臺灣博碩士論文加值系統

本文主要將氫氣與氮氣混和成為富氫氣體，並導入四行程化油器機車引擎，針對節氣門前端與後端氣體導入點，在控制不同富氫氣體體積百分比(100-30%)、富氫氣體體積流率(14-35L/min)、行車速度(40、60、80km/hr)等參數下，研究引擎性能及污染排放之影響。
以實驗測試結果得知，增加混合氣中氫氣含量可使引擎產生較高的性能，於車速80km/hr，氫氣體積百分比70%與流率28L/min時，有最佳制動馬力26%的提升，若持續增加氫氣含量，則將使混合氣濃度過濃而造成馬力降低，然而純氫氣體則較富氫氣體有更佳的效果。引擎排放CO及HC污染濃度隨富氫氣體供應率降低而減少，氫氣於低百分比與低流率時，有最佳7%的CO污染排放改善。混合氣中氫氣含量增加，使得引擎處於富油燃燒，造成引擎燃燒溫度降低與燃燒不完全的現象產生，因此NOX及CO2污染排放濃度有隨之降低的趨勢，分別在40km/hr與80km/hr時，氫氣於高百分比與高流率下，NOX有最佳92%的污染排放改善。

In this research, the hydrogen and nitrogen were mixed to hydrogen-rich gas. The 4-stroke carburetor motorcycle engine was used to evaluate the effect of hydrogen-rich gas on the performance and exhaust emissions. The effect of intake-gas positions, different hydrogen-rich gas volume ratio(100-30%), hydrogen-rich gas flow rate(14-35L/min) and speed (40、60、80km/hr) were investigated
The results of this research showed that:
Hydrogen-rich gas could make engine with higher performance. When speed at 80km/hr, hydrogen-rich gas volume ratio70% and flow rate 28L/min, it increased 26% of brake power. If raised hydrogen content, the mix-gas concentration would be over and power reduced. The hydrogen-rich gas had better performance than pure hydrogen gas. When hydrogen-rich rate gas reduced, the CO and HC engine exhaust emissions were decreased. When hydrogen-rich gas is at low ratio and low flow ratio, it has the 7% CO emissions improved. The increasing of hydrogen content on mix-gas will make engine with rich-gasoline combustion, then the engine combustion temperature will low and with incompletion combustion. So NOX and CO2 exhaust emissions concentration will get lower. When motorcycle with high ratio and high flow rate hydrogen-rich gas at 40km/hr, 80km/hr, NOX have the improvement of 92% exhaust emissions.

目錄
中文摘要 I
英文摘要 II
誌謝 IV
目錄 V
表目錄 VIII
圖目錄 IX
第一章 緒論 1
1.1 前言 1
1.2 研究動機 2
1.3 研究面臨的問題 4
1.4 研究目的 4
第二章 文獻回顧 5
2.1 國內文獻 5
2.2 國外文獻 7
2.3引擎排放污染 10
2.3.1 一氧化碳(CO) 10
2.3.2 碳氫化合物(HC) 10
2.3.3 氮氧化物(NOX) 10
第三章 實驗設備與方法 12
3.1 實驗設備 12
3.2 實驗參數 29
3.2.1 控制參數 29
3.2.2 量測參數 31
3.4 實驗方法 32
第四章 結果與討論 35
4.1 引擎性能特性比較 35
4.1.1 制動馬力 35
4.1.2加速性能 39
4.1.3 燃油消耗 40
4.2 引擎污染排放比較 45
4.2.1 CO污染排放濃度 45
4.2.2 HC污染排放濃度 49
4.2.4 NOX污染排放濃度 58
4.3 氫氣對引擎性能之影響 62
4.3.1 氫氣對制動馬力之影響 62
4.3.2 氫氣對加速性能之影響 63
4.3.3 氫氣對燃油消耗之影響 64
4.4 氫氣對引擎污染排放之影響 66
4.4.1 富氫氣體對CO污染排放之影響 66
4.4.2 氫氣對HC污染排放之影響 68
4.4.3 氫氣對CO2污染排放之影響 70
4.4.4 氫氣對NOX污染排放之影響 72
第五章 結論 75
5.1 引擎性能分析 75
5.2 引擎污染排放分析 75
5.3 總結 77
5.4未來研究方向與建議 77
參考文獻 78

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