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    • 8. 发明授权
    • Catalytic converter, diesel engine and lean-burn engine having a catalytic converter
    • 具有催化转化器的催化转化器,柴油发动机和稀燃燃烧发动机
    • US06827909B1
    • 2004-12-07
    • US09711868
    • 2000-11-13
    • Rolf BrückJörg-Roman Konieczny
    • Rolf BrückJörg-Roman Konieczny
    • B01D5334
    • F01N3/2006F01N3/281F01N13/0093F01N2240/10F01N2260/08Y02T10/26
    • A catalytic converter for cleaning exhaust gas from an internal combustion engine, in particular a diesel engine or a lean-burn engine, includes at least one honeycomb body coated with catalytically active material and having passages through which the exhaust gas can flow, walls separating the passages from each other, and first and second zones disposed in succession in a flow direction. The first zone has a lower thermal capacity per unit of volume of the honeycomb body than the second zone and the second zone has a thermal capacity of at least 800 joules per liter and Kelvin [J/lK], preferably at least 900. Sheet metal layers in the first zone preferably have an average uncoated thickness of less than 0.06 mm, preferably less than 0.04 mm. Sheet metal layers in the second zone preferably have an average uncoated thickness of more than 0.06 mm, preferably more than 0.08 mm and in particular 0.11 mm. In that way, the first zone can rapidly reach its operating temperature at high exhaust gas temperatures while the second zone stores heat for operating conditions involving a low exhaust gas temperature.
    • 用于清洁来自内燃机,特别是柴油发动机或稀燃燃烧发动机的废气的催化转化器包括至少一个涂有催化活性材料的蜂窝体,并且具有排气可以流过的通道, 彼此之间的通道,以及沿流动方向相继布置的第一和第二区域。 第一区域具有比第二区域更小的蜂窝体单位体积的热容量,第二区域具有至少800焦耳/升的热容量和开尔文[J / lK],优选至少900.钣金 第一区域中的层优选具有小于0.06mm,优选小于0.04mm的平均未涂覆厚度。 第二区域中的钣金层优选具有大于0.06mm,优选大于0.08mm,特别是0.11mm的平均未涂覆厚度。 以这种方式,第一区域可以在高排气温度下快速达到其工作温度,而第二区域将热量存储在涉及低废气温度的操作条件下。