在此研究中，我們利用定容燃燒室對傳統航空燃油Jet-A1和JP-5的煙灰生成進行了測量，並使用裝有兩個 ND8 濾鏡的高速 CCD 相機來捕捉燃燒過程中煙灰顆粒輻射的白熾光。研究重點是探討不同的環境溫度(723K-823K)、不同環境氧氣含量(15%、18%及21%)以及不同噴射壓力(300bar、600bar及900 bar)之煙灰生成情況。結果表明，隨著環境溫度及升高的情況下，會促進煙灰生成。較高的噴射壓力則會因為霧化效果的提升，使得燃料液滴與空氣混合的更加均勻，有助於減少煙灰生成量。在低溫燃燒的情況下，這由於環境氧氣濃度較低，需要更長的時間來完成環境氣體和燃料的混合，整體的燃燒過程持續時間拉長，燃燒反應速度明顯減慢，導致煙灰生成減少。Jet-A1和JP-5之間的化學組成成分對煙灰生成也有顯著影響，在相同工作條件下，Jet-A1因為芳香族含量較低的情況下，有著比JP-5更少的煙灰生成，這進一步證實了化學組成對於煙灰生成的重要性。這些發現有助於為未來的燃油改進和燃燒技術優化提供參考，從而達到更清潔和更高效的燃燒過程。

In this study, we measured soot formation in traditional aviation fuels Jet-A1 and JP-5 using a constant-volume combustion chamber, capturing incandescent radiation from soot particles with a high-speed CCD camera equipped with two ND8 filters. The focus was on examining soot formation under varying conditions: environmental temperatures (723K-823K), oxygen concentrations (15%, 18%, and 21%), and injection pressures (300 bar, 600 bar, and 900 bar). Results showed that higher temperatures promote soot formation, while higher injection pressures improve atomization, leading to better fuel-air mixing and reduced soot production. At lower temperatures and oxygen levels, longer mixing times are required, slowing down the combustion process and reducing soot. The chemical composition of the fuels significantly impacted soot formation; Jet-A1, with lower aromatic content, produced less soot than JP-5 under the same conditions. These findings provide valuable insights for future fuel improvements and combustion technology optimization, aiming for cleaner and more efficient combustion processes.

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