Predicting Pressure Drop of Wall-Flow Diesel Particulate Filters - Theory and Experiment

Information on transport mechanisms in a Diesel Particulate Filter (DPF) provides crucial insight into the filter performance. Extensive experimental work has been pursued to modify, customize and validate a model yielding accurate predictions of a ceramic wall-flow DPF pressure drop. The model accounts, not only for the major pressure drop components due to flow through porous walls but also, for viscous losses due to channel plugs, flow contraction and expansion due to flow entering and exiting the trap and also for flow secondary inertial effects near the porous walls. Experimental data were collected on a matrix of filters covering change in filter diameter and length, cell density and wall thickness and for a wide range of flow rates. The model yields accurate predictions of DPF pressure drop with no particulate loading and, with adequate adjustment, it is also capable of making predictions of pressure drop for filters lightly-loaded with particulates. The filters in this study are uncatalyzed. Efforts are also underway to validate an ‘upgraded’ version of this model for filters with appreciable particulate loading.

• Record URL:
  • https://doi.org/10.4271/2000-01-0184
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Abstract reprinted with permission of SAE International.
• Authors:
  • Masoudi, Mansour
  • Heibel, Achim
  • Then, Paul M
• Conference:
  • SAE 2000 World Congress
  • Location: Detroit Michigan, United States
  • Date: 2000-3-6 to 2000-3-9
• Publication Date: 2000-3-5

Language

• English

Media Info

• Media Type: Web
• Serial:
  • SAE Technical Paper
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Air filters; Diesel engine exhaust gases; Pressure
• Subject Areas: Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01795775
• Record Type: Publication
• Source Agency: SAE International
• Report/Paper Numbers: 2000-01-0184
• Files: TRIS, SAE
• Created Date: Dec 9 2021 10:18AM