Size distributions and concentrations of particulates emitted from diesel engine exhausts were measured with cascade impactors. Samples were taken from the exhaust of two types of engines using three types of fuel and operating under five different engine speed and load conditions. The measured mass median diameters of the diesel particulates were typically about 0.3 micrometer. There was no significant difference in mass median diameter between engines or fuels and only a slight dependence on operating mode. Concentration measurements ranged from 14.2 to 250.9 mg/cu m and calculated mass outputs from 64 to 10,000 mg/min. Significant differences in mass output were found between engines, fuels and especially between different operating modes. The quantity of clean dilution air which would be required to reduce the particulate mass concentration below the 2.0 mg/cu m respirable dust standard for coal mines was greater than the dilution air required to meet the standards for noxious gases for both engines tested.

  • Corporate Authors:

    Bureau of Mines

    C Street Between 18th and 19th Streets, NW
    Washington, DC  United States  20241
  • Authors:
    • Breslin, J A
    • Strazisar, A J
    • Stein, R L
  • Publication Date: 1976-10

Media Info

  • Pagination: 16 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00151596
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: BuMines-RI-8141r intrm Rpt.
  • Files: TRIS
  • Created Date: Apr 13 1977 12:00AM