In Europe, they are considered one of the most popular. But in diesel internal combustion engines, as in gasoline, the fuel does not burn completely. As a result, various toxic gases are formed in the exhaust gases. In addition, they also contain soot, because hydrocarbons do not burn completely. In Europe, in the 2000s, environmentalists developed a standard for the level of harmful emissions into the environment. Automakers, in order for their products to comply with these standards, began to install a diesel particulate filter. What it is and how it works, you need to know for those who drive diesels. Today we will try to answer all these questions.
Main Functions
In order to better understand the purpose of these devices, it is necessary to touch on the topic of exhaust gases. Automobile exhaust contains a lot of especially toxic and carcinogenic substances.
So, carbon monoxide, unburned hydrocarbons, aldehydes, sulfur oxides, tetraethyl lead have a very harmful effect on the environment. In addition, in the composition of exhaust gases diesel car, in particular, heavy trucks, soot is contained in large quantities.
In order to reduce the concentration of this component, the design modern car diesel particulate filter introduced. What is this detail? This is something similar to the catalyst in a gasoline engine.
What does the element look like?
So, this device is designed to neutralize soot - a product formed during the combustion process. diesel fuel. There are two types - these are closed (DPF) and closed with the possibility of regeneration (FAP).
For all its simplicity, in fact, these auto parts for foreign cars have a rather complex device. Regardless of the version, the filter is a metal cylinder. It has branch pipes - inlet and outlet. The outlet is connected to the exhaust gas treatment system.
The main filter element is a special matrix made of silicon carbide.
It is enclosed in a metal cylinder. The structure of this matrix is cellular. As for the section of the cells, this section is often square. But cells that have an octagonal shape are more effective.
In addition, the diesel filter has several sensors in its design. This is a pressure difference sensor and an inlet and outlet temperature sensor.
Principle of operation
The size of one soot particle is approximately equal to 0.05 microns. According to the chemical composition, this product is nothing more than ordinary carbon. Retaining these particles by conventional means is very difficult due to the size of the element. To capture soot, it is necessary to use the principle of diffusion. To understand what a typical diesel particulate filter is, what kind of device it is, you need to look inside it.
So, the filter inside is a ceramic matrix. This is a whole series of tubes, while the adjacent ends are closed. Inside this matrix, the exhaust gases come from the side of the motor, however, when the gases enter the tubes, they simply cannot move further. Then, through the walls of the tubes, they enter the adjacent open cavities and then can exit the matrix. In the process of diffusion, even the smallest particles remain inside the filter, which means that it performs its task.
Where is the particulate filter
Finding this item is not difficult. The filter is often installed in exhaust system car.
Due to the design features, the part can be found between the muffler and the catalyst. In some cases, the device can be combined with a catalyst and located directly behind the exhaust manifold. There is a maximum gas temperature, and such a filter has a catalytic coating.
Operating techniques
In order to use it effectively on a diesel engine, the price of which is quite high (about 900 euros), it is necessary to properly operate the car. The thing is that in the process of cleaning exhaust gases, the cells and tubes become clogged with soot. This results in reduced work efficiency. diesel engine.
The throughput of the filter decreases and the resistance to the exit of exhaust gases increases. Many manufacturers, in order to increase the service life of this stock without the need for frequent replacement, have applied a special filter operation algorithm when the fill level is controlled. If the filter is filled so that engine power is lost, filter regeneration starts.
Reasons for the decline in efficiency
There are several reasons why filters get clogged. The main reason is quality When filling a car with low-quality fuel, a large amount of soot is formed - the filter quickly clogs, which reduces its service life.
Another reason is insufficient temperature. So, the soot does not burn completely.
It's all about what a diesel particulate filter is. What is it? It not only traps particles, but also maintains the temperature to burn them. However, it should be said that this happens when the heating of the exhaust gases is high and is not less than 600 degrees Celsius. At lower rates, soot will not burn.
Among the reasons for the decrease in the temperature of gases, there are also several. These are driving modes, traffic jams, violation of the combustion process. So, the temperature in the system will not rise if the speed of movement is low, and the movement is accompanied by frequent stops.
Condition control
In order to be able to control the condition of the diesel engine tract is equipped with instrumentation. It includes temperature and pressure sensors. These elements form signals for the electronic control unit, and it determines whether the filter is full or not. When the element is heavily filled, the cleaning process begins.
How to clean
In order to restore engine efficiency with a full diesel particulate filter, it is enough to use several simple methods to help start self-cleaning. Regeneration can be either passive or active.
In any case, the process occurs through the combustion of soot and the release of tubes and channels.
For the regeneration process, an increase in the level of heating of the exhaust gases, additives or flushing of the particulate filter can be used. Additives will help lower the temperature at which the soot will burn. And washing with the help of special substances will help clean the filter.
Passive regeneration method
Such cleaning can be carried out directly by a motorist. The corresponding indicator will inform about the need for regeneration. It is also necessary to start this process if the dynamics or engine power decreases.
The most important thing is to provide a temperature increase for the exhaust gases. This is done by driving the vehicle with a full load. It is enough to drive 30-40 km so that the filter is completely cleaned and all the soot burns out. The second option is the use of special fuel additives.
Active regeneration
This mode can be started automatically by the ECU controller. To do this, the electronics analyzes information from the temperature sensor and the pressure sensor. He informs the electronic unit control that the filter is clogged, and the sensor reports the temperature. If it is not enough for the soot to completely burn out, then the ECU can additionally inject fuel during the exhaust gas exhaust process. This will burn the soot in the exhaust. It also allows you to raise the temperature to the desired level.
If there is other equipment in the exhaust tract that also increases heat, then the ECU can use them.
flushing
This procedure requires special fluids.
The procedure itself as a whole depends only on the type of remedy.
So, the filter is removed and its holes are closed. Then, the cleaning liquid is poured inside in such a way as to fill the entire volume of the filter. Next, the product must be left alone for ten hours, while shaking the filter from time to time. After that, the part is washed with warm water and installed back on the car. There are several types of liquids, and each has its own flushing method. This should be remembered before performing these procedures.
Flushing and cleaning will help extend the life of the element, because replacing the particulate filter is a very expensive pleasure.
But sooner or later the time will come. It is recommended to change filters after 180 thousand kilometers.
The wear of this design is primarily affected by driving conditions, fuel quality, as well as driving style. If the machine is experiencing significant loads, then the replacement of this element may be required earlier.
So, we found out what this part is used for in a car. particulate filter, like other auto parts for foreign cars, is an important detail of a modern car. This element improves the ecological situation in the world, and this is people's health. High-quality ecology - a healthy society and happy children.
What is a particulate filter and why you need it, you can read in one of our articles - link
On this page we will try to describe the main symptoms indicating a malfunction of the diesel particulate filter system (the manufacturer is not important - we will consider the general problems inherent in all cars with EURO-4 and higher standards). After all, when operating a modern diesel car in our modern conditions, especially within the city, particulate filters often fail already at a mileage of about 70-90 thousand km, and problems with them sometimes begin earlier, already at 40-60 km. run.
Why particulate filter fails so quickly:
Here it is just worth remembering the device of the filter itself and its principle of operation. The filter is always installed behind the exhaust manifold, in close proximity to the engine and the exhaust gases pass through the filter before entering the rest of the exhaust system and further into the atmosphere. The main filter element of the particulate filter is a ceramic matrix, usually made of silicon carbide. It has a cellular mesh structure inside and porous channel walls that act as filters and trap soot particles from engine exhaust gases. Over time, the filter begins to become clogged with soot, but the system provides for the possibility of cleaning the particulate filter (called regeneration). This function is controlled by the engine ECU, which interrogates a number of sensors (differential pressure sensors before and after the particulate filter and temperature sensors) and, based on their readings, the ECU activates regeneration.
I would like to note that low-quality fuel also greatly affects the resource particulate filter and the engine as a whole. The amount of soot directly depends on the sulfur content in the fuel, and with its overestimated parameters, the filter clogs faster. get worse.
There are two types of regeneration - passive and active.
Passive regeneration is more effective and usually occurs when driving for more than half an hour in an extra-urban cycle at engine speeds of about 2500 rpm. During passive regeneration, the soot in the filter is oxidized due to the catalyst and the high temperature of the exhaust gases (passive soot regeneration occurs only when constant temperature 350-550°C). Such regeneration is more efficient and if the car is operated in suburban conditions, there is no doubt that the particulate filter will last much longer.
In city conditions and heavy traffic, it is almost impossible to warm up the particulate filter to such a temperature during normal driving, therefore, when the filter is clogged, the ECU uses active regeneration, injecting diesel fuel into the engine in excess (at the same time from exhaust pipe on the idling there is white smoke and the speed can be slightly overestimated), in order to heat the particulate filter to a temperature of 600-650 ° C. When this temperature is reached, the soot particles in the filter react with oxygen to form harmless carbon dioxide. But such regeneration is less effective, so often a "city" diesel car already has problems with the filter at very low mileage. In addition, the car may not include regeneration at all for a number of reasons - an active error in the ECU, an incorrectly closed tank cap, a malfunction of the USR valve, etc.) and then the particulate filter will become unusable very soon and the ECU, based on the readings of the sensors and calculating the limit clogging of the filter will write a permanent indelible error on it and the car will only move in emergency mode (up to 3000 rpm without turning on the turbocharger). In this case, the filter will need to be replaced with a new one or particulate filter software removal and its physical removal.
Of course, we should not forget about the quality of fuel, often sold at gas stations in our country, especially diesel fuel, because the quality of diesel fuel is a very important factor for all modern high-pressure diesel engines with direct fuel injection.
The main disadvantages when operating a vehicle with a faulty particulate filter:
power loss
increase in fuel consumption
due to severe clogging of the filter, the exhaust gas recirculation (EGR) system "cokes" much faster, which leads to the failure of an expensive valve, and in some cases, a turbocharger
the engine runs in emergency mode "for wear", the turbocharger does not turn on and the speed develops up to 3000 rpm. - as a result of this, the automatic transmission receives insufficient torque from the engine and controls packages with increased load (shocks when switching)
if the clogging of the filter is close to critical, and the car continues to be used, then the engine may fail
Symptoms indicative of possible malfunction particulate filter and its clogging and the need particulate filter removal :
The appearance of increased fuel consumption, frequent regeneration ( White smoke when parked at idle indicates ongoing active regeneration)
Reduced engine power and thrust
H erratic engine operation and increased smoke during operation
W whistling sound when engine is running
Behind elevated level engine oil in the engine(subject to the norm)
Engine transition in emergency mode (up to 3000 rpm without normal operation turbocharger).
Indication on dashboard:
part of the car on the instrument panel has particulate filter indicator- usually it lights up or starts flashing when there is a malfunction, sometimes the CHECK-ENGINE indicator flashes.
All the signs indicated here are not one hundred percent the cause of a defect in the particulate filter system, and in order to fully identify the problem, before proceeding with any intervention in the car, it is necessary to make a qualified car diagnostics. After identifying the problem by a specialist, you will understand whether in this case it is necessary to change or remove particulate filter
.
In the photo: A worn out and clogged particulate filter, cut transversely.
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On the cars with a diesel engine, a particulate filter has been used as part of the exhaust system since 2000. With the introduction of Euro 5 standards in January 2011, the use of a particulate filter on passenger cars with a diesel engine is mandatory.
Diesel particulate filter (in the English version of Diesel Particulate Filter, DPF, in the French version of Filtre a Particules, FAP, in German version RubPartikelFilter, RPF) is designed to reduce the emission of soot particles into the atmosphere with exhaust gases. The use of a filter makes it possible to reduce soot particles in exhaust gases by up to 99.9%.
In a diesel engine, soot is formed when fuel is not burned completely. Soot particles have a size of 10 nm to 1 µm. Each particle consists of a carbon core, to which hydrocarbons, metal oxides, sulfur and water are connected. The specific composition of soot is determined by the mode of operation of the engine and the composition of the fuel.
In the exhaust system, the particulate filter is located behind the catalytic converter. In some designs, the particulate filter is combined with catalytic converter oxidizing type and is located immediately after the exhaust manifold where the temperature of the exhaust gases is maximum. It's called a catalytic coated particulate filter.
Main constructive element The particulate filter is a matrix that is made of ceramic (silicon carbide). The matrix is placed in a metal case. The ceramic matrix has a cellular structure consisting of channels of small cross section, alternately closed on one side and the other. The side walls of the channels have a porous structure and play the role of a filter.
In cross section, the cells of the matrix have a square shape. More perfect are the input cells of the octagonal shape. They have a larger surface area (compared to outlet cells), allow more exhaust gases to pass through and provide a longer diesel particulate filter life.
In the work of the particulate filter, two successive stages are distinguished: filtration and regeneration of soot. During filtration, soot particles are captured and deposited on the filter walls. Small soot particles (from 0.1 to 1 µm) are the most difficult to capture. Their share is small (up to 5%), but these are the most dangerous emissions for humans. Modern particulate filters retain these particles as well.
Soot particles accumulated during filtration create an obstacle for exhaust gases, which leads to a decrease in engine power. Therefore, periodically cleaning of the filter from accumulated soot or regeneration is required. A distinction is made between passive and active regeneration of the particulate filter. In modern filters, as a rule, passive and active regeneration are used.
Passive particulate filter regeneration is carried out due to the high temperature of the exhaust gases (about 600 ° C), which is achieved when the engine is running at maximum load. Another way of passive regeneration is the addition of special additives to the fuel, which ensure the combustion of soot at a lower temperature (450-500°C).
Under certain engine operating modes (light load, city traffic, etc.), there is insufficient heat exhaust gases and passive regeneration cannot occur. In this case, active (forced) regeneration of the particulate filter is carried out.
Active particulate filter regeneration It is carried out by forcibly raising the temperature of the exhaust gases for a certain period of time. The accumulated soot is oxidized (burns out). There are several ways to increase the temperature of the exhaust gases during active regeneration:
- late fuel injection;
- additional fuel injection on the exhaust stroke;
- use of an electric heater in front of the particulate filter;
- injection of a portion of fuel directly in front of the particulate filter;
- heating of exhaust gases by microwaves.
The design of the particulate filter and the systems that ensure its operation are constantly being improved. Currently, the most popular particulate filter with a catalytic coating and particulate filter with a system for introducing additives into the fuel.
Particulate filter with catalytic coating
Diesel particulate filter with catalytic coating applied to automobiles Volkswagen Group and a number of other manufacturers. In the operation of a catalytic coated particulate filter, a distinction is made between active and passive regeneration.
During passive regeneration, soot is continuously oxidized due to the action of the catalyst (platinum) and the high temperature of the exhaust gases (350-500°C). The chain of chemical transformations during passive regeneration is as follows:
- nitrogen oxides react with oxygen in the presence of a catalyst to form nitrogen dioxide;
- nitrogen dioxide reacts with soot particles (carbon) to form nitric oxide and carbon monoxide;
- nitric oxide and carbon monoxide react with oxygen to form nitrogen dioxide and carbon dioxide.
Active regeneration occurs at a temperature of 600-650°C, which is created using the diesel control system. The need for active regeneration is determined on the basis of an assessment of the capacity of the particulate filter, which is carried out using the following sensors of the diesel management system: air mass meter; exhaust gas temperature before the particulate filter; exhaust gas temperature after the particulate filter; pressure drop across the particulate filter.
Based on the electrical signals from the sensors, the electronic control unit performs an additional injection of fuel into the combustion chamber, and also reduces the air supply to the engine and stops the exhaust gas recirculation. In this case, the temperature of the exhaust gases rises to the value required for recirculation.
Diesel particulate filter with fuel additive system
The particulate filter with a system for introducing additives into the fuel is a development of the PSA concern (Peuqeot-Citroen). Since the pioneers in the use of additives for regeneration are the French, the name FAP filter (from the French Filtre a Particules) has stuck to the filter. A similar approach is implemented in particulate filters from other automakers (Ford, Toyota).
The system uses an additive containing cerium, which is added to the fuel and ensures the combustion of soot at a lower temperature (450-500°C). But even this exhaust gas temperature cannot always be reached, so the system periodically performs active regeneration of the particulate filter. The diesel particulate filter is usually installed separately after the catalytic converter.
The additive is stored in a separate tank with a capacity of 3-5 liters, which is enough for 80-120 thousand kilometers (filter service life). Structurally, the tank can be located in the fuel tank or outside it. The additive level in the tank is controlled by a float-type sensor. The additive is supplied to the fuel tank by means of an electric pump. Additive supply is carried out at each refueling fuel tank proportional to the amount of fuel supplied. The start and duration of the additive supply is regulated by the engine control unit (in some designs, a separate electronic unit).
A side effect of using the additive is that during combustion it settles in the form of ash on the filter walls and is not removed from it, which reduces the life of the device. The service life of a modern diesel particulate filter is 120,000 km. Manufacturers declare the release of a filter with a resource of 250,000 km in the near future.
Due to the high cost, exhausted particulate filters are usually not replaced by car owners, but removed with subsequent flashing of the engine management system.
Experienced motorists look at the particulate filter (DPF) as an absolutely unnecessary element. Its function is to reduce harmful emissions into the environment. Drivers treat the component indulgently, as specifications It doesn't improve the engine. Passing through the filter, the exhaust gases encounter serious resistance, to overcome which the motor must spend a certain amount of power. This is just one of the reasons why drivers do not like soots.
What is a particulate filter on a car?
The DPF traps soot particles, which contain diesel engine exhaust gases. Since 2009, filters have become mandatory, before that they were used only on heavy trucks. They reduce the content of harmful substances in the exhaust by 90%. Soot settles on the walls of the component, which eventually leads to clogging - there is a need for cleaning (regeneration). The method of cleaning depends on the type of element. The following types of filters are common:
- with a catalytic coating (consists of a ceramic matrix with channels that filter the exhaust);
- with active recovery (contains an additive that is automatically injected into the fuel when electronic system determine the presence of contamination).
The additive of the self-cleaning element contains cerium, a chemical element that contributes to the destruction of soot deposits. Additive reserves must be replenished every 80,000 km. The additive is consumed faster if low-quality fuel is used.
Particulate filter: principle of operation and device
The size of soot particles is very small. They are 90% carbon, and it is almost impossible to retain them by conventional means, so diffusion is used in the filter device. The matrix consists of a network of tubes, the ends of which are closed on different sides. Soot comes from the engine side. Its particles cannot pass further - they penetrate into neighboring channels through the filter walls, after which they leave the matrix. During the passage from one channel to another, even very small particles are retained.
The Sazhevik looks quite simple, although its device can hardly be called such. It looks like a metal cylinder. To connect the cylinder to the cleaning system, pipes are located on both sides of it. Matrix inside the cylinder. Sazhevik also contains:
- pressure meter;
- temperature sensor.
Methods for installing a soot planter are different - it depends on the design of the component. Both matrices with a catalytic coating inside and conventional ones are used. In the second case, you have to put a catalyst on the engine.
Where is the particulate filter located?
The diesel particulate filter is located in the exhaust pipe. Due to the design features, the part can be placed behind exhaust manifold. The exhaust temperature there is at the maximum level, so the device has a special coating and is connected to the catalyst.
It can also be located between the muffler and the catalyst.
Types of particulate filters
For soot regeneration, two types of filters have been developed.
Soot with catalytic coating
The device is placed next to the motor. A high temperature must be created at the inlet. This element has a ceramic matrix, consisting of many small channels, which are arranged so that through one row the ends are either open or closed to receive exhaust gases. Porous walls create a filtering effect. Passing through them, soot settles, then undergoes oxidation by a catalyst.
Soot particles are a solid matter that gradually accumulates in the filter. Therefore, the filter must be cleaned periodically. Regeneration can be passive or active. With passive regeneration, the harmful substances in the soot are converted into harmless carbon dioxide after contact with oxygen. Active regeneration is a complex process, followed by two sensors at once.
Automatic planter
It is located behind the catalytic converter. The use of additives allows you to increase the exhaust temperature to a maximum, as a result, soot is neutralized. The sensors are triggered as soon as the filter is filled with soot deposits. The matrix is made of a material that can withstand elevated temperatures for a long time.
Regeneration
During regeneration, the soot particles that clog the membrane are burned. The cleaning process itself involves increasing the temperature to such a level that the pollution occurs. There are 2 types of membranes - FAP and DPF. FAP is located farther from the motor. Here, the exhaust temperature is not high enough to strongly heat up the contaminants, so a special additive containing cerium is used. It heats the gas to a critical temperature, which contributes to the destruction of the blockage. Cerium is in the additive in the form of microgranules.First, under the influence of gases, the shells of the granules evaporate, then cerium is released. Then, when it hits the membrane, ignition occurs, and the temperature of the gases rises greatly. Warming up is local, so it is safe for the system. Of course, the ceramic grating is gradually destroyed, but this process is very long.
DPF are located close to the motor. Therefore, no additional devices are required to maximize the heating of the gas. Hot gases immediately enter the filter, burning off the soot. Such a procedure can only be carried out when driving at full speed, so the car sometimes needs to be accelerated to the maximum.
It is not necessary to carry out the regeneration procedure every day - start from the intensity of the formation of soot deposits.
A clogged soot can not be used, because over time it will destroy the engine. Service centers have equipment that starts the process of forced regeneration. But this will not work if the filter is clogged beyond the norm. Here it is already necessary to flush with special means, which will remove the bulk of the deposits. Flushing can be done in one of 2 ways:
- partial flushing (element is not removed);
- deep flushing (implying the removal of the element).
Partial flushing is carried out with a spray gun, a tube and a special agent. You will also need a compressor that will create the necessary pressure. We remove the temperature sensor, open access to the filter and clean it. One procedure takes up to a liter of cleaning liquid, which is usually used as NUNAP MP 131. Then we return the sensor to its place.
When deep flushing, remove the element completely, rinse it special tool- for example, DPF Cleaner. The active liquid neutralizes soot deposits, and they are easily removed by water supplied under pressure. Cleaning is more effective if it is carried out with a compressor. After cleaning, dry the filter element, then put it in place.
Flushing does not always completely destroy the blockage. If this fails, it is better to buy and install a new element.
Washing agents contain substances harmful to the skin, so the procedure should only be carried out with protective gloves.
Removing the particulate filter: consequences
Replacing the filter element is an expensive procedure, so some prefer to simply remove the component. The fact that there may be negative consequences does not stop anyone. According to the rules, before removing the element, you need to reflash the control unit - otherwise the emergency mode will “burn”.
The flashing procedure is best done in service centers - this is a very responsible job. Here's what the driver wins:
- The resistance to the release of gases will be eliminated, so the motor power will increase.
- No need to constantly spend money on new filters.
- Fuel consumption will be reduced.
After removing the filter element, you can forget about driving your car to Europe - the car warranty is void. Turbine speed can increase to such a state that their whistle will be heard. At high speed, pieces of soot will fly out of the exhaust pipe - this can be observed with the naked eye. Emission indicators will also worsen due to the fact that you have to cut out the catalyst, and illiterate flashing may well lead to burnout of the exhaust system.
The soot filtration system is designed to improve environmental performance. Most likely, someday for the lack of such a system in the car will be fined. So why delete it? The car will go a little faster, but there are so many negative consequences that it is clearly not worth it.
Compliance with environmental standards often turns into additional problems for vehicle owners due to the complexity of the design of individual components and assemblies of the machine. In particular, particulate filters installed on modern diesel engines become clogged over time and quickly become unusable, due to which certain malfunctions appear in the operation of the machine. What to do in this case? There are two ways out: either remove the particulate filter or clean it, but for some reason many motorists choose the first option.
Why is the particulate filter removed
A heavily contaminated diesel particulate filter negatively affects the performance of the entire car, and what owner will like that his car has decreased traction, fuel consumption has noticeably increased, and besides, annoying control lights are constantly lit. Of course, you can solve the issue by replacing the part, but you will have to pay a fairly decent amount for this. In such a situation, the only reasonable way out, at least from the point of view of many motorists, is to completely remove the particulate filter from the car, but not everyone thinks about the possible consequences.
According to experts, the opinion that the extraction of this part favorably affects the “well-being” of the iron horse is nothing more than a myth, because even despite temporary improvements in dynamics, problems will still appear over time.
Diesel particulate filter removal methods
There are two ways to remove a particulate filter from your car:through the physical removal of all components of the part, or through software deactivation, which is a more competent approach to the issue.
In the first case, you need to get to the location of the DPF and, using a grinder, cut out the block with the filter element itself and the catalyst. After that, a special flame arrester is installed in their place or an ordinary piece of pipe is welded. Mounting a flame arrester allows you to increase the durability of the exhaust system, in particular, and the muffler. Moreover, thanks to this device, the engine power is significantly increased, and the exhaust sound becomes much quieter.
The software removal of a diesel particulate filter is considered a more humane method of dismantling a part. It is used when they want to avoid errors in the operation of the engine ECU, which is achieved by adding an exhaust temperature sensor and a lambda probe to a piece of welded metal pipe. Also, after removing the particulate filter, you will have to perform chip tuning of the car, which eliminates black combustion products.
After completing the specified procedure, you will notice a decrease in the "capriciousness" of the motor in terms of maintenance, although you will have to forget about the manufacturer's warranty. Station DPF Removal Procedure Maintenance it will cost about 25-30 thousand rubles, but it all depends on the complexity of the work and the location of the element itself.
What happens if you remove the filter
By removing the clogged filter from your vehicle, you, of course, will solve the problem with power and fuel consumption, but at the same time, some other inaccuracies in the car will appear. extraneous sounds when running power unit and incorrect display of the state of the part - these are just a few of them. The system will see that the diesel particulate filter is not clogged, which simply cannot be, then decides that it is simply faulty, and puts the car into "emergency" mode. To avoid all these nuances, you should reprogram (or, as people say, “reflash”) the control unit, otherwise the ECU will constantly generate fault codes. There are two main options for how to do this.
In the first case, take the “firmware” of the version of the vehicle on which the particulate filter was not installed and upload it to your control unit. However, no one can know for sure what is not yet in this firmware, and what consequences of removing the particulate filter will “come out” here. It is likely that the standard parameters of the car will not be able to "get along" with the new changes, as a result of which any other function that was not in the old program may stop working.
You can download the required firmware on the Internet, but in this case it will be impossible to predict the result at all. If such firmware works for some time, then no one will be able to guarantee its proper functioning after a year. Floating speed, an ever-shaking speedometer needle and uneven injection - not all possible consequences use of low quality software.
Most the best way Solving a software problem is installing programs that the manufacturer uses, but supplemented by some changes made by an experienced programmer. Such software is downloaded to the control chip via special device- programmer.
Did you know? The particulate filter is the development of Peugeot, who installed the first ever diesel particulate filter on their 607 car. model range 2000 year.
There is another way to avoid the problems associated with removing the particulate filter. You are required to install an emulator that would simulate the presence of a new particulate filter in the machine's system. Such an electronic device sends signals identical to those of a real filter, thus deceiving the on-board computer.
Advantages and disadvantages of filter removal
Why remove the particulate filter, you have already learned, but you should always consider not only the advantages, but also the disadvantages of any action performed. The positive aspects of removing the particulate filter include:
increase in engine power and thrust (can be achieved by reducing the resistance in the exhaust pipe);
No need for expensive maintenance and filter cleaning;
Saving motor resources due to the lack of regeneration processes;
The absence of pop-up errors that are associated with the operation of the particulate filter.
As for the shortcomings, there are not so many of them. The main one is that the car ceases to comply with Euro-4 / Euro-5 standards, which means that the vehicle will no longer pass the technical inspection, at least without additional material costs. True, if you look at the problem from the other side, then this nuance will not be so significant, especially in comparison with the cost of the part replacement procedure. We should not forget about the above-described technical problems associated with the absence of a particulate filter, which appear as a result of its removal from the vehicle.