操作參數對柴油引擎性能、燃燒特性與廢氣排放之改善研究

Investigation of the Operation Parameters on Diesel Engine Performances, Combustion Characteristics and Exhaust Emission Improvement

潘俊皓(Jyun-Hao Pan)

指導教授 ： 吳澤松

崑山科技大學/工程學院/機械工程研究所/碩士(2012年)

https://doi.org/10.6828/KSU.2012.00100

摘要

本研究探討輔助氣體對柴油引擎性能提昇及汙染抑制之影響，實驗進行各種參數如富氧濃度、富氫濃度、富氫/氧混合氣體濃度、廢氣再循環率及引擎負載等條件，研究在引擎穩態條件，各種參數變化對引擎性能及汙染排放之影響，同時進行微粒(PM10及PM2.5)之採集試驗。
研究結果顯示:市售超級柴油摻配不同比例之氫氣、富氧、氫氧混合氣時其最高汽缸壓力皆低於市售超級柴油(SD)，超級柴油添加氫氣時最高汽缸壓力有提前的趨勢，在各轉速額定負載下導入廢氣再循環率(EGR)10%具有最佳燃燒壓力改善效果。制動燃油能量消耗比方面: 1500rpm 100N-m EGR0%富氧柴油有最佳的改善率，約比SD減少3.54%。NOx排放方面:氫氣導入越多時會有下降的趨勢，其中以EGR20%配合氫氣預混合比6%有最佳改善率，約比SD減少47.13%，在黑煙排放方面:EGR0%時，氫氧柴油有較佳改善效果，其排放值低於SD約21.43%-50%，在微粒排放方面:加入氧氣4%改善效果最好，其PM10改善值約可比SD減少78.94%，PM2.5改善值約可比SD減少78.66%。產氫機在1500rpm 100Nm及2100rpm 100Nm時導入渦輪後端有最佳的bsec表現與SD相比最高可改善0.53%及1.63%。

關鍵字

富氫氣體 ； 富氧氣體 ； 富氫/氧混合氣體 ； 廢氣再循環

並列摘要

The effects of auxiliary gas on diesel engine performance and pollution improvement were investigated. Experimental were conducted on various oxygen-rich gas, hydrogen-rich gas, hydrogen / oxygen rich gas mixture, exhaust gas recirculation rate and variety engine load conditions. The engine performances and emissions were measured under steady state conditions and the particulate matter(PM) PM10 and PM2.5 were also tests.
The experimental results showed that the maximum combustion pressure of fossil super diesel(SD) blending different proportions of hydrogen, oxygen, hydrogen/oxygen mixed gas were lower than SD. The trend of maximum combustion pressure would be advanced for hydrogen-rich fuel and import EGR10% would improve the combustion pressure. The brake specific enegy consumption testing result showed that at 1500rpm 100N-m EGR0%, oxygen-rich fuel had about 3.54% fuel economic than SD fuel. For NOx emissions tests, hydrogen-rich fuel would reduce NOx emissions. Hydrogen-rich with 6% and EGR20% intake air would have about 47.13% NOX reduction than SD fuel. In terms of smoke emissions: when EGR0%, hydrogen/oxygen mixed Gas diesel has the good improvement effect, its emissions value is lower than SD approximately 21.43%-50%. In terms of particulate emissions of oxygen-rich 4% the PM10 and PM2.5 had maximum reduction benefit about 78.94% and 78.66% than SD fuel results. Hydrogen Generators when 1500rpm 100Nm and 2100rpm 100Nm inducts behind the turbine wheel to have the best bsec performance with SD compares highest may improve 0.53% and 1.63%.

並列關鍵字

Hydrogen Rich Gas ； Oxygen Rich Gas ； Hydrogen/Oxygen Rich Gas ； Exhaus Gas Recirculation System

參考文獻

27.吳基隆，”船用柴油引擎氮氧化物（NOx）排放減量技術簡介（上）”，2001。

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