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Performance Tests of Reverse Uniflow-Type Two-Stroke Gasoline DI Engine
Technical Paper
2004-32-0040
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Conventional two-stroke engines have defects such as unstable combustion, high fuel consumption rate and high HC emissions. In order to overcome the defects, a direct fuel injection system and a novel scavenging system were adopted. The authors tested a newly developed reverse uniflow-type two-stroke direct injection gasoline engine that was designed by numerical simulations. In comparison with the base engine at low engine speed, HC emission was decreased by up to 80%, and BSFC was reduced by around 40%. Power and BSFC were superior to those of a latest port-injection four-stroke engine. Furthermore, it was found that engine performance of exhaust gas emissions, fuel economy or output power can be selectively optimized by switching homogeneous and stratified combustion.
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Moriyoshi, Y., Arai, M., Katsuta, J., and Morikawa, K., "Performance Tests of Reverse Uniflow-Type Two-Stroke Gasoline DI Engine," SAE Technical Paper 2004-32-0040, 2004, https://doi.org/10.4271/2004-32-0040.Also In
References
- Morikawa K. et al. A Study of Direct Fuel Injection Two-Stroke Engine for High Specific Power Output and High Engine Speed SAE Paper 1999-01-3288
- Fan et al. Multi-Dimensional Modeling of Mixing and Combustion of a Two-Stroke Direct-Injection Spark Ignition Engine SAE Paper 2001-01-1228
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- Ohnishi S. et al. Active Thermo-Atmosphere Combustion (ATAC)- A New Combustion Process for Internal Combustion Engines SAE Paper 790501
- Moriyoshi Yasuo Kikuchi Kazunori Morikawa Koji Takimoto Hideharu “Numerical Analysis of Mixture Preparation in a Reverse Uniflow Type Two-Stroke Gasoline DI Engine” SAE Paper, 2001-01-1815
- Morikawa Koji Takimoto Hideharu Ogi Taiichiroh “A Study of Direct Fuel Injection Two-Stroke Engine for High Specific Power Output and High Engine Speed” SAE Paper, 1999-01-3288