农用柴油机燃用二甲醚/柴油混合燃料的性能  

Performance of dimethyl ether/diesel blended fuel used for farm diesel engine

作　　者：李跟宝[1] 周龙保[2] 

机构地区：[1]长安大学汽车学院,陕西西安710064 [2]西安交通大学能源与动力工程学院,陕西西安710049

出　　处：《长安大学学报（自然科学版）》2009年第2期94-97,共4页Journal of Chang’an University(Natural Science Edition)

基　　金：国家自然科学基金重点项目(50122166;50136040)

摘　　要：为了进一步探索二甲醚作为代用燃料在柴油机上的应用途径,开发了一种新型的燃料低压供给系统,可以使发动机燃用二甲醚/柴油混合燃料时,在全工况范围内消除燃油系统低压油路的气阻问题。试验结果表明:燃用二甲醚/柴油混合燃料时,发动机的经济性有所改善;与原机相比,碳烟下降约30%,NOx排放平均降低约36%。To further explore the application of dimethyl ether as an alternative fuel for diesel engines, the tests were carried out to determine the engine performance, combustion characteristics, and emission properties of a diesel engine fueled with dimethyl ether diesel blended fuel. A novel low-pressure fuel supply system was developed, which can eliminate the vapor block problem in the fuel system under all operating conditions of the engine. The results indicate that there is a significant improvement in engine performance compared to the one of diesel engines, such as a lower fuel specific consumption rate, a decrease of soot emissions around 30 %, and a mean reduction of NO, emissions about 36%. 9 figs, 9 refs.

关 键 词：汽车工程 发动机 二甲醚 排放 

分 类 号：U464.172[机械工程—车辆工程]