A STUDY OF THE POTENTIAL IMPACT OF SOME UNREGULATED MOTOR VEHICLE EMISSIONS

Studies of emissions from vehicles equipped with catalysts have shown that some unregulated emissions can increase when a catalyst is used. One example of this is sulfuric acid, which has been studied extensively. Other unregulated emissions include ammonia and hydrogen cyanide. In a number of studies, these unregulated pollutant emissions have been measured from light-duty vehicles and heavy-duty engines. These emission levels were used in air quality dispersion models to predict the resultant air quality levels. The ambient concentrations predicted for each pollutant were then compared to suggested concentrations at which adverse health effects may be found to determine if additional monitoring or control would be indicated for these pollutants. It was determined that mobile source emissions of sulfuric acid, hydrogen cyanide, and ammonia do not in general result in ambient levels of concern for the air quality situations studied.

  • Availability:
  • Supplemental Notes:
    • Passenger Car Meeting Dearborn, Michigan, June 6-9, 1983.
  • Corporate Authors:

    Society of Automotive Engineers (SAE)

    400 Commonwealth Drive
    Warrendale, PA  United States  15096
  • Authors:
    • Harvey, C A
    • Garbe, R J
    • BAINES, T M
    • Somers, J H
    • Hellman, K H
    • Carey, P M
  • Publication Date: 1983

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00381748
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Report/Paper Numbers: SAE 830987, HS-035 543
  • Files: HSL, USDOT
  • Created Date: Feb 29 1984 12:00AM