研究生: |
呂學儒 Xue-Ru Lu |
---|---|
論文名稱: |
汽油均質進氣壓燃於增程發電引擎之實現 Realization of Gasoline HCCI on a Range Extender Genset |
指導教授: |
姜嘉瑞
Chia-Jui Chiang |
口試委員: |
呂百修
Pai-Hsiu Lu 吳浴沂 Yuh-Yih Wu 陳亮光 Liang-kuang Chen |
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: | 2013 |
畢業學年度: | 101 |
語文別: | 中文 |
論文頁數: | 133 |
中文關鍵詞: | 汽油HCCI均質進氣壓燃引擎 、燃燒熱釋放 、燃燒時間點 、燃燒穩定性 、排氣背壓控制閥 |
外文關鍵詞: | Gasoline, Homogenous Charge Compression Ignition Engine (H, Back Throttle |
相關次數: | 點閱:318 下載:11 |
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均質進氣壓燃引擎極有可能成為新一代的車輛動力或油電混合發電系統, 提供經濟、
高效率且低污染的動力來源, 均質進氣壓燃引擎有著如柴油引擎般的高效率及遠較汽油
引擎低之 NOX 排放。 然而, 由於均質進氣壓燃引擎點火時間無法直接進行控制, 不如
一般汽油引擎及柴油引擎, 其點火時間可透過火星塞跳火時間及噴油時間來決定, 均質
進氣壓燃引擎之點火條件, 完全依靠汽缸內油氣混合物達到自燃的狀態來產生, 因此控
制均質進氣壓燃引擎之自燃時間點便成為了主要研究課題。
本研究採用華擎機械工業股份有限公司所開發之500c.c 單缸引擎, 於引擎本體加裝
進氣加熱系統及排氣背壓控制閥 (Back Throttle) 和所有必要之量測系統, 包含進氣流
量、 進、 排氣管內溫度及壓力、 噴油量、 曲軸角度和透過缸內壓力量測值估測燃燒時間
點 ( CA10、 CA50、 CA90等)。 研究著重於實作方面來進行, 使用92無鉛汽油於進氣加
熱狀態下, 固定噴油量改變進氣溫度; 固定進氣溫度, 調整排氣背壓閥 (Back Throttle)
開度, 透過排氣背壓閥控制燃燒完畢的廢氣殘留於汽缸內部之比例, 進而改變燃燒時間
點; 利用調整節氣門及排氣背壓閥開度之方式, 降低進氣加熱溫度, 使引擎能於較符合
實車運作狀況下進行 HCCI 模式運轉。 所有實驗數據將被用來分析燃燒穩定性及引擎
效率, 尋找 HCCI 的適當操作點。
關鍵字 : 汽油 HCCI 均質進氣壓燃引擎、 燃燒熱釋放、 燃燒時間點、 燃燒穩定性、 排氣
背壓控制閥 (Back Throttle)
Homogeneous Charge Compression Ignition (HCCI) engines provide a possible
solution for affordable, efficient and clean-burning power sources for either sta-
tionary power generator or advanced vehicles. The auto-ignition timing of HCCI
combustion is determined by the cylinder charge conditions, rather than the spark
timing or the fuel injection timing that are used to initiate combustion in SI and
CI engines, respectively. Though the auto-ignition timing control of HCCI com-
bustion becomes the most important assignment.
A single-cylinder 500 c.c.
engine developed by China Engine Corporation
(CEC) is augmented with an back throttle valve system to facilitate the con-
trol development of HCCI combustion. Realtime estimation of heat release rate
and combustion timings is obtained from the cylinder pressure measurement in
the MATLAB xPC-target environment. The main objective is to anaylze the com-
bustion timing of the fuel burned (CA10、CA50、CA90) and standard deviation of
combustion.
Research focuses on the implementation aspects, with the use of gasoline at the
different inlet temperature and fixed injection quantity ; Fixed intake temperature,
adjust the back throttle valve ratio to change amount of burned gas remaining in
the cylinder; By adjusting the throttle valve and the back throttle valve to reduce
the intake heating temperature, then the HCCI combustion engine can operate on
a actual vehicle under a normal condition. All experimental data will be used to
analyze the combustion stability, engine efficiency and finding a suitable operating
point.
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