本文以一具1.5升汽油缸內直噴渦輪增壓引擎為實驗目標引擎，針對特定運轉區間進行原引擎測試，接著分別調整三項不同的引擎控制參數以進行引擎制動燃油消耗率最佳化實驗，包含點火正時、可變汽門正時、渦輪洩壓閥開度，以得到各自制動燃油消耗率圖與制動污染排放量圖。接著透過MATLAB/Simulink建立整車動態模型，依據特定之行車型態，計算整車行駛所需要的燃油消耗與產生的廢氣排放，並利用各個引擎控制參數進行最佳化策略設計，本文建立一包含制動燃油消耗率及制動污染排放量的成本函數，並針對不同引擎運轉區間進行原引擎設定與三項引擎控制參數設定的成本函數計算，以成本函數值最小的設定做為該區間的局部最佳化策略，再由這些局部最佳化策略組合得到全域最佳化策略。並探討原引擎、各引擎控制參數及最佳化策略後的燃油經濟性差異，同時也分析整車的污染排放狀況。模擬結果顯示，原引擎經各項引擎控制參數調整後，燃油經濟性均有改善。透過最佳化策略調整後，燃油經濟性有更多改善量18.5%，CO及HC之排放量都有減少，而NOx排放量與原引擎相同。

A 1.5-liter gasoline direct-injection turbocharged engine is used as the target engine for experiment in this thesis. The original engine is tested for a specific operating range, and then three different engine control parameters including ignition timing, variable valve timing, and wastegate opening are optimized to minimize brake specific fuel consumption. Corresponding maps of brake specific fuel consumption and brake specific emissions can be obtained from the experiment. A vehicle dynamics model established in MATLAB/Simulink is used to calculate the fuel consumption and emissions for a specific driving cycle. An optimal strategy is designed using three different engine control parameters. A cost function is formulated to include brake specific fuel consumption and brake specific emissions in this thesis. The cost functions using the original engine and three control parameters are calculated for different engine operating regions. For a specific local region, the setting of the cost function with the minimum value is employed as the local optimal strategy. A global optimal strategy can then be obtained by combining these local optimal strategies. The fuel economy differences of the original engine, three control parameters and the optimal strategy are discussed. The emissions of these strategies are also analyzed. Simulation results show that the fuel economy of the original engine has been improved after the adjustment of three engine control parameters. The optimal strategy achieves the most significant improvement by 18.5%. CO and HC emission are reduced while maintaining the same NOx emission.

摘 要 i
ABSTRACT ii
誌 謝 iv
目 錄 v
表目錄 vii
圖目錄 ix
第一章 緒論 1
1.1 研究背景與動機 1
1.2 文獻回顧 3
1.3 研究方法及目的 7
1.4 論文架構 7
第二章 系統動態模型 8
2.1 駕駛模型 8
2.2 引擎模型 9
2.3 傳動系統模型 10
2.4 縱向動態模型 12
第三章 引擎控制參數調校 15
3.1 原引擎參數 15
3.2 點火正時參數 21
3.3 可變汽門正時參數 25
3.4 渦輪洩壓閥開度參數 28
3.5 最佳化策略 31
第四章 結果與討論 35
4.1 模型驗證 35
4.2 燃油經濟性比較與分析 41
4.3 污染排放比較與分析 50
第五章 結論與未來展望 57
附錄A 系統模擬參數 59
參考文獻 60
符號彙整 63

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