What does DPF regeneration mean?

[DiChristian]

DPF regeneration refers to the process where the accumulated carbon particles in the particulate filter gradually increase, leading to higher exhaust backpressure that affects engine performance. The process of burning off these collected carbon particles through exhaust heating is called regeneration. Here is some relevant information about DPF: 1. DPF generally uses a wall-flow filter: It relies on alternately blocking the inlet and outlet of the carrier pores to force the airflow through the porous walls, thereby capturing the particles. The front-stage DOC catalyst oxidizes NO generated during diesel engine combustion to form NO2. 2. Inside the DPF, the NO2 molecular bonds break at around 250°C: The released oxygen reacts with the captured particles, burning them into CO2. Most normal driving conditions of diesel engines can meet the regeneration temperature required in the DPF, thus effectively removing PM.