SINGLE-CYLINDER DIESEL ENGINE TESTS WITH UNSTABILIZED WATER-IN-FUEL EMULSIONS
A single-cylinder, four-stroke cycle diesel engine was operated on unstabilized water-in-fuel emulsions. Two prototype devices were used to produce the emulsions on-line with the engine. More than 350 test points were run with baseline diesel fuel and emulsified water-in-fuel. Water content of the emulsified fuel varied from about 2% to 23% by volume. Statistically significant decreases in fuel consumption, ranging from 1.2% to 5.1% were obtained with emulsified fuels in 20 out of 36 test conditions. An increase of 2.5% was measured at one condition only. Use of the emulsified fuels decreased oxides of nitrogen by up to about 60% and Bosch smoke numbers by up to almost 70%, whereas unburned hydrocarbons increased up to over 130%. Carbon monoxide changes with emulsified fuel varied from a decrease of 52% to an increase of over 170%, depending on engine speed and power, and water content of the fuel. No problems were encountered in engine operation at any test condition with the water-in-fuel emulsions.
- Prepared for U.S. Department of Transportation, U.S. Coast Guard Office of Research and Development, Washington, D.C. 20590.
Southwest Research InstituteDepartment of Engine and Vehicle Research
San Antonio, TX United States 78284
- Storment, J O
- Coon, C W
- Publication Date: 1978-8
- Pagination: 91 p.
- TRT Terms: Combustion; Diesel engine exhaust gases; Diesel engines; Diesel fuels; Emulsions; Fuel conservation; Fuel consumption; Fuel emulsions; Performance; Vehicle operations
- Old TRIS Terms: Diesel operation; Diesel performance
- Subject Areas: Energy; Marine Transportation;
- Accession Number: 00187980
- Record Type: Publication
- Source Agency: United States Coast Guard
- Report/Paper Numbers: CG-D-13-78 Final Rpt.
- Contract Numbers: DOT-TSC-920
- Files: TRIS
- Created Date: Feb 3 1979 12:00AM