WATER-GASOLINE FUELS -- THEIR EFFECT ON SPARK IGNITION ENGINE EMISSIONS AND PERFORMANCE

Single-cylinder engine tests, an analytical engine cycle simulation, and automobile tests were employed to study the effects of supplementing gasoline with water for use in spark ignition engines. Factors examined include: the method of water addition (both water-in-gasoline emulsions and direct manifold water addition), antiknock characteristics with water addition, MBT spark requirement, indicated engine efficiency, engine cooling requirement, exhaust emissions, volumetric efficiency, lean operating limit, smoke level, exhaust temperature, and vehicle driveability. Among the negative aspects of water addition were increased hydrocarbon emissions and decreased vehicle driveability. Also, the polyoxyethylene type of emulsifier used in the water-in-gasoline emulsions, gave poor fuel stability and caused a rapid buildup of engine deposits. However on the positive side, water-gasoline fuels have higher octane ratings and decrease nitric oxide emissions.

• Supplemental Notes:
  • Preprint for meeting held June 7-10, 1976.
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Peters, B D
  • Stebar, R F
• Publication Date: 1976-6

Media Info

• Features: References;
• Pagination: 21 p.

Subject/Index Terms

• TRT Terms: Additives; Air pollution; Dispersers; Exhaust gases; Gasoline; Motor fuels; Nitric oxide; Octane number; Performance; Smoke; Spark ignition engines; Temperature; Vehicle power plants; Water
• Old TRIS Terms: Additive compounds; Automobile engines; Octane rating
• Subject Areas: Geotechnology; Highways; Materials; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00164972
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: SAE 760547 Preprint
• Files: TRIS
• Created Date: May 18 1978 12:00AM