The full name of the DPF for trucks is "Diesel Particulate Filter", which means diesel particulate filter or particulate trap. It is an important equipment installed in the exhaust system of diesel engines that can capture harmful small particles such as hydrocarbons, sulfur, and carbon oxides in the exhaust gas through various functions. When a certain amount of particulate matter is collected, it will be centrally processed and converted into harmless gases through active or passive regeneration before being discharged. DPF is of great significance in reducing diesel vehicle exhaust emissions and improving environmental performance.

The working process of DPF is very ingenious. When the vehicle is running, it acts like a diligent "guardian" silently adsorbing various harmful particles in the exhaust. As time goes by, when the particulate matter in the DPF reaches a certain limit, regeneration operation is required.

Active regeneration is the autonomous combustion and emission process of a vehicle, which can be completed silently during normal driving without the need for special intervention from the vehicle owner, just like a quiet cleaning action. During passive regeneration, the dashboard will light up an indicator light to alert the car owner. At this time, the car owner only needs to press the button to complete the cleaning in about 5 minutes, which is simple and convenient.

There are various types of DPF, which can be divided into rotary, sliding, pulse, etc. based on their structure and working principle. Different types of DPF play unique roles in their respective fields. And it has three working modes. In automatic mode, when the green indicator light is on, it indicates that it is working normally and the driver does not need to worry. When the yellow indicator light is on, it enters manual regeneration mode. The driver needs to drive the car off the road, park it, press the button, and wait for 30 minutes until the light goes out. The regeneration mode is more flexible. If necessary, press and hold for 3 to 5 seconds to manually start.

However, if the particulate matter in the DPF accumulates too much and forms carbon deposits, and is not cleaned in time, resulting in severe blockage of the vehicle, it will be restricted from turning into limp mode. Therefore, daily maintenance of DPF is crucial and requires regular replacement and cleaning to ensure that it is always in good working condition.

In short, DPF is a powerful assistant for diesel trucks on the road of environmental protection. Understanding its working principle, types, and maintenance points can help us better play its role and assist diesel vehicles in steadily moving forward on the road of environmental protection and efficient operation.