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1.发明授权公开(公告)号：US08984867B2
公开(公告)日：2015-03-24
申请号：US13442924
申请日：2012-04-10
申请人： Igor Anilovich , John Coppola , Janean E. Kowalkowski , John F. Van Gilder , Ognyan N. Yanakiev
发明人： Igor Anilovich , John Coppola , Janean E. Kowalkowski , John F. Van Gilder , Ognyan N. Yanakiev
CPC分类号： F01N3/021 , F01N3/103 , F01N3/2066 , F01N11/00 , F01N13/02 , F01N2340/06 , F01N2560/026 , Y02A50/2325 , Y02T10/24 , Y02T10/47
摘要： A method for assessing NO2 generation efficiency in a diesel engine after-treatment (AT) system having a diesel oxidation catalyst (DOC) downstream of the engine generating the NO2 and a selective catalytic reduction (SCR) catalyst downstream of the DOC converting NOX with the aid of the NO2. Engine exhaust gas flow is passed into the AT system and a reductant is injected into the gas flow between the DOC and the SCR catalyst. SCR inlet gas flow temperature is monitored during transient engine operation and DOC inlet and SCR catalyst outlet NOX concentrations are detected when the SCR catalyst inlet gas flow temperature is in a predetermined range. SCR catalyst NOX conversion efficiency is determined using the detected DOC inlet and SCR catalyst outlet concentrations of NOX. Additionally, whether the NO2 generation efficiency is at or above threshold efficiency is assessed by comparing the determined and threshold NOX conversion efficiencies.
摘要翻译： 一种用于评估在发动机发动机下游的柴油氧化催化剂（DOC）的柴油机后处理（AT）系统中的NO 2产生效率的方法和在DOC转化NOX的下游的选择性催化还原（SCR）催化剂， NO2的帮助。 发动机废气流入AT系统，并将还原剂注入到DOC和SCR催化剂之间的气流中。 在SCR催化剂入口气体流动温度处于预定范围内时，在瞬时发动机运转期间监测SCR入口气体流量温度，并检测DOC入口和SCR催化剂出口NO x浓度。 SCR催化剂NOX转化效率使用检测到的DOC入口和SCR催化剂出口浓度的NOX测定。 另外，通过比较确定的和阈值的NOX转换效率来评估NO 2产生效率是否在阈值效率以上。
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2.发明授权Method and apparatus for controlling a diagnostic module for an exhaust gas sensor 有权用于控制废气传感器的诊断模块的方法和装置公开(公告)号：US08924131B2
公开(公告)日：2014-12-30
申请号：US13479747
申请日：2012-05-24
IPC分类号： B60T7/12
CPC分类号： F02D41/146 , F01N2550/00 , F01N2560/02 , F01N2560/025 , F02D41/123 , F02D41/1456 , F02D41/1495 , F02D2200/101
摘要： A method and apparatus for controlling a diagnostic module for an exhaust gas sensor in a vehicle is provided. The exhaust gas sensor is located in an exhaust pathway in the vehicle. The diagnostic module may be configured to perform a signal range verification of an oxygen sensor portion of the exhaust gas sensor. A controller is operatively connected to the exhaust gas sensor and to the vehicle engine. The controller disables the diagnostic module when one or more entry conditions are satisfied. The entry conditions may include requiring the engine speed to be greater than a fuel cut-off threshold, the fuel cut-off threshold being the engine speed at which the fuel to the engine is terminated. The entry conditions may include: no fuel being delivered to the engine; and a vehicle exhaust brake mode being activated such that the exhaust pathway from the engine is obstructed.
摘要翻译： 提供了一种用于控制车辆中的废气传感器的诊断模块的方法和装置。 废气传感器位于车辆的排气路径中。 诊断模块可以被配置为执行废气传感器的氧传感器部分的信号范围验证。 控制器可操作地连接到废气传感器和车辆发动机。 当满足一个或多个输入条件时，控制器禁用诊断模块。 进入条件可以包括要求发动机转速大于燃料截止阈值，燃料切断阈值是终止燃油的发动机转速。 进入条件可能包括：没有燃料被输送到发动机; 并且车辆排气制动模式被激活，使得来自发动机的排气通道被阻挡。
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3.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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4.发明授权Exhaust diagnostic control system and method with selective disablement of NOx reduction efficiency diagnostic 有权排气诊断控制系统和方法，选择性地禁用NOx还原效率诊断公开(公告)号：US08720187B2
公开(公告)日：2014-05-13
申请号：US13465069
申请日：2012-05-07
CPC分类号： F01N3/2066 , F01N11/00 , F01N2900/1622 , F02D41/024 , Y02A50/2325 , Y02T10/24 , Y02T10/47
摘要： An exhaust diagnostic control system comprises a test enabling module, an exhaust gas temperature management module in communication with the test enabling module, and a component management module configured for executing a test for determining a reduction efficiency associated with the after-treatment component. The test enabling module is configured for assessing a reliability of an estimated level of reductant load on an after-treatment component, and, based on the reliability, selectively facilitating disablement of a subsequent test for determining an efficiency of NOx reduction in the after-treatment component. The exhaust gas temperature management module is configured for selectively adjusting a temperature of the after-treatment component to a predetermined temperature range using intrusive exhaust gas temperature management. The test for determining reduction efficiency comprises determining a NOx reduction efficiency of the after-treatment component.
摘要翻译： 排气诊断控制系统包括测试启用模块，与测试启用模块通信的排气温度管理模块，以及被配置为执行用于确定与后处理组件相关联的降低效率的测试的组件管理模块。 测试使能模块被配置为评估后处理部件的估计的还原剂负载水平的可靠性，并且基于可靠性，选择性地促进了用于确定后处理中的NOx还原效率的后续测试的禁用 零件。 排气温度管理模块被配置为使用侵入式废气温度管理来选择性地将后处理部件的温度调节到预定温度范围。 用于确定还原效率的测试包括确定后处理组件的NOx还原效率。
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公开(公告)号：US20130298527A1
公开(公告)日：2013-11-14
申请号：US13467513
申请日：2012-05-09
IPC分类号： F01N3/20
CPC分类号： F01N3/023 , F01N3/2066 , F01N9/002 , F01N13/008 , F01N13/0097 , F01N2560/026 , F01N2900/1602 , Y02A50/2325 , Y02T10/24 , Y02T10/47
摘要： An apparatus and method of controlling a vehicle aftertreatment system is provided. The aftertreatment system treats exhaust gas produced by the vehicle engine and includes a particulate filter, and a NOx reducing device such as a selective catalytic reduction (SCR) device. The particulate filter is configured to regenerate to remove accumulated particles when the exhaust gas is heated above a regeneration temperature. A diagnostic device is included for monitoring the aftertreatment system. The diagnostic device may be a sensor for measuring the oxides of nitrogen (NOx) and/or an SCR efficiency monitor. A controller is employed to optimize the function of the diagnostic device. The controller does not enable the diagnostic device when the vehicle is powered until one or more entry conditions are satisfied.
摘要翻译： 提供一种控制车辆后处理系统的装置和方法。 后处理系统处理由车辆发动机产生的废气，并且包括微粒过滤器和诸如选择性催化还原（SCR）装置的NOx还原装置。 当废气被加热到再生温度以上时，颗粒过滤器被配置为再生以除去累积的颗粒。 包括用于监测后处理系统的诊断装置。 诊断装置可以是用于测量氮氧化物（NOx）和/或SCR效率监测器的传感器。 采用控制器来优化诊断装置的功能。 当车辆通电时，控制器不启用诊断装置，直到满足一个或多个进入条件。
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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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7.发明申请公开(公告)号：US20140069081A1
公开(公告)日：2014-03-13
申请号：US13611368
申请日：2012-09-12
CPC分类号： F01N11/002 , F01N2550/04 , F01N2900/0422 , F01N2900/1404 , F01N2900/1406 , F01N2900/1411 , Y02T10/47
摘要： A vehicle includes an engine, an exhaust system having a particulate filter which removes soot from the exhaust stream, a sensor, and a controller. The sensor measures instantaneous differential pressure across the filter. The controller executes a method to selectively enable or disable execution of an efficiency diagnostic of the filter as a function of a learned differential pressure offset value. The controller may also compare the differential pressure to a calibrated threshold and execute a control action when the differential pressure falls within an allowable range of the threshold. This may include applying the differential pressure offset value and enabling execution of the diagnostic using measurements from the zeroed sensor. Another control action may be executed when the measured differential pressure is not within the allowable range of the threshold, including disabling the execution of the diagnostic and setting a diagnostic code indicating that the sensor may be faulty.
摘要翻译： 车辆包括发动机，具有从排气流中除去烟灰的微粒过滤器的排气系统，传感器和控制器。 传感器测量过滤器上的瞬时压差。 控制器执行一种方法，以根据学习的压差偏移值来选择性地启用或禁用对过滤器的效率诊断的执行。 控制器还可以将差压与校正的阈值进行比较，并且当差压在阈值的允许范围内时执行控制动作。 这可以包括应用差压偏移值并且使得能够使用来自零点传感器的测量执行诊断。 当测量的压差不在阈值的允许范围内时，可以执行另一控制动作，包括禁止执行诊断并设置指示传感器可能有故障的诊断代码。
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公开(公告)号：US08629781B2
公开(公告)日：2014-01-14
申请号：US13101348
申请日：2011-05-05
IPC分类号： G08B17/10
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，以及当整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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9.发明申请METHOD AND APPARATUS FOR CONTROLLING A DIAGNOSTIC MODULE FOR AN EXHAUST GAS SENSOR 有权用于控制排气传感器的诊断模块的方法和装置公开(公告)号：US20130317727A1
公开(公告)日：2013-11-28
申请号：US13479747
申请日：2012-05-24
CPC分类号： F02D41/146 , F01N2550/00 , F01N2560/02 , F01N2560/025 , F02D41/123 , F02D41/1456 , F02D41/1495 , F02D2200/101
摘要： A method and apparatus for controlling a diagnostic module for an exhaust gas sensor in a vehicle is provided. The exhaust gas sensor is located in an exhaust pathway in the vehicle. The diagnostic module may be configured to perform a signal range verification of an oxygen sensor portion of the exhaust gas sensor. A controller is operatively connected to the exhaust gas sensor and to the vehicle engine. The controller disables the diagnostic module when one or more entry conditions are satisfied. The entry conditions may include requiring the engine speed to be greater than a fuel cut-off threshold, the fuel cut-off threshold being the engine speed at which the fuel to the engine is terminated. The entry conditions may include: no fuel being delivered to the engine; and a vehicle exhaust brake mode being activated such that the exhaust pathway from the engine is obstructed.
摘要翻译： 提供了一种用于控制车辆中的废气传感器的诊断模块的方法和装置。 废气传感器位于车辆的排气路径中。 诊断模块可以被配置为执行废气传感器的氧传感器部分的信号范围验证。 控制器可操作地连接到废气传感器和车辆发动机。 当满足一个或多个输入条件时，控制器禁用诊断模块。 进入条件可以包括要求发动机转速大于燃料截止阈值，燃料切断阈值是终止燃油的发动机转速。 进入条件可能包括：没有燃料被输送到发动机; 并且车辆排气制动模式被激活，使得来自发动机的排气通道被阻挡。
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公开(公告)号：US20130312389A1
公开(公告)日：2013-11-28
申请号：US13477899
申请日：2012-05-22
申请人： Ognyan N. Yanakiev , Igor Anilovich , Cristian Taibi , Charles E. Solbrig , Janean E. Kowalkowski
发明人： Ognyan N. Yanakiev , Igor Anilovich , Cristian Taibi , Charles E. Solbrig , Janean E. Kowalkowski
IPC分类号： F01N11/00
CPC分类号： F01N11/00 , F01N9/002 , F01N2550/04 , F01N2560/025 , F01N2560/05 , F01N2560/14 , F02B37/22 , Y02T10/47
摘要： An internal combustion engine includes a particulate filter that is configured to treat exhaust gas. A method for monitoring the particulate filter includes employing a soot sensor to monitor the exhaust gas downstream of the particulate filter. A fault is detected in the particulate filter when accumulated soot mass indicated by the soot sensor exceeds a soot mass threshold over a course of engine operation between a first regeneration event and a second regeneration event of the particulate filter. A control module associated with operation of the internal combustion engine is notified of the fault.
摘要翻译： 内燃机包括被配置为处理废气的微粒过滤器。 用于监测颗粒过滤器的方法包括采用烟尘传感器来监测微粒过滤器下游的废气。 在微粒过滤器的第一再生事件和第二再生事件之间的发动机运转过程中，由烟灰传感器指示的累积烟灰质量超过烟灰质量阈值时，在微粒过滤器中检测到故障。 通知与内燃机运转相关的控制模块。
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