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    Procedure and device to monitor an exhaust gas after-treatment system
    3.
    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。

    Method for operating an internal combustion engine and a device for carrying out the method
    5.
    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。

    Method for operating an internal combustion engine and device for implementing the method
    7.
    发明授权
    Method for operating an internal combustion engine and device for implementing the method 失效
    用于操作内燃机的方法和用于实施该方法的装置

    公开(公告)号：US08578701B2

    公开(公告)日：2013-11-12

    申请号：US11517865

    申请日：2006-09-07

    申请人： Torsten Handler ,  Christian Walz ,  Matthias Loehr

    发明人： Torsten Handler ,  Christian Walz ,  Matthias Loehr

    IPC分类号： F01N3/00

    CPC分类号： F01N9/00 ,  Y02T10/47

    摘要： A method for operating an internal combustion engine in whose exhaust-gas region at least one SCR catalytic converter is disposed, which is acted upon by a reagent contributing to the NOx conversion in the SCR catalytic converter, and a device for implementing the method. The reagent level in the SCR catalytic converter is controlled or regulated to a predefined reagent setpoint level, which is specified to at least a maximum value, which corresponds to an SCR catalytic converter completely filled with reagent. In this way the SCR catalytic converter is always operated at the highest possible efficiency at which the highest possible NOx conversion takes place.

    摘要翻译： 一种用于操作内燃机的方法，所述内燃机的排气区域设置有至少一个SCR催化转化器，所述SCR催化转化器由SCR催化转化器中的NOx转化作用的试剂作用，以及用于实施该方法的装置。 SCR催化转化器中的试剂水平被控制或调节到预定的试剂设定值水平，其被规定为至少最大值，其对应于完全填充有试剂的SCR催化转化器。 以这种方式，SCR催化转化器始终以最高可能的NOx转化率发生的最高效率运行。

    METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE AND DEVICE FOR IMPLEMENTING THE METHOD
    8.
    发明申请
    METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE AND DEVICE FOR IMPLEMENTING THE METHOD 有权
    用于操作内燃机的方法和用于实施该方法的装置

    公开(公告)号：US20090199542A1

    公开(公告)日：2009-08-13

    申请号：US12066231

    申请日：2006-08-01

    申请人： Christian Walz ,  Matthias Loehr ,  Andreas Rudolph

    发明人： Christian Walz ,  Matthias Loehr ,  Andreas Rudolph

    IPC分类号： F01N11/00 ,  F01N3/10 ,  F01N9/00

    CPC分类号： F01N3/208 ,  B01D53/90 ,  B01D53/9409 ,  B01D53/9495 ,  F01N9/00 ,  F01N9/005 ,  F01N2390/02 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/07 ,  F01N2560/14 ,  F01N2610/146 ,  F01N2900/0408 ,  F01N2900/14 ,  F01N2900/1622 ,  F01N2900/1814 ,  Y02T10/24 ,  Y02T10/47

    摘要： The invention relates to a method for operating an internal combustion engine, in the exhaust gas section of which is arranged at least one SCR catalytic converter, which is hit with a reagent that contributes to NOx conversion in the SCR catalytic converter, and to a device for implementing the method. At least one measure is calculated for the NOx concentration downstream after the SCR catalytic converter. An NOx sensor, which is arranged downstream after the SCR catalytic converter, generates an exhaust gas sensor signal which corresponds to at least the NOx concentration and optionally, as a result of cross sensitivity, to a reagent slip. A reagent signal, which determines the dosage of reagent, is influenced by a correction signal as a function of the difference and as a function of a measure for the temperature of the SCR catalytic converter.

    摘要翻译： 本发明涉及一种操作内燃机的方法，其排气部分布置有至少一个SCR催化转化器，该SCR催化转化器用有助于SCR催化转化器中NOx转化的试剂和一个装置 用于实现该方法。 在SCR催化转化器之后，对下游的NOx浓度计算至少一个量度。 布置在SCR催化转化器后面的NOx传感器产生对应于至少NOx浓度的排气传感器信号，并且可选地，作为交叉灵敏度的结果，产生对试剂滑移的排气传感器信号。 确定试剂剂量的试剂信号受作为差异的函数的校正信号和作为SCR催化转化器的温度的测量的函数的影响。

    Method for operating an internal combustion engine and device for implementing the method
    9.
    发明申请
    Method for operating an internal combustion engine and device for implementing the method 失效
    用于操作内燃机的方法和用于实施该方法的装置

    公开(公告)号：US20070056267A1

    公开(公告)日：2007-03-15

    申请号：US11517865

    申请日：2006-09-07

    申请人： Torsten Handler ,  Christian Walz ,  Matthias Loehr

    发明人： Torsten Handler ,  Christian Walz ,  Matthias Loehr

    IPC分类号： F01N3/00

    CPC分类号： F01N9/00 ,  Y02T10/47

    摘要： A method for operating an internal combustion engine in whose exhaust-gas region at least one SCR catalytic converter is disposed, which is acted upon by a reagent contributing to the NOx conversion in the SCR catalytic converter, and a device for implementing the method. The reagent level in the SCR catalytic converter is controlled or regulated to a predefined reagent setpoint level, which is specified to at least a maximum value, which corresponds to an SCR catalytic converter completely filled with reagent. In this way the SCR catalytic converter is always operated at the highest possible efficiency at which the highest possible NOx conversion takes place.

    摘要翻译： 一种用于操作内燃机的方法，所述内燃机的排气区域设置有至少一个SCR催化转化器，所述SCR催化转化器由SCR催化转化器中的NOx转化作用的试剂作用，以及用于实施该方法的装置。 SCR催化转化器中的试剂水平被控制或调节到预定的试剂设定值水平，其被规定为至少最大值，其对应于完全填充有试剂的SCR催化转化器。 以这种方式，SCR催化转化器始终以最高可能的NOx转化率发生的最高效率运行。

    Method for operating an internal combustion engine and device for carrying out the method
    10.
    发明授权
    Method for operating an internal combustion engine and device for carrying out the method 有权
    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：US08024921B2

    公开(公告)日：2011-09-27

    申请号：US12066223

    申请日：2006-07-31

    申请人： Christian Walz ,  Matthias Loehr ,  Andreas Rudolph

    发明人： Christian Walz ,  Matthias Loehr ,  Andreas Rudolph

    IPC分类号： F01N3/00 ,  F01N3/10

    CPC分类号： F01N3/208 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2610/02 ,  F01N2610/146 ,  F01N2900/0402 ,  F01N2900/08 ,  F01N2900/14 ,  F01N2900/1814 ,  Y02T10/24

    摘要： A method for operating an internal combustion engine in whose exhaust gas region at least one SCR catalytic converter is arranged, a reagent which contributes to NOx conversion in the SCR catalytic converter being applied to said SCR catalytic converter, and a device for carrying out the method are proposed. A measure for the NOx current which occurs downstream of the SCR catalytic converter is both calculated and measured with an NOx sensor which has lateral sensitivity to the reagent. The difference between the calculated measure and the measured measure of the NOx current is determined. A reagent signal which defines the metering of the reagent is influenced as a function of the difference. Plausibility checking is provided, during which the reagent quantity which is metered in a predefined time period and the reagent quantity which is converted in the SCR catalytic converter and/or the converted NOx quantity are compared with one another. When a deviation is detected, a correction signal which also influences the reagent signal is made available.

    摘要翻译： 一种用于操作其排气区域中至少一个SCR催化转化器的内燃机的方法，用于施加到所述SCR催化转化器的SCR催化转化器中的有助于NOx转化的试剂，以及用于执行该方法的装置 被提出。 利用对试剂具有侧向敏感性的NOx传感器来计算和测量在SCR催化转化器下游发生的NOx电流的测量。 确定计算的测量值与测量的NOx电流的测量值之间的差异。 定义试剂计量的试剂信号作为差异的函数受到影响。 提供了可靠性检查，其中在预定时间段内计量的试剂量和SCR催化转化器中转换的试剂量和/或转化的NOx量彼此进行比较。 当检测到偏差时，也会影响也影响试剂信号的校正信号。