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

    IPC分类号: G01M15/10

    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
    5.
    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

    IPC分类号: G01N31/10

    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。

    HYDROCARBON RETAINING AND PURGING SYSTEM
    6.
    发明申请
    HYDROCARBON RETAINING AND PURGING SYSTEM 有权
    油气保存和净化系统

    公开(公告)号:US20100223921A1

    公开(公告)日:2010-09-09

    申请号:US12396782

    申请日:2009-03-03

    IPC分类号: F01N3/021

    摘要: Methods and systems are provided for operating an engine having a hydrocarbon retaining system and an emission control device coupled to an engine exhaust, the engine exhaust comprising a venturi. One example method comprises, during a storing condition, routing exhaust gas through the venturi without generating a venturi action, and then to the hydrocarbon retaining system, while bypassing the emission control device, to store hydrocarbons in the hydrocarbon retaining system, and during a purging condition, routing exhaust gas through the venturi while generating venturi action, then to the emission control device, and then to the hydrocarbon retaining system, to purge stored hydrocarbons, wherein a flow of purged hydrocarbons is drawn back to the venturi via venturi action.

    摘要翻译: 提供了用于操作具有碳氢化合物保持系统的发动机和耦合到发动机排气的排放控制装置的方法和系统,所述发动机排气包括文氏管。 一个示例性方法包括在储存条件期间,通过文丘里管排出废气而不产生文丘里管作用,然后在绕过排放控制装置的同时,将碳氢化合物储存在碳氢化合物保留系统中并在清洗期间 条件是,通过文丘里管排出废气,同时产生文氏管作用,然后排放到排放控制装置,然后到烃保留系统,以清除储存的碳氢化合物,其中通过文丘里作用将清除的烃流引导回文丘里管。