In response to increasingly stringent emission standards, diesel particulate filter (DPF) technology has emerged. This technology focuses on reducing PM emissions and is widely recognized by the international community as the best solution.

The DPF system mainly consists of two core components: carrier and regeneration. The carrier is responsible for capturing PM particles, while the core of regeneration lies in how to efficiently and safely remove these captured PM particles. Next, we will delve into the DPF technology involved in the upcoming implementation of the new National VI phase.

DPF technology, a passive regeneration strategy initially applied to Mercedes Benz's 3.0L turbocharged engine in 1985, was once controversial due to the issue of excessive tailpipe back pressure leading to reduced engine power. However, with the enactment of the Environment Zones Act in Sweden in the late 1990s, which required heavy trucks to be equipped with DPF, this technology gradually gained attention and development.

After 2000, countries such as Europe, the United States, and Japan successively implemented stricter emission regulations, requiring that particulate matter (PM) in diesel vehicle exhaust must be reduced to 80-90% or more of the bare displacement. For example, Euro IV/V regulations stipulate that particulate matter in exhaust emissions must be below 0.02g/kWh. With the upcoming National VI emission standards, both light and heavy trucks will be required to install DPF.