Product description：

Name : Universal diesel Silicon Carbide DPF

Size:
118x144mm 1pcs
118x203mm 1pcs
118x254mm 1pcs
132x120mm 1pcs
132x203mm 1pcs
144x115mm 1pcs
144x152mm 2pcs
144x203mm 1pcs
150x100mm 1pcs
163x140mm 1pcs
165x203mm 1pcs
170x100mm 1pcs
172x180mm 1pcs

Contact us：

whatsapp:+86 13681711685

Email: kesairay@proton.me

Note:

Size error ±1mm

What is a Diesel DPF？

A Diesel Particulate Filter (DPF) is a device used to reduce particulate emissions from diesel exhaust.

It works like a filter, capturing and storing particulate matter, such as soot, in the exhaust. As particulate matter accumulates, the DPF removes it through active or passive regeneration processes to maintain filtration performance.

Active regeneration is usually done by injecting additional fuel, raising the exhaust temperature and burning the particles into carbon dioxide. Passive regeneration is to use the high temperature of exhaust gas to burn particles under normal driving conditions.

For example, a diesel taxi often driving in the city, the particulate matter in its exhaust will be effectively captured and filtered by the DPF, after a period of operation, when the accumulation of particulate matter in the DPF to a certain extent, the vehicle's control system will start the active regeneration process to remove the particulate matter combustion, ensuring that the vehicle always maintains low particulate matter emissions.

How diesel DPF works

The working principle of DPF for diesel vehicles is mainly based on physical filtration and regeneration processes.

** Physical Filtering ** :

DPF is made of porous ceramic or metal material with many tiny channels inside. When the exhaust gas of diesel vehicles passes through these channels, the particles in them will be intercepted and adsorbed on the channel wall, so as to filter the particles.

** Regeneration process ** :

Due to the continuous accumulation of particulate matter, DPF will gradually clog, affecting engine performance and exhaust emissions. Therefore, regeneration is needed to remove accumulated particles.

- Active regeneration: By injecting additional fuel into the exhaust gas, the fuel is burned in the exhaust pipe, raising the exhaust gas temperature (generally up to 550-600 degrees Celsius). The high temperature causes the particles adsorbed on the DPF to burn and be converted into gases such as carbon dioxide.

Passive regeneration: Under normal driving conditions, such as when the vehicle is driving at high speed, the exhaust gas temperature is relatively high (generally 250-450 degrees Celsius), which is enough to make the accumulated particles burn themselves and achieve regeneration.

For example, a long-distance diesel van driving on a highway with higher exhaust temperatures may trigger passive regeneration, removing some of the particles that accumulate in the DPF. When the vehicle starts and stops frequently in the urban area, the accumulation of particles is fast and the exhaust temperature is not high enough, the vehicle control system will start active regeneration in time to ensure the normal operation of DPF.

For another example, for a diesel light truck used for urban distribution, due to the more complex driving conditions, the regeneration of DPF may switch between active and passive modes more frequently to maintain its filtering effect on particles and reduce particulate emissions in the exhaust gas.