对451辆国5轻型汽油耐久封样车辆的贵金属进行统计分析，比较部分车辆排放数据与贵金属关系。结果表明：目前国5轻型汽油车催化器多采用4种形式的载体单元分布模式，催化剂多采用Pd/Rh贵金属组合形式，贵金属总含量为5~162 g/ft3，使用Pd/Rh贵金属比例多在6：1至16：1的区间范围内。适当的贵金属含量和比例可以更有效的降低尾气排放。
The precious metals of 451 gasoline vehicles which finished the durable tests and followed the national emission standards V were analyzed, and the correlation between the emission data of some vehicles and precious metals was compared. The results showed that: so far the catalytic converters of gasoline vehicle followed the national emission standards V used four forms of carrier unit distribution pattern. The combination of Pd/Rh were used frequently. The total content of precious metals were 5~162 g/ft3. Pd/Rh proportion were 6:1 to 16:1. Appropriate precious metal content and proportion could be more effective to reduce emissions.
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