This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Surface Layer Which Reduces the Octane Number Requirement and ORI in Gasoline Engines
Annotation ability available
Sector:
Language:
English
Abstract
The surface of the combustion chamber is intended to absorb electromagnetic radiation from the flame at frequencies that coincide with the resonant absorption frequencies of the fuel. This prevents resonant energy transfer to the fuel, avoiding or suppressing formation of undesired radicals.
The surface consists of two layers, one absorbing layer on the top and one second layer functioning as a transient heat buffer.
The following advantages have been observed:
- Reduced octane number requirement of the engine.
- The ORI (Octane Requirement Increase) does not increase after the running, due to less deposits.
- Increased performance with low octane fuels through advanced ignition timing.
- The limit for run-away knock occurs later at high load.
- Lower HC emissions.
Citation
Wicén, J., Mattsson, C., Niklasson, R., and Rindegard, B., "Surface Layer Which Reduces the Octane Number Requirement and ORI in Gasoline Engines," SAE Technical Paper 952392, 1995, https://doi.org/10.4271/952392.Also In
References
- Heywood J. B. “Internal Combustion Engine Fundamentals” McGraw-Hill International editions 1988
- 24 1993 4
- Kjell Bergström FFV Underhäll Linköping, Sweden Internal report
- Rolf Westin Nyköping, Sweden Internal report
- “ASTM Manual for Rating Motor, Diesel, and Aviation Fuels” 1974-1975
- Uppsala, Sweden Internal report
- Odgers J. Kretschmer D. “The effect of fuel composition upon heat transfer in gas turbine combustors” Université Laval Quebec, Canada
- Stuart Kelley “The Transfer of Radiation From a Flame to its Fuel” J. FIRE & FLAMMABILITY 4 January 1973 56
- “Influence of Temperature on the Integral Intensities of Vibration Rotation Absorption Bands of Water and Carbon dioxide” J. Appl. Spectrosc. 34 3 Mar 1981 320 324
- Quader Ather A. Myers Phillip S. Uyehara Otto A. “UV Absorbance Histories and Knock in a Spark Ignited Engine” SAE 690519
- Abata Duane L. Myers Phil S. Uyehara Otto A. “Spectroscopic Investigation of Hydroxyl Radical Formation in the End Gases of a Spark-Ignited Engine Utilizing a Dye Laser” SAE 780970
- Annad W. J. D. “Heat Transfer From Flames in Internal-Combustion Engines” Simon Engineering Laboratories, University of Manchester England
- Peter Swedenlindh “Solabsorberande egenskaper hos svartkrom” Uppsala, Sweden
- Lars Henriksson Nynäs, Sweden Internal report
- de Boer C. D. Ricardo Consulting Engineers England Internal report
- “Hydra test” Internal report
- “Saab motor test” Internal report