Flattening the Torque Curve of a Two-Stroke Engine with a Fluid Diode Installed at the Scavenge Port
830092
02/01/1983
- Event
- Content
- 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.
- Pages
- 11
- Citation
- Sher, 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.