THE EFFECT OF UNLEADED FUEL COMPOSITION ON POLYNUCLEAR AROMATIC HYDROCARBON EMISSIONS

Three cars have been operated for approximately 8000 miles on each of four unleaded gasolines. These gasolines encompassed varied levels of C6-C8 aromatics and varied polynuclear aromatic (PNA) content. Exhaust PNA emissions and lube oil PNA content were measured periodically during the course of mileage accumulation. Results of this study show that increases in both light C6-C8 fuel aromatics and fuel-contained PNAS can result in significantly increased exhaust PNAs. Vehicles meeting increasingly stringent hydrocarbon (HC) and carbon monoxide (CO) emissions standards emit greatly reduced quantities of exhaust PNAs, though the rate of lube oil PNA accumulation appears to be unaffected by emissions control systems. Accumulated lubricating oil mileage was found to correlate with increased PNA emissions with a high level of statistical significance.

• Corporate Authors:

  Society of Automotive Engineers

  485 Lexington Avenue
  New York, NY  United States  10017
• Authors:
  • Newhall, H K
  • Jentoft, R E
  • Ballinger, P R
• Publication Date: 1973-9

Media Info

• Pagination: 10 p.

Subject/Index Terms

• TRT Terms: Aromatic hydrocarbons; Emission control systems; Exhaust gases; Fuel elements; Gasoline; Hydrocarbons; Lubricating oils
• Uncontrolled Terms: Mileage
• Subject Areas: Highways; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00081027
• Record Type: Publication
• Report/Paper Numbers: SAE #730834 Paper
• Files: TRIS
• Created Date: Mar 26 1975 12:00AM