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Flattening the Torque Curve of a Two-Stroke Engine with a Fluid Diode Installed at the Scavenge Port
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1983 by SAE International in United States
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The typical convex torque of a simple two-stroke engine having a port-controlled piston is attributed to the backflow through the scavenge ports. It is proposed here to suppress the backflow by installing scroll diodes at the scavenge ports. Experimental observations on a fired engine demonstrate the remarkable improvement achieved with the diodes installed. The effect of the diodes presence on the engine power and on the delivery ratio is discussed by using a recorded diagram of the crankcase pressure variation with crank-angle during the gas exchange process.
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CitationSher, E. and Yafe, H., "Flattening the Torque Curve of a Two-Stroke Engine with a Fluid Diode Installed at the Scavenge Port," SAE Technical Paper 830092, 1983, https://doi.org/10.4271/830092.
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