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Surrounding gas pressure and temperature dependence of the auto-ignition phenomenon for ethanol-dietyl ether blended fuels |
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| รหัสดีโอไอ | |
| Creator | H. SAITOH and K. UCHIDA |
| Title | Surrounding gas pressure and temperature dependence of the auto-ignition phenomenon for ethanol-dietyl ether blended fuels |
| Publisher | Thai Society of Mechanical Engineers |
| Publication Year | 2559 |
| Journal Title | Journal of Research and Applications in Mechanical Engineering |
| Journal Vol. | 4 |
| Journal No. | 1 |
| Page no. | 79-86 |
| Keyword | Auto-ignition, Mixture formation, Alcohol spray, CI engine, 3D-mapping |
| ISSN | 2229-2152 |
| Abstract | This study deals with the development of controlled-ignition technology for high performance compression ignition alcohol engines. The objective of this study is quantitative evaluation of main factors that influence auto-ignition of an alcohol spray. The quantitative evaluation that can be finally as the database in a form of 3D-mapping of ignition delay is now in progress. This paper focuses on the effects of surrounding gas pressure and temperature on auto-ignition. Spray mixture formation and auto-ignition phenomena of Ethanol-Diethyl ether blended fuels were visualized by shadowgraph method and images were recorded with high-speed camera (8213 fps). A large constant volume electrical heating chamber was used in the visualization tests. The results as the first step of 3D-mapping of ignition delay showed that the auto-ignition of Ethanol-Diethyl ether blended fuels was strongly influenced by surrounding gas pressure under relatively lower temperature condition (750K). In higher temperature condition (800K), surrounding gas pressure dependence of the ignition delay was smaller than those of the 750K case. This paper indicates that the engine control logic can be drawn and the high performance CI engines flexible for any kinds of bio-fuels can be developed when the database as 3D-mapping of the ignition delay is completed. |
