A NEW APPROACH TO THE OXIDISING BEHAVIOUR OF A POROUS CERAMIC DIESEL PARTICULATE TRAP

A model simulating the behavior of the porous ceramic trap was developed. The model is based on the assumption that the pore size of the trap combined with the particle size distribution resulting from the trap oxidising activity defines two areas of trap operation: (I) accumulation when no pass-through is permitted, and (II) continuous regeneration when pass-through is permitted. The mathematical evaluation of the model demonstrates that regeneration depends on the ratio of space-time and oxidation process time constant. As far as the lower regeneration limit is concerned, temperature is the main parameter, while the upper regeneration limit is imposed by the low space-time. These dependencies have been experimentally confirmed for the couple of a light-duty Daimler-Benz engine and a Corning Ex 47 trap. The test data at the regeneration limits have been correlated on the basis of the model and for continuous oxidation of particle mass flow. This resulted in a direct derivation of the physical constants of the oxidation process. For the covering abstract see IRRD 287303.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Pattas, K N
  • KYRIAKIS, N A
  • Samaras, Z C
• Publication Date: 1985

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 35-42
• 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 quality management; Ceramic materials; Diesel engines; Exhaust gases; Filters; Oxidation; Particulates; Simulation; Validation
• ITRD Terms: 4507: Ceramic; 1314: Diesel engine; 5910: Durability; 7182: Filter; 6473: Mathematical model; 7157: Oxidation; 6200: Particle size distribution; 9103: Simulation
• Subject Areas: Highways; Public Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00454113
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Report/Paper Numbers: SAE 850012
• Files: ITRD, TRIS
• Created Date: Jul 31 1986 12:00AM