Removal and cleaning of the diesel engine filter: photo and. Using a diesel particulate filter which liquid flush the sump filter

Modern diesel cars have many design solutions for cleaning the exhaust engine gases. This refers, as well as one of the solutions is the ubiquitous installation of DPF particulate filters. In the process of active operation, such a filter can quickly fail under certain conditions.

The main task of the filter element is the capture of soot. The next stage It becomes hurrying accumulated particle sediments in such a way as to minimize damage to ecology. At the very beginning, the filter collects soot until a certain point. This moment is determined by the difference in pressure in front of the element and after it. When the pressure deviates from the allowable limit and the bandwidth of the filter does not allow to effectively pass the exhaust gases, the diesel activates the corresponding mode for afterburning the accumulated soot.

Having sow on the diesel engine is turned on under various conditions, which are individually set by a manufacturer of a particular model. Summarizes these conditions that diesel should have an average or high speed and be in motion. ECU gives a team to increase the amount of fuel at the time of injection. The result becomes an increase in temperature exhaust gases at the exit. With such an increase in the temperature of the soot travelers. If the machine is operated in the urban feature with short trips at low speeds, it is constantly warming up in winter and is idle for a long time in traffic jams, then self-cleaning mode squeeze filter Simply is not activated. Permanent finding in such conditions leads to a rapid clogging of the element.

The soot actively accumulates and scores the filter element. After the bandwidth decreases by 9/10, the resistance to the exhaust gases will result in power loss and. This malfunction, which is associated with actual blockage exhaust system, it can touch both new cars and with a big mileage.

The service life of the particulate filter directly depends on a number of factors and individual operating conditions of the vehicle. The critically scored item needs to be changed. It is worth noting that the cost of high-quality new part is quite high. For this reason, the question of how to clean the diesel filter diesel engine.

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Why the particulate filter clogs

The contamination process begins as a result of combustion in the cylinders of the diesel engine. By-product combustion of the mixture of diesel fuel and air is soot. The specified soot does not carry much harm to the filter, as it is a fine powder. When filtering on the grid, these particles are simply delayed.

The problem arises due to the fact that in the exhaust the presence of particles of hydrocarbons, which have not burned in the working chamber. Hydrocarbons lead to the fact that the active formation of resinous sediments begins. Say microparticles are literally glued with a resin, resulting in an accelerated formation of Nagara. Also in Nagar there are also components in the form of metal sulfates, which are formed after the combustion of the caught oil into the cylinders.

Sulfates in the exhaust appear due to the fact that metal-containing additives are included in the basic composition of the additive package for diesel oils. This is especially true for universal engine oils, which can be equally used for both diesel and for. The result becomes that a dense nagar on the particulate filter system of self-cleaning of a diesel engine is not able to remove.

Advantages of regular prevention, cleaning and washing

Fluids are made from oil components, often facilitated in 5 liter canisters. Average flow for high-quality washing One particulate filter is at least 4 liters of composition. Moreover, the canister can have a special neck in advance, as it will be necessary to connect the hose. Absorptions are also possible, equipped with a ready-made hose.

Operating principle washing fluid It is based on the fact that the composition effectively dissolves resins (withstanding about 8 hours), which holds the resulting naugh. It is necessary to carefully monitor the requirements of the manufacturer of the liquid, as it is very important to wait necessary time For the full effect of washing for sage.

Next, the released soot is simply washed off with a regular jet of pure water under pressure, which is served on the filter. After that, the filter will be dried and put in place. The resin solvent itself is made on an oil basis, is well washed with water, does not represent harm for the structure of the catalyst.

Washing with removal allows us to use only special fluidswhich at the molecular level affect the resin. Use other means is strictly prohibited, so the matrix inside the filter has a fragile platinum layer. After washing, the effect of cleaning is monitored visually. Often this method provides the full and most effective cleaning of the filtering element.

Flushing by car without filter removal

The second way is the washing of the particulate filter without removing, which means conducting work directly on the car. The filtering part of the diesel car is equipped with pressure sensors and / or temperature. If the sensor is unscrewed, then the ability to submit washing liquid.

Since the washing is carried out on the car, manufacturers take into account the possible risk of fireflowing. In such conditions it is impossible to use petroleum products. For cleaning, water-alkaline solutions are recommended in a pair with a flushing fluid. This liquid Neutralizes a malicious alkali after the solution completes the cleaning process. The fluid supply to the element housing is performed using a specially designed pistol. A straight or curved probe also applies, an additional dispenser is provided.

A set of liquids, a gun, sprayers and probes allow you to work with almost any model of a diesel vehicle equipped with a sump filter. Cleaning this method implies a phased dosed purifier flow through the sensor hole. Most often uses the place of installation of the pressure sensor, which is located in front of the element. It is heated in advance, then it is allowed to cool the filter to an approximate mark of about 40 degrees Celsius. The fact is that alkaline cleansing composition is most effective at such a temperature.

For cleaning, about 1 liter of fluid will be needed, which is left in the element housing for 15 minutes. The high-pressure spray gun is connected to a straight or curved probe, which is injected into the sensor hole. The cleaner is sprayed with interruptions (up to 10 seconds. Sprayed up to 10 seconds. Pause) directly to the surface of the scene filter. Working pressure during sprup should be about 8 bar. The probe is desirable to rotate in the process of spraying the composition, as well as move forward and back to achieve a better quality of application of cleaning fluid on the matrix of the filter element.

Then the rinser is similar in the same way, which neutralizes and flushes the cleaner. It will take about 500 ml. Cleansing composition. The washes occurs with the same pistol sprayer, similar pause intervals are respected between the stages of sprayed. Thanks to this approach, the soot is distributed over the surface of the matrix more evenly. The result will be what South can be much more effectively shook in the process of automatic self-cleaning.

Upon completion, the pressure sensor is set back into place, diesel starts and warming up. After that, it will be necessary to start the self-cleaning mode in order for burning the particles freed from the fastening resins. This can be done as a "natural" path and forcibly. In the first case, it will be necessary to actively operate the diesel engine on the go in medium and high revolutions to the mode in the mode of medium and high revolutions to independently initiated the start of the regeneration of the particulate filter.

If such a possibility is not or initiating an automatic self-cleaning start does not occur due to failures in the operation of the diesel electronics, then the mode is activated forcibly. This is done using a diagnostic scanner. Equipment for diagnostics will also evaluate the quality of cleaning the sump filter from Nagara. To do this, you need to compare the readings of the bandwidth of the element before and after the use of flushing.

Fast independent cleaning

Today it is also found a variant of packing flushing fluids into aerosol cans, which eliminates the need to use spray gun. Additionally, the necessity of sprayed the rinse cleaner was excluded, which depends on the specific producer of the liquid and the composition of the proposed cleaner.

To use such solutions is extremely simple, which can be estimated by the example of using the sump filter washing without removing the filter element from Pro-Tec. The DPF Catalyst Cleaner product is a 400 ml foam cleaner spray cylinder, which also has a flexible probe. Such a quantity is enough to completely clean one element regardless of the degree of contamination. The tool can be used to clean the diesel particulate filters of any generation.

• Before using the can be shaken at least one minute;
• Next, the pressure sensor is removed, providing access through the hole;
• Then diesel is heated a bit and after the mooring motor;
• The next step becomes the input of the probe and sprayed the cleaning agent;
• It is not necessary to spray the cleaner immediately, but for several approaches (5 seconds sprayed, 5 seconds of pause);
• The procedure continues to the visible appearance of foam in the sensor hole;
• After the spray probe, it is necessary to remove, setting the sensor removed;

Before the first launch of the diesel engine after cleaning, the manufacturer also recommends adding an additive into a diesel fuel called Super Clean. The composition is poured right in fuel tank Car in accordance with the dosage indicated on the package. As can be seen, the additional flushing of the filter itself is not required after cleaning.

How to better clean the sump filter

Each of the described methods of cleaning according to the assurances of manufacturers provides a qualitative result. Each method has advantages and disadvantages in terms of implementation. In the case of flushing with removal, it will be necessary to experience difficulties with the dismantling of the element in the housing, to spend a certain amount of time for flushing, and also pay cash For 5 liters of flushing fluid. The advantages of the method can be considered simplicity and the lack of need to have special diagnostic equipment at hand to force to activate the self-cleaning system.

The second method will significantly saves time, but it may be even more costly on finance relatively to the first. In this case, it is often necessary for equipment not only for spraying cleaner and washing, but also a diagnostic scanner for forced sage afterburning. For this reason, the cleaning procedure without removal is preferable to perform a hundreds of experienced specialists for an additional fee

The third way is cheaper and faster, but inferior to another effectiveness. Many car enthusiasts are more two recent solutions For cleaning without removal rather to preventive methods, which must be regularly carried out under the condition of minor diesel catalyst contaminants. For serious cleaning, a strongly scored element must be unambiguously removed.

Finally, once again we recall that the timely cleaning of the diesel car filter is capable of significantly extend the service life of the part and in practice it will be much cheaper full replacement of the specified element to the new one.

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For which the urea is used in the cleaning system of the diesel engine exhaust. The use of adblue reagent in the liquid cleaning system of exhaust gases.

In the last century, the environmentalists began to fiercely fight the owners of oil towers and car companies, accusing them in excess pollution ambient. In order to somehow calm the dissatisfaction of fighters for the purified atmosphere, engineers have developed such an element as a diesel filter. With his appearance in the automotive industry, people stopped breathing soot allocated in the process of combustion of diesel fuel. About this further in the article.

The particulate filter is used in the design of diesel engines. It makes it possible to thoroughly clean the exhaust gases from different unwanted impurities, since it is characterized by a small block structure.

The scene filter delays soot, and then burns it on environmentally friendly technology. The use of the filter makes it possible to reduce the soot particles in exhaust gases to 99.9 percent.

Diesel particulate filter, how it is arranged and where installed

The particulate filter in the car is usually the catalytic neutralizer. In some constructions, this part is combined with a catalyst for oxidative type and is located right behind the exhaust manifold, where the exhaust gas temperature is maximum. Called it with a sabotic coating filter.

The main constructive component of the particulate filter is a matrix, which is made of ceramics (i.e. carbide). The matrix is \u200b\u200blocated in a metal case. The ceramic matrix has a cellular structure consisting of small secting channels, closed alternately on both sides. The side walls of the channels play the role of the filter and have a porous structure.

Causes of contamination of the diesel filter

Despite all its useful qualities, the particulate filter has one essential disadvantage - the need for frequent cleaning. The problem is that the filter is capable of spontaneously cleaned only when moving on high revolutionsAnd it is not always possible for the car owner. Experts recommend after every 150 kilometers to progress the vehicle on the track. But even if this Council is met, the replacement of this detail is inevitable, since the diesel filter cannot be cleaned completely.

Signs of contamination of the particulate filter

There are several basic signs of contamination of the particulate filter:

The scene filter is scored that it faces the car

The big degree of contamination of the particulate filter is able to entail the following undesirable consequences:

1. Engine overheating in a hot period.
2. Reducing the engine resource, resulting in its breakdown.
3. Reducing the power of the diesel engine and increased fuel consumption.

Regeneration of the diesel filter

To restore the performance of the particulate filter, it should be cleaned of its pores from foreign particles. For this, such a procedure is provided as the regeneration of the particulate filter, which is active and passive.

passive (detailed course of work)

Clear the inner surface is thus quite simple. This is provided for by the design of the filter element.

The following methods are applied:

forced by burning

Active regeneration is carried out by force an increase in the temperature of exhaust gases throughout a certain time interval. Soot, accumulated at the same time, oxidizes, that is, burns.

There are a number of methods for increasing the temperature of exhaust gases during active regeneration:

1. Additional fuel injection on the release tact.
2. Late fuel injection.
3. Application in front of an electric heater filter.
4. Heating output gas microwaves.
5. Fuel portion injection immediately before the scene filter.

How to rinse the smboss filter after dismantling

Let's start with the method involving the dismantling of the particulate filter. This washing procedure, as a rule, requires about eight hours. When the work on removing the filter element is over, the housing is completely filled with a special cleaning agent. These fluids are widely represented on the market. The leaders are Pro-Tec, Luffe, Liqui Moly products.

Fluids are made from oil components, most often refer to five-liter canisters. Consumption for effective washing One filter, as a rule, is at least four liters of composition. In addition, the canister can have a special neck in advance, as it will be necessary to connect the hose. Also possible canices already equipped with a finished hose.

The principle of operation of the washing means is that the liquid highly dissolves resin (it is withstanding about eight o'clock), on which the nagar appeared. It is necessary to carefully follow the requirements of the manufacturer, since it is extremely important to wait for the required time for the full influence of the washing to South.

Then the liberated soot simply washed off by the usual jet of water under pressure. Next, the filter is dried and mounted in place. It is important to know that the washing with dismantling allows for the use of only special fluids that affect the resin at the molecular level. It is strictly forbidden to apply other means, since the matrix inside the filter has a fragile platinum layer.

How to rinse the smbed filter without dismantling the filter

The second method is washing the particulate filter without disassembly, that is, all work is carried out right by car. The filter element of the diesel car is equipped with temperature and / or pressure sensors. If the sensor is unscrewed, it is possible to submit a washing agent.

Since the washing is done by car, manufacturers take into account the possible risks of the ignition of the washing composition. Application in such conditions, petroleum products cannot be used. Water and alkaline solutions are recommended for cleaning together with a flushing fluid. Such a liquid is capable of neutralizing malicious alkali after the completion of the cleaning process with a solution. The liquid into the element housing is supplied by a specially designed pistol. A curved or direct probe is also used, an additional dispenser is provided.

Pistol, a set of liquids, probes and sprayers allow you to work in fact with any model of a diesel engine equipped with a sump filter. Washing this method involves the dosed phased supply of the cleaner by means of the sensor hole. Often, the place of installation is the pressure sensor located in front of the element. The car is heated in advance, then allow the filter to cool to an approximate mark of forty degrees Celsius. It is worth noting that the alkaline composition is most effective at such a temperature.

For cleaning, you will need about one liter of fluid, which is left for fifteen minutes in the element housing. The high-pressure spray gun is connected to the curved or direct pronation that is entered into the sensor hole. The cleaner is sprayed with breaks directly to the surface of the filter - ten seconds sprayed, ten seconds of the pause. Working pressure during spraying should be approximately eight bar. It is advisable to rotate the probe when spraying the composition and move back-forward to achieve the best quality of the application of the cleansing agent on the matrix.

Then, in a similar way, spray the rinser, neutralizing and washing the cleaner. It will take about half a liter of cleansing fluid.

The composition is washed off using the same spray gun, similar time intervals are respected between the spray stages. Then I mount the back pressure sensor, launch and warm up diesel. After that, self-cleaning mode is started.

How often do you need to change the diesel filter

The service life of modern particle filters is approximately 120,000 mileage kilometers. Due to the high cost of car owners, as a rule, the sage filters that have developed a resource are not changed, and simply remove them with further flashing the motor control system.

Tips Pros: fuel quality, driving manner

To a premature wear, the driving manner, conditions of movement and, of course, the quality of fuel affect a significant extent. If these conditions are severe for the vehicle, the replacement may need much earlier.

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Such a device as a diesel filter is available in all diesel cars manufactured since 2011 (as well as on a number of models released after 2000 - then it has not yet been a mandatory element, but has already been used by some car manufacturers) in the territories of countries belonging to WTO (standard "Euro-5" adopted by the Customs Union).

New Symbol Filter
Dairy filter after working

The main task of such an element is to maximize exhaust gases from impurities harmful to the environment.

The use of particulate filters made it possible to reduce the content of soot particles in the exhaust diesel cars Almost 100% - or more precisely, by 99.9%.

What is needed and how the car filter is working

Currently, two types of soot cleaners are used in cars:

DPF DPF (Abbreviation from the word Diesel Particulate Filte) For a diesel car, catches soot particles up to 1 microns, which are formed as a result of fuel combustion. Such a filter is characterized by the simplicity of the device, but it requires regular cleaning actions (regeneration).

FAP type filter (Filtre a Particules Reduction) is a more complex device that does not require regular intervention. Regeneration (cleansing) occurs here in automatic mode.

The location of the particulate filter (see Fig. 1) - in the system of output of exhaust gases, behind a catalytic neutralizer. In some cases, it can also be combined with a neutralizer, and then its location is right behind the exhaust manifold.

This is a place where the exhaust gases have the highest temperature. In this embodiment, the device is called a "sabotic coating" filter.

The average resource of the particulate filters is designed for 150 thousand miles. But this european standard. On Russian fuel, according to the reviews of owners and workers of car service, this indicator is reduced almost three times.

At the moment when the on-board computer is issued an error saying that the scene filter clogged, the car owner will need to take one of the following solutions:

1. Full replacement of the particulate filter. Very expensive event. Of course, the price is very dependent on the brand and the model of the car, but in any case, this action is much more expensive than all items below. For example, on BMW, the replacement of the particulate filter will cost approximately 1500 euros.
2. Physical removal of the diesel filter. The procedure is also not cheap, and has a number of shortcomings. It is not enough to just take and cut the filter by replacing the pipe area. On the data coming from the sensors of the Symbhal filters, a number of procedures are tied on-board computer, which means that it will be necessary to replace its firmware. Replacing the firmware does not always happen smoothly, in some cases errors occur (false indication responses, other problems with an on-board computer).
3. Cheating sensor size filter. Lies in the installation separate devicethat emulates normal work Sensors (fake signals) or software removal of the particulate filter from the electronic control unit system. This procedure does not exempt the owner of the car from cleaning the filter itself. However, it significantly prolongs the life of its work or allows you to silently remove the particle filter with the smallest errors in the operation of the onboard computer.
4. Regeneration. The most correct procedure, because the removal of the filter increases emissions of harmful substances into the atmosphere, despite the fact that even without this element, European cars successfully pass technical inspection by russian standards. In this case, the cost of filter regeneration remains acceptable in comparison with the same removal or replacement, although they require periodic repeat.

VIDEO INSTRUCTION

Regeneration Types - Cleaning Methods

In essence, the diesel filter is a container filled with a substance with a porous structure (the ceramics is most often used). When passing exhaust gases through these "honeycombs" of soot and Gare settle on the pores of the filler.

Over time, the passage of exhaust gases is cleaned and the passage of exhaust gases is difficult, which leads to an increase in fuel consumption and reduce engine power, risk risk of various problems.

To restore the filter properties, the regeneration procedure is performed, which can be two types:

1. Active. Pore \u200b\u200bcleansing is due to an increase in temperature inside the filter to 600-1000 degrees Celsius. At such a temperature of the soot completely burns.
2. Passive. Here, the removal of soot occurs also due to its combustion, but the combustion occurs at a temperature of about 350 ° C (this is the normal temperature of the exhaust gases of diesel). For soot oxidation, a special catalyst is needed, lowering the reaction temperature - for example, platinum in filters volkswagen. (The largest catalytic coating filters that were previously mentioned).

Active regeneration requires the fulfillment of special procedures from the car owner, and passive occurs without any participation of the driver's driver.

If regeneration does not have the desired effect, you can always just wash the filter. Flushing of the particulate filter Performed after removing it from the car. The unit is placed in a special chemical composition for a while, and then skip the same composition through a pressure filter.

How to start the regeneration of the scene filter

Increase the temperature inside the sump filter for complete combustion of soot can be one of the following methods (active regeneration):

1. Introduction to fuel mixture Special additives (most often based on cerium), which when passing, along with exhaust gases continue to burn. In this case, the removal of the node of the car is not required. The disadvantage of this method is its low efficiency - the method can give a positive effect only at the initial stage of pollution (no more than 2000 - 3000 kilometers from the moment of the error indicator on the on-board computer panel).
2. Run a special engine operation procedure through an automotive electronic control unit. In this case, the air supply is reduced, the fuel is injected on the release tact (that is, it falls into the exhaust gases unborn in the system). In certain models of cars, original technologies are used, for example, a additive is additionally introduced, or the outflow of burnt gases is reduced, etc.

If regeneration does not help - need repair of scented filter.

It will be removed, will figure it out and refund manually or completely replace in the workshop. Of course, it can be done with your own hands, but it is better to trust specialists.

The regeneration procedure is started most often without user participation:

1. The soot rate increase sensor in the filter is triggered.
2. In the process of movement, the control unit will independently increase the revolutions, reduce the air flow and clears the particulate filter.

But if the attempts of cleaning are not crowned with success, or the level of soot will be critical, the control unit will refuse to clean the attempts and will highlight the error.

In this case, you can try to start the procedure yourself through the control menu of the electronic control unit (EFP) and follow the instructions of the system (if the automatic speed control mode is not supported).

It all depends on the model of the car and the firmware of the EPP. In some cases, it may be necessary to know the knowledge of service codes or connecting external diagnostic devices.

What fluid will help for the regeneration of the diesel auto filter

If you have not become the owner of a car with a sabotic coating filter or built-in automatic regeneration procedure, you can always resort to the use of special services.

You can try to restore the particulate filter, for example, using universal funds:

1. Regeneration catalysts from ARDINA - Diesel Particulate Filter Regeneration AID (poured into a tank with fuel as a additive).
2. Liqui Moly Pro-Line Diesel PartikelFilter Reiniger is a cleaner that requires forced injection, after use it must be neutralized with another solution (Pro-Line Diesel PartikelFilter Spulung).
3. Liqui Moly Diesel PartikelFilter Schutz is another additive that serves as a catalyst.

Video Description

If the car uses the original additive (for automatic feeding from a special tank in the regeneration mode of the particulate filter), then it is necessary to order it from official dealers.

Magazine " BODY"Together with the company Liqui Moly. Tested a new product for cleaning and protecting the sump filters.

With equipped modern diesel cars additional devices Out of the exhaust gases (DPF particulate filters) appeared problems in their work. The smaller the difference in the pressure of the exhaust gases at the input and output of the scene filter, the more efficient the engine works, the fuel is more economical and the environment is minimally contaminated.

However, over all the time, solid soot particles, which are unlawful particles of hydrocarbons, fall into the pores of the walls of the particulate filter, limiting the flow of exhaust gases. The fine particulate powder seems to be burned, however, as the filter clogs, it is increasingly mixed with non-aggravated materials and forms resins. This adhesive mixture is associated with metals sulphates, which are formed when combustion of poor quality motor oil, clogs the diesel filter, creating inside an increased backpressure of spent gases.

The particulate filter can almost completely score in just a few hundred kilometers of run, so the developers have provided a cunning system of its "regeneration" - a process that oats the resins inside the filter, after which their burnout occurs. When the gas pressure at the input and output DPF exceeds permissible normThe engine control unit turns on the burden mode.

The computer enriches the fuel mixture, as a result of which the temperature of the exhaust gases sharply increases. The load on the catalyst increases, and it, in turn, heats up to several hundred degrees, oxidizing the pair of unburned fuel. After that, a hot filter comes to the particulate filter, which burns out the deposits and cleans the filter. The same process can be initiated by a chemical way - by adding a special additive activating the burner. At one time, the Volkswagen concern applied this technology, and today the constructors of Peugeot and Citroen are passionate about such developments.

Car different marks The burden mode is included with quite standard conditions. For this, the car must be in motion, and the engine to work on medium or high revs. In the dense city traffic of suitable conditions, it is not always possible, so the filter continues to delay the soot without self-cleaning, which leads to its complete closure.

Ideally, the life of the particulate filter is 150,000-200,000 kilometers, and self-degeneration occurs only once every 500-700 kilometers. However, in the urban stream, this item comes into disrepair much earlier. Long-term traffic motion, poor-quality fuel, increased ambient temperature and aggressive driving style lead to the fact that the fire process in the filter starts every 50-100 kilometers, which reduces the life of the unit to 50,000-50,000 kilometers. This is explained by the fact that with each regeneration, together with petroleum products, part of platinum from the catalyst will burn out, which significantly affects its residual resource.

In addition, to effectively burn all the resins from the cavities, you need to heat the catalyst up to 600-650 ° C, which is practically unrealistic during the trip. As the soot accumulate inside the system, the difference in the pressure of gases at the inlet to the filter and at the output of it once exceeds the permissible indicators. As a result, when the diesel filter is contaminated by more than 90%, the engine is simply loss of power and stalls.

With the appearance of dashboard The car of the corresponding problem is necessary to urgently turn to the service station. Experienced diagnostics will check the system and give a conclusion. Often, manufacturers do not regulate the repair of contaminated diesel filters, offering only a complete replacement of the part. Thus, systematically poured into its car a poor-quality Russian diesel fuel, the car owner knowingly "signs" on permanent and expensive repairs. Only the cost of the Supil filters themselves top brands exceeds 100,000 rubles.

Of course, on the quality of fuel, the car owner is unable to influence, but it may take care of the preservation of the filter. To do this, Liqui Moly has developed a cleaning and protection program for the sump filters, which includes two fundamentally different cleaning technologies and a special additive to facilitate the filter regeneration.

The first technology allows you to work literally "on the knee" and do not use deficient and expensive diagnostic devices. However, it is a time consuming, requires enough time and implies the removal of the particulate filter. The second technology is faster, but requires the use of complex electronic equipment. As for the results, there is, the effectiveness of the compositions of the products, they are identical. According to Liqui Moly specialists, the cost of this service will not exceed 10,000-15,000 rubles, which is significantly cheaper than the full filter replacement.

The editorial board of the "Body" decided to independently check the new system and demonstrate to readers to work. For this, the edition correspondents chose an independent STR specializing in mercedes-Benz carswhere Dmitry Rudakov, Liqui Moly SpecialistThey offered to show and prove the efficiency of the system on the Mercedes ML model of the third generation.

The difficulty of working with Mercedes models is caused by both the inaccessibility of the most particulate filter itself and the characteristics of the diagnosis. For example, when checking the Volkswagen concern car on the screen of the diagnostic scanner, the filter state is displayed in percentage ratiothat significantly simplifies the decision-making process. Mercedes, on the contrary, only indicates a malfunction, indicating the discrepancies in ideal and real values. Thus, the master must determine the nature of the upcoming repair.

For work, specialist Dmitry Rudakov will first need a cleaner Liqui Moly Pro-Line Diesel Partikel Filter Reiniger and washing / neutralizer Pro-Line Diesel Partikel Filter Spulung.

Cleaning solution must be pouring into a special tank, on which a gun with one of the attached probes is attached. Direct and curved manipulators allow you to work with almost all manufactured cars.

It is necessary to make sure that the temperature of the particulate filter is about 40 ° C, since it is precisely in such conditions that effectively explicitly. Temperature can be seen on the screen diagnostic equipmentHowever, if it does not turn out to be at hand, it is enough to measure the heating of the filter with an optical domestic pyrometer.

In the next one can remove the oxygen sensor, located in front of the particle filter, through which the cleaning liquid will be served. However, in our case, the specialist did not do this, because it is convenient to use another hole on Mercedes. The representative of Liqui Moly removed the catalyst temperature sensor, which is located in the middle of the filter, between the catalyst and the active DPF element. Accessing the cleaning fluid through this hole ensures the correct distribution of the fluid in all cavities.

After test spray, the cleaning composition is fed through the above hole inside the filter for several receptions. During this process, the probe needs to rotate slowly, thereby providing a uniform distribution of the means.

Now you need to wait 15 minutes and in the same way pour inside the wash / neutralizer. After completing cleaning, put the temperature sensor.

To evaporate the residues of the filter from the filter, you need to start the engine and warm the filter to the operating temperature at 300 ° C. After that, using the diagnostic scanner, you need to start the forced regeneration mode. Next within 10-20 minutes you should drive 10 kilometers by car.

If there is no opportunity to leave a hundred, you will have to simply press the gas pedal throughout the same time interval, but it is necessary to do it either on the street or with a connected exhaust gas removal system. Literally after a couple of minutes of engine operation under load exhaust pipe Think thick white smoke. This suggests that the procedure is carried out correctly.

The diagnostic scanner will also help determine how well the filter cleared. To do this, it suffices to check the readings of the exhaust gas pressure sensors at the inlet and outlet of the particulate filter in the percentage ratio before and after the procedure. Also, the effectiveness of the solution can be judged by temperature values.

In our case, the verification of reliability has shown that the temperature of the catalyst in 190 ° C is almost equal to the temperature inside the scene filter - 180 ° C. According to the standards, these readings should not differ by more than 60 ° C.

According to Liqui Moly's calculations, the cost of cleaning the particulate filter can vary within 10,000-15,000 rubles. This amount includes payment of labor, consumables And self-sufficiency of equipment, the price of which is 15,000 rubles. However, it is significantly cheaper than a complete disassembly of a spoiled smbed filter, buying a new filter and its subsequent installation.

According to Dmitry, on business class cars, the procedure for cleaning the particulate filter is advisable to carry together with the oil change and cleaning of the injector, it is desirable to include it in the list regulations Every 10,000-20,000 kilometers. On budget cars it should be done only as needed when an appropriate error appears.

As we have already spoken, the service life of the particulate filter is determined by the frequency of its burns. The more often this procedure occurs, the more catalyst (platinum) flashes irretrievably. Today it became possible to increase the runs between the burns and reduce the process temperature. To do this, Liqui Moly has developed a additive to protect the Diesel Partikel Filter Schutz Diesel Partikel Filter Schutz, which we will describe in detail in a separate material.

One of the disadvantages of diesel engines is a rather high coot content in exhaust gases. Car manufacturers take into account this moment and establish recycling systems and, of course, special seasy filters. The latter require a rather close attention of the owner of the car, and we will tell you in detail how to provide them, and if necessary, replacement.

1 For which the diesel filter is installed - the principle of operation

As mentioned above, diesel fuel In the engine burns with the formation of carbon particles, and the exhaust gases are saturated with solid inclusions of soot. Since the requirements for motor vehicles are constantly growing, it was necessary to capture these particles. It is for this purpose that in addition to catalysts, which are mandatory exhaust systems, special filters are installed.

The system of the system is extremely simple. Exhaust gases pass through the filter unit, in which closed and open channels alternate. In the first, all impurities are sediated, and through the walls, the exhaust falls into the passages that do not interfere with the further output of the gas outside. Soha is the finest dust and not just delayed, but settles in the small cells of the filtering element and gluits carbon particles that, connecting, form resinous droplets. Bonding as a result of soot particles pretty quickly clog the filter.

2 self-cleaning filters - option provided by manufacturers

This option is not present in all brands and models of cars. Budget, for example, do not have the possibility of automatic self-cleaning, but it can be migrated to mechanical way, if you know the principle of operation. The system is functioning using a special sensor, which tracks the degree of blockage of channels, determining the pressure at the input and output. As soon as it reaches a level indicating a decrease in the passability of exhaust gases, a signal is received on the vehicle. In the engine chambers, more fuel is injected, and when it is combustion, the exhaust temperature is rapidly increasing, which allows you to shove the soot in the filter.

There are several other ways compatible with the operation of electronic blocks, and manufacturers use them, based on preference for a specific car model. So, the control unit may provide a later fuel injection signal. Also, after the sensor decreases the electronics about the blockage of the channels, a special electric heater is launched, if it is pre-installed in vehicle. Some models include fuel injection immediately in front of the scene filter for the possibility of afterburning. And finally, in some cars there is a microwave unit used for the same purpose.

Diesel engines can work with varying degrees of intensity and in the city are usually operated on small and medium rates of the shaft. In this case, the channel to block channels may not come from the sensor until the filter element is complete. And the sage afterburning will become impossible. In order to the electronic unit Surely worked, it follows from time to time to raise the turnover of the shaft to the maximum. It is possible to do the same without the presence of a mechanical control unit by lifting the operation of the diesel engine to the limit power, which will lead to a sharp increase in the temperature of exhaust gases. However, this option works far from always and depends on the design of the filtering system.

3 additives as a method of cleaning - are they so effective?

Some brands are supplied with special tanks for additives located near the tank for fuel. Substances that ensure better deposition of soot particles in the filter are injected directly into the benzobak when refueling, which is controlled by electronics. The basis of such additives is cerium oxide, binding small particles into a dense layer on the walls of filtering cells. At the same time, the precipitate is saturated with oxygen, which allows you to more effectively survive it. Approximately in the same way can be supplied with additives the diesel engine on the gasoline engine.

But the entire snag is that in the form of a wave on the walls of the channels transmitting exhaust gases, the oxide of cerium accumulates, over time, clogging the smallest through cells. That is, cleaning the filter from the soot, the additives over time pollute it even more, which is why after 140000, and in some models, even after 80,000 mileage kilometers it is necessary to change the filter completely. To avoid this, it is necessary to wash the channels from time to time manually, for which there are special means and fixtures.

4 Manual flushing - several ways without removing the block

Many experienced car owners clean the diesel engine filter with a pulverizer with a thin spray tube. To begin with, heating the motor, then we give it to cool about up to 40 degrees or a little more. Remove the exhaust gases pressure sensor installed in the exhaust system to the filter. Connecting a compressor or manual pump to a tank with a special washing fluid, insert the spray tube into the sensor hole and pump about 200 grams of the composition in the block. We will wait for about 15 minutes, after which we fill the liquid again. Total need about 1 liter. Be sure to spraying, rotate the spray tube so that the composition falls on everything inner space, plugging into the filter channels.

Next follows the second stage. For primary cleaning, a liquid with a fairly high degree of flammability is used, it can easily flame in the exhaust system when the engine is running. Therefore, it is necessary to wash off and it, for which we use the second composition - neutralizing. It is enough to take only 0.5 liters and introduce the same way by spraying on the entire inner surface. After half an hour, it remains only to screw the sensor in place and warm the car engine so that the remnants of the liquids from heat faster evaporated. It is recommended to further file maximum loadIn order to achieve high exhaust temperatures, regeneration began with additives.

The second method of cleaning the particulate filter on the diesel is somewhat simpler because it does not require a pulverizer or similar tool. Today, special aerosols for cleaning the diesel engine diesel engine are sold in specialty stores for car service. Preparation The same as in the above method - you need to unscrew the pressure sensor installed in front of the block. Now we take the can, the container of which is usually about 400 millilitres, and we guide the nozzle into the hole.

This cleaner is foam, so you need to spray extremely small doses, waiting for some time between them. Often, the remedy is equipped with a probe, which should be distributed by the resulting foam inside the block. Wheeling about half an hour after saturation of the filter, we set the sensor in its socket, pour into the fuel tank and start the engine. Be sure to follow the dosage recommended by the manufacturer.

5 Removing the scored filter - my or replace

All machine models have the ability to remove the filter, although it is a very labor-intensive process. Disconnecting a block with small portions of the exhaust system pipe, it should be placed in a large container, for example, a normal pelvis or tank, then fill in a special cleaning fluid. Sell \u200b\u200bit in special cannors of 4-5 liters, the composition usually contains petroleum products that quickly and qualitatively dissolve the resins binding particles of soot in the channels.

The flushing of the diesel engine filter is performed with their own hands through the pipe from the supply of exhaust gases. The composition is filled through the funnel completely, before filling the block, after which it is necessary to wait at least 8 hours before the complete destruction of the sediment on the walls of the cells. Then connect the hose to the water supply or to the pump, bringing water from a large reservoir, and rinse the block with a strong pressure. As a result, a liquid for flushing a diesel engine filter should not flow through the output nozzle, only pure water without remnants of detergent.

In some cases, it is necessary to open the metal housing of the filter block to remove the inner element for the subsequent washing it, and after installing it back to brew the cut wall again.

Replacing the filter is most often accompanied by the removal of the unit, that is, the usual dismantling of the system of the system, or you can open the housing in which the filter is hidden. In the first case, the procedure is the same as in the case of washing, replacing the entire block completely. The pleasure is quite expensive, but this is the easiest option. If there is a desire to save, you need to purchase only a filter element that will cost cheaper than the entire block.

Autogen or plasmorespace we open the metal case, remove the contaminated filter. Be sure to remember how the end sides of the element with input and output channels are located. Then set the same diagram a new core and carefully place a fragment carved from the wall wall. For cutting and welding, it is more appropriate to pre-take a portion of the exhaust system so as not to perform work directly under the bottom of the car. This method is cheaper than the replacement of the entire block, but more precisely washing, although reliable.

As for the effectiveness of the proposed methods, a complete flushing with dismantling the most productive and allows you to exploit the filter for quite a long time. Flushing with a pulverizer is less high-quality, but quite effective, if you repel from the cost of finance, labor and time. That is, enjoys the greatest popularity. The aerosols are the worst optional option, but the fastest and cheapest.