This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Additive Effects on Atomization and Evaporation of Diesel Fuel Under Engine Conditions
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 24, 1997 by SAE International in United States
Annotation ability available
The objective of this work was to establish whether two detergent-type additives(A and B) influence the drop size and evaporation of two Diesel fuels (1 and 2) under Diesel engine conditions. Two experiments were performed: visualization of liquid and vapor fuel by the exciplex technique in a motored single-cylinder engine and measurement of the Sauter mean diameter, total drop cross sectional area and total drop volume by laser diffraction in a spray chamber. The same Diesel injector and pump system were used in the two experiments. The engine tests were carried out using a high aromatic content fuel (1) particularly suited for the exciplex studies. These studies showed that additive A yielded a lower vapor signal than additive B, which in turn gave a lower vapor signal than untreated fuel. Spray chamber results were obtained for both fuel 1 and 2. Additive A reduced the evaporation of fuel 1 whereas additive B gave a smaller and less consistent affect. For fuel 2, which is more typical of modern Diesel fuels than fuel 1, neither additive had measurable effects on the vaporization of the fuel. These measurements were difficult and were not quantitative. However, it is striking that two different experiments and experimental techniques indicated that additive A reduced the vaporization of fuel 1. However, we were not able to establish whether the reduced vaporization was due to altered atomization or to changes in the vaporization itself. In contrast the same experimental technique showed no changes in vaporization for fuel 2. More detailed investigation is required to understand this unexpected result.
CitationFelton, P., Pan, G., Bracco, F., and Yeh, L., "Additive Effects on Atomization and Evaporation of Diesel Fuel Under Engine Conditions," SAE Technical Paper 970795, 1997, https://doi.org/10.4271/970795.
- “EPA National Air Pollution Emission Trends, 1900-1994” EPA-454/R-95-011 October 1995
- Melton, L.A. “Spectrally Separated Fluorescence Emissions for Diesel Fuel Droplets and Vapor” Appl. Optics 22 2224 6 1983
- Melton, L.A. Verdieck, J.F. “Vapor/Liquid Visualization in Fuel Sprays” Twentieth Symp. (International) on Combustion The Combustion Institute 1283 1290 1984
- Melton, L.A. Verdieck, J.F. “Vapor/Liquid Visualization for Fuel Sprays” Combust. Sci. and Tech. 42 217 222 1985
- Bardsley, M.E.A. Felton, P.G. Bracco, F.V. “2-D Visualization of a Hollow-Cone Spray in a Cup-in-Head, Ported, I.C. Engine” SAE Paper 890315 1989
- Felton, P.G. Bracco, F.V. Bardsley, M.E.A. “On the Quantitative Application of Exciplex Fluorescence to Engine Sprays” SAE Paper 930870 1993
- Winter, M. Melton, L.A. “Measurement of Internal Circulation in Droplets Using Laser-Induced Fluorescence” Applied Optics 29 4574 7 1990
- Bardsley, M.E.A. Felton, P.G. Bracco, F.V. “2-D Visualization of Liquid and Vapor Fuel in an IC Engine” SAE Paper 880521 1988
- Melton, L.A. “Quantitative Use of Exciplex-Based Vapor/Liquid Visualization Systems (A Users Manual)” Final Report, Army Research Office Contract DAAL03-86-K-0082 1988
- Lee, C.F. Bracco, F.V. “Comparisons of Computed and Measured Hollow-Cone Sprays in an Engine” SAE Paper 950284 1995 “Engine and Multidimensional Engine Modeling
- Felton, P.G. “A Review of the Fraunhofer Diffraction Particle-Sizing Technique,” Liquid Particle Size Measurement Techniques: 2nd Volume ASTM STP 1083 Dan Hirleman E. Bachalo W.D. Felton P.G. ASTM Philadelphia 1990 47 59
- Felton, P.G. Hamidi, A.A. Aigal, A.K. “Measurement of Drop Size Distribution in Dense Sprays by Laser Diffraction,” ICLASS-85, Paper No. IVA/4 1985
- Malvern Instruments “2600 Particle Sizer User Manual” Malvern, U.K.