DPF, also known as diesel particulate filter, is a device installed in the exhaust system of diesel vehicles. Its main function is to filter and reduce particulate matter in the exhaust to enhance environmental performance. DPF has two regeneration system technologies, active and passive, and its full English name is Diesel Particulate Filter.

DPF works through a filtering device that mixes surface and interior to capture carbon particles, smoke, and oil mist generated during engine combustion. These filtration devices include diffusion precipitation, inertial precipitation, and linear interception technologies, which effectively capture particulate matter and prevent it from entering the atmosphere and causing pollution.

Active regeneration system technology can remove particulate matter from the filter through heating and exhaust, while passive regeneration system technology maintains the cleanliness of the filter by burning particulate matter. The installation and use of DPF can not only effectively improve the environmental performance of automobiles, but also reduce the impact of exhaust gas on the environment.

Overall, DPF is an efficient diesel exhaust purification device that not only improves the emission performance of vehicles but also protects the environment by capturing and filtering particulate matter.