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公开(公告)号：US09080494B2
公开(公告)日：2015-07-14
申请号：US13154890
申请日：2011-06-07
CPC分类号： F01N11/00 , F01N2550/04 , F01N2900/0422 , F01N2900/08 , F01N2900/102 , F01N2900/1606 , Y02T10/47
摘要： A method of monitoring regeneration of a particulate filter is provided. The method includes evaluating whether a regeneration event is based on a fixed threshold condition; selectively setting a pass or fail status based on the evaluating; and generating a message indicating the pass or fail status.
摘要翻译： 提供了一种监测微粒过滤器再生的方法。 该方法包括评估再生事件是否基于固定阈值条件; 基于评估选择性地设置通过或失败状态; 并产生指示通过或失败状态的消息。
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2.发明授权公开(公告)号：US08783019B2
公开(公告)日：2014-07-22
申请号：US13604046
申请日：2012-09-05
IPC分类号： F01N3/00 , F01N3/20 , G01N27/41 , G01N27/411 , G01N33/00
CPC分类号： F01N3/206 , F01N3/035 , F01N3/106 , F01N3/2066 , F01N11/00 , F01N13/009 , F01N2550/02 , F01N2560/026 , F01N2610/02 , F01N2900/0416 , F01N2900/1402 , F01N2900/1621 , G01N27/41 , G01N27/4114 , G01N33/0037 , Y02A50/245 , Y02T10/24 , Y02T10/47
摘要： An exhaust treatment system is disclosed that can diagnose the performance of an exhaust treatment oxidation catalyst in converting NO to NO2. The exhaust treatment system is fluidly coupled to an internal combustion engine, and includes an oxidation catalyst disposed in an engine exhaust stream; a reductant source for injecting a reductant into the exhaust stream downstream of the oxidation catalyst; an SCR catalyst disposed in the exhaust stream downstream of the reductant source; and a gas sensor, disposed in the exhaust stream downstream of the oxidation catalyst and upstream of the reductant source, comprising a plurality of sensing or pumping cells that measures NO concentration in the exhaust gas and NO2 concentration in the exhaust gas.
摘要翻译： 公开了一种废气处理系统，其可以诊断将NO转化为NO2的废气处理氧化催化剂的性能。 排气处理系统流体地联接到内燃机，并且包括设置在发动机排气流中的氧化催化剂; 用于将还原剂注入到氧化催化剂下游的排气流中的还原剂源; SCR催化剂，其设置在所述还原剂源的下游的排气流中; 以及气体传感器，设置在所述氧化催化剂下游的排气流和还原剂源的上游，所述气体传感器包括测量废气中的NO浓度和废气中的NO 2浓度的多个感测或泵送单元。
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公开(公告)号：US20120280819A1
公开(公告)日：2012-11-08
申请号：US13101348
申请日：2011-05-05
CPC分类号： F01N3/2066 , F01N11/00 , F01N2550/02 , F01N2900/0404 , F01N2900/1621 , Y02A50/2325 , Y02T10/24 , Y02T10/47
摘要： A method of assessing overall efficiency of a selective-catalytic-reduction catalyst includes monitoring instantaneous efficiency of the catalyst. The method also includes determining the overall efficiency by summing instantaneous efficiency values weighted by a first set of coefficients if the most recent instantaneous efficiency value is above an instantaneous efficiency threshold. The method additionally includes determining the overall efficiency by summing instantaneous efficiency values weighted by a second set of coefficients if the most recent instantaneous efficiency value is equal to or below the instantaneous efficiency threshold. Furthermore, the method includes determining whether the overall efficiency has dropped below an overall efficiency threshold and reporting when the overall efficiency has dropped below the overall efficiency threshold. The second set of coefficients weighs the most recent instantaneous efficiency value more heavily than preceding instantaneous efficiency values as compared with the first set of coefficients. A system and a vehicle are also disclosed.
摘要翻译： 评估选择性催化还原催化剂总效率的方法包括监测催化剂的瞬时效率。 该方法还包括如果最近的瞬时效率值高于瞬时效率阈值，则通过对由第一组系数加权的瞬时效率值求和来确定总体效率。 该方法还包括如果最近的瞬时效率值等于或低于瞬时效率阈值，则通过对由第二组系数加权的瞬时效率值求和来确定总体效率。 此外，该方法包括确定总体效率是否降低到总效率阈值以下，以及当总体效率降低到总效率阈值以下时报告。 与第一组系数相比，第二组系数比先前的瞬时效率值更重要地计算最近的瞬时效率值。 还公开了一种系统和车辆。
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公开(公告)号：US08683844B2
公开(公告)日：2014-04-01
申请号：US13222025
申请日：2011-08-31
CPC分类号： F01N3/10 , F01N11/00 , F01N2560/026 , F01N2560/028 , F02D41/146 , F02D41/222 , F02D2200/70 , G01N33/007 , Y02T10/40 , Y02T10/47
摘要： A method of monitoring a sensor of an exhaust system is provided. The method includes evaluating humidity of air entering the exhaust system; and monitoring operation of a sensor in the exhaust system based on the humidity.
摘要翻译： 提供了一种监测排气系统的传感器的方法。 该方法包括评估进入排气系统的空气的湿度; 以及基于湿度监测排气系统中的传感器的运行。
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