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Numerical Analysis of Gas Exchange Process in a Small Two-Stroke Gasoline Engine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 28, 1999 by SAE International in United States
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To survive the severe regulations for both the exhaust gas emissions and fuel economy, research on small two-stroke gasoline engines from both the experimental and theoretical viewpoints is quite necessary. In the present study, firstly, performance tests of a direct injection small two-stroke gasoline model engine were carried out. Based on these experimental results, three-dimensional flow calculations from scavenging pipe to exhaust pipe during the gas-exchange and piston compression processes were made with the same experimental conditions. As a result, the gas exchange process was investigated and some problems were clarified. Secondly, parametric calculations with changing just exhaust port timings were performed to solve the problems found in the above calculations.
CitationMoriyoshi, Y., Mori, K., and Morikawa, K., "Numerical Analysis of Gas Exchange Process in a Small Two-Stroke Gasoline Engine," SAE Technical Paper 1999-01-3330, 1999, https://doi.org/10.4271/1999-01-3330.
- Hata Noriyuki and Iio Toshimitsu, “Improvement of Two-Stroke Engine Performance with the Yamaha Power Valve System (YPVS)”, SAE paper No.810922.
- Nomura Kazuhiko, et al., “Improvement of Fuel Consumption withVariable Exhoust Port Timing in a Two-Stroke Gasoline Engine”, SAE Paper No.850183.
- Uchinishi Eizabro, et al., “Development of Automatic Exhaust Valve Control Device KIPS for 2 Stroke Engine”, Int. Combustion Engine (in Japanese) 28-355 (1989) 54.
- Morikawa Koji et al., “A Study of Exhaust Emission Control for Direct Fuel Injection Two-Stroke Engine”, SAE paper 99SETC-91