Method for verifying the aging condition of a catalytic converter on board a vehicle
    2.
    发明授权
    Method for verifying the aging condition of a catalytic converter on board a vehicle 有权
    用于验证车辆上的催化转化器的老化状况的方法

    公开(公告)号:US08276438B2

    公开(公告)日:2012-10-02

    申请号:US12675341

    申请日:2008-08-29

    IPC分类号: G01M15/10

    摘要: 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.

    摘要翻译: 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。

    METHOD FOR VERIFYING THE AGING CONDITION OF A CATALYTIC CONVERTER ON BOARD A VEHICLE
    3.
    发明申请
    METHOD FOR VERIFYING THE AGING CONDITION OF A CATALYTIC CONVERTER ON BOARD A VEHICLE 有权
    汽车车载催化转化器老化条件的方法

    公开(公告)号:US20110056280A1

    公开(公告)日:2011-03-10

    申请号:US12675341

    申请日:2008-08-29

    IPC分类号: G01M15/10

    摘要: 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.

    摘要翻译: 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。

    Method for producing a stream of hot combustion exhaust gases at a settable temperature, apparatus for carrying out the method and use of the combustion exhaust gases for the targeted ageing of catalysts
    4.
    发明授权
    Method for producing a stream of hot combustion exhaust gases at a settable temperature, apparatus for carrying out the method and use of the combustion exhaust gases for the targeted ageing of catalysts 有权
    用于在可设定温度下生产热燃烧废气流的方法,用于实施催化剂的目标老化方法和使用燃烧废气的装置

    公开(公告)号:US08678813B2

    公开(公告)日:2014-03-25

    申请号:US11722123

    申请日:2005-12-17

    IPC分类号: F01N3/00

    摘要: A stream of exhaust gases from the combustion of hydrocarbon-containing fuels with a variable temperature can be produced by dividing the exhaust gases into two separate part-streams, cooling one part-stream and then combining the two part-streams again. The temperature of the exhaust-gas stream which has been combined again can be set to between the temperature of the combustion of the hydrocarbon-containing fuels and the temperature of the cooled exhaust-gas part-stream by corresponding throttling of the two part-streams before they are brought together again. The exhaust-gas stream produced in this way is preferably used for the defined ageing of automotive exhaust catalysts. In this context, it is particularly advantageous that the change in the temperature of the exhaust-gas stream has no influence on its air/fuel ratio.

    摘要翻译: 来自具有可变温度的含烃燃料的燃烧的废气流可以通过将废气分成两个单独的部分流,冷却一部分流,然后再次组合两个部分流来产生。 再次组合的废气流的温度可以通过相应的两部分流的节流来设定在含烃燃料的燃烧温度和冷却的废气部分流的温度之间 在他们再次聚集在一起之前。 以这种方式生产的废气流优选用于汽车尾气催化剂的限定老化。 在这种情况下,排气温度的变化对其空气/燃料比没有影响是特别有利的。

    METHOD FOR PRODUCING A STREAM OF HOT COMBUSTION EXHAUST GASES AT A SETTABLE TEMPERATURE, APPARATUS FOR CARRYING OUT THE METHOD AND USE OF THE COMBUSTION EXHAUST GASES FOR THE TARGETED AGEING OF CATALYSTS
    5.
    发明申请
    METHOD FOR PRODUCING A STREAM OF HOT COMBUSTION EXHAUST GASES AT A SETTABLE TEMPERATURE, APPARATUS FOR CARRYING OUT THE METHOD AND USE OF THE COMBUSTION EXHAUST GASES FOR THE TARGETED AGEING OF CATALYSTS 有权
    用于生产在一定温度下的热燃烧排气流的方法,用于实施方法和使用燃烧排放气体用于目标催化剂老化的方法

    公开(公告)号:US20090126354A1

    公开(公告)日:2009-05-21

    申请号:US11722123

    申请日:2005-12-17

    IPC分类号: F01N3/04 F01N3/20

    摘要: A stream of exhaust gases from the combustion of hydrocarbon-containing fuels with a variable temperature can be produced by dividing the exhaust gases into two separate part-streams, cooling one part-stream and then combining the two part-streams again. The temperature of the exhaust-gas stream which has been combined again can be set to between the temperature of the combustion of the hydrocarbon-containing fuels and the temperature of the cooled exhaust-gas part-stream by corresponding throttling of the two part-streams before they are brought together again. The exhaust-gas stream produced in this way is preferably used for the defined ageing of automotive exhaust catalysts. In this context, it is particularly advantageous that the change in the temperature of the exhaust-gas stream has no influence on its air/fuel ratio.

    摘要翻译: 来自具有可变温度的含烃燃料的燃烧的废气流可以通过将废气分成两个单独的部分流,冷却一部分流,然后再次组合两个部分流来产生。 再次组合的废气流的温度可以通过相应的两部分流的节流来设定在含烃燃料的燃烧温度和冷却的废气部分流的温度之间 在他们再次聚集在一起之前。 以这种方式生产的废气流优选用于汽车尾气催化剂的限定老化。 在这种情况下,排气温度的变化对其空气/燃料比没有影响是特别有利的。

    Single layer high performance catalyst
    9.
    发明授权
    Single layer high performance catalyst 有权
    单层高性能催化剂

    公开(公告)号:US06524992B2

    公开(公告)日:2003-02-25

    申请号:US09818998

    申请日:2001-03-28

    IPC分类号: B01J2310

    摘要: A single layer high performance catalyst containing on an inert carrier body a catalytic coating comprising platinum, rhodium and various oxide materials. The catalyst contains a catalytic coating having at least one first support material selected from the group having a first active alumina, a ceria rich ceria/zirconia mixed oxide and a zirconia component, said at least one first support material being catalyzed with a first part of the total platinum amount of the catalyst, and a second support material catalyzed with the second part of the total platinum amount and with rhodium said second support material being a second active alumina.

    摘要翻译: 在惰性载体上含有铂,铑和各种氧化物材料的催化涂层的单层高性能催化剂。 该催化剂含有具有至少一种选自具有第一活性氧化铝,富铈二氧化铈/氧化锆混合氧化物和氧化锆组分的第一载体材料的催化涂层,所述至少一种第一载体材料被第一部分催化 催化剂的总铂量,以及以总铂量的第二部分催化的第二载体材料,并且所述第二载体材料为第二活性氧化铝。