空燃比对稀土三元催化剂净化效率的影响  

The Effect of Different A/F Ratio on the Purification Efficiency of Rare-Earth Three-Way Catalysts

作　　者：吴良勤[1] 曲明辉[1] 张春润[1] 刘瑞林[1] 王秉利[1] 

机构地区：[1]军事交通学院汽车工程系,天津300161

出　　处：《内燃机工程》2001年第4期47-50,共4页Chinese Internal Combustion Engine Engineering

基　　金：国家九五科技攻关项目提供资助 (项目编号 96 -910 -0 3-0 4B)

摘　　要：在不同空燃比下 ,利用几种含有不同助催化剂的稀土催化净化器在汽油机台架上进行了一系列试验。试验发现 :空燃比对稀土三元催化剂在尾气中的CO、HC、NO和NOX 净化效率有着明显的影响 ,尤其在稀混合气时 ,稀土三元催化剂具有较高的催化效率。说明稀土三元催化剂可以用于稀薄燃烧系统。此外 。At different A/F ratio, using several kinds of rare-earth three-way catalysts with different aide-catalysts,a series bench tests were made. It was showed that A/F ratio had significant effects on the purification of exhaust emission , such as CO, HC, NO and NO X,the rare-earth three-way catalysts had higher purification efficiency especially with mixture gas in rare range, which showed that the rare-earth three-way catalysts could be used in the system of aerial combustion. The speed and load also had some effects on the purification efficiency.

关 键 词：空燃比 稀土三元催化剂 净化效率 汽车 尾气排放 

分 类 号：X734.201[环境科学与工程—环境工程]