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    • 4. 发明授权
    • Method of monitoring soot mass in a particulate filter and monitoring system for same with correction for active regeneration inefficiency
    • 在微粒过滤器和监控系统中监测烟灰质量的方法与用于主动再生无效率的校正相同
    • US08478565B2
    • 2013-07-02
    • US12829700
    • 2010-07-02
    • Raffaello ArdaneseMichelangelo ArdaneseRebecca J. DarrPaul Jasinkiewicz
    • Raffaello ArdaneseMichelangelo ArdaneseRebecca J. DarrPaul Jasinkiewicz
    • G01G7/00
    • F01N9/002F01N2560/025F01N2560/06F01N2560/08F01N2900/0412F01N2900/0416F01N2900/1606Y02T10/47
    • A method of monitoring soot mass in a particulate filter of an exhaust system includes determining a pressure differential across the filter, obtaining a first soot mass estimate by fitting the determined pressure differential to a first stored database of measured or modeled pressure differentials and corresponding measured soot masses taken during filter regeneration using a substantially similar filter previously loaded following a complete filter regeneration, and obtaining a second soot mass estimate by fitting the determined pressure differential to a second stored database of measured or modeled pressure differentials and corresponding measured soot masses taken during filter regeneration using a substantially similar filter loaded following an incomplete filter regeneration. Actual soot mass is estimated by calculating a weighted sum of the first and second soot mass estimates with weighting based on operating parameters indicative of regeneration efficiency. A monitoring system for a particulate filter is also provided.
    • 监测排气系统的微粒过滤器中的烟灰质量的方法包括确定过滤器两端的压力差,通过将所确定的压力差拟合到测量或建模的压力差的第一储存数据库和对应的测量烟灰来获得第一烟灰质量估计值 在过滤器再生期间使用预先装载的完全过滤器再生后的基本相似的过滤器获取的质量,以及通过将确定的压差拟合到第二存储的数据库中获得第二烟灰质量估计,所述第二储存数据库测量或建模的压力差和在过滤器期间取得的对应的测量的烟灰质量 使用在不完全过滤器再生之后加载的基本相似的过滤器进行再生。 通过基于指示再生效率的操作参数通过加权来计算第一和第二烟灰质量估计的加权和来估计实际烟灰质量。 还提供了一种用于微粒过滤器的监测系统。