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Estimation of the Fresh Mixture Leakages During the Scavenging of Two-Stroke Engines
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English
Abstract
During the scavenging of a two-stroke engine, it can be assumed that a very small quantity of fresh mixture flows from the scavenging ports and also from the crankcase through the gap between the cylinder and the piston to the exhaust port, in order to assess the effects of these leakages on fuel economy and hydrocarbon emissions, the authors calculated the quantity of mixture lost using the time-areas of the flow paths and the pressure-time history in the crankcase, and found that this quantity was in the order of 1-3% of the inducted fresh mixture.
Authors
Citation
Ishihara, S. and Murakami, Y., "Estimation of the Fresh Mixture Leakages During the Scavenging of Two-Stroke Engines," SAE Technical Paper 891804, 1989, https://doi.org/10.4271/891804.Also In
References
- Oka T. Ishihara S. Relation between Scavenging Flow and Its Efficiency of a Two-Stroke Cycle Engine Bulletin of the JSMS 14 69 1971 257
- Ishihara S. Oka T. Improvement of Measurement of Trapping Efficiency for 2-Stroke Cycle Engine by Analyzing Exhaust Gases Internal Combustion Engine (Nainenkikan) 9 93 1970 11