What does tfsi mean in audi. What is a TFSI engine? Problems and weaknesses of TFSI

At the moment, the same gasoline engines equipped with direct fuel injection technology and turbocharging (sometimes double) are installed on Volkswagen Group cars under the abbreviation TSI and TFSI. The TFSI nameplate is now found only on Audi cars, while the other brands of the concern (SEAT, Skoda and the Volkswagen brand itself) use the TSI nameplate on their cars with similar engines.

In part, this difference in the designation of almost identical power units is due to some confusion that arose in the ranks of the VW Group with the transition from naturally aspirated to turbocharged engines. In 2004, the naturally aspirated 2.0-liter engine with direct fuel injection, referred to by the German automaker as FSI (Fuel Stratified Injection), received a turbine and therefore added the letter T to the beginning of its name - TFSI (Turbocharged Fuel Stratified Injection). At one time, in addition to Audi, such a label could be found on the “hot” hatchback SEAT Leon FR and the “charged” sedan Skoda Octavia RS. In fairness, it should be noted that these motors were not produced for a very long time, since their production was quite expensive, which, accordingly, adversely affected the final cost of cars. In addition, the first generation of turbo engines with direct fuel injection (in fact, here the injection was layered) was distinguished by a problematic high-pressure fuel pump, timing belt instead of the timing chain and the old electronic control unit.

In 2006, a 1.4-liter engine was developed with a simpler and more reliable injection system, but with two superchargers (a turbine and a mechanical compressor). The full name Twincharged Stratified Injection was shortened to TSI. Almost immediately after that, a 1.8-liter engine with a single turbocharger was developed. On Audi, the units continued to be called TFSI, but on other brands of the Volkswagen concern, they already bore the name TSI. This trend continued after the appearance of a more modern 2.0-liter turbocharged engine, which only on Audi cars bears the TFSI nameplate.

The very first power unit TFSI, in comparison with subsequent engines of the TSI family, is very demanding on fuel quality and is generally more whimsical to maintain. The expectations of German engineers who equipped a gasoline engine with layered fuel injection with an additional catalyst for afterburning nitrogen did not come true. The main disadvantages of such a motor are its unreliability and a large amount of carbon dioxide emissions into the atmosphere, because it only meets the requirements of the Euro-2 standard.

In Russia, cars with real 2.0-liter TFSI engines with layered fuel injection are practically never found, only because they were not even officially exported here. An exception may be cars imported from Europe, although not so many of them were sold there.

If you have wondered about purchasing a car or replacing it, and at the same time want it to be equipped with TFSI engine, then collect as much information about this motor as possible in advance.

After all, what is a TFSI engine and there are quite a lot of options for cars with such an engine, and the choice is a rather difficult procedure and many different factors must be taken into account. For example, financial.

If your finances allow you to buy a good and high-quality car, then you already know that this purchase will serve you faithfully for many years. But we must not forget that the engine of any vehicle it is its most important component.

It is this node that is responsible for the power, speed of movement and the ability to transport a certain mass. Many modern motors have various prefixes and names and markings in their names.

Therefore, you, as a car enthusiast, must carefully study and decipher these data before purchasing such a tool. They can tell you a lot. Knowing this information, you will know what your car is ready for, what restrictions it has and how it will behave on the road.

Description and features of the engine

TFSI engine stands for Turbocharged Fuel Stratified Injection. But there is another abbreviation that is very similar to the one that will be discussed now, TFS. For some reason, many drivers mistakenly confuse them and are greatly mistaken in this. These 2 engines are completely different. They differ in features and design.

There is a motor with which TFSI really has common features, this is FSI, however, they also have very strong differences. For comparison, we will take these two engines to talk a little about them. FSI is by far the most old version motors, but quite reliable. For many years of its existence, such engines have managed to show themselves in work and have proven themselves well.

Once again, the German company was at the height of the production of high-quality and durable engines. It was the invention and production of FSI that became the impetus for the appearance of injection engines in general.

Over time, the quality of the developers' engines ceased to suit and they set themselves the goal of creating something new, more powerful and efficient. At the same time, they wanted to invent an engine that would emit less harmful substances into the atmosphere, that is, it would be more environmentally friendly.

By the way, at present, the Europeans have a leading role in ecology in all areas, including engineering. This area includes the conditions under which the quality of a product is recognized. So cars are no exception.

That is why in the production of engines for the implementation of their ideas, they did not affect only the one that concerned the injection of the mixture directly into the cylinders themselves. Everything else has changed. Some of the nodes have been revised and improved. Piston designs have generally been changed so that the engine does not lose its power, but at the same time reduces its compression performance.

2 camshafts were added to the design of the cylinder head, which were made of durable and resistant types of metals. Valves were made from the same material. The system responsible for the intake and exhaust of fuel was also improved. It was improved as follows: the channels that were responsible for the supply of fuel and the removal of gas workings were corrected.

The supply of gasoline has also been changed in TFSI. This system has undergone changes in the form of installing a modernized pump, which pumped up fuel and gave a pressure an order of magnitude higher than in FSI. As a result, we got more power, but lower consumption. In the previous version of the motors, the pump had only 2 cams, in the modern version one more was added and we already have a three-cam design.

The pump is electric, due to which its firmware has been changed. This made it possible for the engine to calculate the amount of fuel supplied, taking into account the needs of the motor. Gradually, we came to the main difference between these types of engines is the presence of a turbocharger.

In the abbreviation TFSI, this change occurred in the addition of the letter T. Thus, there was a change in the name from FSI to TFSI. Adding this letter to the name and the presence of a turbocharger gave this type of engine more power, dynamics and torque.

Now we would like to finally dispel all doubts about the difference between these two engines. After all, both in one and in the other there are turbines. And at first glance, they are the same and equal to each other. But no, there are still significant differences. Only TSI has two.

First, one of them is the supply of fuel, which goes to the intake manifold. The second difference is that the design of such a motor provides for the presence of a turbine tarbonaduva. That is, the design of the engine provides for both a mechanical turbine and an electric compressor.

Exhaust gases lead to the operation of one unit. Another unit increases the air pressure. Their work is organized in turn and depends entirely on the operating modes of the motor. TSIs are considered more economical and more responsive than TFSIs.

TFSI is most often installed by Germans on car brands such as Audi and Skoda. Now it’s worth paying a little attention to problematic issues and the main disadvantages of TFSI motors. Each unit and node has them, and it will not be right if we hide them and do not touch them.

TFSI engine problems

So, we will take the 2.0 TFSI engine and discuss what the owners of cars with these types of engines installed on them most often complain about. The first and fairly common problem is oil consumption or, as many car owners put it, “oil zhor”.

This problem is not present in fresh cars, but more concerning those that have already run more than average. Yes, there is a problem, but it is solvable and there is nothing wrong with that, just contact the service in time and they will help you fix everything. Usually everything is solved by replacing components such as the VKG valve. If this procedure does not solve the problem, then the valve stem seals are changed.

The second problem is knocking. It appears when the camshaft chain tensioner has already worn out. It is also solvable and occurs by replacing this node.

The third problem is the loss of power, that is, there are failures in acceleration. The problem lies in the valve number 249. Replacing it will solve all the problems.

The fourth problem with high revs the car is not running. Check the injection pump pusher, the problem is in it. If this unit is periodically checked (every 15-20 thousand kilometers) and controlled, then its replacement will solve everything.

Fifth problem refueled the car, but it does not start. Check ventilation valve. These kinds of problems are more about American cars. The most interesting thing is that we named the problems that people often encounter.

However, you probably noticed that all of them are quickly resolved. They bought the part, replaced it, that's the whole algorithm. Since the engines are quite complex, the best option It would be better to contact specialists in this field if problems arise.

Find out what it means TFSI decryption engine, it is better in advance, when different options for cars offered for purchase are considered. If financial possibilities allow, one should strive to acquire the highest quality machine, including technical specifications- it will last you for many years. And the engine is still one of the main components of the car.

It depends on him how powerful the car turns out, how quickly it will be able to accelerate and how much it will take away. Therefore, it is better to try and decipher any suspicious prefixes to the name and marking of the engine right away, so as not to guess later and expect surprises unplanned by its owner from this chosen car.

Deciphering the TFSI engine is quite simple: the abbreviation stands for Turbocharged Fuel Stratified Injection, that is, an injection turbocharged engine. Many mistakenly consider it to be an analogue of TSI, and are deeply mistaken - the engines differ from each other not only in characteristics, but also in structure. This type of engine is quite different from the FSI, although it has common features with it. Let us consider in more detail the qualities and principles of these various motor options.

Comparison of TFSI and FSI

The latter, whose abbreviation stands for Fuel Stratified Injection, is the oldest, but probably the most proven engine from a German concern that produces both cars and engines for them. We can say that FSI became the prototype of injection engines in general and TFSI in particular. At one time, the Germans were no longer satisfied with the quality of the engine they developed.

They set out to make it more efficient and powerful. At the same time, they wanted to reduce emissions from it into the atmosphere - the desire of Europeans to reduce its pollution was rapidly gaining momentum even then (as, in fact, it is now - one of the main conditions for recognized quality). In the implementation of their plans, they left intact the main idea - injecting the mixture directly into the cylinders. However, some nodes have been improved.

The piston crown designs were modified so that the engine could operate efficiently without loss of power characteristics at lower compression rates.

cylinder head began to be equipped with two camshafts, which began to be produced from a more durable and wear-resistant metal. They also began to make valves from it.

The fuel intake-exhaust system was improved, the channels through which gasoline was supplied and gas exhaust was removed were corrected.

Improved in TFSI and the very supply of gasoline. The system is mounted with an upgraded type of booster pump, which gives more pressure than in FSI. The result is a slight increase in power and a slight decrease in fuel consumption.

The pump itself is electric, three-cam design (as opposed to two cams, which operated the pump in the previous version of the engine). In addition, its firmware allows you to dose the supplied gasoline to the drop, depending on the consumption of the engine.

However, the most important difference is the presence of a turbocharger (this is what the letter T denotes, which distinguishes the name of one type of motor from another). The turbine forms a single complex with the exhaust manifold and provides a huge advantage in terms of power, dynamism and torque compared to the FSI.

Dispelling delusions

How is TFSI different from TSI? Both engines are turbocharged, and in this regard, it would seem that they are equal. However, TSI has 2 differences:

• Fuel is not supplied directly to the cylinders, but to a special intake manifold;
• The design contains the so-called duplicated turbocharging. The motor is equipped with a mechanical turbine - it is forced to work by exhaust gases - and an electric compressor that forcibly increases air pressure under any circumstances. They work alternately, connecting and disconnecting depending on the operating mode of the engine.

In this article, we will consider what does TFSI engine mean, as well as consider the main problems
TFSI engines. But let's start with the fact that this article will not describe the differences between TFSI, TSI, FSI, a separate article will be devoted to each engine.

The abbreviation TFSI stands for Turbo fuel stratified injection, which in English means a turbocharged engine with layered fuel injection. In this engine
fuel is injected directly into each combustion chamber
separate cylinder.

This achieves a good balance between economy and fuel consumption.
You can find more information about the characteristics of the TFSI engine in the table, there will be
some of the engines are considered (fuel consumption is not indicated there, but according to
manufacturer, fuel consumption in the city varies from 8 to 10 liters).

The engine was installed on, etc.

The advantages of the TFSI engine are:

1) Economy

2)Power

3) Ability to increase power

4) Big torque

TFSI engine problems

Well, as always, everywhere has its shortcomings, it is time to discuss them.

1)P oil consumption. This phenomenon begins to appear on average by a run of 100 thousand km,
oil consumption can reach up to 500 g per 2 thousand km. The easiest way to find out
it is to monitor the oil level, so you can prevent costly repairs.

The first culprit in EGR oil consumption (ventilation valve crankcase gases) if the replacement
did not help, then you have to go further and replace the valve stem seals.

2)Dips during acceleration most likely a problem with the bypass valve.

3) There is a problem with the ignition coil

4) Also from the minuses, you can see that the TFSI engine is demanding on oil and fuel,
besides, replacing the turbine will cost a lot. (almost in
end of the article) how to check the turbine before buying.

Specifications

Parameters	2.0TFSI***	2.0TFSI****	2.0TFSI*****	2.0TFSI	2.0TFSI******
Release years	2007-08	2011-12	2007-13	since 2008.	since 2008.
Engine type, number of valves	turbo, R4/16	turbo, R4/16	turbo, R4/16	turbo, R4/16	turbo, R4/16
Working volume	1984	1984	1984	1984	1984
Compression ratio	10.3: 1	9.8 1	9.8 1	9.8 1	9.8 1
Timing type	DOHC	DOHC	DOHC	DOHC	DOHC
Max. power (kW / hp / rpm)	169/230/5500	173/235/5500	177/240/5700	195/265/6000	200/272/6000
Max. torque (Nm / rpm)	300/2200	300/2200	300/2200	350/2500	350/2500

Spare parts prices:

Coolant temperature sensor (VAG) 1000 rubles

Boost pressure control valve (VAG) 2000 rub

Ignition coil (VAG) 5000 rub

Fuel filter (VAG) 1500 rub

Engine 2.0 (about 160 and more than 200 thousand rubles, used)

The cost of the turbine is about 50 rubles

* Prices for spare parts for TFSI engine are approximate and may vary depending on the city
and other conditions.

". Today I want to talk about TFSI engines, those that are put on some Volkswagen cars group. Such engines are mainly installed on AUDI cars. Many people confuse the TFSI engine with Volkswagen, but in fact they are different engines. Today I will try to explain as simply as possible and talk about these engines ...

EnginesTFSI - these are turbocharged engines, which are mainly installed on AUDI cars, as well as on some Skoda models.

Many fans of the brand may confuse TFSI engines and this is not correct, these engines are different in structure and characteristics. However, the TFSI engine has a lot in common with the conventional non-turbo FSI engine.

EngineTFSI andFSI

Thus, the TSI engine is more modern than the TFSI. Pickup TSI engine higher than TFSI in the entire range of work. And now a short video of the TFSI engine in operation.

TFSI engine operation

The TFSI engine is a worthy option in Volkswagen lineup group. All three FSI, TFSI and TSI engines are technologically advanced, reliable and economical units. And if you are buying a used car with a turbine, then you will be interested in the article - read it very useful.