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    • 5. 发明专利
    • Catalyst converter
    • 催化转化器
    • JP2014134179A
    • 2014-07-24
    • JP2013003712
    • 2013-01-11
    • Futaba Industrial Co Ltdフタバ産業株式会社
    • YAMAMOTO AKIRAITO SATOSHI
    • F01N3/28F01N13/08
    • F01N3/2839B01D53/94F01N3/2853F01N13/141F01N13/1827F01N2260/08
    • PROBLEM TO BE SOLVED: To provide a catalyst converter having a heat-retaining performance and a heat insulation performance while decreasing the probability of corrosion with a compact configuration.SOLUTION: A catalyst converter 10 includes: a catalyst carrier 12 for purifying exhaust gas from an internal combustion engine; and a catalyst storage pipe 11 storing the catalyst carrier 12. The catalyst storage pipe 11 includes: an inlet-side conical portion 11c provided with an exhaust gas inflow port 11a, and the inside diameter of which increases as a distance from the exhaust gas inflow port 11a becomes longer; a cylindrical portion 11d in which the catalyst carrier 12 is arranged; and an outlet-side conical portion 11e provided with an exhaust gas outflow port 11b, and the inside diameter of which increases as a distance from the exhaust gas outflow port 11b becomes longer. A conical inner pipe 14 having a diameter smaller than that of the inlet-side conical portion 11c is further provided inside the inlet-side conical portion 11c, and a double structure of the inlet-side conical portion 11c and the conical inner pipe 14 is formed in the upstream side of the catalyst carrier 12.
    • 要解决的问题:提供具有保温性能和隔热性能的催化剂转化器,同时以紧凑的构造降低腐蚀的概率。解决方案:催化剂转化器10包括:催化剂载体12,用于净化来自 内燃机; 以及存储催化剂载体12的催化剂储存管11.催化剂储存管11包括:入口侧锥形部11c,其设有排气流入口11a,其内径随着排气流入的距离而增加 端口11a变长; 其中布置有催化剂载体12的圆筒部11d; 以及设置有排气流出口11b的出口侧圆锥部11e,其内径随着与废气流出口11b的距离而增大。 另外,在入口侧圆锥部11c的内部还设置直径小于入口侧锥形部11c的圆锥形内管14,入口侧圆锥部11c和锥形内管14的双重结构为 形成在催化剂载体12的上游侧。