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Experimental Study of the Scavenging and Combustion Processes in a Two-Stroke Cycle Research Engine
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Abstract
Experimental investigations of the scavenging, mixture preparation and combustion processes occurring in a blower-scavenged, direct-injected, two-stroke cycle research engine are presented. As the delivery ratio is increased, combustion performance deteriorates rapidly. We used a variety of diagnostic techniques to investigate the causes of this behavior, including pressure measurements, schlieren and Mie-scattering flow visualization, and ionization-probe determination of flame-arrival times. By comparison with premixed-charge operation of the engine, we conclude that the improved scavenging that accompanies increased delivery ratio results in cooler gas temperatures that inhibit fuel vaporization, leading to a highly nonhomogeneous fuel-air mixture at the time of combustion.
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Citation
Bopp, S., Cousyn, B., Green, R., and Witze, P., "Experimental Study of the Scavenging and Combustion Processes in a Two-Stroke Cycle Research Engine," SAE Technical Paper 920183, 1992, https://doi.org/10.4271/920183.Also In
References
- Ferguson, C. R. Internal Combustion Engines, Applied Thermosciences John Wiley & Sons 1986
- Heywood, J. B. Internal Combustion Engine Fundamentals McGraw-Hill Book Co. 1988
- Siuru, W. D. “The Australian Two-Stroke,” Mechanical Engineering 130 July 1988
- Green, R. M. Cousyn, B. J. “An Optical Research Engine for the Study of Two-Stroke Cycle Engine In-Cylinder Phenomena,” COMODIA 90 Intl. Symp. on Diagnostics and Modeling of Combustion in Internal Combustion Engines Kyoto, Japan 1990
- Blair, G. P. The Basic Design of Two-Stroke Engines Society of Automotive Engineers Warrendale 1990
- Schechter, M. M. Levin, M. B. “Air-Forced Fuel Injection System for 2-Stroke D.I. Gasoline Engine,” SAE Paper No. 910664 1991
- Emerson, J. Felton P. G. Bracco, F. V. “Structure of Sprays from Fuel Injectors, Part III: The Ford Air-Assisted Fuel Injector,” Trans. SAE 99 1074 1990
- Rassweiler, G. M. Withrow, L. “Motion Pictures of Engine Flames Correlated with Pressure Cards,” Trans. SAE 42 185 1938
- Witze, P. O. “Cycle-Resolved Multipoint Ionization Probe Measurements in a Spark Ignition Engine,” Trans. SAE 98 2074 1989