RELATIONSHIPS BETWEEN EXHAUST SMOKE EMISSIONS AND OPERATING VARIABLES IN DIESEL ENGINES

The study relates air/fuel ratio, fuel injection timing, and engine speed to exhaust smoke levels and performance of the diesel engine. Insight into the basic mechanism of smoke formation in diesel engines was gained. The relative percentages of fuel injected before ignition (i.e., premixed fuel) and after initiation of combustion (i.e., unmixed diffusion burning fuel) were found to be extremely significant in determining smoke levels. A smoke factor (the ratio of equivalence ratio in the combustion chamber at initial ignition to overall equivalence ratio) was formulated. /SASI/

  • Corporate Authors:

    Society of Automotive Engineers

    400 Commonwealth Drive
    Warrendale, PA  USA  15096
  • Authors:
    • Bryzik, W
    • Smith, C O
  • Publication Date: 1977-9

Media Info

  • Pagination: 37 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00182992
  • Record Type: Publication
  • Report/Paper Numbers: SAE 770718
  • Files: TRIS
  • Created Date: Dec 3 1978 12:00AM