Disadvantages of DPF filter Cleaning

1.      Structural Damage‌: High-pressure washing may crack the ceramic substrate, reducing filtration efficiency‌.

2.      ‌Chemical Residue‌: Aggressive cleaning agents can degrade catalytic coatings (e.g., DOC, SCR integration).

3.      ‌Moisture Retention‌: Improper drying after cleaning causes internal corrosion and ammonia slip‌.

4.      ‌Blockage Risks‌: Residual ash or debris may re-clog channels, increasing exhaust backpressure.

5.      ‌Reduced Regeneration Efficiency‌: Damaged filters fail to reach optimal temperatures for passive/active regeneration‌.

6.      ‌Shortened Lifespan‌: Frequent cleaning accelerates wear, requiring premature replacement‌.

7.      ‌Leakage Hazards‌: Poor resealing post-cleaning allows toxic emissions (e.g., NOx, PM) to escape‌.

8.      ‌Incomplete Carbon Removal‌: Stubborn soot layers persist, triggering forced regenerations more often.

9.      ‌Sensor Malfunction‌: Residual contaminants disrupt differential pressure sensors, delaying regeneration alerts.

10.  ‌Unqualified Service Risks‌: Non-specialized workshops often use incompatible tools, worsening damage.