【摘要】 三效催化器是控制摩托车尾气排放最有效的技术手段。而当前三效催化器中起主要作用的活性组分贵金属的价格持续升高，对行业下游特别是主机厂带来巨大的成本压力。优化催化器系统设计，减少贵金属用量是降低三效催化器成本的关键。基于一款100 mL排量国四踏板摩托车，在该车原催化器技术方案基础上，通过对催化器的系统设计，从贵金属配比、催化剂涂层配方和催化器载体结构选型等方面开展优化降本研究。实验结果表明通过优化方案可使得贵金属用量下降69%，同时催化剂新鲜态和耐久后排放性能满足国四排放要求且均优于原方案。更多还原

【Abstract】 Three-way catalytic converter is the most effective technology to control motorcycle exhaust emissions. However, the price of noble metal, the main active component in the three-way catalytic converter, continues to rise, which brings great cost pressure to the downstream industry. Optimizing the design of catalytic converter system and reducing the amount of precious metal is the key to reduce the cost of three catalytic converter. The work is based on a China Ⅳ 100cc pedal motorcycle, through the catalytic converter system design, including the precious metal ratio, catalyst coating formula and catalytic converter support structure selection and other aspects to optimize the cost reduction work. The experimental results show that the amount of noble metal can be reduced by 69% through the optimized scheme, and the fresh and aged catalysts meet the requirements of China-IV emission standard and are better than the original scheme.更多还原