甲醇-汽油混合燃料对汽油机性能影响的试验研究  

Experimental Research on the Effects of Methanol-gasoline Blend on EFI Engine Performances

作　　者：张勇[1] 李红松[1] 刘驿闻[1] 屈翔[1] 

机构地区：[1]重庆工学院重庆汽车学院,重庆400050

出　　处：《小型内燃机与摩托车》2007年第4期21-23,共3页Small Internal Combustion Engine and Motorcycle

摘　　要：在一台多点电喷汽油机上,开展了燃用不同掺混比的甲醇-汽油混合燃料时发动机的经济性、排放特性研究。结果表明:电喷汽油机燃用低掺混比甲醇-汽油(小于30%)时,随着甲醇掺混比的增加,经济性有所改善,有效热效率明显提高;CO的排放有明显改善,中低负荷时HC排放有所改善,高负荷时HC排放增加,NOx排放相当,而怠速工况时,排放特性变差。An EFI gasoline engine was used to investigate its economical efficiency and emissions characteristics when fueled with methanol-gasoline fuel blends. The results shows that the engine economical efficiency improves slightly while its thermal efficiency increases with the increase of methanol proportion （0% , 10% , 15% ,20% ） in the fuel blends, compared with gasoline operation. The engine CO emissions is decreased dra- matically under all operating conditions, however, HC emissions decrease at low load and increase at high load. And NOx emission changes few. The exhaust emission characteristics of an engine at idle speed using methanol-gasoline blends are worse than that of gasoline operation.

关 键 词：电喷汽油机 甲醇 经济性 排放特性 

分 类 号：TK464[动力工程及工程热物理—动力机械及工程]