INFLUENCE OF OVERALL EQUIVALENCE RATIO AND DEGREE OF STRATIFICATION ON THE FUEL CONSUMPTION AND EMISSIONS OF A PRECHAMBER, STRATIFIED-CHARGE ENGINE

An experimental study of a divided-chamber, stratified-charge engine has been performed using a modified CFR L-head engine. Emissions and fuel consumption were measured over a wide range of overall fuel-air ratio and degree of stratification by varying the prechamber and main chamber inlet fuel-air ratios. High-speed motion pictures of the combustion process and the spatial distribution of fuel-air ratio in the combustion chamber, measured using a sampling valve, were used to explain the trends in the emissions data. Of particular interest is an increase in NOX emissions with increasing degree of stratification at lean overall fuel-air ratios.

  • Availability:
  • Supplemental Notes:
    • Presented at SAE Congress and Exposition, Detroit, 26 February-2 March 1979. Research supported by National Science Foundation.
  • Corporate Authors:

    Society of Automotive Engineers (SAE)

    400 Commonwealth Drive
    Warrendale, PA  United States  15096
  • Authors:
    • Sinnamon, J F
    • Cole, D E
  • Publication Date: 1979

Media Info

  • Features: References;
  • Pagination: 20 p.
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00301523
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: SAE 790438, HS-028 379U
  • Files: HSL, TRIS
  • Created Date: Nov 7 1984 12:00AM