运转参数对电喷汽油机怠速排放的影响  

Influence of Operating Parameters on Exhaust Emission of EFI Gasoline Engine at Idle Speed

作　　者：高照亮[1] 

机构地区：[1]浙江水利水电专科学校,浙江杭州310018

出　　处：《浙江水利水电专科学校学报》2009年第3期88-91,共4页Journal of Zhejiang Water Conservancy and Hydropower College

基　　金：浙江省教育厅科研基金资助项目(20070850)

摘　　要：试验表明,冷却液的温度、怠速转速、点火提前角、附属机构消耗的功率等运转参数对电喷汽油机的怠速排放有重要影响.具体表现为冷却液的温度越低,HC和CO的排放量越大;当怠速转速增加时,HC和CO的排放量明显降低;推迟点火提前角会使HC的排放量减小;怠速工况时NOx的排放量较少,但会随着附属机构消耗的功率而变化.The relationship between exhaust emission of EFI gasoline engine at idle speed and the operating parameters, such as coolant temperature, idle speed, spark advance angle and load, has been measured and analyzed in the essay. It shows that the lower coolant temperature is, the more HC and CO are discharged at idle speed. As the idle speed goes faster, the less HC and CO will be discharged, To put off Ignition Advance will decrease the discharge amount of HC. Under the circumstances of idle speed, the discharge amount of NOx is lower, but it will change depending on the change of the load.

关 键 词：电喷汽油机 怠速 排放 

分 类 号：TK441.5[动力工程及工程热物理—动力机械及工程]