EVAPORATIVE AND EXHAUST EMISSIONS FROM CARS FUELED WITH GASOLINE CONTAINING ETHANOL OR METHYL TERT-BUTYL ETHER

Vehicle tests showed that evaporative emissions were increased significantly by adding 10% ethanol to gasoline, but were increased less by adding 15% methyl tert-butyl ether (MTBE), a gasoline blending component. The quantity of ethanol or MTBE in evaporative emissions was investigated in laboratory tests. Exhaust hydrocarbon, carbon monoxide, and nitrogen oxide emissions from a car without closed-loop fuel control were significantly lower with the ethanol and MTBE fuel blends than with gasoline. For cars equipped with closed-loop carburetors, there were small absolute differences in exhaust emissions among the fuels. Fuel economy and driveability were worse with ethanol and MTBE fuel blends than with gasoline.

• Supplemental Notes:
  • Presented at SAE Congress and Exposition, Detroit, February 1980. Published in HS-030 163 (SAE-PT-19), "Alcohols as Motor Fuels," Warrendale, Pa., 1980 pp 299-315.
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • FUREY, R L
  • King, J B
• Publication Date: 1980

Media Info

• Features: References;
• Pagination: 17 p.

Subject/Index Terms

• TRT Terms: Air quality management; Blends; Carbon monoxide; Ethanol; Evaporative emissions; Exhaust gases; Fuel consumption; Gasohol; Hydrocarbons; Methanol; Motor fuels; Nitric oxide; Nitrogen oxides; Vehicle performance; Vehicle tests
• Old TRIS Terms: Evaporative emission control
• Subject Areas: Energy; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00379110
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: SAE 800261, HS-030 170
• Files: HSL, ATRI, USDOT
• Created Date: Oct 30 1983 12:00AM