直噴式柴油引擎燃料噴射壓力對棕櫚油甲酯混合燃料影響之研究

The Study on the Effect of Fuel Injection Pressure in the DI Diesel Engine on the Blending Fuel of Palm Oil Methyl Ester (POME) with Premium Diesel

林忠進(Chung-Chin Liu)

指導教授 ： 林百福

國立臺北科技大學/機電學院/機電整合研究所/碩士(2006年)

摘要

高級柴油中添加20％棕櫚油甲酯的混合燃料(POME20)可較添加50％棕櫚油甲酯混合於高級柴油中的燃料(POME50)能維持與純高級柴油燃料相同的引擎性能外，同時在油耗及NOX濃度些微增加的情形下，又能有效的減低煙度及HC濃度的排放。另柴油引擎的燃料噴射壓力對引擎性能及廢氣排放亦有所影響，故本研究以不同的柴油引擎燃料噴射壓力來探討其對POME20混合燃料的影響。經實驗結果顯示，較原柴油引擎燃料噴射壓力(19.6MPa)低之噴射壓力(15.7MPa)，在不影響引擎馬力及扭力的條件下，能減低燃料消耗率4.5％、煙度17.12％及HC濃度4.19％，但NOX濃度增加12.42％，另較原柴油引擎燃料噴射壓力(19.6MPa)高之燃料噴射壓力(24.5MPa)，則會影響引擎性能，以及增加燃料消耗率1.99％、煙度23.02％和HC濃度19.42％，而NOX濃度減低10.42％。

關鍵字

棕櫚油甲酯與高級柴油的混合燃料 ； 直噴式柴油引擎燃料噴射壓力 ； 引擎性能 ； 油耗 ； 廢氣排放和燃燒特性

並列摘要

The blending fuel 20% POME with PD (POME20) as compared with the blending fuel of 50% POME with PD not only can reduce the concentration of Smoke and HC, except the slightly higher BSFC and the concentration of NOx, but also can maintain the engine performance as compared with using PD. In addition, the engine performance and exhaust gas emissions are also affected by the fuel-injection pressure of diesel engine. Thus, this study focused on using different fuel-injection pressure to investigate the effects on POME20.
Experimental results demonstrated that using lower fuel-injection pressure(15.7Mpa) than the one (19.6Mpa) in original diesel engine without influence on the engine performance and torque can decrease the BSFC 4.5％, the concentration of Smoke 17.12％, and the concentration of HC 4.19％, but the concentration of NOx is increased to 12.42％. In addition, higher fuel-injection pressure(24.5MPa) which is used in original diesel engine affects the engine performance and increases the BSFC 1.99％, the concentration of smoke 23.02％ and the concentration of HC 19.42％.Only the concentration of NOX is decreased to 10.42％.

並列關鍵字

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

參考文獻

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