EFFECT OF FUEL ADDITIVES ON THE CHEMICAL AND PHYSICAL CHARACTERISTICS OF PARTICULATE EMISSIONS IN AUTOMOTIVE EXHAUST

This report describes work carried out on a research study to develop methods of generating, collecting, and analyzing particle emissions from automotive power plants by means sufficiently accurate and reproducible to allow the determination of the effect of fuel additives, fuel composition, engine and vehicle operating mode, and advanced emissions control hardware on exhaust particle size, concentration, and composition. Particle emissions were examined from several different engines, loaded by an engine dynamometer, and several different vehicles operated under cruise conditions, the FTP (California) cycle, and the LA-4 cycle. Particle mass measurement techniques have included tailpipe measurement methods and air dilution sampling methods using impaction separators, filters, a Beta-gauge technique, and piezoelectric cyrstal techniques. Several different fuel compositions and fuel additions were examined for their effect on particle emissions. Catalytic exhaust gas reactors were also evaluated for such effects. The applicability and validity of the techniques were substantiated and the data suggest a very significant effect of fuel additives, primarily TEL, and to a limited extent exhaust catalytic reactors on exhaust particle size, concentration, and composition. The applicability of the techniques to cycled vehicle studies has been shown. The effect of selected dilution tube variables on the physical and chemical characteristics of particulate exhaust emissions, the particulate collection capabilities of a second Beta-gauge instrument, and some thirty commercial gasoline samples procured from three different geographical regions of the United States were analyzed. /Author/

  • Supplemental Notes:
    • Sponsored by the Environmental Protection Agency, Office of Research and Monitoring.
  • Corporate Authors:

    Dow Chemical Company

    Freeport, TX  USA  77541
  • Authors:
    • Moran, J B
    • Baldwin, M J
    • Manary, O J
    • Valenta, J C
  • Publication Date: 1972

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 367 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00262756
  • Record Type: Publication
  • Source Agency: National Safety Council Safety Research Info Serv
  • Report/Paper Numbers: EPA-R2-066
  • Contract Numbers: CPA 22-69-145
  • Files: TRIS
  • Created Date: Dec 13 1974 12:00AM