进气道喷甲醇对柴油机性能及排放影响的研究  

Effects of Methanol Injection at Intake Port on Diesel Engine

作　　者：史伟奇[1] 王铁[1] 廖文蓉[1] 王丁丁[1] 汪恒[1] 邓永慧[1] 

机构地区：[1]太原理工大学车辆工程系,山西太原030024

出　　处：《小型内燃机与摩托车》2013年第3期67-71,76,共6页Small Internal Combustion Engine and Motorcycle

基　　金：山西省科技重大专项(20111101035)

摘　　要：在增压柴油机的进气道上加装甲醇喷射系统,研究不同甲醇喷射比例对柴油机性能和排放的影响。结果表明,用甲醇替代部分柴油,在外特性试验中,甲醇的喷入扩展了发动机扭矩和功率范围,最大升高幅值分别为12.1%和12.0%。同时,柴油的消耗率降低,最大降幅为22.6%,使用经济性有所改善,费用支出率最高降幅为15.2%,但高转速高负荷时费用支出率升高了4.4%。进气道喷甲醇有效抑制了NOx的排放,最高降幅达到84.5%,碳烟的排放升高。The experimental research was carried out on a turbocharged and inter-cooled diesel engine with a set of methanol -injection system designed on the intake port. The diesel performances and emissions with dif- ferent quantity of the inlet methanol sprayed are analyzed. The results show that the methanol injected extends the range of torque and power by 12.1% and 12.0% at the largest on outer performance. The specific diesel consumption is reduced by 22.6% at the largest ; The reality economy is improved and the expense is reduced by 15.2% at the largest but the expense is increased by 4.4% at the largest under high speed and high load; The methanol injection at intake port reduces the emission of NOx by 84.5%, but the PM emission is

关 键 词：柴油机 进气道 甲醇 发动机性能 排放 

分 类 号：TK427[动力工程及工程热物理—动力机械及工程]