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 percent ethanol to gasoline, but were increased less with 15 percent MTBE in gasoline. The quantity of ethanol or MTBE in evaporative emissions was investigated in laboratory tests. Exhaust HC, CO, and NO sub x, 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, the absolute differences in exhaust emissions among the fuels were a small. Fuel economy and driveability were worse with ethanol and MTBE fuel blends than with gasoline.

• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • FUREY, R L
  • King, J B
• Publication Date: 1980-2

Media Info

• Pagination: 17 p.

Subject/Index Terms

• TRT Terms: Blends; Carbon monoxide; Carburetors; Ethanol; Exhaust gases; Fuel consumption; Gasoline; Hydrocarbons; Methanol; Nitric oxide; Nitrogen oxides
• Subject Areas: Energy; Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 00315453
• Record Type: Publication
• Report/Paper Numbers: SAE 800261
• Files: TRIS
• Created Date: Aug 5 1980 12:00AM