1、装用点燃式(Spark Ignition)蜂窝陶瓷(Honeycomb Ceramic)双床(Double bed)催化剂富燃(Rich Burning) 条件二次空气(Second Air)闭环控制(Close Looped Control)排气汽车电控单元 ECU氧传感器(Oxygen Sensor)三效催化剂(Three-way Catalysts, TWC)理论空燃比(Air Fuel Ratio, A/F)第一载体(substrate)第二载体(Supporter)歧管催化剂(Manifold mounted catalysts, MMC)紧耦合催化剂(Close coupled c
2、atalysts, CCC)前置催化剂(Close pre-coupled catalysts)非选择性催化还原(Non selective catalytic reduction, NSCR)选择性催化(Selective catalytic reduction, SCR)吸储还原(NO x Trapcatalytic reduction)催化分解(NO x Catalytic decomposition)稀燃（Lean Burning）孔密度 N = 1/L2 式中：N 为孔密度；L 为重复间距孔数 cpsi (cell per square inch)几何表面积(Geometric Surface Area), GSA = 4H( L-T) / (L2 H) = 4(L-T)/L2 式中：H 指蜂窝载体的长度开口率(Open Frontal Area), OFA= (L-T )2 H / (L2 H) = (L-T)2/L2闭口率(Closed Frontal Area), CFA=1-OFA = T (2L-T)/L2 水力直径 Dh= 4 OFA/GSA = L-T 表观体积热容 Cbd = Csr c = Cs r m (1-OFA)(1-P)压降负载量和质量比表面积晶型和晶粒尺寸孔结构贵金属 PM(Precious Metal)
