臺灣博碩士論文加值系統

為了符合歐洲五期(以下簡稱EURO V)重型柴油引擎污染排放標準限制，柴油引擎本身可以被最佳化以達成顆粒排放低與低油耗，這些針對引擎的改變導致NOx的高排放量，因為NOx與PM是成反比的關係。一個有效率的尿素添加Selective Catalytic Reduction(以下簡稱 SCR)後處理系統能將高NOx 排放降低甚至可以比EURO V 2.0g/kWh的汙染排放標準還低。本篇論文所有測試皆以優化後的2.5L高壓共軌柴油引擎搭配尿素添加SCR後處理系統。
本研究指出可能的SCR系統配置所需以因應未來不同階段的汙染排放法規。然而，優化後的柴油引擎搭配尿素添加SCR後處理系統是符合歐洲五期環保標準。

In order to meet the Euro V heavy-duty diesel emission standard legislation limits, a diesel engine can be optimized by internal means to give low particulate emission and lower fuel consumption. These modifications of the engine lead inevitably to higher NOx emissions due to the NOx/PM trade off. An efficient Urea SCR after-treatment system is then able to reduce the higher NOx emission to below the Euro V 2.0g/kWh legislation limit. This paper presents tests made on an optimized 2.5L high pressure common rail diesel engine together with a urea SCR after-treatment system.
This paper gives an overview of possible SCR system configurations that are required for different stages of future emission legislation. Thus, the optimized diesel engine combined with the urea SCR after-treatment system was compliant with the Euro V emission limits.

封面內頁
簽名頁
中文摘要...............................................................................................iii
ABSTRACT...........................................................................................iv
誌謝........................................................................................................v
目錄.......................................................................................................vi
圖目錄.................................................................................................viii
表目錄...................................................................................................ix
符號說明................................................................................................x
第一章 緒論.....................................................................................1
1.1前言...............................................................................1
1.2文獻回顧.......................................................................3
1.3柴油車輛多點噴射性能策略.......................................6
1.4柴油引擎NOx的減量反應..........................................7
1.5尿素水...........................................................................8
1.6系統架構與運作方式...................................................9
第二章 研究方法...........................................................................10
2.1實驗所用之引擎.........................................................10
2.2引擎動力計.................................................................12
2.3柴油引擎單噴與雙噴油耗汙染最佳化驗證.............13
2.4引擎測試方式.............................................................17
第三章 SCR系統驗證分析...........................................................22
3.1 SCR觸媒系統.............................................................22
3.2 SCR觸媒本體.............................................................25
3.3尿素水溶液.................................................................27
3.4 SCR溫度感測器.........................................................27
3.5 NOx感測器................................................................28
3.6 SCR觸媒系統驅動裝置.............................................29
3.7相關儀器.....................................................................32
3.7.1汽缸壓力計.......................................................32
3.7.2廢氣分析儀.......................................................33
3.8測試結果分析.............................................................34
第四章 結論與建議.......................................................................37
4.1結論.............................................................................37
4.2建議事項與未來研究項目.........................................38
參考文獻..............................................................................................39

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