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The Measurement and Control of Cyclic Variations of Flow in a Piston Cylinder Assembly
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 03, 2003 by SAE International in United States
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The existence of the cyclic variation of the flow inside an cylinder affects the performance of the engine. Developing methods to understand and control in-cylinder flow has been a goal of engine designers for nearly 100 years. In this paper, passive control of the intake flow of a 3.5-liter DaimlerChrysler engine was examined using a unique optical diagnostic technique: Molecular Tagging Velocimetry (MTV), which has been developed at Michigan State University. Probability density functions (PDFs) of the normalized circulation are calculated from instantaneous planar velocity measurements to quantify gas motion within a cylinder. Emphasis of this work is examination of methods that quantify the cyclic variability of the flow. In addition, the turbulent kinetic energy (TKE) of the flow on the tumble and swirl plane is calculated and compared to the PDF circulation results.
- Harold Schock - Automotive Research Experiment Station, Michigan State University
- Yuan Shen - Automotive Research Experiment Station, Michigan State University
- Edward Timm - Automotive Research Experiment Station, Michigan State University
- Tom Stuecken - Automotive Research Experiment Station, Michigan State University
- Andrew Fedewa - Automotive Research Experiment Station, Michigan State University
- Philip Keller - DaimlerChrysler Corporation
CitationSchock, H., Shen, Y., Timm, E., Stuecken, T. et al., "The Measurement and Control of Cyclic Variations of Flow in a Piston Cylinder Assembly," SAE Technical Paper 2003-01-1357, 2003, https://doi.org/10.4271/2003-01-1357.
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