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A Study of Fuel Economy in Small, Piston Ported Two-Stroke Engines
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English
Abstract
A previously developed mathematical model of an operating two-stroke engine was modified to predict fresh air/fuel mixture loss through the exhaust port. At some operating conditions, losses as high as 30% of the newly scavenged mixture were predicted.
A servovalve is proposed for placement downstream of the exhaust port. By sensing the temperature of the exhaust flow and closing the valve when this temperature falls below some set temperature, the loss in fresh mixture was predicted to be reduced to virtually zero. This was accompanied by an increase in power.
Authors
Citation
Margolis, D. and Saxena, M., "A Study of Fuel Economy in Small, Piston Ported Two-Stroke Engines," SAE Technical Paper 810294, 1981, https://doi.org/10.4271/810294.Also In
References
- Batoni G. “An Investigation into the Future of Two-Stroke Motorcycle Engines,” SAE Paper No. 780710
- Margolis D. L. “Modeling of Two-Stroke Internal Combustion Engine Dynamics Using the Bond Graph Technique,” 1975 SAE Transactions 2263 2275
- Karnopp D. C. Rosenberg R. C. “System Dynamics: A Unified Approach,” Wiley and Sons New York 1975