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14 条记录 (耗时 0.012 秒)

    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。

    PROCEDURE AND DEVICE FOR THE PURIFICATION OF EXHAUST GAS
    6.
    发明申请
    PROCEDURE AND DEVICE FOR THE PURIFICATION OF EXHAUST GAS 审中-公开
    用于净化排气的程序和装置

    公开(公告)号：US20090308056A1

    公开(公告)日：2009-12-17

    申请号：US12342958

    申请日：2008-12-23

    申请人： Hartmut LUEDERS

    发明人： Hartmut LUEDERS

    IPC分类号： F01N9/00

    CPC分类号： F01N3/2066 ,  F01N3/103 ,  F01N13/02 ,  F01N2250/02 ,  F01N2610/02 ,  F01N2610/03 ,  F02B37/00 ,  Y02T10/24

    摘要： The invention relates to a procedure for purifying exhaust gas in the exhaust gas duct of a combustion engine with an exhaust gas purification system and a SCR-catalyzer that is arranged in the exhaust gas purification system for a selective catalytic reduction of nitrous gases (SCR), whereby reducing agents for the selective catalytic reduction of nitrous gases can be added to the exhaust gas in direction of the flow before the SCR-catalyzer. According to the invention it is provided that the exhaust gas is led through a catalyzer for converting nitrous gases with hydrocarbons and subsequently through the SCR-catalyzer and that the operating parameters are adjusted in a first operating phase in such a way, that nitrous gases are mostly converted at the catalyzer for converting nitrous gases with hydrocarbons and that the operating parameters are adjusted in a second operating phase in such a way, that nitrous gases are mostly converted at the SCR-catalyzer. The adjustments for the first operating phase are selected at the start of the combustion engine. The catalyzer is heated to its operating temperature in this operating phase for the conversion of nitrous gases with hydrocarbons. Because it is arranged before the SCR-catalyzer and a particle filter that is usually arranged in front of it, its heating takes place very fast and the output of nitrous gases in the starting phase of the combustion engine can be reduced as opposed to the state of the art. The normal operation of the combustion engine is characterized by a lean mixture composition and therefore by an oxygen-rich exhaust gas. This is adjusted in the second operating phase, in which nitrous gases are converted in the SCR-catalyzer that is now heated to its operating temperature.

    摘要翻译： 本发明涉及一种排气净化系统和SCR催化器的内燃机排气管道净化废气的方法，该排气净化系统设置在排气净化系统中，用于选择性催化还原氮气（SCR） ，其中可以在SCR催化剂之前的流动方向上向废气中添加用于氮气选择性催化还原的还原剂。 根据本发明，提供废气被引导通过用于用烃转化亚硝态气并随后通过SCR-催化剂的催化剂，并且操作参数在第一操作阶段以这样的方式被调节： 大部分在催化剂下转化为用烃转化亚硝气，并且在第二操作阶段中调节操作参数，使得氮气主要在SCR催化剂下转化。 在内燃机启动时选择第一运行阶段的调整。 在该操作阶段将催化剂加热至其工作温度，以便用碳氢化合物转化含氮气体。 由于其安装在SCR催化剂之前，并且通常布置在其前面的颗粒过滤器，其加热发生得非常快，并且与该状态相反，在内燃机起动阶段的亚硝基气体的输出可以减小 的艺术。 内燃机的正常运行的特征在于贫混合物组成，因此通过富氧排气。 这在第二个操作阶段进行了调整，在第二个操作阶段，在SCR催化器中将氮气转化为现在加热到其工作温度。

    Metering device for liquid reducing agent
    7.
    发明授权
    Metering device for liquid reducing agent 有权
    液体还原剂计量装置

    公开(公告)号：US08225598B2

    公开(公告)日：2012-07-24

    申请号：US12521411

    申请日：2007-11-15

    申请人： Rainer Haeberer ,  Matthias Horn ,  Hartmut Lueders ,  Leopold Bernegger

    发明人： Rainer Haeberer ,  Matthias Horn ,  Hartmut Lueders ,  Leopold Bernegger

    IPC分类号： F01N3/00

    CPC分类号： F01N3/2066 ,  F01N11/00 ,  F01N2550/05 ,  F01N2610/02 ,  F01N2610/08 ,  F01N2610/14 ,  F01N2610/1406 ,  F01N2610/1493 ,  Y02T10/24 ,  Y02T10/47

    摘要： A metering device for introducing liquid reducing agent into an exhaust gas pipe. A metering valve is supplied with contents from a working tank by a delivery unit and dispenses the tank contents in a discharge direction. The delivery unit establishes a negative pressure between the delivery unit and the metering valve when the delivery direction is reversed. The negative pressure causes gas to be drawn off through the metering valve against the discharge direction. The delivery direction is reversed by either a feed pump with a reversible effective direction or a feed pump and a repolarization valve which communicates with the feed pump and transposes an inlet and an outlet of the feed pump.

    摘要翻译： 一种用于将液体还原剂引入排气管的计量装置。 计量阀通过输送单元从工作罐供应内容物，并在排放方向分配罐内容物。 输送单元在输送方向相反时在输送单元和计量阀之间建立负压。 负压使得气体通过计量阀排出排出方向。 输送方向由具有可逆有效方向的进料泵或进料泵以及与进料泵连通并将进料泵的入口和出口转置的复极阀反转。

    Method for operating an internal combustion engine and a device for carrying out the method
    9.
    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。