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    • 4. 发明申请
    • Exhaust Emission Control Catalyst and Exhaust Emission Control System
    • 废气排放控制催化剂和废气排放控制系统
    • US20090118121A1
    • 2009-05-07
    • US12294613
    • 2007-03-29
    • Susumu Sarai
    • Susumu Sarai
    • B01J32/00
    • B01D46/2474B01D46/0024B01D46/0041B01D46/2451B01D46/247B01D2279/30B01J23/42B01J35/0006B01J35/04B01J37/0225B01J37/0242F01N3/0222F01N3/035F01N3/2828F01N3/2892F01N13/0097F01N2330/30
    • PM is more securely restrained from adhering to and depositing on an exhaust gas inlet part of an exhaust emission control catalyst while avoiding disadvantages of lowering in purification performance and strength.A straight flow type exhaust emission control catalyst 20 disposed on an exhaust gas upstream side of an exhaust emission control system includes a plurality of straight cells 21 which extend in an axial direction thereof and through which exhaust gas flows, and straight cell partition walls 22 for partitioning the straight cells 21. The straight cell partition wall 21 has at an exhaust gas inlet-side end, an introduction promoting unit 60 for promoting the introduction of exhaust gas into each straight cell 21. The introduction promoting unit 60 includes a tilted opening 61 formed in an exhaust gas inlet part of each straight cell 21 so as to be tilted with respect to an axial direction, and a tilted end face 62 formed in an exhaust gas inlet-side end face of the straight cell partition wall 22 so as to be tilted with respect to the axial direction.
    • PM可以更加可靠地抑制排气排放控制催化剂的排气入口部分的附着和沉积,同时避免了净化性能和强度降低的缺点。 设置在废气排放控制系统的废气上游侧的直流式废气排放控制催化剂20包括沿其轴向延伸并排出废气的多个直槽21和用于 分隔直线电池21.直电池分隔壁21在废气入口侧端部具有用于促进将废气引入每个直电池21的引入促进单元60.引入促进单元60包括倾斜开口61 形成在每个直线电池21的排气入口部分中以相对于轴向方向倾斜;以及倾斜端面62,形成在直电池分隔壁22的排气入口侧端面中,从而 相对于轴向倾斜。