An Engine Parameters Sensitivity Analysis on Ducted Fuel Injection in Constant-Volume Vessel Using Numerical Modeling
- 提供方法
- 版元よりダウンロードリンクを連絡
- 形態
- 価格
- 一般価格(税込)：￥6,600 会員価格(税込)：￥5,280
- 文献・情報種別
- SAE Paper
No.2021-24-0015
- 掲載ページ
- 1-13(Total 13 p)
- 発行年月
- 2021年 9月
- 出版社
- SAE International
- 言語
- 英語
- イベント
- International Conference on Engines and Vehicles 2021
書誌事項
| 著者（英） | 1) Federico Millo, 2) Cristiano Segatori, 3) Andrea Piano, 4) Benedetta Peiretti Paradisi, 5) Andrea Bianco |
|---|---|
| 勤務先（英） | 1) Politecnico di Torino, 2) Politecnico di Torino, 3) Politecnico di Torino, 4) Politecnico di Torino, 5) Powertech Engineering SRL |
| 抄録（英） | The use of Ducted Fuel Injection (DFI) for attenuating soot formation throughout mixing-controlled diesel combustion has been demonstrated impressively effective both experimentally and numerically. However, the last research studies have highlighted the need for tailored engine calibration and duct geometry optimization for the full exploitation of the technology potential. Nevertheless, the research gap on the response of DFI combustion to the main engine operating parameters has still to be fully covered. Previous research analysis has been focused on numerical soot-targeted duct geometry optimization in constant-volume vessel conditions. Starting from the optimized duct design, the herein study aims to analyze the influence of several engine operating parameters (i.e. rail pressure, air density, oxygen concentration) on DFI combustion, having free spray results as a reference. Furthermore, the duct wall temperature influence is investigated in order to preliminary explore the needs in terms of duct thermal management. The impact of the above-mentioned parameters on combustion and emissions formation processes is assessed, highlighting the soot mitigation mechanisms enabled by DFI operation. The optimized duct design led to a strong soot reduction for most of the operating conditions tested, thus confirming the robustness of the proposed geometry. This preliminary understanding step via numerical simulation of DFI calibration requirements paves the way to future studies on duct-equipped engine applications. 翻訳 |
