Unsteady Flow Effects in Exhaust Systems of Naturally Aspirated, Crankcase Compression Two-Cycle Internal Combustion Engines 680594
This paper attempts to illustrate some of the reflection characteristics of exhaust systems, suitable for piston ported, crankcase compression, naturally aspirated two-cycle engines. In particular, the application is even narrower, being concerned principally with those engines of the spark ignition, gasoline burning type where a high bmep is desirable. The two principal exhaust systems considered are the diffuser and the expansion chamber. Both are analyzed experimentally and theoretically and presented as measured and digitally computed pressure-time diagrams in simulated and actual engine exhaust systems. These are compared and discussed.
Citation: Blair, G. and Johnston, M., "Unsteady Flow Effects in Exhaust Systems of Naturally Aspirated, Crankcase Compression Two-Cycle Internal Combustion Engines," SAE Technical Paper 680594, 1968, https://doi.org/10.4271/680594. Download Citation
G. P. Blair, M. B. Johnston
Mechanical Engineering Dept., The Queen's University of Belfast
National Farm, Construction and Industrial Machinery Powerplant, Transportation