Analysis of Spray Characteristics of Direct Injection SI Engines under Cold Start Conditions
低温環境下における直噴ガソリン噴霧の挙動解析
- Delivery
- Available on the other site
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- Publication code
- 20224209
- Paper/Info type
- JSAE Transaction
Vol.53 No.3
- Pages
- 491-496(Total 6 p)
- Date of publication
- May 2022
- Publisher
- JSAE
- Language
- Japanese
Detailed Information
| Category(J) | 研究論文 Translation |
|---|---|
| Category(E) | ResearchPaper |
| Author(J) | 1) 前川 楓馬, 2) 松田 大, 3) 松村 恵理子, 4) 千田 二郎, 5) 大隈 正寛, 6) 齋木 優佑 |
| Author(E) | 1) Fuma Maekawa, 2) Dai Matsuda, 3) Eriko Matsumura, 4) Jiro Senda, 5) Masahiro Okuma, 6) Yusuke Saiki |
| 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, 4) 同志社大学, 5) デンソー, 6) デンソー |
| Abstract(J) | 低温環境下における直噴ガソリンエンジンの噴霧挙動はPM/PN抑制の観点から重要である．本研究では低温環境下におけるの噴霧挙動の把握を目的とし，先行研究例が少ない-20℃までの極低温状態を想定し，自由噴霧と壁面衝突噴霧の特性を計測し解析を行った．その結果を報告する． Translation |
| Abstract(E) | In this study, the spray behavior of direct injection gasoline engines is analyzed under low temperature conditions. DISI engines have a problem of the emission characteristics during cold start. Fuel injection is closely related to PM/PN. The purpose of this study is to understand the spray behavior under low temperature conditions. The experimental equipment to control the fuel temperature and the wall temperature was constructed assuming low temperature condition up to -20°C (253K). The characteristics of free spray and wall impingement spray were measured and analyzed. As the fuel temperature decreased, the spray tip penetration increased by 4.7 % at a fuel temperature of 273 K and by 8.4 % at fuel temperature of 253 K compared to 293 K. The spray angle decreased by 6.4 % at 273 K compared to 293 K, and by 14 % at 253 K. In the case of the wall impingement spray, maximum impingement spray spread distance was suppressed by the change in wall temperature, but the effect of the ambient temperature was also considered. |
