DPF regeneration

There are two methods for regenerating a particulate filter (DPF): active regeneration and passive regeneration. Active regeneration refers to using external energy to increase the temperature inside the DPF, causing the particles to ignite and burn. When the temperature in the trap reaches 550 ℃, the deposited particles will oxidize and burn. If the temperature does not reach 550 ℃, excessive sediment will clog the trap. At this time, external energy sources (such as electric heaters, infrared heating, microwave heating, changes in burner or engine operating conditions) need to be used to increase the temperature inside the DPF and oxidize and burn the particles. Passive regeneration refers to the use of fuel additives or catalysts to reduce the ignition temperature of particles, allowing them to ignite and burn at normal diesel engine exhaust temperatures. Additives (such as cerium, iron, and strontium) should be added to the fuel in a certain proportion. Excessive additives can affect the lifespan of DOC, but insufficient additives can lead to delayed regeneration or increased regeneration temperature. MUX1.9T is regenerated through combustion.

DPF can shut down the engine at any time during the regeneration process to interrupt regeneration. When you turn on the engine, the system will also perform a detection and continue regeneration when the triggering conditions are met. You can completely ignore its existence during normal driving, it works fully automatically.

During DPF regeneration, due to the need for high-temperature combustion of particles, the exhaust will be different from usual, and sometimes a smell may be smelled. This is a normal phenomenon and there is no need to worry.

The circular device of the middle metal is the DPF on the MUX