棕櫚油甲酯混合燃料應用於直噴式柴油引擎之研究

The Study on Applying Palm Oil Methyl Ester (POME) Blended Fuel in a Direct Injection Diesel Engine

陳明德(Ming-Te Chen)

指導教授 ： 林百福

國立臺北科技大學/機電學院/車輛工程系所/碩士(2006年)

摘要

棕櫚油的產量高，成本低適合做為生質燃料使用在柴油引擎。由於棕櫚油在常溫下其流動性差，如經甲醇酯化反應製成棕櫚油甲酯燃料後即可適用在常溫15℃以上的地區，如同國內夏秋季節中。又長期使用純棕櫚油甲酯後對柴油引擎的燃料及潤滑系統和引擎活塞環等有不良的影響。是故為改善棕櫚油甲酯燃料的流動性等缺點。本研究將棕櫚油甲酯燃料以不同比例添加在高級柴油燃料中，以探討其引擎性能、油耗和廢氣排放濃度等之比較。經實驗結果顯示，添加20％棕櫚油甲酯混和高級柴油的混合燃料(POME20)與添加50％棕櫚油甲酯混合高級柴油的混合燃料(POME50)，於引擎最高轉速之全負荷時引擎性能雖稍遜於純棕櫚油甲酯燃料，但其油耗和NOX濃度較優於純棕櫚油甲酯燃料，反之煙度和HC濃度稍遜。

關鍵字

棕櫚油甲酯之混合比例 ； 直噴式柴油引擎 ； 引擎性能 ； 油耗 ； 廢氣排放及燃燒特性

並列摘要

High productivity and low cost biodiesels for the palm oil is especially suitable for diesel engine. But the palm oil has the characteristics of bad fluidity in atmospheric temperature; it has to do the transesterification reaction to be palm oil methyl ester (POME). Therefore, it can be used in the region above 15℃, such as the seasons of summer and autumn in our country. The fuel system, lubrication system and the piston ring have been caused harmful affections in diesel engines for the long-term use of pure POME. In order to improve the poor fluidity of POME fuel, this study blends the different proportion of POME with premium diesel (PD) to investigate the effect on engine performance, brake specific fuel consumption (BSFC), exhaust gas emissions and combustion characteristics in diesel engines. Experimental results demonstrated that the blending fuel of 20% POME with PD (POME20) and the blending fuel of 50% POME with PD can effectively reduce BSFC and the concentration of NOx. However, the concentrations of smoke and HC have been slightly increased as compared with pure POME under full load condition at the highest engine speed.

並列關鍵字

Mixing Proportion of POME ； DI Diesel Engines ； Engine Performance ； Fuel Consumption ； Exhaust Gas Emission ； Combustion Characteristics

參考文獻

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