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Improvement of Mixture Formation in a Uniflow-Scavenged Two-Stroke Engine
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Abstract
After a brief introduction on the importance of mixture formation in diesel engines and the contribution of uniflow scavenging to it, the physical properties of rotary flow induced by uniflow scavenging are considered. The velocity and acceleration fields of rotational and potential flows, which form part of the rotary flow, are determined.
The well-known feature of rotary flow is the separation of particles, which has a negative effect on mixture formation. The mathematical solution to this problem being very complicated, the experimental method of using the scavenging model has been choosen.
The theoretical considerations and the experimental results obtained have yielded sufficient information to determine the guidelines for designing improved fuel injection nozzles. Engine tests have contributed to finding nozzles with a suitable hole configuration for better engine performance.
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Dedeoglu, N., "Improvement of Mixture Formation in a Uniflow-Scavenged Two-Stroke Engine," SAE Technical Paper 901536, 1990, https://doi.org/10.4271/901536.Also In
References
- Dedeoglu, N. “Scavenging Model Solves Problems in Gas Burning Engine” SAE Paper No. 710579 1971
- Sanborn, D.S. Dedeoglu, N. “Investigations on Scavenging of Two-Stroke Engines” SAE-Paper No. 881264 1988
- Willis, D.S. Meyer, W.E. Birnie, C. Jr. “Mapping of Air-Flow Patterns in Engines with Induction Swirl” SAE-Paper No. 660093 1966
- Dedeoglu, N. “Comprehensive Report on Uniflow Scavenging Model Tests” Unpublished Internal Report Sulzer Bros. Winterthur 1985
- Wakuri, Y. Ono, S. Kido, H. Takasaki, K. “Experimental Study on the Exhaust Smoke of a Diesel Engine with Variable Angle Swirler” Bulletin of JSME 24 July 1981 193 1198 1205
- Schmidt, K.R. 23 1963 491 501
- Smith, J.L. Jr. “An Analysis of the Vortex Flow in the Cyclone Separator” Transactions of the ASME, Journal of Basic Engineering Dec. 1962 602 618
- Bronstein, I.N. Semendjajew, K.A. 1959