Automotive hydrocarbon adsorber system
    2.
    发明公开
    Automotive hydrocarbon adsorber system 失效
    Kohlenwasserstoff-AdsorptionssystemfürKraftfahrzeug

    公开(公告)号:EP0821146A2

    公开(公告)日:1998-01-28

    申请号:EP97110642.2

    申请日:1997-06-30

    IPC分类号: F01N3/08 F01N3/28

    摘要: An improved system for the control of combustion engine exhaust from a motor vehicle includes an adsorber (16) for the adsorption of hydrocarbons concentrated in the exhaust stream at engine startup, the adsorber (16) being of honeycomb shape which includes a peripheral channeled portion and a central channeled portion, the latter including an exhaust gas by-pass port (20) parallel with the channels (18), with the through-channels in the central portion of the honeycomb having a relatively high resistance to exhaust gas flow compared to the channels traversing the peripheral portion. Systems with reduced secondary air requirements and providing more efficient burn-off of the adsorbed hydrocarbons are also disclosed.

    摘要翻译: 用于控制来自机动车辆的内燃机排气的改进的系统包括用于吸收在发动机启动时集中在排气流中的烃的吸附器(16),所述吸附器(16)具有蜂窝形状,其包括周边通道部分和 中心通道部分,后者包括与通道(18)平行的排气旁通端口(20),蜂窝状体的中心部分中的通道与废气流相比具有相对高的耐气体流动性 穿过周边部分的通道。 还公开了具有降低的二次空气需求并且提供更有效燃烧所吸附的烃的系统。