研究生: |
洪嶙清 HONG-LIN-CHING |
---|---|
論文名稱: |
均質進氣壓燃引擎燃燒時間點之靈敏度分析 Sensitivity Analysis of the Combustion timings of Homogeneous Charge Compression Ignition Engine |
指導教授: |
姜嘉瑞
Chia-Jui (Ray) Chiang |
口試委員: |
蘇裕軒
Yu-Hsuan Su 吳浴沂 none 盧昭暉 Jau Huai Lu 呂百修 none |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 機械工程系 Department of Mechanical Engineering |
論文出版年: | 2016 |
畢業學年度: | 104 |
語文別: | 中文 |
論文頁數: | 118 |
中文關鍵詞: | 均質進氣壓燃 、靈敏度 、燃燒熱釋放 、燃燒時間點 |
外文關鍵詞: | Homogenous Charge Compression Ignition, Sensitivity, Heat Release, Combustion Timing |
相關次數: | 點閱:242 下載:2 |
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為了發展均質進氣壓燃(homogeneous charge compression ignition, HCCI)引擎之最佳化控制策略,我們以實驗數據及具曲軸角度解析度之引擎模型進行引擎燃燒時間之靈敏度分析。實驗使用華擎單缸500c.c.引擎,搭配進氣加熱系統及排氣背壓閥,再利用擷取系統來獲得所需的資料及參數。引擎模型在不同進氣溫度、空燃比(air-to-fuel ratios, AFR)及殘留氣體比率下與引擎實驗結果進行驗證。研究結果顯示,在較低的缸內溫度及空燃比下,燃燒時間點對缸內溫度靈敏度較高。另一方面,相較於缸內溫度來說,缸內氣體組成對燃燒時間點的影響是可以忽略的。
For the purpose of the optimal control development for a homogeneous charge compression ignition (HCCI) engine, sensitivity of the combustion timings is analyzed based on experiment data and a crank-angle-based model. The 500 c.c. single cylinder engine is equipped with an intake air heating system and an exhaust throttle. The physics-based model is first validated against the experiment data at various intake temperatures, air-to-fuel ratios (AFR) and residual gas fractions. The results show that the combustion timings are more sensitive to the in-cylinder temperature at valve closing (Tivc) in the operating condition when the intake temperature and AFR are lower. The impact from the in-cylinder gas composition, on the other hand, is negligible compared to the effect of the temperature.
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