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  • 學位論文

改善生質柴油的流動點對直噴式柴油引擎性能影響之研究

The Study on the Effect of Improving Pour Point of Bio-Diesel on a DI Diesel Engine Performance

指導教授 : 林百福
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摘要


生質柴油中含有石化柴油所沒有的不良油品性質,除酸價高、有機化合物多和氧化穩定性低外,又流動點也高等,其中流動點過高將引起生質柴油在低溫時易結晶,致流動性差導致柴油引擎冷起動困難,而流動點過高也無法通過國家的使用標準。故本研究是使用流動點甚低的生質酒精作為飽和鍵較少的廢食用油甲酯與飽和鍵較多的棕櫚油甲酯生質柴油的添加劑,以提升其油品在低溫時的特性,由於生質酒精的油品特性與生質柴油不同,故添加在生質柴油中必將對柴油引擎性能有一定程度的影響。因此,從引擎性能實驗結果中得知,在兩種生質柴油中添加10 %的生質酒精,均對柴油引擎的馬力無直接的影響,又有減低煙度和EGT值的作用,但對燃料消耗率和廢氣排放中的HC與NOX濃度有增加之趨勢。

並列摘要


Biodiesel has the harmful fuel characteristics while fossil diesel doesn’t have, including high acid value, too much organic compounds, low oxidation stability, and high pour point etc. Especially in high pour point, over high pour point causes biodiesel into crystal easily at low temperature. Thus poor liquidity makes diesel engine difficult to cold start. And over high pour point is not able to pass Nation’s Use Standard. Thus, for enhancing the fuel characteristics of biodiesel in low temperature, this study was operated with extremely low pour point of ethanol as the additives between waste oil methyl ester which has fewer saturated bonds, and palm oil methyl ester which has more saturated bonds. Because the fuel characteristics of ethanol are different from biodiesel, diesel engine performance must be influenced by blended with. Therefore, engine performance experiments indicated that blending with 10 % ethanol in those two biodiesels has no strong influence on engine performance and obtaining the decrease in smoke concentration and EGT. Nevertheless, BSFC, NOx and HC concentrations are in the increase trend.

參考文獻


而保健康」,生質能源應用與展望,2005。
[14]吳友平、林雅芬,「回收食用油轉製生質柴油之燃燒特性分
[15]顏子傑,廢食用油甲酯使用在直噴式柴油引擎之研究,碩士論
[17]金偉豪,棕櫚油甲酯使用在直噴式柴油引擎之研究,碩士論
Discussion, March 2003.

被引用紀錄


葉信甫(2010)。以生質柴油提升重質柴油之引擎燃燒特性與暫態反應之研究〔碩士論文,崑山科技大學〕。華藝線上圖書館。https://doi.org/10.6828/KSU.2010.00094

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