廢食用油甲酯即是眾所周知的許多生質柴油中的一種,其主要來源是以可食用的各種動植物油經油炸利用後被丟棄的油,經轉酯化反應後製造出來以做為取代高級柴油使用在柴油引擎上,因它無毒性、生物可分解性和可再生的優點,故被廣泛使用。本研究將未經轉酯化反應的廢食用油添加去漬油、廢食用油甲酯和高級柴油三種燃料使用於直噴式柴油引擎上,經引擎性能、油耗、廢氣排放、排氣溫度與燃燒特性實驗結果得知,廢食用油甲酯及廢食用油添加去漬油燃料較高級柴油燃料煙度上明顯的降低,又HC濃度也減低,但在NOx濃度上,廢食用油甲酯燃料比高級柴油燃料高,而廢食用油添加去漬油燃料反比高級柴油燃料低,另在油耗上兩者均比高級柴油燃料增加,在排氣溫度上,廢食用油甲酯燃料較高級柴油燃料低,廢食用油添加去漬油燃料較高級柴油燃料高。
Waste fried oil methyl ester (WOME), a kind of biodiesel, is made of variable eatable animal fats and vegetable oil which are the waste fried oil. Moreover, through the transesterification, it has alternated premium diesel in diesel engines because of the advantages of non-toxin, biodegradable, and renewable. The research analyzed the experiments of non-transesterification of waste fried oil adding naphtha, WOME, and premium diesel are individually used to the DI Diesel Engines. Through the experiments of the engine performance, fuel consumption, exhaust gas emission, exhaust gas temperature, and combustion characteristics to realize that the emission concentration of Smoke and HC of WOME and waste fried oil adding naphtha are lower than the premium diesel. The emission concentration of NOx of WOME is higher than the premium diesel; however, the waste of fried oil adding naphtha is lower than the premium diesel. In addition, the fuel consumption is higher than the premium diesel. For the exhaust gas temperature, WOME is lower than the premium diesel, but the waste fried oil adding naphtha is higher than premium diesel.