MEASUREMENT OF SOOT IN A DIESEL COMBUSTION CHAMBER BY LIGHT EXTINCTION METHOD AND IN-CYLINDER OBSERVATION BY HIGHSPEED SHADOWGRAPHY

An optical measurement named the "transmissive light extinction method" was carried out to investigate soot behavior in a diesel combustion chamber. First, the theoretical principle was discussed, and some preliminary experiments to examine the applicability of the method were performed. The method was applied successfully to the measurement of actual soot density in an experimental engine with a facility to observe the inside of the combustion chamber. However, some limitations were noticed in the method, as it was essentially a matter of local measurement. Then a simple but unique optical arrangement was made to enable simultaneous highspeed photographing of shadowgraphs and direct images of the combustion flame. As a result, a total picture of the combustion process, though it was not sufficiently quantitative yet, was obtained, including fuel spray, flame and soot behaviors. This total picture explained well the result of the local measurement of soot density by the transmissive light extinction method.

  • Supplemental Notes:
    • A Worldwide View of Diesel Combustion Emissions and Analysis, P-130. International Off-Highway Meeting and Exposition Milwaukee, Wisconsin, September 12-15, 1983.
  • Corporate Authors:

    Society of Automotive Engineers (SAE)

    400 Commonwealth Drive
    Warrendale, PA  United States  15096
  • Authors:
    • Kontani, K
    • Gotoh, S
  • Publication Date: 1983-9

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00382400
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Files: HSL, USDOT
  • Created Date: Mar 30 1984 12:00AM