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Effects of Helical Port with Swirl Control Valve on the Combustion and Performance of S. I. Engine
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English
Abstract
A helical port with a swirl control valve (SCV) has been developed to satisfy two inconsistent requirements of achieving sufficient swirl generation to improve the combustion and still maintaining high volumetric efficiency.
Their effects on combustion were confirmed in a single cylinder engine using high speed flame photography and cylinder pressure diagram analysis which has demonstrated faster combustion.
As a result of a hot wire anemometer study, the differences in gas motion were clarified between two helical ports, one with and one without a SCV. A more active movement of the center of swirl was measured in the case of helical port with SCV which suggests the generation of higher turbulence in the cylinder.
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Citation
Matsushita, S., Inoue, T., Nakanishi, K., Okumura, T. et al., "Effects of Helical Port with Swirl Control Valve on the Combustion and Performance of S. I. Engine," SAE Technical Paper 850046, 1985, https://doi.org/10.4271/850046.Also In
References
- Inoue, T. Nakanishi, K. Noguchi, H. Iguchi S. Someya, T. “The Role of Swirl and Squish in Combustion of the S.I. Engine,” 18th FISITA 80444 1980
- Patterson, D. J. “Cylinder Pressure Variations, A Fundamental Combustion Problem.” SAE paper 660129
- Inoue, T. et al Toyota Engineering (in Japanese) 30 2 1980 22 30
- Quader, A. A. “What Limits Lean Operation in Spark Ignition Engine - Flame Initiation or Propagation?” SAE paper 760760
- Hamamoto Y. Shibagaki, G. JSAE Pre-prints (in Japanese) 761 A3 1976 17 25