This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Prevention of Fuel Film Formation by Ultrasonic Activation of the Fuel Impingement Surface
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 14, 2015 by SAE International in United States
Annotation ability available
This study considers one of the challenges that arise during conversion of gasoline SI engines to ‘heavy fuel’ feeding - worsening engine performance because of intensive fuel film formation on inner surfaces of the intake manifold. A main goal of this study was investigation of an interaction process of a single fuel drop and a fuel jet with the impingement surface. Ultrasonic (US) oscillation of the latter was applied to prevent fuel film formation. Diesel fuel was chosen for our experiments because it causes more problems of mixture formation in SI engines.
In the series of experiments with a single drop, effects of the drop size, ultrasound performance and a type of the impingement surface on the drop behavior were studied using a high-speed photography. In experiments with a fuel jet the phenomena of fuel film formation and size distribution of the impinging and reflected droplets were studied using a high-speed photography and PDPA/LDV technique. Obtained results showed a possibility of preventing the diesel fuel-film formation by US-activation of the impingement surface at different impingement angles, as well as in the case of a static fuel film. Sauter mean diameter (SMD) of the reflected droplets was found to be 80-110 μm and does not differ considerably from SMD of drops colliding with an activated as well as with a non-activated surface.
CitationTartakovsky, L., Amiel, R., Baibikov, V., and Veinblat, M., "Prevention of Fuel Film Formation by Ultrasonic Activation of the Fuel Impingement Surface," SAE Technical Paper 2015-01-0935, 2015, https://doi.org/10.4271/2015-01-0935.
- Baumgraten , C. Mixture formation in internal combustion engines Springer-Verlag Berlin Heidelberg, Germany 2006
- Behnia , M. and Milton , B.E. Fundamentals of fuel film formation and motion in SI engine induction system Energy conversion and management 42 1751 1768 2000
- Heywood , J.B. Internal combustion engines fundamentals McGraw-Hill 1989
- Arai , M. , Ishii , A. and Saito , M. Atomization behavior and energy analysis for a single droplet impinged on a surface oscillating with ultrasonic frequency Atomization and Sprays 17 601 620 2007
- Topp , M.N. Ultrasonic atomization - a photographic study of the mechanism of disintegration Aerosol Sci 4 17 25 1973
- Wood , R.W. and Loomis , A.L. The physical effects of high-frequency sound waves of great intensity Phil.Mag. 7 417 433 1927
- Sollner , K. Experiments to demonstrate cavitation caused by ultrasonic waves Trans. Faraday Soc. 32 1537 1538 1936
- Lang , R.J. Ultrasonic atomization of liquids Journal of the Acoustic Society of America 34 6 9 1962
- Boguslavski , Y. and Eknadiosyants , O. Physical mechanism of acoustic atomization of liquid Akusticheskij Zhurnal 15 1 17 24 1969
- Bassett , J.D. and Brught , A.W. Observation concerning the mechanism of atomization in an ultrasonic fountain Aerosol Science 7 47 51 1976
- Avvaru , B. , Patil , M.N. , Gogate , P.R. , Pandit , A.B. Ultrasonic atomization: effect of liquid phase properties Ultrasonics 44 146 158 2006