| Summary: | 碩士 === 國立臺北科技大學 === 車輛工程系所 === 94 === 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.
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