汽油机过量空气系数的参数特性试验研究  

Experimental Research on Excess Air Ratio′s Parameter Characteristics of Gasoline Engine

作　　者：李茂月[1] 徐雳[1] 贾冬开[1] 

机构地区：[1]哈尔滨理工大学机械动力工程学院,黑龙江哈尔滨150080

出　　处：《小型内燃机与摩托车》2010年第4期10-13,共4页Small Internal Combustion Engine and Motorcycle

摘　　要：为了充分发挥发动机的动力性和经济性,研究了定负荷和定转速下汽油机过量空气系数的进气和燃油消耗特性。研究发现,大中负荷及中高转速下过量空气系数与进气量、燃油消耗量间均呈抛物线关系;小负荷下过量空气系数与进气量、燃油消耗量间呈反比例关系。定转速时过量空气系数达到最大(小)值对应的进气管真空度远远高于定负荷下过量空气系数达到最大(小)值对应的进气管真空度。To make full use of the auto-power and economy,the characteristics of the air intake and fuel consumption for gasoline engine＇s excess air ratio have been studied which are in the fixed load and speed.The results found that the relationship between excess air ratio and the other two parameters including air intake quality and fuel consumption is parabolic for high and medium loads.However for small loads,they are inversely proportional.On the other hand,manifold vacuum at fixed speeds is much higher than that in the fixed load for maximum excess air ratio.

关 键 词：过量空气系数 进气 燃油消耗 台架试验 

分 类 号：TK411.12[动力工程及工程热物理—动力机械及工程]