Comparative analysis of the long-term performance of a diesel engine on vegetable oil based alternate fuels
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-
- Resource Relation:
- Conference: Society of Automotive Engineers international congress and exposition, Detroit, MI, USA, 24 Feb 1986
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
02 PETROLEUM
10 SYNTHETIC FUELS
DIESEL ENGINES
FUEL SUBSTITUTION
PERFORMANCE TESTING
SERVICE LIFE
DIESEL FUELS
COMBUSTION PROPERTIES
ETHANOL FUELS
EXHAUST GASES
TEMPERATURE MEASUREMENT
SUNFLOWER OIL
COMPARATIVE EVALUATIONS
FUEL CONSUMPTION
LEADING ABSTRACT
LIQUID FLOW
MEETINGS
MICROEMULSIONS
MULTIVARIATE ANALYSIS
PREDICTION EQUATIONS
REGRESSION ANALYSIS
RESPONSE FUNCTIONS
SMOKES
TIME DEPENDENCE
TURBOCHARGERS
ABSTRACTS
AEROSOLS
ALCOHOL FUELS
COLLOIDS
COMPRESSORS
DISPERSIONS
DOCUMENT TYPES
EMULSIONS
ENERGY CONSUMPTION
ENGINES
EQUATIONS
FLUID FLOW
FLUIDS
FUELS
FUNCTIONS
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MATHEMATICS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
RESIDUES
SOLS
STATISTICS
SUPERCHARGERS
SYNTHETIC FUELS
TESTING
VEGETABLE OILS
WASTES
330102* - Internal Combustion Engines- Diesel
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090110 - Hydrocarbon Fuels- Properties- (1979-1989)
330800 - Emission Control- Alternative Fuels