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研究生: 唐立彥
Tang, Li-Yen
論文名稱: 轉子引擎使用重級油燃料燃燒試驗與分析
Experimental Study of Using Heavy Grade Fuel on Rotary Engine Performance
指導教授: 賴維祥
Lai, Wei-Hsiang
學位類別: 碩士
Master
系所名稱: 工學院 - 航空太空工程學系
Department of Aeronautics & Astronautics
論文出版年: 2018
畢業學年度: 106
語文別: 中文
論文頁數: 68
中文關鍵詞: 轉子引擎重級油漩渦器
外文關鍵詞: Rotary Engine, Heavy Grade Fuel, Swirler
相關次數: 點閱:90下載:4
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  • 本研究主要目的為研究可用於UAV推進系統且改用重級油的轉子引擎之可行性,燃油擬選用分子量較大之JET A-1航空燃油。因JET A-1航空燃油為揮發性較無鉛汽油低的燃油,若使用壓燃點火,需要將轉子引擎的壓縮比提高數倍,故以不變更目前轉子引擎汽缸及點火方式的前提下,使用空氣漩渦器架設於轉子引擎進氣口,在空氣與燃油混合通過漩渦器時產生更大的紊流,使空氣與燃油的混合程度上升,藉此提高轉子引擎燃燒JET A-1航空燃油的可行性。
    本研究首先設計一推力測試平台,將轉子引擎帶槳測試模擬UAV推進狀況,然後撰寫LabVIEW程式擷取轉子引擎ECU數值資訊,作為監控轉子引擎運轉狀況及性能分析使用,以混合油料的方式進行引擎啟動試驗,提升JET A-1航空燃油的蒸氣壓,將JET A-1航空燃油分別預先以10%、30%、50%、70%的混合比率與98無鉛汽油調成混合油,此方式能使轉子引擎燃燒至30%航空重級油之混合油;接著設計一組符合轉子引擎進氣口之漩渦器裝設於進氣口位置,利用漩渦器增加燃油與空氣混合的效率,此方式能使轉子引擎在高達50%航空重級油之混合油下穩定燃燒,且油耗平均下降了4~8%。

    The aim of this research is to verify the feasibility of engine starting by mixing fuel of gasoline and JET A-1. The heavy grade oil, JET A-1, is expected to use in the future rather than the original gasoline for the rotary engine. However, the volatility and atomization of JET A-1 in constant pressure is much lower than the original gasoline. If the rotary engine is designed by a compression ignition process with the heavy grade oil (JET A-1), it needs much more higher compression ratio. The swirler is located on the air inlet of the rotary engine to increase the turbulence of the mixed air with fuel without changing the design of the original rotary engine.
    In this research, a test-stand is design to test the engine with the propeller which can measure the thrust by a load cell. LabVIEW program is also written to acquire the ECU dada during the operation of engine, and those data can further provide for the monitoring of engine operation and analysis for the engine performance. The gasoline is mixed with JET A-1 as 10%, 30%, 50%, 70% ratios to decrease the vapor pressure of gasoline gradually. The rotary engine can run at 30% the mixture fuel of JET A-1 in this method. And then, a swirler is designed for the air inlet position of the rotary engine. The swirler is used to increase the effect of the mixed air with fuel. The rotary engine can run up to 50% the mixture fuel of JET A-1 in this method.

    中文摘要 I 英文摘要 II 誌謝 V 目錄 VI 表目錄 IX 圖目錄 X 符號說明 XIII 第1章 緒論 1 1-1 前言 1 1-2 文獻回顧 5 1-3 研究動機與目標 10 第2章 系統規劃設計與實驗理論分析 12 2-1 系統設計概念 12 2-2 實驗設備 14 2-3 量測系統規劃與建立 15 2-3-1 LabVIEW軟體 16 2-3-2 溫度量測 21 2-3-3 轉速量測 22 2-4 推力平台設計與建立 24 2-4-1 荷重元與推力平台 24 2-4-2 螺旋槳動平衡試驗 26 2-5 燃油供給系統 28 2-5-1 供油泵浦 28 2-5-2 燃油流量控制系統 29 2-5-3 燃油流量量測系統 31 2-6 潤滑油供應系統 32 2-7 轉子引擎冷卻系統 34 2-8 燃油選用規劃 35 第3章 理論分析 39 3-1 轉子引擎理想熱循環原理 39 3-2 轉子引擎燃燒室設計分析 45 3-3 轉子凹槽設計分析 47 第4章 實驗設計流程與步驟 50 4-1 啟動前檢查 50 4-2 啟動程序 51 4-3 轉子引擎拉轉程序 52 4-4 關車程序 52 4-5 轉子引擎故障排除 53 第5章 結果與討論 54 5-1 轉子引擎使用98無鉛汽油之油耗比較與推力比較 54 5-2 轉子引擎使用10% JET A-1混合油之油耗比較與推力比較 56 5-3 轉子引擎使用30% JET A-1混合油之油耗比較與推力比較 58 5-4 轉子引擎使用50% JET A-1混合油之油耗與推力 60 5-5 綜合比較 62 第6章 結論與未來展望 64 參考文獻 67

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