超声波雾化乙醇替代柴油对涡流室式柴油机性能的影响  

Effect of ultrasonic atomization of ethanol as a substitute of diesel in swirl chamber diesel engine

作　　者：罗阔[1] 罗霞[1] 吴伟斌[1] 陈红[2] 支磊[1] 

机构地区：[1]华南农业大学工程学院/南方农业机械与装备关键技术教育部重点实验室,广州510642 [2]广州现代信息工程职业技术学院,广州510633

出　　处：《华中农业大学学报》2014年第4期137-140,共4页Journal of Huazhong Agricultural University

基　　金：国家星火计划项目(2011GA780037);广东省科技计划项目(2010A020507001-144);广州市科技计划项目(2012J2200069)

摘　　要：利用超声波雾化原理,设计了超声波雾化系统,并在涡流室式柴油机上进行进气道供雾化乙醇的试验。试验乙醇供给量为标定供油量的20%,改变柴油供给量进行负荷调整,并测试标定转速下不同负荷的发动机燃油消耗量和排放性能。测试结果表明:设计的超声波乙醇雾化系统,能够满足进气道供乙醇的性能要求,使柴油机燃用乙醇/柴油双燃料过程中表现出稳定的工作性能;氮氧化物(NOx)、一氧化碳(CO)和碳烟排放比原机低,尤其满负荷时碳烟降幅可达60%;能量消耗量率与原机基本相当,碳氢化合物(HC)排放比原机高。An ultrasonic atomization system was designed by using the ultrasonic atomization princi- ple to study atomized ethanol and it was tested through the inlet in a small swirl chamber diesel engine to find the effect of ultrasonic atomization ethanol in substituting for diesel fuel in diesel engine. During the test, the ethanol supply was calibrated to be 20% of the oil, the amount of diesel fuel supply was changed for load adjustment, and the fuel consumption and emissions performance of the engine were tested under different load with standard rotation speed. The results show that the diesel engine fueled with ethanol/diesel dual-fuel shows stable performance in the work. NOx, CO and soot emissions are lower than the original engine supplied with diesel fuel alone, especially at full capacity with a reduction up to 60% of soot. The energy consumption rate is roughly equal to the original engine, while HC emissions are higher than those of the original engine.

关 键 词：超声波雾化 乙醇 涡流室 柴油机 性能 

分 类 号：S219.031[农业科学—农业机械化工程] TK421[农业科学—农业工程]