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    Exhaust gas purification system of an internal combustion engine and method for purifying the exhaust gases thereof
    2.
    发明申请
    Exhaust gas purification system of an internal combustion engine and method for purifying the exhaust gases thereof 审中-公开
    一种内燃机的废气净化系统及其排气净化方法

    公开(公告)号：US20060196169A1

    公开(公告)日：2006-09-07

    申请号：US10527602

    申请日：2003-06-02

    申请人： Wolfgang Ripper ,  Johannes Schaller ,  Hartmut Lueders ,  Christian Walz ,  Thorsten Mayer

    发明人： Wolfgang Ripper ,  Johannes Schaller ,  Hartmut Lueders ,  Christian Walz ,  Thorsten Mayer

    IPC分类号： F01N5/04 ,  F01N3/00

    CPC分类号： F01N3/36 ,  F01N3/021 ,  F01N3/035 ,  F01N3/2066 ,  F01N13/009 ,  F01N2250/02 ,  F01N2610/14 ,  F02B37/00 ,  Y02T10/24

    摘要： An exhaust gas purification system for purifying the exhaust gas of an internal combustion engine, especially an internal combustion engine featuring auto-ignition and/or direct fuel injection, is provided. The system includes at least one oxidation catalytic converter disposed in an exhaust gas duct of the internal combustion engine, at least one device for selective catalytic reduction of the exhaust gases which is installed downstream of the oxidation catalytic converter, and a feed device for feeding reducing agent into the exhaust gas stream upstream of, or in, the device for selective catalytic reduction. A switch-over device is provided for selectively feeding reducing agent into the exhaust gas stream upstream of, or inside, the at least one oxidation catalytic converter. A corresponding method for purifying the exhaust gas of an internal combustion engine is also provided.

    摘要翻译： 提供了一种用于净化内燃机，特别是具有自动点火和/或直接燃料喷射的内燃机的排气的废气净化系统。 该系统包括设置在内燃机的排气管道中的至少一个氧化催化转化器，至少一个用于选择性催化还原安装在氧化催化转化器下游的废气的装置，以及用于进料还原的进料装置 试剂进入用于选择性催化还原的装置中或在其中的废气流中。 提供了一种切换装置，用于选择性地将还原剂进料到至少一个氧化催化转化器的上游或内部的废气流中。 还提供了用于净化内燃机的废气的相应方法。

    Method for operating an internal combustion engine and a device for carrying out the method
    4.
    发明授权
    Method for operating an internal combustion engine and a device for carrying out the method 失效
    用于操作内燃机的方法和用于执行该方法的装置

    公开(公告)号：US07603846B2

    公开(公告)日：2009-10-20

    申请号：US11236162

    申请日：2005-09-26

    申请人： Hartmut Lueders ,  Christian Walz ,  Thorsten Mayer ,  Matthias Loehr

    发明人： Hartmut Lueders ,  Christian Walz ,  Thorsten Mayer ,  Matthias Loehr

    IPC分类号： F01N3/00

    CPC分类号： F01N3/208 ,  F01N11/002 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2610/02 ,  F01N2900/0408 ,  F01N2900/1402 ,  F01N2900/1622 ,  F02D41/146 ,  F02D41/1462 ,  F02D41/1465 ,  F02D2200/0802 ,  F02D2200/0811 ,  Y02T10/24 ,  Y02T10/47

    摘要： A method for operating an internal combustion engine whose exhaust area has at least one SCR catalytic converter and a device for carrying out the method are described. The SCR catalytic converter receiving the reagent supports the conversion of the raw NOx emission of the internal combustion engine. At least a measure of the NOx concentration occurring downstream from the SCR catalytic converter is calculated and this value may be used to define a metering signal for the reagent and/or a heating measure for heating the SCR catalytic converter may be initiated. According to a refinement of this arrangement, a difference between the calculated NOx concentration and the sum of the measured NOx concentration and the measured reagent concentration downstream from the SCR catalytic converter is determined, and it is possible to intervene in the determination of the metering signal depending on the difference.

    摘要翻译： 描述了一种用于操作其排气区域具有至少一个SCR催化转化器的内燃机和用于执行该方法的装置的方法。 接收该试剂的SCR催化转化器支持内燃机的原始NOx排放的转换。 计算SCR催化转化器下游发生的NOx浓度的量度，并且可以使用该值来定义试剂的计量信号和/或用于加热SCR催化转化器的加热措施。 根据该结构的改进，确定计算出的NOx浓度与测定的NOx浓度与SCR催化剂下游的测定试剂浓度的和之间的差异，并且可以介入计量信号的确定 取决于差异。

    Procedure and device to monitor an exhaust gas after-treatment system
    6.
    发明申请
    Procedure and device to monitor an exhaust gas after-treatment system 失效
    废气处理系统监控程序和装置

    公开(公告)号：US20070144151A1

    公开(公告)日：2007-06-28

    申请号：US11638764

    申请日：2006-12-14

    申请人： Hartmut Lueders ,  Christian Walz ,  Matthias Loehr

    发明人： Hartmut Lueders ,  Christian Walz ,  Matthias Loehr

    IPC分类号： F01N3/00 ,  F01N3/10

    CPC分类号： F01N11/002 ,  F01N3/0253 ,  F01N3/2066 ,  F01N13/009 ,  F01N2250/02 ,  F01N2560/021 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2570/18 ,  F01N2610/02 ,  F01N2610/14 ,  F01N2900/1402 ,  F01N2900/1622 ,  Y02T10/24 ,  Y02T10/47

    摘要： The invention concerns a procedure to monitor an exhaust gas after-treatment system of an internal combustion engine with a motor block and an exhaust gas duct, which has at least one catalytic converter, upstream from which a reagent substance necessary for the NOx reduction in the catalytic converter is introduced by means of an introduction device, whereby the reduction agent rate is increased to such an extent at defined reference operating points until an ammonia breach is detected in direction of flow behind the catalytic converter by means of an ammonia sensitive sensor in the exhaust gas duct.The invention additionally concerns a device to monitor an exhaust gas after-treatment system of an internal combustion engine with a motor block and at least one exhaust gas duct, which has at least one NOx sensor to determine the NOx content in the exhaust gas and at least one catalytic converter, upstream from which a reagent substance necessary for the NOx reduction in the catalytic converter can be introduced by means of an introduction device, whereby the NOx sensor as well as additional sensors to measure the temperature at the catalytic converter and to measure the air in the air delivery duct as well as an ammonia sensitive sensor in the direction of flow behind the catalytic converter maintain an active connection to the monitoring unit, whereby an excess metering of the reagent substance can be intentionally initiated in the monitoring unit, an ammonia breach can be detected by means of an ammonia sensitive sensor and the ammonia storage capability can be determined.The optimized metering strategy, which is thereby guaranteed, allows for high NOx conversions with minimal ammonia slip, which is especially advantageous with regard to the stricter exhaust gas standards.

    摘要翻译： 本发明涉及一种监测具有马达块和排气管的内燃机的废气后处理系统的方法，其具有至少一个催化转化器，在该上游处， 通过引入装置引入催化转化器中的x还原，由此在限定的参考操作点将还原剂速率增加到这样的程度，直到在催化转化器后面的流动方向上检测到氨泄漏 废气管道中的氨敏感传感器的装置。 本发明还涉及一种用于监测内燃机的废气后处理系统的装置，其具有马达块和至少一个排气管道，所述至少一个废气管道具有至少一个传感器以确定 废气中的NO x x N含量和至少一个催化转化器，催化转化器中的NO x还原所需的试剂物质的上游可通过 引导装置，其中NO x传感器以及用于测量催化转化器处的温度并且测量空气输送管道中的空气以及氨敏感传感器的附加传感器，其方向为 催化转化器后面的流动保持与监测单元的主动连接，由此可以在监测单元中有意地启动试剂物质的过量计量，氨泄漏可以通过氨敏感传感器和氨的检测 可以确定托盘能力。 由此保证的优化的计量策略允许具有最小氨滑移的高NO x转换，这对于更严格的废气标准是特别有利的。