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A Visual Study of D.I. Diesel Combustion from the Under and Lateral Sides of an Engine
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English
Abstract
A high-speed photographic study is presented illustrating the influence of engine variables such as an introduced air swirl, the number of nozzle holes and the piston cavity diameter, on the combustion process in a small direct-injection (D.I.) diesel engine. The engine was modified for optical access from the under and lateral sides of the combustion chamber. This modification enabled a three-dimensional analysis of the flame motion in the engine. The swirling velocity of a flame in a combustion chamber was highest in the piston cavity, and outside the piston cavity it became lower at the piston top and at the cylinder head in that order. The swirl ratio of the flame inside the cavity radius attenuated gradually with piston descent and approached the swirl ratio outside the cavity radius, which remained approximately constant during the expansion stroke. Engine performance was improved by retarding the attenuation of the swirl motion inside the cavity radius.
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Citation
Hiroyasu, H., Nishida, K., Arai, M., and Yoshikawa, S., "A Visual Study of D.I. Diesel Combustion from the Under and Lateral Sides of an Engine," SAE Technical Paper 861182, 1986, https://doi.org/10.4271/861182.Also In
References
- Alcock J. F. Scott W. M. “Some More Light on Diesel Combustion,” Proc. Instn. Mech. Engrs. (A.D.) 5 179 1962
- Nagao F. Ikegami M. Kiyota Y. Mitsuda T. Kawatei K. “A Study on Combustion in Direct-Injection Diesel Engines (1st Report, In the Case of Shallow-Dish Chamber),” Bulletin of the JSME 16 93 588 1973
- Shiozaki T. Suzuki T. Shimoda M. ‘'Observation of Combustion Process in D.I. Diesel Engine via High Speed Direct and Schlieren Photography,” SAE Paper 800025 1980
- Binder K. Hilburger W. “Influence of the Relative Motions of Air and Fuel Vapor on the Mixture Formation Processes of the Direct Injection Diesel Engine,” SAE Paper 810831 1983
- Kihara R. Mikami Y. Klnbara M. “The Advantage of the Isuzu Square Combustion Chamber for D.I. Engines,” SAE Paper 830372 1983
- French C. C. J. “A Universal Test Engine for Combustion Research,” SAE Paper 830453 1983
- Falcus M. Clough E. Whitehouse N. D. Nowell E. “Photographic Studies of Diesel Combustion in a Quiescent Combustion Chamber,” SAE Paper 831292 1983
- Shimoda M. Shigemori M. Tsuruoka S. “Effect of Combustion Chamber Configuraion on In-CyUnder Air Motion of D.I. Diesel Engine,” Proceedings of Diagnostics and Modeling of Combustion in Reciprocating Engines 353 1985
- Kanairo K. Hirakouchi N. Sekino M. Nakagawa H. “Study of High Speed Diesel Engine Combustion using High Speed Photography - Attempt to Obtain All Aspects of Combustion and Its Improvement,” Proceedings of Diagnostics and Modeling of Combustion in Reciprocating Engines 373 1985
- Monaghan M. L. Pettifer H. F. “Air Motion and Its Effect on Diesel Performance and Emissions,” SAE Paper 810255 1981
- Bertodo R. Dowries T. W. E. Middlemiss I. D. “Evolution of a New Combustion System for Diesel Emission Control,” SAE Paper 741131 1974
- Kihara R. Kinbara M. “Combustion System Component Design of a High Speed Small D.I. Diesel Engine,” SAE Paper 820500 1982
- Shigemori M. Tsuruoka S. Shimoda M. “Development of a Combustion System for a Light Dudy D.I. Diesel Engine,” SAE Paper 831296 1983
- Fitzgeorge D. Allison J. L. “Air Swirl in a Road Vehicle Diesel Engine” Proc. Instn. Mech. Engrs. (A.D.) 4 1962
- Pischinger F. “Entwicklungarbeiten an eineni Verbrennungssystem fur Fahrzeugedieselmoto-ren,” ATZ, Jg.65-1 11 1963