WHAT IS DPF SYSTEM AND WHY IS IT USED?
DPF (Diesel Particulate Filter) is used in some of the vehicles with Euro 4 emission class, and in all diesel engine turbocharged vehicles with Euro 5 and Euro 6 emission classes, in order to meet the emission requirement (filtering and burning the harmful NOx gas released into the air and releasing it in the form of more harmless gases). is a filter. Silicon carbide (SiC), which is included in the function of the filter, filters the toxic gases released from the exhaust and ensures that less toxic gases come out of the exhaust. In this way, less harmful gases are released into the nature. The exhaust system heats up (approximately 600-700 degrees) depending on variables such as engine speed and vehicle operating time, and the soot inside reacts and burns, thus cleaning the filter automatically. During short distance drives or in cold weather, sometimes the exhaust system cannot reach the temperature to clean the filter. In such cases, the liquid we call DPF fluid is injected into the filter system to reduce the heat required for the reaction and thus the filter can be cleaned at lower temperatures. In fact, errors such as "dpf fluid has decreased, particle fluid is low, additive fluid is at a critical level" seen in vehicles are caused by the decrease in this dpf fluid.
Usage areas, advantages and disadvantages of the 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, designed to protect nature and the atmosphere, has advantages as well as major disadvantages in some cases. The most well-known problem is that this working system malfunctions and repair is not possible or very few people can do it. Replacing this system starts from 3000-4000 TL for class B vehicles and can go up to 15,000 TL depending on the class and price of the vehicle. If it is not repaired, the fault light may constantly turn on as a result of the filter being clogged, the valves may be damaged by putting back pressure on the engine due to the blockage, or the engine may start knocking by missing the time setting, and even in some vehicles, the DPF system does not work and the vehicle knowingly restricts its own power (up to 30% - 40%) and some It is known that their 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.
WHAT IS DPF CANCELLATION?
With DPF removal, two main operations are performed on the vehicle. One of them is to completely delete the DPF parameters from the engine (ECU), the other is to break the filter inside the exhaust or remove it and replace it with an empty exhaust to prevent the exhaust gas from getting stuck in the filter while leaving the engine. As Metadiag, we carry out this process smoothly in our office in Istanbul. According to the protocol supported by your vehicle, the DPF-related parameters are deleted by reading the brain file via OBD or in the table set (the brain is removed from the vehicle, brought to the table and opened), 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 removed. In this way, the DPF system in your vehicle will be disabled, the engine light will not turn on, or problems such as loss of traction due to DPF or failure to start will be eliminated. This process is completely safe and does not cause any damage to the vehicle's brain or engine parts.