The full name of DPF is Diesel Particulate Filter, also known as Diesel Particulate Filter or Diesel Engine Particulate Capture Regenerator. This is a key component in the emission system of diesel engines, mainly installed in the exhaust system of diesel vehicle models.

major function

The main function of DPF is to capture and reduce particulate matter generated after diesel combustion, such as soot and hydrocarbons. If these particulate matter are directly emitted into the atmosphere, they will pose a serious threat to the environment and human health. The filtering effect of DPF can effectively improve the quality of vehicle exhaust emissions and reduce air pollution. At the same time, particulate matter causes significant wear on internal components of the engine, and the application of DPF can reduce this wear and extend the service life of the engine.

Working principle

DPF captures particles through surface and internal mixed filtration devices, including diffusion precipitation, inertial precipitation, or linear interception. It can effectively purify 70% to 90% of particles in the exhaust, making it one of the most effective and direct methods for purifying diesel particulate matter.

Regeneration mechanism

During the operation of the DPF filter, particles will accumulate in the filtration device. When the particles in the trap accumulate to a certain extent, it will cause an increase in exhaust back pressure of the diesel engine, thereby affecting the performance of the engine. At this point, it is necessary to carry out DPF regeneration, which means timely removal of deposited particles to restore the filter to its original working state.

Overall, DPF plays an important role in improving exhaust emission quality and reducing air pollution. However, its high cost, complex maintenance, and certain impact on driving performance also need to be considered and balanced in practical applications.