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SOME MORE LIGHT ON DIESEL COMBUSTION
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English
Abstract
This paper discusses the process of combustion, as revealed by high speed cinematography, in a small high speed diesel. Two direct injection types and one prechamber type were examined, and combustion sequences are shown. The phenomena are complex, but the main features are:
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(1)
In small engines much of the fuel strikes the chamber wall and moves along it.
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(2)
Swirl is greater than has hitherto been supposed, squish much less.
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(3)
Most of the flame is of the carbon-rich diffusion type.
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(4)
Soot from very rich mixture is always formed at high loads, but can burn later leaving a clean exhaust.
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(5)
Combustion knock does not seem to be related to the total fuel in the chamber on ignition, but rather to the amount of fast burning mixture present.
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Citation
Alcock, J. and Scott, W., "SOME MORE LIGHT ON DIESEL COMBUSTION," SAE Technical Paper 640446, 1964, https://doi.org/10.4271/640446.Also In
References
- Rothrock, A. M. ‘The N.A.C.A. apparatus for studying the formation and combustion of fuel sprays and the results from preliminary tests’ U.S. National Advisory Committee for Aeronautics, Report No. 429 1932
- Nagao, F. Kakimoto, H. ‘Swirl and combustion in divided combustion chamber type diesel engines’ Trans. Soc. automot. Engrs, N.Y 1962 70 680
- Alcock, J. F. Watts, R. ‘The combustion process in high speed diesel engines’ Proc. Congrès International des Machines à Combustion (CIMAC) 1959 Paris 1960 246
- Hempson, J. G. G. ‘Special control equipment for the Fastax camera’ Proc. Fifth International Congress on High Speed Photography 1959 171
- Lyn, W. T. Valdmanis, E. ‘The application of high speed Schlieren photography to diesel combustion research’ J. photo. Science 1962 10
- Rothrock, A. M. Waldren, C. D. ‘Some effects of injection advance angle, engine jacket temperature and speed on combustion in a compression-ignition engine’ U.S. National Advisory Committee for Aeronautics, Report No. 525 1935
- Alcock, J. F. ‘Air swirl in oil engines’ Proc. Instn mech. Engrs 1934 128 123
- Alcock, J. F. MacLellan, G. D. S. ‘Thermocentrifugal convection’ Proc. Eighth International Congress on Theoretical and Applied Mechanics 1952 Instanbul 1953 385
- Dicksee, C. B. The high-speed compression ignition engine 1940 178 Blackie London
- Austen, A. E. W. Lyn, W. T. ‘Relation between fuel injection and heat release in a direct injection engine and the nature of the combustion processes’ Proc. Auto. Div. Instn mech. Engrs 1960–61 47