In the last century, environmentalists began to fight the owners of oil towers and car companies, accusing them in excessive environmental pollution. 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.

Diesel car filter, why it is needed

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 driving at high revs, and this 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:

1. Significantly increased the consumption of fuel.
2. Significantly reduced the dynamics (that is, the thrust disappeared).
3. Large oil level in the motor.
4. When the engine is working, suspicious hissing is heard.
5. Unstable (neurotic) work of the power unit at idle.
6. On the instrument panel burn icons.
   
7. Systematically, an excessively smoky exhaust of gases occurs.

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:

1. Afterbing fuel particles that have not burned. To do this, inside the particulate filter, a sufficiently high temperature is provided (no less than six hundred degrees), especially when the motor load is maximum.
   
2. Regeneration using special additives into fuel, such as EoLys and urea, which ensure the combustion of soot in conditions of lower temperatures (no more than five hundred degrees).
3. Regeneration using a catalytic coating on the inner surface of the tubes from ceramics. The use of high temperature and catalysts entails the oxidation of soot particles (combustion).

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 efficient washing of 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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