With the full implementation of the National VI emission standards, the problem of DPF (diesel particulate filter) blockage in diesel vehicles is becoming a pain point in the industry. According to environmental monitoring data, the DPF failure rate around tertiary hospitals will increase by 47% year-on-year in 2023, while a logistics company will suffer daily losses of up to 23000 yuan due to DPF blockage. Faced with the critical value of carbon loading exceeding 1200g/m ³, this practical solution has been summarized.

 Urgent handling: 3 mandatory measures for exceeding carbon load standards

1. Misconception triggered by active regeneration: When the carbon load reaches 800g/m ³, the "dual temperature and dual pressure" principle must be strictly followed. Actual testing has found that when the ambient temperature is below 250 ℃ or the back pressure exceeds 500Pa, the success rate of forced regeneration drops sharply by 62%. A certain 4S dealership once burned out a DPF worth 280000 yuan due to neglecting backpressure monitoring.

2. Passive regeneration time window: The optimal regeneration window occurs in driving scenarios where the vehicle travels an average of 120km per day. We found through on-board OBD data analysis that after three consecutive days of passive regeneration failure, the carbon load growth rate will suddenly increase from 0.85g/h to 2.3g/h. It is recommended to install intelligent monitoring equipment that automatically starts the regeneration process when the carbon load exceeds 1000g/m ³.

3. Innovation in physical cleaning technology: The use of pulse steam cleaning method (PSR-3000 equipment) can increase cleaning efficiency by 3.2 times compared to traditional methods. After being applied by a certain heavy-duty truck transportation company, the cleaning cycle has been extended from 45 days to 98 days, reducing the cost of single cleaning by 40%.