Comparative analysis of the long-term performance of a diesel engine on vegetable oil based alternate fuels

Conference · Wed Jan 01 04:00:00 EST 1986

OSTI ID:5637094

Ziejewski, M; Goettler, H; Pratt, G L

A 25-75 blend (v/v) of alkali-refined sunflower oil and diesel fuel, a 25-75 blend (v/v) of high oleic safflower oil and diesel fuel, a non-ionic sunflower oil-aqueous ethanol microemulsion, and a methyl ester of sunflower oil were evaluated as fuels in a direct injected, turbo-charged, intercooled, 4-cylinder Allis-Chalmers diesel engine during 200-hour EMA cycle laboratory screening endurance tests. Engine performance on Phillips 2-D reference fuel served as baseline for the experimental fuels. The experiment was conducted to develop prediction equations to determine the effects of alternate fuels on long-term engine performance. Least squares regression procedures were used to analyze long-term effects the test fuels had on engine performance and to simultaneously compare the test fuels. Several variables were used to measure engine performance. These response variables were volumetric fuel flow, energy input, power output, brake specific energy consumption, exhaust temperature and exhaust smoke. The predictor variables were time of the EMA cycle and fuel type. Two multivariate tests were performed in this analysis. The first tested the significance of time on the response variable. The second tested the fuel effect. Both tests were significant. The results of the univariate regressions indicated that time had a significant effect only on exhaust temperature. In all other cases, time was not a factor. However, significant difference in the intercepts of the prediction equations were found between tested fuels.

• Research Organization: Mechanical Engineering Dept., North Dakota State Univ., Fargo, ND
• OSTI ID: 5637094
• Report Number(s): CONF-860263-
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
025000 -- Petroleum-- Combustion
090110 -- Hydrocarbon Fuels-- Properties-- (1979-1989)
10 SYNTHETIC FUELS
33 ADVANCED PROPULSION SYSTEMS
330102* -- Internal Combustion Engines-- Diesel
330800 -- Emission Control-- Alternative Fuels
ABSTRACTS
AEROSOLS
ALCOHOL FUELS
COLLOIDS
COMBUSTION PROPERTIES
COMPARATIVE EVALUATIONS
COMPRESSORS
DIESEL ENGINES
DIESEL FUELS
DISPERSIONS
DOCUMENT TYPES
EMULSIONS
ENERGY CONSUMPTION
ENGINES
EQUATIONS
ETHANOL FUELS
EXHAUST GASES
FLUID FLOW
FLUIDS
FUEL CONSUMPTION
FUEL SUBSTITUTION
FUELS
FUNCTIONS
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
LEADING ABSTRACT
LIQUID FLOW
MATHEMATICS
MEETINGS
MICROEMULSIONS
MULTIVARIATE ANALYSIS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PERFORMANCE TESTING
PETROLEUM PRODUCTS
PREDICTION EQUATIONS
REGRESSION ANALYSIS
RESIDUES
RESPONSE FUNCTIONS
SERVICE LIFE
SMOKES
SOLS
STATISTICS
SUNFLOWER OIL
SUPERCHARGERS
SYNTHETIC FUELS
TEMPERATURE MEASUREMENT
TESTING
TIME DEPENDENCE
TURBOCHARGERS
VEGETABLE OILS
WASTES