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    • 71. 发明申请
    • METHOD FOR VERIFYING THE AGING CONDITION OF A CATALYTIC CONVERTER ON BOARD A VEHICLE
    • 汽车车载催化转化器老化条件的方法
    • US20110056280A1
    • 2011-03-10
    • US12675341
    • 2008-08-29
    • Martin VotsmeierJuergen GieshoffThomas Kreuzer
    • Martin VotsmeierJuergen GieshoffThomas Kreuzer
    • G01M15/10
    • F01N11/002F01N11/005F01N2550/02Y02T10/47
    • The invention describes a method for determining the light-off temperature of a catalytic converter on board a vehicle. The aging condition of the catalytic converter is determined by means of the method. To test the catalytic converter, the latter is loaded for example with a CO/HC test pulse. During the combustion of the additional CO and HC on the catalytic converter, an axial temperature profile is generated. The position of the maximum of said temperature profile along the catalytic converter is dependent on the current light-off temperature. The temperature profile travels through the catalytic converter and can be measured at the outlet of the catalytic converter as a time-dependent profile. The original axial temperature profile can be inferred from the time-dependent profile. Using a calculation program, the current light-off temperature of the catalytic converter on the vehicle can be determined. The method has the advantage that the test can take place at exhaust-gas temperatures considerably higher than the light-off temperature. In this way, it is ensured that the test pulse does not lead to increased pollutant emissions.
    • 本发明描述了一种用于确定车辆上的催化转化器的关闭温度的方法。 通过该方法确定催化转化器的老化条件。 为了测试催化转化器,后者例如用CO / HC测试脉冲加载。 在催化转化器附加CO和HC的燃烧过程中,产生轴向温度分布。 沿着催化转化器的最大温度曲线的位置取决于当前的关闭温度。 温度曲线通过催化转化器,并且可以在催化转化器的出口处测量为时间依赖的曲线。 原始轴向温度曲线可以从时间依赖曲线推断。 使用计算程序,可以确定车辆上的催化转化器的当前关闭温度。 该方法具有的优点是,该测试可以在远低于起燃温度的废气温度下进行。 这样就可以确保测试脉冲不会导致污染物排放增加。
    • 72. 发明授权
    • Method for verifying the aging condition of a catalytic converter on board a vehicle
    • 用于验证车辆上的催化转化器的老化状况的方法
    • US08276438B2
    • 2012-10-02
    • US12675341
    • 2008-08-29
    • Martin VotsmeierJuergen GieshoffThomas Kreuzer
    • Martin VotsmeierJuergen GieshoffThomas Kreuzer
    • G01M15/10
    • F01N11/002F01N11/005F01N2550/02Y02T10/47
    • The invention describes a method for determining the light-off temperature of a catalytic converter on board a vehicle. The aging condition of the catalytic converter is determined by means of the method. To test the catalytic converter, the latter is loaded for example with a CO/HC test pulse. During the combustion of the additional CO and HC on the catalytic converter, an axial temperature profile is generated. The position of the maximum of said temperature profile along the catalytic converter is dependent on the current light-off temperature. The temperature profile travels through the catalytic converter and can be measured at the outlet of the catalytic converter as a time-dependent profile. The original axial temperature profile can be inferred from the time-dependent profile. Using a calculation program, the current light-off temperature of the catalytic converter on the vehicle can be determined. The method has the advantage that the test can take place at exhaust-gas temperatures considerably higher than the light-off temperature. In this way, it is ensured that the test pulse does not lead to increased pollutant emissions.
    • 本发明描述了一种用于确定车辆上的催化转化器的关闭温度的方法。 通过该方法确定催化转化器的老化条件。 为了测试催化转化器,后者例如用CO / HC测试脉冲加载。 在催化转化器附加CO和HC的燃烧过程中,产生轴向温度分布。 沿着催化转化器的最大温度曲线的位置取决于当前的关闭温度。 温度曲线通过催化转化器,并且可以在催化转化器的出口处测量为时间依赖的曲线。 原始轴向温度曲线可以从时间依赖曲线推断。 使用计算程序,可以确定车辆上的催化转化器的当前关闭温度。 该方法具有的优点是,该测试可以在远低于起燃温度的废气温度下进行。 这样就可以确保测试脉冲不会导致污染物排放增加。