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    Control and Diagnostic Approach for Emission Control Device
    2.
    发明申请
    Control and Diagnostic Approach for Emission Control Device 有权
    排放控制装置的控制和诊断方法

    公开(公告)号：US20070256406A1

    公开(公告)日：2007-11-08

    申请号：US11742806

    申请日：2007-05-01

    申请人： Imad Hassan Makki ,  James Michael Kerns ,  Michael James Uhrich ,  Michael Igor Kluzner

    发明人： Imad Hassan Makki ,  James Michael Kerns ,  Michael James Uhrich ,  Michael Igor Kluzner

    IPC分类号： F01N3/00 ,  F01N7/00

    CPC分类号： F01N11/007 ,  Y02T10/47

    摘要： A system and method for engine control and diagnostics are described. The engine system may include an engine having a catalyst in the exhaust system, the exhaust system further having an exhaust gas oxygen sensor upstream of the catalyst and downstream of the catalyst. In one example, the method may include during a first operating mode in which catalyst diagnostics are not carried out, adjusting air-fuel ratio based on both the upstream and downstream exhaust gas oxygen sensors, where air-fuel ratio adjustment responsiveness to the downstream sensor is reduced as the catalyst performance degrades; and during a second operating mode that includes catalyst diagnostics, adjusting air-fuel ratio based on at least the downstream exhaust gas oxygen sensor, where said air-fuel ratio adjustment responsiveness to the downstream sensor is temporarily increased from said reduction generated during the first operating mode.

    摘要翻译： 描述了用于发动机控制和诊断的系统和方法。 发动机系统可以包括在排气系统中具有催化剂的发动机，排气系统还在催化剂的上游和催化剂的下游还具有排气氧传感器。 在一个示例中，该方法可以包括在不执行催化剂诊断的第一操作模式中，基于上游和下游排气氧传感器调节空燃比，其中空燃比调节对下游传感器的响应性 随着催化剂性能的降低而降低; 并且在包括催化剂诊断的第二操作模式期间，至少基于下游废气氧传感器调节空燃比，其中所述下游传感器的空燃比调整响应性暂时从第一操作期间产生的所述减小暂时增加 模式。

    Engine catalyst diagnostics
    3.
    发明授权
    Engine catalyst diagnostics 有权
    发动机催化剂诊断

    公开(公告)号：US08800356B2

    公开(公告)日：2014-08-12

    申请号：US13247640

    申请日：2011-09-28

    申请人： Imad Hassan Makki ,  James Michael Kerns ,  Michael James Uhrich ,  Stephen B. Smith ,  Pankaj Kumar ,  Adam Banker

    发明人： Imad Hassan Makki ,  James Michael Kerns ,  Michael James Uhrich ,  Stephen B. Smith ,  Pankaj Kumar ,  Adam Banker

    IPC分类号： G01M15/10

    CPC分类号： F01N11/00 ,  F01N2550/02 ,  G01N33/007 ,  G06N99/005 ,  Y02T10/47

    摘要： Embodiments for predicting catalyst function are disclosed. One example embodiment includes applying a set of parameter readings for a given sample to a support vector machine to generate a classification output, recording a plurality of classification outputs for a plurality of successive samples over a first duration, and indicating catalyst degradation if a threshold percentage of the classification outputs indicates degraded catalyst performance. In this way, catalyst degradation may be indicated using a simplified model that does not require extensive calibration.

    摘要翻译： 公开了用于预测催化剂功能的实施方案。 一个示例性实施例包括将给定样本的一组参数读数应用于支持向量机以产生分类输出，在第一持续时间内记录多个连续样本的多个分类输出，并且如果阈值百分比 的分类输出表明催化剂性能下降。 以这种方式，可以使用不需要大量校准的简化模型来指示催化剂降解。

    ENGINE CATALYST DIAGNOSTICS
    4.
    发明申请
    ENGINE CATALYST DIAGNOSTICS 有权
    发动机催化剂诊断

    公开(公告)号：US20130078725A1

    公开(公告)日：2013-03-28

    申请号：US13247640

    申请日：2011-09-28

    申请人： Imad Hassan Makki ,  James Michael Kerns ,  Michael James Uhrich ,  Stephen B. Smith ,  Pankaj Kumar ,  Adam Banker

    发明人： Imad Hassan Makki ,  James Michael Kerns ,  Michael James Uhrich ,  Stephen B. Smith ,  Pankaj Kumar ,  Adam Banker

    IPC分类号： G01N31/10

    CPC分类号： F01N11/00 ,  F01N2550/02 ,  G01N33/007 ,  G06N99/005 ,  Y02T10/47

    摘要： Embodiments for predicting catalyst function are disclosed. One example embodiment includes applying a set of parameter readings for a given sample to a support vector machine to generate a classification output, recording a plurality of classification outputs for a plurality of successive samples over a first duration, and indicating catalyst degradation if a threshold percentage of the classification outputs indicates degraded catalyst performance. In this way, catalyst degradation may be indicated using a simplified model that does not require extensive calibration.

    摘要翻译： 公开了用于预测催化剂功能的实施方案。 一个示例性实施例包括将给定样本的一组参数读数应用于支持向量机以产生分类输出，在第一持续时间内记录多个连续样本的多个分类输出，并且如果阈值百分比 的分类输出表明催化剂性能下降。 以这种方式，可以使用不需要大量校准的简化模型来指示催化剂降解。