DPF stands for Diesel Particulate Filter. Installed in the exhaust system of diesel vehicles, it is a device that filters and reduces particulate matter in the exhaust. It also has two regeneration system technologies, active and passive.

It captures particles through surface and internal mixed filtration devices such as diffusion precipitation, inertial precipitation, and linear interception. DPF particulate filter can effectively purify 65% -90% of the particles in exhaust gas, and is one of the most effective and direct methods for purifying the particles generated by diesel vehicles. It has been commercialized internationally.

Although this PDF can filter most particles, its collector also involves regeneration issues during operation. Some friends may ask: What is regeneration? For example, particles can accumulate in the filter, causing an increase in exhaust back pressure in the diesel engine. If the exhaust back pressure exceeds a certain value, the diesel engine will begin to deteriorate, leading to a decrease in engine power and fuel efficiency. Therefore, it is necessary to promptly remove sediment particles to restore the filter to its original working state, which is also known as "regeneration" as mentioned above.

In order to meet the increasingly strict emission control standards in China, diesel engine exhaust after treatment technology, as an important component of the entire diesel engine emission control system, is receiving increasing attention. Tianjin, Beijing, and Shenzhen have successively issued relevant regulations, requiring diesel vehicles with National V standards to be equipped with DPF before they can be registered.

The increasingly strict environmental standards nowadays are not only the responsibility of one person, but also the responsibility of all of us. So, when purchasing a vehicle, friends must pay attention to whether the vehicle is equipped with a DPF diesel filter. If not, the vehicle management office will not license it.