This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Visualization of Fuel-Air Mixing Processes in a Small D.I. Diesel Engine Using the Liquid injection Technique
Annotation ability available
Sector:
Language:
English
Abstract
Simplified visualization of the fuel spray developing process in a small D.I. diesel engine was made by the liquid injection technique. In this technique, a liquid fuel was injected into another liquid to simulate injection into a high pressure gaseous atmosphere. For obtaining spray characteristics in the liquid similar to a diesel spray in a high-pressure gaseous atmosphere, the similarity principles based on the Reynolds number of the fuel flow at a nozzle hole and empirical equations of the spray penetration including the breakup length were introduced in this study. Especially, the injector was newly designed for the liquid injection technique based on these similarity principles. The behavior of the spray in a swirling flow was investigated. The spray with different breakup length shows different behavior in the same swirling flow. The spray with higher injection pressure shows a larger spray angle, lower dispersion by the swirling flow before impingement with a combustion chamber wall, but wider distribution along the wall after the impingement. The effect of a combustion chamber shape on the spray developing process was also investigated.
Authors
Citation
Yoshikawa, S., Nishida, K., Arai, M., and Hiroyasu, H., "Visualization of Fuel-Air Mixing Processes in a Small D.I. Diesel Engine Using the Liquid injection Technique," SAE Technical Paper 880296, 1988, https://doi.org/10.4271/880296.Also In
References
- Nagao, F. Ikegami, M. Kiyota, Y. Mitsuda T. Kawatei, K. “A Study on Combustion in Direct-Injection Diesel Engines,” Bulletin of the JSME (in Japanese) Vol. 16 No. 93 588 1973
- Kihara, R. Mikami Y. Kinbara, M. “The Advantage of the Isuzu Square Combustion Chamber for D.I. Engines,” SAE Paper 830372 1983
- Shimoda, M. Shigemori M. Tsuruoka, S. “Effect of Combustion Chamber Configuration on In-Cylinder Air Motion of D.I. Diesel Engine,” Proceedings of Diagnostics and Modeling of Combustion in Reciprocating Engines 353 1985
- Hiroyasu, II. Nishida, K. Arai M. Yoshikawa, S. “A Visual Study of D.I. Diesel Combustion from the Under and Lateral Sides of an Engine,” SAE Paper 861182 1986
- Wasscnaar, II. Institute of Mechanical Engineers Proc. Auto Div. No.9 247 266 1954–1955
- Hiroyasu II. Kadota, T. “Observation of Spray Behavior with the Liquid Injection Technique,” Bulletin of the Faculty of Engineering (in Japanese ) Hiroshima University Vol. 21 95 1973
- Gray J.T. Meckel, N.T. “Some Observation on the Liquid Injection Technique as a Research Tool,” SAE Paper 660748 1966
- Lustgarten, G. “Model Investigation of the Mixing and Combustion Process in the Diesel Engine,” Sulzer Technical Review 1974
- Way, J.B. “Investigation of Interaction Between Swirl and Jets in Direct Injection Diesel Engines Using a Water Model,” SAE Paper 770412 1977
- Idoum, A. Packer, J.P. Wallace F.J. Charlton, S.J. “An Experimental and Analytical Study of Jet Impingement and Wall Jets in High Swirl D.I. Diesel Engines using the Hydraulic Analogy,” SAE Paper 850263 1985
- Arai, M. Tabata, M. Hiroyasu H. Shimizu, M. “Disintegrating Process and Spray Characterization of Fuel Jet Injected by a Diesel Nozzle,” SAE Paper 840275 1984
- Levich, V.G. “Physicochemical Hydrodynamics,” Prentice-Hall Inc. 639 650 1962
- Murakami, A. Hiroyasu H. Arai, M. “Time and Space Resolved Measurement of Air Motion in a Cylinder of Direct-Injection Diesel Engine,” SAE paper 861229 1986