PROTOCOL TO CHARACTERIZE GASEOUS EMISSIONS AS A FUNCTION OF FUEL AND ADDITIVE COMPOSITION

This project sought to validate an engine dynamometer test schedule for additive effects previously used in Dow and Bu Mines programs. Previous problems with vehicle-to-engine dynamometer comparability were solved by the use of a Clayton power absorption unit and a fixed flywheel as an inertia simulator. Thus, adequate road simulation was achieved. Numerous analytical techniques were developed including analysis for SO2, H2S, COS, methyl and ethyl mercaptan, ammonia, N,N-dimethylnitrosamine, hydrocarbon distribution, and sulfate. No additive-derived products were found in the study of two commercial additive packages with either catalyst or non-catalyst engine configurations. The mileage accumulation schedule used resulted in overly-high rates of accumulation of intake manifold deposits for both additive and base fuels. It is suggested that greater mileage accumulations over a heavier duty cycle will be necessary to detect the effects of additives on catalyst deterioration.

• Corporate Authors:

  Southwest Research Institute

  Department of Mechanical Sciences
  San Antonio, TX  United States  78284

  Environmental Sciences Research Laboratory

  Research Triangle Pk, NC  United States  27711
• Authors:
  • Dietzmann, H E
• Publication Date: 1975-9

Media Info

• Pagination: 132 p.

Subject/Index Terms

• TRT Terms: Additives; Air pollution; Analysis; Automobiles; Catalysts; Chemical analysis; Chemical concentration; Dynamometers; Emission control systems; Engines; Exhaust gases; Flywheels; Fuel additives; Hydrocarbons; Inertia; Internal combustion engines; Motor fuels; Nitrogen compounds; Nitrogen inorganic compounds; Organic compounds; Particles; Sampling; Simulation; Statistical analysis; Sulfates; Sulfur; Sulfur inorganic compounds
• Uncontrolled Terms: Experimental design; Mileage
• Old TRIS Terms: Analytical method; Automotive engines; Nitrogen organic compounds; Sulfur organic compounds
• Subject Areas: Data and Information Technology; Highways; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00137103
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: Final Rpt., EPA/600/2-75/048
• Contract Numbers: EPA-68-02-1275
• Files: TRIS
• Created Date: Sep 4 1976 12:00AM