What does DPF carbon loading mean?
2 Answers
DPF carbon loading refers to the use of a diesel particulate filter (DPF), which is an important measure for vehicle diesel engines to meet emission regulations. The following is an introduction to DPF: 1. Carbon loading calculation method: A calculation method for DPF carbon loading based on pressure drop, which includes parameters such as exhaust temperature before and after the DPF to estimate the internal carbon loading. The carbon loading value based on back pressure is calculated through the DPF back pressure model. Among various DPF regeneration technologies, except for continuous regeneration, it is necessary to determine the timing of regeneration. Determining the regeneration timing essentially means judging whether the carbon loading in the particulate filter meets the regeneration requirements. 2. Weighing: The most direct method to determine DPF carbon loading is to weigh the DPF when empty and after loading. However, during actual vehicle operation, it is not feasible to frequently disassemble the DPF. Currently, mainstream regeneration control strategies use carbon loading as the direct control parameter to trigger active DPF regeneration. However, during actual diesel engine operation, how to accurately estimate the DPF carbon loading using real-time detectable parameters and precisely control the start and stop of regeneration still requires further research.
I've been driving diesel cars for over a decade. DPF carbon loading refers to the accumulated soot amount in the diesel particulate filter. Simply put, the soot particles from diesel exhaust get trapped by the filter, and over time this buildup becomes the carbon loading. When this level gets too high, the car will illuminate a warning light, affecting acceleration and fuel consumption. For example, daily city driving with traffic jams and short trips can easily increase carbon loading. At this point, you need to perform regeneration cleaning, otherwise the filter could get completely clogged and damaged. Nowadays, OBD diagnostic tools can check this percentage - exceeding certain values causes trouble. I recommend regularly driving at highway speeds for over half an hour to burn off the soot. Don't ignore it for convenience's sake, as repairs can be costly. Proper DPF maintenance saves money and ensures safer driving.
