This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
The Influence of High-Octane Fuel Blends on the Performance of a Two-Stroke SI Engine with Knock-Limited-Compression Ratio
Annotation ability available
Sector:
Language:
English
Abstract
The use of alcohol-gasoline blends enables the favorable features of alcohols to be utilized in spark ignition (SI) engines while avoiding the shortcomings of their application as straight fuels. Eucalyptus and orange oils possess high octane values and are also good potential alternative fuels for SI engines. The high octane value of these fuels can enhance the octane value of the fuel when it is blended with low-octane gasoline. In the present work, 20 percent by volume of orange oil, eucalyptus oil, methanol and ethanol were blended separately with gasoline, and the performance, combustion and exhaust emission characteristics were evaluated at two different compression ratios. The phase separation problems arising from the alcohol-gasoline blends were minimized by adding eucalyptus oil as a co-solvent. Test results indicate that the compression ratio can be raised from 7.4 to 9 without any detrimental effect, due to the higher octane rating of the fuel blends. Knock-limited maximum brake output also increases due to extension of the knock limit. The knock limit is extended by methanol-eucalyptus-ethanol-orange oil blends, in descending order.
Recommended Content
Authors
Topic
Citation
Poola, R., Bhasker, T., Nagalingam, B., and Gopalakrishnan, K., "The Influence of High-Octane Fuel Blends on the Performance of a Two-Stroke SI Engine with Knock-Limited-Compression Ratio," SAE Technical Paper 941863, 1994, https://doi.org/10.4271/941863.Also In
Gasoline: Composition and Additives to Meet the Performance and Emission Requirements of the Nineties
Number: SP-1054; Published: 1994-10-01
Number: SP-1054; Published: 1994-10-01
References
- Hansel, J.G. Lean Automotive Engine Operation-Hydrocarbon Exhaust Emissions and Combustion Characteristics SAE Paper 710164 1971
- Germane, G.J. Wood C.G. Hess C.C. Lean Combustion in Spark-Ignited Internal Engines - A Review SAE Paper 831694 1983
- Geomez, A.J. Reinke P.E. Lean Burn: A Review of Incentives, Methods and Trade Offs SAE Paper 880291 1988
- Marsee, F.J. Olree R.M. Adams W.E. Compression Ratio Effects with Lean Mixtures SAE Transactions 86 2373 2397 1977
- Most, W.J. Longwell J.P. Single Cylinder Engine Evaluation of Methanol-Improved Energy Economy and Reduced NO x SAE Paper 750119 1975
- Brinkman, N.D. Ethanol Fuel - A Single Cylinder Engine Study of Efficiency and Exhaust Emissions SAE Paper 810345 1981
- Thring, R.H. Alternative Fuels for Spark Ignition Engines SAE Paper 831685 1983
- Wigg, E.E. Lunt R.S. Methanol as a Gasoline Extender-Fuel Economy, Emissions, and Temperature Driveability SAE Paper 741008 1974
- Yamaguchi, T. Sasayama T. The Effect of Methanol-Gasoline Mixing Ratio on Performance of I.C engines SAE Paper 900584 1990
- Ingamells, J.C. Lindquist R.H. Methanol as a Motor Fuel or a Gasoline Blending Component SAE Paper 750123 1975
- Menrad, H. Nierhauve B. Engine and Vehicle Concepts for Methanol-Gasoline Blends SAE Paper 831686 1983
- Brinkman, N.D. Gallopoulos N.E. Jackson M.W. Exhaust Emissions, Fuel Economy and Driveability of Vehicles Fueled with Alcohol-Gasoline Blends SAE Paper 750120 1975
- Hsia, J. Kuo L.K. Lin C.S. Liu J.T. Chou T.L. Effects of Methanol - Gasoline Blends on Performance, Emissions and Wear in SI Engines Proceedings of the VII International Symposium on Alcohol Fuels Paris 136 139 1986
- Takeda, S. Uchiyama H. An Eucalyptus Experiment Proceedings of the Fourth International Symposium on Alcohol Fuel Technology Guariya-Brazil 423 429 1980
- Takeda, S. Utilization of Eucalyptus Oil and Orange Oil for Small Passenger Cars SAE Paper 841332 1984
- ASTM Manual Standard Method for Distillation of Petroleum Products: American Society for Testing and Materials 7 20 1988
- SAE Handbook 3 Society of Automotive Engineers Warrendale, Pa. 1986
- Reed, T.B. Lerner R.M. Methanol: A Versatile Fuel for Immediate Use Science 182 4119 1299 1304 1973
- Wagner, T.O. Gray D.S. Zarah B.Y. Kozinski A.A. Practicality of Alcohols as Motor Fuel SAE Paper 790429 1979
- Ebersole, G.D. Manning F.S. Engine Performance and Exhaust Emissions: Methanol Vs. Iso-Octane SAE Paper 720692 1972
- Katoh, K. Imamura Y. Inoue T. Development of Methanol Lean Burn System SAE Paper 860247 1986
- Wigg, E.E. Methanol as a Gasoline Extender: A Critique Science 186 4166 775 780 1974
- A Technical Assessment of Alcohol Fuels Alternate Fuels Committee of Engine Manufacturers Association SAE Paper 820261 1982
- Clancy, J.S. Dunn P.D. Chawawa B. Ethanol as Fuel in Small Stationary Spark Ignition Engines for Use in Developing Countries I.Mech.E., C67/88 191 194 1988
- Patel, K.S. Kumar S. Kwon O.Y. The Performance Characteristics of lndolene - MPHA Blends in a Spark Ignition Engine SAE Paper 872068 1987
- Last, A.J. Lawson A. Simmons E.W. Mackay D. Tsang M. Maund G.B. Oxygen Sensor Equipped Engine Operation on Methanol/Gasoline Blends and Phase Separation Problems Proceedings of the Fourth International Symposium on Alcohol Fuel Technology Guariya-Brazil 2 225 231 1980
- Sapre, A.R. Properties, Performance and Emissions of Medium Concentration, Methanol-Gasoline Blends in a Single Cylinder, Spark Ignition Engine SAE Paper 881679 1988
- Kowalewicz, A. Efficiency of the SI Engine Fueled with Methanol-Gasoline Blends I.Mech.E. 208 123 128 1994
- Kowalewicz, A. Methanol as a Fuel for Spark Ignition Engines: A Review and Analysis I.Mech.E. 207 43 52 1993
- Poola, R.B. Nagalingam B. Mehta P.S. Hydrocarbon Modeling for a Two-Stroke SI Engine SAE Paper 940403 1994