Through advanced filtration technology and high - quality materials, we ensure that our DPFs meet the most stringent environmental standards helping to improve air quality and protect the environment.
Through advanced filtration technology and high - quality materials, we ensure that our DPFs meet the most stringent environmental standards helping to improve air quality and protect the environment.
Application scenarios
DPF for gasoline vehicles: mainly installed in the emission system of gasoline engines, used to capture and reduce particulate matter in exhaust gas. It evolved from a flow-through three-way catalyst, with a generally cylindrical shape and a honeycomb ceramic carrier used internally to capture particulate matter through interception, collision, diffusion, and gravity settling.
Diesel DPF: Installed in the emission system of diesel engines, it is used to capture and reduce particulate matter. Diesel particulate filters are usually made of ceramic or metal based materials, with micro porous structures that can effectively filter particulate matter.
Working principle
DPF for gasoline vehicles: By using the pore structure inside the honeycomb ceramic carrier, particulate matter is captured on the carrier wall through interception, collision, diffusion, and gravity settling, thereby achieving the filtration of particulate matter.
Diesel DPF: It works through deep filtration and surface filtration mechanisms. Deep filtration adsorbs particulate matter through micropores, while surface filtration reduces emissions by depositing particulate matter on the filter surface.
Regeneration mechanism
DPF regeneration for gasoline vehicles: divided into passive regeneration and active regeneration. Passive regeneration is achieved during daily driving by generating a large amount of oxygen into the DPF through engine fuel cut-off to achieve regeneration; Active regeneration is the process of increasing exhaust temperature and reducing air-fuel ratio under special operating conditions (such as high-speed driving) to oxidize and burn particulate matter. It should be noted that GPF regeneration cannot remove ash content and needs to be replaced when it accumulates.
Diesel vehicle DPF regeneration: also divided into passive regeneration and active regeneration. Passive regeneration is the combustion of particulate matter in high-temperature environments during daily driving; Active regeneration requires increasing the exhaust temperature and utilizing high temperatures to burn and exhaust particulate matter. During the regeneration process, the exhaust pipe temperature can reach over 500 ℃, and it is necessary to stay away from flammable and explosive materials.
