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研究生：	陳盈全 Chen, Ying-cyuan
論文名稱：	部分均質進氣法應用於密閉式柴油引擎之排氣污染研究 A Study on The Exhaunt Emissions of a Closed Cycle Diesel Engine using The Partial Homogeneous Charge Method
指導教授：	吳鴻文 Wu, Hong-wen
學位類別：	碩士 Master
系所名稱：	工學院 - 系統及船舶機電工程學系 Department of Systems and Naval Mechatronic Engineering
論文出版年：	2009
畢業學年度：	97
語文別：	中文
論文頁數：	105
中文關鍵詞：	密閉式循環柴油引擎系統、燃燒性能、實驗分析、均質壓燃式引擎
外文關鍵詞：	homogeneous charge compression ignition, close cycle diesel engine, experimental analysis, combustion performance
相關次數：	點閱：70 下載：1
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為了環保需求以及面對能源危機，進行能源系統的改良工作刻不容緩。柴油引擎乃是提供多數陸上以及海上動力的來源。如果將排放廢氣中的二氧化碳濃度降低，柴油引擎就可以形成一個密閉循環系統(CCDE)。均質壓燃方式(HCCI)可以提高直噴式柴油引擎的熱效率與降低污染物的生成。如果將HCCI和CCDE兩大系統結合，利用HCCI方式能夠降低污染物的特性，來提升CCDE系統的運轉壽命。
本文針對KUBOTA RK-125 型之單缸直噴式柴油引擎進行實驗，利用不同的實驗參數，進行不同預混合比之進氣對均質壓燃式柴油引擎燃燒性能分析。在不同的預混合氣體及組成分率下，量測氣缸內的爆發壓力，以及排放的各項污染濃度，將實驗所得結果和數值模擬做比較。
本研究已成功的將密閉式柴油引擎之進氣過程導入汽油、甲醇與乙醇燃氣，並且進行穩定的引擎實驗。實驗和模擬的結果顯示添加輔助燃料於密閉式柴油引擎對於CO2、NOx和Smoke等排放污染能夠有效的抑制，在引擎性能也有提升作用。

In order to demand environment protection and face to energy crisis, the process of improving the energy system is urgent. Diesel engines can be generally applied to the power source for the vehicles on land and boats at sea. If we can reduce CO2 of the exhaust, a diesel engine can be a closed cycle system (CCDE). A homogeneous charge compression ignition (HCCI) method can enhance the thermal efficiency of a DI diesel engine and reduce the formulation of pollutant. If we apply a HCCI method to the CCDE system, we could use the characteristic of HCCI that can reduce pollutant so as to increase the life of CCDE system.
This article is aimed at the KUBOTA RK-125 which is a single cylinder direct injection diesel engine and conducts an experiment. We use different experimental parameters to analyze the combustion performance of a homogeneous charge compression ignition engine with different premixed ratios of intake premixed gas and its contents. The pressure in cylinder and exhaust emissions of the engine are measured at different composition fractions of intake premixed gas, and then the results between the experiment and simulation will be compared.
The research has already implemented the fuels of gasoline,methanol,and ethanol successfully in the intake process, and carries out a stable diesel engine experiment. Experimental and simulation results show that increasing the auxiliary fuel in a Closed Cycle Diesel Engine can reduce pollutant such as CO2、NOx and Smoke so as to promote engine performance.

摘要......................................................I
Abstract.................................................II
致謝....................................................III
目錄.....................................................IV
表目錄.................................................VIII
圖目錄...................................................IX
符號說明................................................XVI
第一章緒論................................................1
1-1 前言..................................................1
1-2 文獻回顧..............................................4
1-3 研究方向與貢獻.......................................12
第二章密閉式柴油引擎之機組化運轉性能分析之探討...........15
2-1活塞上死點（TDC）位置的決定...........................15
2-2 柴油引擎之燃燒過程...................................16
2-3 預混合燃氣之當量比計算...............................18
2-4 著火遲延對燃燒影響...................................19
2-5排氣污染物之探討......................................21
2-6系統穩態運轉分析......................................23
2-7濕式噴霧法應用於CCDE系統之探討........................24
第三章 數值方法及研究方法................................30
3-1 KIVA程式簡介.........................................30
3-2 格點系統.............................................32
3-2-1 網格點定義.........................................32
3-3 數值方法介紹.........................................33
3-4 研究方法.............................................34
3-4-1 KIVA-3V 電腦程式架構...............................35
3-4-2 KIVA-3V 主要參數設定...............................36
第四章 實驗設備和實驗步驟................................42
4-1-1 實驗設備...........................................42
4-1-2 實驗設備規格.......................................42
4-2 輔助燃油燃料特性比較.................................45
4-3 密閉式循環柴油引擎實驗各系統介紹.....................46
4-3-1 實驗引擎介紹.......................................46
4-3-2 排氣系統與氧氣供應系統介紹.........................46
4-3-3 冷卻系統介紹.......................................49
4-3-4 KOH噴灑系統介紹....................................50
4-3-5 汽水分離系統介紹...................................50
4-3-6 CCDE全程監測系統介紹...............................51
4-4密閉式循環柴油引擎實驗數值之量測......................51
4-4-1曲柄角之量測........................................51
4-4-2氣缸壓力之量測......................................52
4-4-3轉速、馬力輸出與負載之量測..........................52
4-4-4噴油壓力設定與量測..................................52
4-4-5 O2之量測...........................................53
4-4-6 碳煙（SMOKE）濃度之量測............................53
4-4-7 CO2 / CO / HC之量測................................54
4-4-8 NOX之量測..........................................54
4-4-9 制動耗油率(bsfc)之量測.............................54
4-5實驗步驟..............................................55
4-6實驗進行注意事項......................................56
第五章 結果與討論........................................73
5-1 穩態運轉下不同參數與引擎排氣污染物的關係.............74
5-1-1密閉系統下引擎排氣污染物Smoke的關係.................74
5-1-2密閉系統下引擎排氣污染物CO2的關係...................74
5-1-3密閉系統下引擎排氣污染物HC的關係....................75
5-1-4密閉系統下引擎排氣污染物CO的關係....................76
5-1-5密閉系統下引擎排氣污染物NOX的關係...................77
5-2穩態運轉下不同參數與引擎制動比燃油消耗率bsfc的關係....78
    5-3穩態運轉下不同參數與引擎汽缸壓力的關係............78
第六章 結論..............................................97
參考文獻.................................................98
自述....................................................105
                                    

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校內：2012-09-03公開
校外：2012-09-03公開

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