The DPF device, the full name is "diesel particle trap", also known as the diesel engine particle capture regenerator, its role is to reduce the exhaust (PM) emissions of pollutants.
What is a DPF filter?
Since diesel engines burn fuel differently from gasoline engines, a large amount of soot is generated as a by-product of the combustion process. This wonderful, almost invisible substance can cause major health problems in the environment; The job of a DPF is to destroy and destroy it before it can happen. DPF became standard in 2009, but before that date, some diesel models had already installed the technology. At present, it has become the standard of diesel vehicles after China V and China V.
DPF cleaning
While DPF's first job is to capture and contain harmful particles, it also needs to get rid of them. DPF enables this process, known as DPF regeneration, by exposing it to very high temperatures, burning it and converting particulate matter into harmless ash.
DPF regeneration is mainly divided into the following two types.
Automatic regeneration: The color of the DPF fault light is displayed in green, at which point no manual intervention is required. When the vehicle is driving at high speed (more than 80km/h), when the PM (particulate matter) accumulates to a certain amount, the DPF will automatically enter the working state, and the indicator light will be in green and bright. At this time, there is no need for manual intervention, just need to maintain a normal driving state, until the particle treatment is completed, the DPF indicator will automatically extinguish, which also represents the completion of the particle treatment.
However, due to the uneven domestic oil products and complex vehicle conditions, DPF blockage in addition to carbon smoke there is a large amount of oil pollution, sometimes automatic regeneration can not solve the National VI diesel vehicle DPF failure, at this time it is necessary to manually regenerate the National VI diesel vehicle DPF carrier by high temperature heating (also known as manual regeneration).
Manual regeneration: The DPF yellow indicator will flash a signal, which is generally the case where the vehicle is driving at a low speed of less than 80km/h. At this time, we should drive away from the road in time, away from flammable and explosive materials, wait for the vehicle to stop, hang the neutral gear, pull the handbrake, and press the DPF control key. At this time, the yellow indicator light will be on, the processing time will be about 15-30 minutes, and when the particle treatment is completed, the indicator will automatically turn off.
In the process of DPF regeneration of some diesel pickup trucks, some car owners do not know how to operate. Taking the diesel car of the Great Wall Gun as an example, the owner should first keep the car powered on but not ignited, and then press and hold the DPF button while igniting. At this time, the engine speed will be increased to about 2000 rpm, and the dashboard will also display the information that the particle trap is self-cleaning, and wait for the self-cleaning to be completed.
If the DPF light is on, it is usually a warning that the device needs to be cleaned. Your car's manual will tell you how to drive to achieve this. If you follow these instructions and the lights don't go out, you'll need to hand over your car to the dealer as soon as possible. While DPF cleaner liquids can be purchased from auto parts stores, the jury doesn't care about the effectiveness of these liquids, and DPF cleaning efforts are best left to a professional.