SYSTEM AND METHOD FOR DETERMINING AN AGE OF AND CONTROLLING A SELECTIVE CATALYTIC REDUCTION CATALYST
    1.
    发明申请
    SYSTEM AND METHOD FOR DETERMINING AN AGE OF AND CONTROLLING A SELECTIVE CATALYTIC REDUCTION CATALYST 有权
    用于确定选择性催化还原催化剂的年龄和控制的系统和方法

    公开(公告)号:US20110314793A1

    公开(公告)日:2011-12-29

    申请号:US12825689

    申请日:2010-06-29

    摘要: An exhaust treatment system for exhaust gas produced by an engine includes a condition control module, a load determination module, and an age determination module. The condition control module decreases a load on a selective catalytic reduction (SCR) catalyst below a predetermined load threshold and increases exhaust gas temperature (EGT) to a predetermined temperature. The load determination module increases injection of a dosing agent into the exhaust gas and determines a load on the SCR catalyst when dosing agent is detected downstream from the SCR catalyst. The age determination module determines an age of the SCR catalyst based the determined load and predetermined loads for first and second SCR catalysts, respectively.

    摘要翻译: 由发动机产生的废气排气处理系统包括条件控制模块,负载确定模块和年龄确定模块。 条件控制模块将选择性催化还原(SCR)催化剂的负载降低到低于预定负载阈值并将废气温度(EGT)增加到预定温度。 当从SCR催化剂的下游检测到定量剂时,负载确定模块增加了将配量剂注入废气中并确定SCR催化剂上的负荷。 年龄确定模块分别基于确定的负载和第一和第二SCR催化剂的预定负载来确定SCR催化剂的年龄。