Evaluation of Base-Fuel Dependence on Ignition-Suppression Effect of ETBE Using a High-Pressure Shock Tube
高圧衝撃波管による ETBE 着火抑制作用のベース燃料依存性評価
- Delivery
- Available on the other site
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- Publication code
- 20264614
- Paper/Info type
- JSAE Transaction
Vol.57 No.5
- Pages
- 947-953(Total 7 p)
- Date of publication
- Sep 2026
- Publisher
- JSAE
- Language
- Japanese
Detailed Information
| Category(J) | 論文 Translation |
|---|---|
| Category(E) | Paper |
| Author(J) | 1) 里川 健, 2) 浜崎 智大, 3) 岡村 怜奈, 4) 三好 明, 5) 高橋 和夫 |
| Author(E) | 1) Ken Satokawa, 2) Tomohiro Hamasaki, 3) Reina Okamura, 4) Akira Miyoshi, 5) Kazuo Takahashi |
| Affiliation(J) | 1) 上智大学大学院, 2) 上智大学大学院, 3) 上智大学大学院, 4) 広島大学大学院, 5) 上智大学 |
| Abstract(J) | カーボンニュートラル社会の実現に向け，日本ではバイオ燃料の段階的な導入が検討されている．我々はこれまでにエタノールによる着火抑制作用に着目し，そのベース燃料依存性を明らかにした．本研究では，高圧衝撃波管を用いた着火遅れ計測によりETBEとベース燃料との相互作用を評価し，エタノールとの比較検討を行った． Translation |
| Abstract(E) | In order to chemically investigate the base-fuel dependence of the ignition suppression caused by ETBE addition, shock-tube experiments and numerical simulations based on detailed reaction model were performed. Measurements of ignition delay times showed that the ignition suppression effect of ETBE was less dependent on base-fuel components, such as paraffins, olefins, and aromatics, in contrast to that of ethanol. Reaction simulations demonstrated that this weak base-fuel dependence was caused by differences both in the dominant chain carriers and in their generation timing. In the ETBE-added systems, the contribution of hydroperoxyl radicals (HO2) is relatively small, because highly reactive hydroxyl radicals (OH) also participate in chain reactions. This reduces the base-fuel dependence of the ignition suppression effect in the ETBE-added systems. Furthermore, in ETBE-added systems, the formation of chain carriers takes longer than in ethanol-added systems, resulting in a shorter reaction time between the ETBE-derived chain carriers and the hydrocarbons in the base-fuel. These two factors contribute to the weak base-fuel dependence of the ignition suppression when ETBE is added. |
