk about the electro-hydraulic, which is the second the most important element Control DSG 6, then it responds to the adjustment of the CP hydraulic circuit. If you dig deeper, then several main components of the electro-hydraulic unit can be distinguished:

• electromagnetic and adjusting valves (the second is responsible for the pressure level);
• distributing spools;
• multiplexer issuing the primary control signal box.

As soon as the selector begins to move, the distributors come into operation. Shift shift is carried out using solenoid valves. Pressure valves allow you to correctly adjust friction couplings. Thus, the valves in the DSG 6 box can be safely called the main executing elements providing the main principles of operation of automatic transmission.

A multiplexer remains, which is engaged in the control of hydraulic cylinders. There are eight of them, but at the same time not more than four valves are used. During the transition of the multiplexer to the various mode, the working bundle turns out different cylinders. But, there are always only four - all at the same time, no with what mode, it will not work.

Thus, it can be understood that the DSG 6 gearbox operates on relatively simple algorithms that are cyclic. At the same time, two rows of gear are used. Starting the first, you immediately start the second, which until the switch remains in an inactive position, however, during the transmission switching, it does not start again, and simply goes to the active phase, thus reducing the time to switch up to several fractions of a second.

It is necessary to understand that DSG, both six and seven-step gearbox, is a relatively new models of transmission. Let the switching occurs in automatic mode, it is impossible to say that it is a familiar "automatic" or even something close to it as much as possible. Therefore, there are a number of rules that should be known by car drivers with a robotic gearbox. Compliance with them will allow you to increase the service life of the system and protect it from breakdowns. It is extremely important, since the repair of DSG 6 is not cheap pleasure.

Switching on different cars With such a box, including Tiguan and Golf, pretty tough, if you want to change the ride style sharply. Such behavior of drivers is often found in the conditions of urban roads, but, a sharp style shift should be avoided, as it can quickly wear the box of the box. It also makes sense and in winter timeWhen a car can start, without warming up completely - in this case you need some time to move very carefully, without breaking off or sharply induce the brake pedal.

About maintenance It must be remembered that it is necessary to change the liquid and filters in the DSG 6 at least once every 60,000. We note that saving on cheap liquids can lead to a rapid output of the box. It often happens that once saving, the driver has to change not only the mechatronics DSG, but also almost all automatic transmission systems, which is quite comparable to buying and installing a new "machine".

I remember everything that we wrote above can really improve the operation of the box and significantly increase its life. The main thing is not to forget about the careful handling of this system.

Oil change in DSG 6

Finally, briefly tell about how the oil is replaced in the DSG boxes. The process looks unusual, although the complexity is no different.

Mechanics use a special large syringe designed to work with robotic boxes. The gearbox oil is poured below, after checking the oil for chips. It is noteworthy that independent replacement Oils in a robot box is practically impossible without special tools.

The effect after they change the oil, very tangible. If you ride with DSG at least a year, then after replacing the feeling is created that you put literally new system Shift. The car moves much more smoothly, and various brazers and twigs, which sooner or later may appear when operation dsg. 6, disappear after replacing the oil for a long time.

For a long time, traditional mechanical gearboxes were considered the most reliable units capable of serving the car for a long time without any interventions and troublesome service. However, the owner of a car with "mechanics" is doomed not only for permanent manipulations with the gear shift lever, but also on the filigree work with the pedals of the clutch and gas. It is randomly infratless to release the clutch pedal and the non-merciful car jerks are provided. But, if over time, the use of a manual gearbox can be brought to automatism, practically not paying attention to the process of switching the gear, then problems caused by frequent stops and starting in traffic jams, having a car with manual transmission, not avoid. As shown informal surveys of drivers who have become owners of cars in last years, It is daily urban traffic jams that cause a choice of a machine equipped with an automatic transmission. At the same time, it should be noted that at otherwise equal to equipping a car of a particular model, the version with the "automatic" will cost the buyer more than several tens of thousand rubles relative to the option with the MCPP.

Hydromechanical automatic transmissions greatly facilitate the life of the driver, because they independently switch to the desired transmission, without requiring constant clutch squeezing. At the same time, the sensation of the ripple of the motor thrust smoothes the torque converter. Nevertheless, even modern highly reliable hydromechanical boxes have its drawbacks. The main ones are considered to reduce the power of the motor in view of hydraulic losses, as well as an increase in fuel consumption. Did not solve the problem and appeared robotic boxes, which have the transmission and clutch transmission techniques. Bring the algorithms for the work of robotic boxes to perfection, as well as provide high level The reliability of such aggregates has not yet been possible even by BMW cylinds.

As a solution to the problems of traditional "mechanics" and eliminating the deficiencies of standard hydromechanical automatic transmission, the Specialists of the VAG concern developed an innovative 6-speed DSG gearbox (DirektschaltGetriebe or Direct Shift Gearbox). The specified unit was first established in 2003 on the model Volkswagen Golf. R 32.

The idea of \u200b\u200bthe DSG itself was pretty simple. In order for the transmission process is optimal, it is not necessary to install one on the car, and two boxes are one for even, and each other - for odd gears, and each of them must have its own clutch node. While acceleration is accelerated using even transmission, the following is an odd, also enabled, waiting for the translating the current traction to it. According to this principle, DSG is customary called preselective transmission. As soon as the transfer of the transmission comes, the adhesion of the even transmission opens, and the "odd" clutch is synchronously closed. Thus, the process of transferring traction efforts from one check-in to another is in the inseparable, which not only ensures the preservation of power, but also eliminates the jerks and clips characteristic of the usual mechanical boxes. Of course, the DSG boxes installed on many models of the concern VAG are a single unit, but general principle Its works are as described above.

It would seem that the "recipe" of the ideal gearbox was found, however, some circumstances prevented mass use of DSG. The fact is that the DSG, installed on cars with relatively "weak" engines, significantly losing in the fuel economy with similar machines equipped with ordinary "mechanics". The pump serving powerful hydraulic DSG drives constantly took the fair amount of motor power. Another source of loss " horse power"The wet frictions were" wet ", in which the efficiency of the efficiency is inferior to the" dry "clutch. It was so that the six-speed DSG could be installed only on models with rather powerful motors. That is why, like a similar gearbox, equipped volkswagen models, Skoda and SEAT, under the hood of which the most powerful motors are installed.

Literally immediately with the beginning of mass production of cars with DSG 6 boxes, German engineers presented new modification DSG boxes designed specifically for car models with relatively small motor power. This is about 7-speed DSG 7. Such a box, in addition to seven programs, has a system of "dry" clutches instead of used earlier, a set of "wet frictions. Another innovation was the presence of an electric oil with an electric drive. It is used only in case of a drop in the pressure level below the critical mark, which is not taking the power of the motor constantly. DSG 7 is a more economical unit than DSG 6, in addition, a seven-step box is much easier than its six-speed counterpart. However, the DSG 7 is capable of cope with the torque, about 250 nm, which is 100 nm lower than a six-speed box with a "wet" clutch. That is why the area of \u200b\u200bDSG 7 - tandems with not the most powerful motors, such as a 140-strong 1.4 TSI engine installed under the hood or 85-strong 1.4 liter engine installed on Volkswagen Polo.

In addition to the double-clutch system and two rows of gear, the DSG design is characterized by the presence of the main transmission, differential and control system that are placed in the box crankcase. The double grip consists of a drive disc connected by the input hub with the flywheel, as well as a pair of friction multi-disc couplings associated with both transmissions of the main hub. The grip of the "wet" type, installed on the DSG 6, is always in the oil bath. The seven-step unit has a dry clutch node, requiring a significantly smaller volume of oil refilling. In addition, on DSG 7 hydraulic drive Oil pump replaced by economical electric pump.

The first row acts odd transmission and reverse, second row - even programs. Both rows are shafts with gear blocks located on them. The gears of the primary shaft is rigidly connected to the shaft. The gears of the secondary shaft rotate freely. At the same time, the gears of both shafts constantly fit with each other. Synchronizers, including specific transmission, are located between gears on the secondary shaft. The control system headed by switching and clutch control includes an electronic unit, input sensors and an electro-hydraulic unit.

Electrohydraulic I. electronic blocks, like input sensors, are integrated into a common module called Mechatronic. It is located in the box of the box and is the most problematic knot of DSG boxes. Generally speaking about limitations The transmissions presented, it is worth noting that with the active manner of driving, the control units included in the Mechatronic design quickly wear out, the result of which becomes the need for expensive repair. In addition, in conditions of long standing in traffic jams, in order to avoid premature wear of the gearbox items, the manufacturer indicates the mandatory switching of the gear lever to the neutral position. Another one, not the most pleasant feature of the DSG boxes, is possible noises and knocks when switching from the second to third transmission. It is noteworthy that the manufacturer officially explains the similar clang in the box as constructive feature Its works that does not affect the durability and reliability of the entire unit.

It should be noted that not so long ago problems with the failure of the DSG boxes, especially its seven-step version, began to acquire such a massive nature that the concern Vag was forced to approve the program of an extended warranty for this expensive automotive unit, increasing warranty period up to 5 years or 150 thousand km run. The situation was most acute with models Skoda Octavia. And Volkswagen Golf, which were installed by DSG 7.

For today, problems with DSG boxes are no more than with any other PPCs. At the same time, the presented transmission has a number of undeniable advantages. Such a transmission reduces the time of acceleration of the car to the desired speed, making the switching almost imperceptible. When driving a car, the feeling is created that the machine is moving constantly on one transmission, accelerating and slowing down when required. The transmission selector is not only similar to the use of ordinary automatic boxes Gear, but also additionally provides manual switching. To do this, you need to move the lever up or down.

In valid, there are now countless car brands, each of which is fighting for the best place under the sun. The most popular and known for the moment is very popular with a remedy predatory DSG box, having two clips. Most often, it can be found among the cars of the VAG concern. In this article, readers will be able to familiarize themselves with the advantages and disadvantages of the mechanism.

Reduction DSG is decrypted as Dual Shift Gearbox, which means two clips per year. There are quite a few different box modifications, although the first in the history of them was released in 2002. The first of them had six gears, a wet clutch system, which made it possible to withstand the torque of 350 nm. The firstborn received the Marking DQ250, but the progress did not stand in place and a more economical unit was presented to the market soon - DQ200. It has already seven gears and dry clutch, and the maximum torque was 250 nm. In the creation of DSG boxes, the WAG concern helped Borg Warner and Luk. Seven years later, there was enough work in Vaga, and he managed to release his own brainchild, called DQ500. It is noteworthy that the manufacturer managed to equip its product torque in 600 nm using it on the technique of a commercial segment.

Another popular modification of the DSG is the S-Tronic model, which had a similar torque DQ500. Most often this unit can be found on audi carsHowever, there is a very important point. This box can only be installed on that transport that has a longitudinal location of the engine. To be honest, then the wag really managed to realize the technology of the future and no variators or machine guns can not be what a two-chaired, two-chaired gearbox. She received everything that could be obtained: switching speed, smoothness of switching, convenience, the ability to choose a ride mode and most importantly - unpretentious in operation.

Principle of operation DSG4.

According to the principle of its work, DSG is the same mechanic, but the robot allows you to switch the transmission without losing power, which significantly distinguishes it from ordinary mechanics. In the manual transmission, the power is losing at the moment when the grip is squeezed, and at the time of the torque weakening, a small part of the fuel simply fuses. Robotic double grip allows the car to get due dynamics and efficiency.

The gears of DSG are included at the expense of sync couplings, and the hydraulic cylinder is activated by forks. Due to the hydraulics, the clutch is also turned on / off, but is dominated over the "Mechatronics" process. In the case of the mechatronics, electronics and electro-hydraulics nodes are concentrated. Surely readers will be interested in the question: "How did two shaft and two boxes united in one?" Everything is simple, for the shaft of even gear shaft is a hollow, and odd and rear - on the contrary, the latter is located inside the first. Such a cunning allowed simultaneously to conclude two MCPP in a single building.

Reviews of car owners

1) I own two cars, both of them are equipped with DSG box, but one of them is a six-speed, and the second is seven-step. I can not say anything bad, the mechanism is very reliable, but you should get used to his work. The box can be freely adjusted under your control manner. Smoothness, sharpness - all this is customizable features of a box that is significantly better than a banal machine. Traveling more than 50,000 km did not arise any problems with transmission. The main difference between DSG - the available two clutches, but this is too simple formulation. Here, in addition to the clutch, there is also a second box that is hidden into a common case. At first glance, no one can identify that the car uses two checkshes. Similarly, that one shaft will not be enough for the work of the clutch, which provides the second. As for the shafts, one of them has the appropriate gears for rear and odd transmissions, and the second is for even. As soon as the car rows from the first gear, the box is already thinking about the actions and includes the second transmission, holding it on ready. The clutch before switching is blocked by one shaft and connects the second shaft, which allows not losing power.

2) acquired yourself new Passat. 1.8 TSI with straight from the cabin, which has already runs 30000 km. There are no complaints on the technique at all, because its handling, maneuverability at height, as well as the pleasure derived from driving. By gaining speed, you can feel the rigidity of the steering wheel, which means you can even better control the machine. Let the car and not a sports car, but I want to speed up slightly. Although at a speed of 100 km / h in turns a little lies, although what I want at such a speed in urban conditions? By the way, if someone has a similar problem, then try changing the rubber. Up to one hundred, the car accelerates in just 9 seconds, and the gear shift occurs like clicked seeds. Well, of course, double clutch makes itself felt and keeps two speeds at the same time. IN sports mode The box gives free overclocking up to 200 km / h. In general, the box work is simply flawless, in satisfied!

3) Honestly, I bought the sixth Passat herself positive feedback. In fact, the car is very good and serves me for more than 10 years. As for the body, configuration, and however, the prices - the trade winds are not worth the money that they are asked for them. The checkpoint is just unnecessary here, because the manufacturer has worked well from the moment of release. Of course, no one denies that there may be problems in operation, but all this is fixable.

4) as applies to japanese market, its manufacturers enjoy a robotic checkpoint, including Nissan and Toyota. My parents acquired Camry at their time, on a robot about five years ago. The car is operated daily and no problems arose, it is important only to monitor the car.

5) The seventh generation of DSG is a real problem. It really is so and telling fairy tales I will not. The most common problem. The ones discussed on the forum is the flushed clutch and mechatronics. I decided to chat with one of my acquaintances with a hundred, so according to him - the problem is relevant. He says that at least once a month arrives at least one volkswagen car, Audi, Toyota with a similar problem or clutch, or mechatron.

Repair of this product is quite increasingly, and you can make sure that I look at the Internet. But the sixth generation of boxes with double clutch Everything is much better! I say, because I was convinced of personal experienceHosted by golf. The car is just great, at first I doubted the purchase, but I did not regret after anything. It was a seven-step gearbox and no problems have arisen for 5 years, so I do not recommend buying cars with anyone.

DSG reliability

As already known, most motorists, the classical automatic transmission does not require clutch or powerful flywheel, which uses DSG. Moreover, the simple flywheel will not be enough, a wear-resistant and two-massed unit is needed. It should be enough for at least 200,000 km run, but it is only in theory. In fact, the flywheel wear is about 100,000 km, if the box is inactious. In wet occurs best cooling Systems, which made it possible to increase the wear resistance resource up to 300 thousand km, when dry is 100-200 thousand km.

Dry DSGs already per 100 thousand mileage gives immediately to know about problems that are most often associated with electromagnetic valve wear. The reason for the location of the mechatronics in the upper branch of the checkpoint. There is a strong heating, as well as the box. The complexity of the design is also caused by the presence of a heat exchanger. The heat exchanger is represented by a water-insulated separate radiator, to prevent temperature drop in mechatronics. In any case, they will occur, but due to the heat exchanger, the difference is much lower. What caused a similar difference? It is better to think that it will be with the mechanism that stood on the street in frosty weather, and then went to the track and accelerated to a decent level or "plenty" in traffic jam.

The demand is able to give birth and offer and there are countless services offering mechanical repair services. Official dealers unable to offer something similar except full replacement CAT. It is important to note that the repair of DSG with their own hands is or impossible, or an insanely complex and even experienced autoarerence will not be able to repair. You need a complete set of special tools, for assembling and disassembling the device. It is very important that even the shares of Micron are important in the DSG system, unlike ordinary mechanics and automaton. In order not to be mistaken with the choice of car repair shop, it is recommended to study its rating not only on the Internet, but also to ask the familiar who came across repair DSG.. The two-level system is very good in operation and is almost resistant to wear, which guarantees a large stock of the course and saves the money owner. Remember that - not the best brainchild of the manufacturer, so it's not worth stopping your choice. The most optimal among modern devices 5 and 6 generation of a similar unit, which are very simple in design, repair and operation.