Numerical Analysis of Soot Emission from a Direct-injection Spark-ignition Gasoline Engine using a Compact-size Soot-formation Model
コンパクトな予測モデルを用いた直噴ガソリンエンジンの微粒子排出に関する数値解析
- Delivery
- Available on the other site
- Click here to order.
- Publication code
- 20214125
- Paper/Info type
- JSAE Transaction
Vol.52 No.2
- Pages
- 213-219(Total 7 p)
- Date of publication
- Mar 2021
- Publisher
- JSAE
- Language
- Japanese
Detailed Information
| Category(J) | 研究論文 Translation |
|---|---|
| Category(E) | ResearchPaper |
| Author(J) | 1) 渡邊 竜之介, 2) 橋本 淳, 3) 田上 公俊, 4) 金 尚明, 5) 窪山 達也, 6) 森吉 泰生, 7) 秋濱 一弘 |
| Author(E) | 1) Ryunosuke Watanabe, 2) Jun Hashimoto, 3) Kimitoshi Tanoue, 4) Sangmyeong Kim, 5) Tatsuya Kuboyama, 6) Yasuo Moriyoshi, 7) Kazuhiro Akihama |
| Affiliation(J) | 1) 大分大学大学院, 2) 大分大学, 3) 大分大学, 4) 千葉大学, 5) 千葉大学, 6) 千葉大学, 7) 日本大学 |
| Abstract(J) | 直噴ガソリンエンジンの始動条件において，燃料噴射時期と微粒子排出量の関係を調べた結果に対して数値計算を行い，モデルの評価を行う．すす生成モデルには，ガソリンサロゲート燃料に対して衝撃波管実験を用いて検証したコンパクトなモデルを用い，始動時特有のバスタブ特性について再現性の検討を行った． Translation |
| Abstract(E) | Direct-injection spark-ignition (DISI) engines have high thermal efficiency; however, they also show high soot emissions under cold-start conditions. It is also well-known that fuel-injection timing has a significant effect upon soot emissions, and that such emissions increase when fuel is injected during the early intake and latter compression strokes. In design calculations, it is important to reproduce this characteristic profile of soot emissions, what we call the bathtub-type profile. In this study, we performed numerical calculations of soot emissions from a DISI engine under cold-start conditions by using a compact-size soot-formation model previously proposed by authors. As results, it was shown that the proposed model reproduces the bathtub-type profile well. Furthermore, by changing the model of the HACA mechanism and adjusting the model coefficient, the quantitative reproducibility of soot emission was improved while maintaining the bathtub-type profile. |
