二閥單缸機車引擎的缸內直噴技術發展｜國立臺灣科技大學博碩士論文系統

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研究生：	邱彥凱 Yen-kai Chiu
論文名稱：	二閥單缸機車引擎的缸內直噴技術發展 Development of GDI Technology in a Two-Valve, Single-Cylinder Motorcycle Engine
指導教授：	黃榮芳 Rong-Fung Huang
口試委員:	趙振綱 Ching-Kong Chao 陳明志 Ming-Jyh Chern 孫珍理 Chen-Li Sun 林怡均 Yi-Jiun Lin
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：	2008
畢業學年度：	96
語文別：	中文
論文頁數：	217
中文關鍵詞：	燃油缸內直噴、噴油脈寬
外文關鍵詞：	gasoline direct injection, duration of fuel injection
相關次數：	點閱：121 下載：2
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本研究是將原廠二閥單缸四行程引擎之供油系統改裝為改裝為電子燃油噴射系統，供油方式則改為燃油缸內直噴(gasoline direct injection, GDI)，主要是分析噴油嘴於燃燒室之幾何位置配置與噴油正時(fuel injection timing)、噴油脈寬(duration of fuel injection)及點火正時(ignition timing)等物理參數對於缸內直噴引擎性能之影響，並藉由實驗結果比較修改幾何參數及物理參數前後，引擎性能輸出及污染物的排放，並探討其可行性。在本研究之中，吾人將缸內直噴引擎實驗分為兩個部份。第一部份為分析噴油嘴之物理特性，此部份是運用高速攝影機量測其開啟延遲及關閉延遲時間，作為修正噴油正時之參考；實驗結果顯示，不同噴油脈寬，其噴油嘴之噴油延遲時間均相同。第二部分主要為量測引擎性能，此部分是在燃燒室內，設計兩種不同型式之噴油嘴位置配置，並配合調校物理參數，比較其性能上之表現；實驗結果顯示，型式二較型式一之配置在性能上有較好的表現。

The objective of the study is that change Two-Valve, Single-Cylinder Motorcycle Engine into GDI Engine, and to mainly analyze the influences of geometric parameter and physical parameter in GDI Engine performance. In addition, you can compare the revised geometric parameter and revised physical parameter with the experimental results and find out the feasibility of excellent engine performance and the pollutant.
In this study, I divide the experiment into two segments. The first segment is to examine the characteristic of the fuel injector which using high speed camera to measure the time delay, and also it is the reference for fuel injection timing. The experimental result shows that the different duration of fuel injection has the same time delay. The two main points for the second segment are to examine the performance of the engine, and compare two types of the cylinder head’s performance. The experimental result of this is that one of them has better performance than the other.

摘要.............................................i
Abstract.........................................ii
致謝.............................................iii
目錄.............................................iv
符號索引.........................................vi
表圖索引.........................................viii
第一章 緒論......................................1
1 研究動機.........................................1
2 文獻回顧.........................................3
3 研究目的.........................................6
第二章 實驗設備、儀器與方法......................7
1 實驗架構.........................................7
2 實驗設備與儀器...................................7
2.1 引擎型式與規格........................................7
2.2 汽缸頭型式............................................8
2.3 動力計傳動系統........................................8
2.4 空氣流量量測設備......................................8
2.5 供油系統..............................................9
2.6 點火系統..............................................12
2.7 進氣歧管系統..........................................13
2.8 缸壓擷取系統..........................................13
2.9 廢氣分析系統..........................................14
3 引擎基本性能參數定義.............................14
3.1 活塞位移量及速率......................................14
3.2 容積效率..............................................15
3.3 流量係數..............................................16
3.4 空燃比................................................17
第三章 噴油嘴物理特性分析........................18
1 噴油嘴之噴油延遲特性.............................18
1.1 噴油訊號及延遲特性分析................................18
1.2 引擎轉速對噴油延遲時間特性分析........................25
2 噴油量...........................................25
3 量化分析.........................................25
4 供油壓力分析.....................................26
第四章 引擎性能測試..............................28
1 進氣歧管壓力.....................................28
2 容積效率.........................................29
3 無燃燒時之汽缸壓力...............................29
4 空燃比...........................................30
5 扭矩.............................................31
6 排放物...........................................33
第五章 結論與建議................................36
1 結論.............................................36
2 建議.............................................37
參考文獻.........................................39

                                

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