What does DPF exceeding the limit mean?

[DiJessica]

DPF exceeding the limit refers to emissions exceeding the standard. DPF (Diesel Particulate Filter) is a device installed in the exhaust system of diesel vehicles to reduce particulate matter in the exhaust through filtration. Here is relevant information: Function: The diesel particulate filter can effectively reduce particulate emissions. It first captures particulate matter in the exhaust gas and then oxidizes the captured particles to regenerate the particulate filter. The so-called filter regeneration means that during long-term operation of the DPF, the gradual accumulation of particulate matter in the filter will cause an increase in engine backpressure, leading to a decline in engine performance. Working process: The diesel particulate filter (DPF) captures particles through a hybrid filtration device combining surface and internal mechanisms, such as diffusion deposition, inertial deposition, or linear interception.