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An Experimental Investigation of Two-Stroke Internal Combustion Engine Performance
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English
Abstract
The relation between the power and the pressure-time history at the exhaust port of a high performance two-stroke engine is explored. Through the use of a variable length expansion chamber with five different tailpipes, the effect on power of stuffing pulse arrival time, magnitude and duration was found. The results from this set of tests are compared with those of two side exit expansion chambers and an inverted tailpipe expansion chamber.
Tests were also made to determine how mid-range torque and high speed torque effect of the performance of the motorcycle. An optimum configuration (pipe length and tail pipe length) was found for the 360 Yamaha tested.
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Kelsay, R. and Margolis, D., "An Experimental Investigation of Two-Stroke Internal Combustion Engine Performance," SAE Technical Paper 750859, 1975, https://doi.org/10.4271/750859.Also In
References
- Blair G. P., and Johnston M. B., “Simplified Design Criteria for Expansion Chambers for Two-Cycle Gasoline Engines”, Paper 700123 presented to American Engineering Congress, Detroit, Michigan, January 1970.
- Huelsse W. A., “Investigation and Tuning of the Exhaust System of small Two-Stroke Cycle Engines”, Paper 680469, SAE.
- Karnopp D. C., Dwyer H. A., and Margolis D. L., “Research on Two-Stroke Engine Exhaust System Silencing”, Department of Mechanical Engineering, UC Davis, June 1974.
- Naito H., and Nomura K., “Some New Development Aspects of a Two-Stroke Cycle Motorcycle Engines”, Paper 710084 presented to American Engineering Congress, Detroit, Michigan, January 1971.
- Naito H., and Taguchi M., “Some Development Aspects of Two-Stroke Cycle Motorcycle Engines,” Paper 660394, SAE.
- Shaeffer B. L., “Better Breathing Improves Two-Stroke Engine Power”, SAE Journal, July 1970.
- Waker C., “The Present Day Efficiency and the Factors Governing the Performance of Small Two-Stroke Engines”, Paper 660009, SAE.