Study on the Primary breakup of Fuel Spray in Multi-hole Injector for Direct Injection Gasoline engines
直噴ガソリン用マルチホールインジェクタにおける燃料噴霧の一次分裂形態に関する研究
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- Publication code
- 20214584
- Paper/Info type
- JSAE Transaction
Vol.52 No.4
- Pages
- 833-838(Total 6 p)
- Date of publication
- Jul 2021
- Publisher
- JSAE
- Language
- Japanese
Detailed Information
| Category(J) | 研究論文 Translation |
|---|---|
| Category(E) | ResearchPaper |
| Author(J) | 1) 安間 弘喜, 2) 立花 三奈, 3) 前島 辰哉, 4) 松村 恵理子, 5) 千田 二郎 |
| Author(E) | 1) Koki Yasuma, 2) Mina Tachibana, 3) Tatsuya Maejima, 4) Eriko Matsumura, 5) Jiro Senda |
| Affiliation(J) | 1) 同志社大学大学院, 2) 同志社大学大学院, 3) 同志社大学大学院, 4) 同志社大学, 5) 同志社大学 |
| Abstract(J) | 燃料噴霧モデリングの精度には，液滴分裂モデルが大きく影響する．直噴ガソリン用マルチホールインジェクタでは，噴孔内部の乱れにより現象が複雑化するため，分裂形態は未解明である．本研究では，上記インジェクタにおける分裂形態を解明するため，顕微鏡レンズと高速度カメラを用いて噴霧根元部の拡大撮影を行なった。 Translation |
| Abstract(E) | In recent years, Computational Fluid Dynamics (CFD) has been widely used in engine development, and it is known that the accuracy of the droplet breakup model has a great influence on the modeling of fuel sprays in CFD. In this laboratory, WAVE-MTAB model is used as a droplet breakup model for gasoline spray and its applicability is verified. However, WAVE-MTAB model was developed for diesel sprays, and it is reported to have limitations in its applicability to gasoline engines that inject relatively low pressure fuel. The purpose of this study is to elucidate the primary breakup form of the fuel spray in the multi-hole injector for direct gasoline injection, and to develop a breakup model that corresponds to the actual phenomenon. In order to visualize the primary breakup process of the fuel spray under low injection pressure conditions, we took enlarged images of the spray near the nozzle hole using a high-speed camera and microscope lens. |
