INCOMPLETE COMBUSTION IN ONE-END-OPEN CREVICES

The present paper considers the processes of incomplete combustion in in-cylinder crevices with clearances slightly greater than quenching distance. For this, an experimental work has been carried out by using a premixed constant-volume combustion chamber. In the chamber, the propagation of flame through the combustible gas contained in individual crevices with various geometries was investigated by two means: high speed schlieren photography to obtain the idiosyncrasy of the in-crevice flame behavior; and fast-response thin-film thermocouples mounted flush with the crevice wall to measure the flame propagation speed, the instantaneous surface temperature, the instantaneous heat flux through the crevice wall, etc. From the investigation, the origins of unburned hydrocarbons formed in the in-cylinder crevices were surmised. In addition, an improved numerical method is presented for the computation of heat flux through a slab (here, the crevice wall) by using the timed surface temperature measured by the thin-film thermocouple.

  • Availability:
  • Supplemental Notes:
    • Fuels and Lubricants Meeting San Francisco, California, October 31-November 3, 1983.
  • Corporate Authors:

    Society of Automotive Engineers (SAE)

    400 Commonwealth Drive
    Warrendale, PA  United States  15096
  • Authors:
    • RHEE, K T
    • Chang, S L
  • Publication Date: 1983

Media Info

  • Features: Appendices; Figures; References;
  • Pagination: 9 p.
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00387443
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Report/Paper Numbers: SAE 831695, HS-036 800
  • Files: HSL, USDOT
  • Created Date: Aug 30 1984 12:00AM