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    • 6. 发明授权
    • Multi-stage honeycomb heater
    • 多级蜂窝式加热器
    • US5465573A
    • 1995-11-14
    • US91917
    • 1993-07-16
    • Fumio AbeTadato ItoMasato Ogawa
    • Fumio AbeTadato ItoMasato Ogawa
    • F01N3/20F01N13/02B60L1/02
    • F01N3/2026F01N13/0097F01N2330/02Y02T10/26Y10S55/30
    • A multi-stage honeycomb heater includes: at least two honeycomb heaters electrically connected with each other and disposed along a stream of fluid; the two honeycomb heaters including furthest upstream honeycomb heater and a an adjacent honeycomb heater which is adjacent to and downstream of the furthest upstream honeycomb heater; each of the two honeycomb heaters having an electrically conductive honeycomb structure the honeycomb structure of the upstream honeycomb heater having slits for adjusting its electrical resistance and/or element for adjusting heat capacity of the honeycomb structure so that the ratio of applied power to heat capacity of the furthest upstream honeycomb heater is larger than the ratio of applied power to heat capacity of the adjacent honeycomb heater. Thus the upstream heater and the downstream heater can give similar temperature increases without a temperature distribution along a flow direction during the engine warm-up. A catalyst composition is coated on the partition walls of the honeycomb structure, and the light-off temperature of the catalyst composition of the upstream honeycomb heater is lower than that of the adjacent honeycomb heater.
    • 多级蜂窝式加热器包括:至少两个彼此电连接并沿着流体流布置的蜂窝式加热器; 包括最远的上游蜂窝式加热器的两个蜂窝式加热器和与最远的上游蜂窝式加热器相邻并且在其下游的相邻蜂窝式加热器; 两个蜂窝式加热器中的每一个具有导电蜂窝结构体,上游蜂窝式加热器的蜂窝结构体具有用于调节其电阻的狭缝和/或用于调节蜂窝结构体的热容量的元件,从而使得所施加的功率与热容量之比 最远的上游蜂窝式加热器大于相邻蜂窝式加热器的施加功率与热容量的比率。 因此,在发动机预热期间,上游加热器和下游加热器可以提供相似的温度升高而没有沿着流动方向的温度分布。 催化剂组合物涂布在蜂窝结构体的隔壁上,上游蜂窝式加热器的催化剂组合物的起燃温度低于相邻的蜂窝式加热器。