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In the case of older filters in particular, the question is whether this measure makes sense, because these filters do not remove the fine dust that is hazardous to health.Īnother problem with the DPF is that the combustion process only takes place at medium-high temperatures, at which chemical transformations take place, which in turn can lead to toxic substances. After that, the DPF must be replaced at high cost. A small amount of ash remains in the diesel particulate filter, which accumulates in the diesel particulate filter over time and blocks up the DPF. The soot collected in the DPF must be burned regularly. However, visible soot in vehicles is less of a health hazard because these particles cannot penetrate deep enough into the lungs. The actually harmful fine particles were not filtered out with these filters. Unfortunately, the problem with many diesel particulate filters is that the first generation filters did not pay attention to the particle size, but to the amount of filtered exhaust gas. This is why a technology that can filter these particles from the exhaust gas was required, especially for inner cities.
![deleting dpf off cat motor deleting dpf off cat motor](https://d2j6dbq0eux0bg.cloudfront.net/images/34148088/2448484670.jpg)
The exhaust gases of newer vehicles are causing ever finer soot particles.