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DPF (Diesel Particulate Filter), in some of the vehicles with Euro 4 emission class, in order to meet the emission requirement of all diesel engine turbocharged vehicles with Euro 5 and Euro 6 emission classes (the harmful NOx gas released into the air is filtered and burned and released as more harmless gases). is a filter. Silicon carbide (SIC), which is in the function of the filter, filters the toxic gases released from the exhaust, allowing less toxic gas to come out of the exhaust.


Thus, less harmful gas is released to the nature. The exhaust system is heated by variables such as engine speed, operating time of the vehicle (approximately 600-700 degrees) and the soot inside is burned by reacting, and thus the filter is self-cleaned. In short distance driving or in cold weather, sometimes the exhaust system cannot reach the temperature to clean the filter, in such cases, the liquid we call dpf liquid is injected into the filter system, reducing the heat required for the reaction and thus the filter can be cleaned at lower temperatures. In fact, errors such as "dpf fluid decreased, particle fluid low, additive fluid at critical level" seen in vehicles are caused by the decrease in this dpf fluid.

Usage areas, advantages, disadvantages of DPF system

As we mentioned in the article above, the DPF system is available in some of the vehicles with Euro 4 emission class, and in all diesel vehicles with Euro 5 and Euro 6 emission classes. This system, which is built to protect nature and the atmosphere, has advantages as well as great disadvantages in some cases. The most known problem is that this working system malfunctions and it is not possible to repair it or very few people do it. Changing this system can start from 3000-4000 TL for B class vehicles and go up to 15.000 TL depending on the class and the price of the vehicle. If it is not repaired, the fault lamp constantly lights up as a result of the filter clogged, the valves can be damaged by backpressing the engine due to the blockage, or the engine is knocked out by missing the time setting, and even in some vehicles, the vehicle deliberately restricts its own power (up to 30% - 40%) and some It is known that the vehicles do not work because the filter is full. Since this system to be repaired or replaced will not be as compatible and trouble-free as the system installed at the factory, most people cancel it.


With DPF cancellation, 2 main operations are performed on the vehicle. One of them is to completely delete the DPF parameters from the engine (ECU) and the other process is to break the filter in the exhaust or to prevent the exhaust gas from getting stuck in the filter by removing it and replacing it with an empty exhaust. As HEXA LOGI, we carry out this process in our office in Istanbul without any problems. According to the protocol supported by your vehicle, the brain file is read via OBD or on the table set (the brain is removed from the vehicle and brought to the table and opened) and the parameters related to the DPF are deleted and the edited file is written back to the ECU. After this process, the filter in the exhaust is broken or replaced with an empty system, and the filter at the exit of the exhaust gas is canceled. In this way, the dpf system will be canceled from your vehicle, the engine light will not turn on, or problems such as loss of traction due to DPF and not starting will be eliminated. This is a completely safe operation and does not cause any damage to the vehicle's brain or engine components.

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