Exhaust gas purification system for internal combustion engine
    2.
    发明授权
    Exhaust gas purification system for internal combustion engine 有权
    内燃机排气净化系统

    公开(公告)号:US06860101B2

    公开(公告)日:2005-03-01

    申请号:US10266582

    申请日:2002-10-09

    IPC分类号: F01N3/08 F02D41/02 F01N3/00

    摘要: An exhaust gas purification system comprises a NOx catalyst for absorbing the NOx in the exhaust gas when the air-fuel ratio of the influent exhaust gas is lean and purifying by reducing the absorbed NOx with a reducing agent in the exhaust gas when the air-fuel ratio of the exhaust gas turns rich, a first unit for calculating the amount of NOx absorbed per unit time in each area of the NOx catalyst when the air-fuel ratio of the exhaust gas flowing into the NOx catalyst is lean, and a second unit for calculating the total amount of NOx absorbed into the NOx catalyst by totaling the amounts of NOx calculated by the first calculation unit for the areas of the NOx catalyst.

    摘要翻译: 废气净化系统包括:NOx吸收剂,其用于吸收废气中的NOx,当排出的废气的空燃比为稀的时,通过在空气燃料中排气中的还原剂还原吸收的NOx, 排气的比例变浓,当流入NOx催化剂的废气的空燃比变稀时,用于计算NOx催化剂的每个区域中每单位时间吸收的NOx的量的第一单元,以及第二单元 用于计算通过对由NOx催化剂的面积计算出的由第一计算单元计算的NOx的量来计算吸收到NOx催化剂中的NOx的总量。