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    METHOD AND SYSTEM FOR SELECTIVELY ENABLING AND DISABLING A DIAGNOSTIC MONITOR OF A SELECTIVE-CATALYTIC-REDUCTION DEVICE
    11.
    发明申请
    METHOD AND SYSTEM FOR SELECTIVELY ENABLING AND DISABLING A DIAGNOSTIC MONITOR OF A SELECTIVE-CATALYTIC-REDUCTION DEVICE 有权
    用于选择性催化还原装置诊断监测器的方法和系统

    公开(公告)号：US20140352278A1

    公开(公告)日：2014-12-04

    申请号：US13905473

    申请日：2013-05-30

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Janean E. Kowalkowski ,  Timothy J. Holbert

    IPC: F01N11/00

    CPC classification number: F01N11/002 ,  F01N3/2066 ,  F01N9/002 ,  F01N11/00 ,  F01N2550/02 ,  F01N2900/08 ,  F01N2900/1606 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

    Abstract: A vehicle that includes an engine, an exhaust system, and a controller, and a method are disclosed herein. The exhaust system includes a passage for directing the exhaust gas stream from the engine through the series of exhaust after-treatment devices, including a selective-catalytic reduction device and a diesel particulate filter (DPF). The exhaust after-treatment devices are employed to reduce various exhaust emissions of the engine. The exhaust system, may however, prematurely return failing emissions results due to the amount of contaminants that have flowed through the exhaust system since the last regeneration even of the particulate filter. Therefore, the controller may, via the present method, alter the threshold of the SCR efficiency diagnostic due to contaminants accumulated on the DPF and selectively enable or disable the diagnostic based on a set of recorded instructions, to improve the robustness of the SCR efficiency diagnostic and prevent inaccurate failing emissions results.

    Abstract translation: 本文公开了包括发动机，排气系统和控制器的车辆以及方法。 排气系统包括用于引导来自发动机的废气流通过包括选择性催化还原装置和柴油微粒过滤器（DPF）的一系列排气后处理装置的通道。 排气后处理装置用于减少发动机的各种废气排放。 然而，排气系统可能由于微粒过滤器的最后一次再生而由于排出系统中流过的污染物的量而过早地返回故障排放结果。 因此，控制器可以通过本方法改变由于在DPF上积聚的污染物而导致的SCR效率诊断的阈值，并且基于一组记录的指令选择性地启用或禁用诊断，以提高SCR效率诊断的鲁棒性 并防止不正确的失效排放结果。

    Exponentially weighted moving averaging filter with adjustable weighting factor
    12.
    发明授权
    Exponentially weighted moving averaging filter with adjustable weighting factor 有权
    具有可调加权因子的指数加权移动平均滤波器

    公开(公告)号：US09501452B2

    公开(公告)日：2016-11-22

    申请号：US14055092

    申请日：2013-10-16

    Applicant: GM Global Technology Operations LLC

    Inventor： Janean E. Kowalkowski ,  Igor Anilovich ,  Jason J. Chung

    IPC: G06F17/18 ,  F01N11/00 ,  F02D41/22 ,  F02D41/14

    CPC classification number: G06F17/18 ,  F01N11/00 ,  F01N2560/026 ,  F02D41/146 ,  F02D41/222 ,  F02D2041/1432 ,  Y02T10/40 ,  Y02T10/47

    Abstract: A method of increasing a weighting factor of an exponentially weighted moving averaging (“EWMA”) filter is provided. The method includes monitoring a data stream containing raw data values, and determining an EWMA value based on the data stream by an electronic control module. The method includes determining if the EWMA value is between a predetermined maximum fault threshold value and a predetermined minimum fault threshold value. The method includes increasing the weighting factor of the EWMA filter to more heavily weigh incoming raw data values of the data stream based on the difference between the first raw data value and a previously calculated filtered value exceeding the calibration value.

    Abstract translation: 提供了一种增加指数加权移动平均（“EWMA”）滤波器的加权因子的方法。 该方法包括监视包含原始数据值的数据流，以及由电子控制模块基于数据流确定EWMA值。 该方法包括确定EWMA值是否在预定的最大故障阈值和预定的最小故障阈值之间。 该方法包括基于第一原始数据值和超过校准值的先前计算的滤波值之间的差异来增加EWMA滤波器的加权因子以更大地权衡数据流的输入原始数据值。

    Exhaust Gas Treatment System Including an Enhanced SCR Diagnostic Unit
    13.
    发明申请
    Exhaust Gas Treatment System Including an Enhanced SCR Diagnostic Unit 有权
    包括增强SCR诊断单元的废气处理系统

    公开(公告)号：US20150101310A1

    公开(公告)日：2015-04-16

    申请号：US14053054

    申请日：2013-10-14

    Applicant: GM Global Technology Operations LLC

    Inventor： Janean E. Kowalkowski ,  Amr Radwan ,  Sarah Funk

    IPC: F01N3/20

    CPC classification number: F01N3/2066 ,  F01N3/0885 ,  F01N3/106 ,  F01N3/208 ,  F01N9/002 ,  F01N11/00 ,  F01N13/009 ,  F01N2550/02 ,  F01N2570/04 ,  F01N2900/1612 ,  F02D41/027 ,  F02D41/029 ,  F02D2200/0811 ,  Y02T10/24 ,  Y02T10/47

    Abstract: Embodiments of the invention include a method for performing diagnostics of a selective catalytic reduction (“SCR”) device in an exhaust gas treatment system of an internal combustion engine. The method includes monitoring an amount of sulfur in the SCR device of the exhaust treatment system and monitoring, by an SCR diagnostics module, an efficiency of the SCR device and indicating when the efficiency of the SCR device falls below an efficiency diagnostics threshold. Based on determining that the amount of sulfur in the SCR device is above a first threshold, the method includes disabling an operation of the SCR diagnostics module.

    Abstract translation: 本发明的实施例包括在内燃机的废气处理系统中执行选择性催化还原（SCR）装置的诊断的方法。 该方法包括监测排气处理系统的SCR装置中的硫含量，并由SCR诊断模块监测SCR装置的效率，并指示SCR装置的效率何时降低到效率诊断阈值以下。 基于确定SCR装置中的硫含量高于第一阈值，该方法包括禁用SCR诊断模块的操作。

    EXHAUST FLUID DOSING CONTROL SYSTEM AND METHOD
    15.
    发明申请
    EXHAUST FLUID DOSING CONTROL SYSTEM AND METHOD 有权
    排气流量控制系统及方法

    公开(公告)号：US20150068196A1

    公开(公告)日：2015-03-12

    申请号：US14021143

    申请日：2013-09-09

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Janean E. Kowalkowski ,  Igor Anilovich ,  Robert J. Sutschek ,  Jeffrey F. Loo

    IPC: F01N3/20 ,  B01D53/94

    CPC classification number: F01N3/208 ,  B01D53/90 ,  B01D53/9418 ,  B01D53/9431 ,  B01D53/9495 ,  B01D2251/2067 ,  B01D2257/404 ,  B01D2258/012 ,  F01N3/2066 ,  F01N2550/05 ,  F01N2610/02 ,  F01N2610/1406 ,  F01N2900/1818 ,  Y02A50/2325 ,  Y02T10/24

    Abstract: A dosing control system for an exhaust system includes: a reductant fluid tank operable to contain a reductant solution comprising urea; an injector disposed in operable communication between a reductant tank and an SCR apparatus, the injector being operable to inject the reductant solution from the reductant tank into a flow of exhaust upstream of the SCR apparatus; a urea quality sensor (UQS) configured and disposed to sense a concentration of the urea in the reductant solution; and, a control module disposed in signal communication with the UQS and in operable communication with the injector, the control module being operable to adjust a dosing of the reductant solution injected by the injector based on a concentration of the urea in the reductant solution.

    Abstract translation: 用于排气系统的计量控制系统包括：还原剂流体箱，可操作以容纳包含尿素的还原剂溶液; 所述喷射器设置成在还原剂罐和SCR装置之间可操作地连通，所述喷射器可操作以将还原剂溶液从所述还原剂罐注入到SCR装置上游的排气流中; 尿素质量传感器（UQS），其配置和设置为感测所述还原剂溶液中的尿素浓度; 以及控制模块，其设置为与所述UQS信号通信并且与所述注射器可操作地连通，所述控制模块可操作以基于所述还原剂溶液中所述尿素的浓度来调节由所述注射器注入的还原剂溶液的计量。

    REGENERATION SYSTEM TO REGENERATE A PARTICULATE FILTER BASED ON CODE CLEAR DIAGNOSTIC SIGNAL
    16.
    发明申请
    REGENERATION SYSTEM TO REGENERATE A PARTICULATE FILTER BASED ON CODE CLEAR DIAGNOSTIC SIGNAL 有权
    基于代码清晰度诊断信号重新生成粒子滤波器的再生系统

    公开(公告)号：US20150068193A1

    公开(公告)日：2015-03-12

    申请号：US14022918

    申请日：2013-09-10

    Applicant: GM Global Technology Operations LLC

    Inventor： Janean E. Kowalkowski ,  Benjamin Radke ,  Vincent J. Tylutki

    IPC: F01N3/021

    CPC classification number: F01N3/021 ,  F01N3/0253 ,  F01N3/2066 ,  F01N9/002 ,  F01N11/00 ,  F01N13/009 ,  F01N2550/04 ,  F01N2900/1606 ,  Y02T10/47

    Abstract: An exhaust treatment system includes a particulate filter having a filter substrate configured to trap soot contained in exhaust gas. A regeneration system is configured to perform a regeneration operation that regenerates the particulate filter by burning away soot stored in the filter substrate. A control module is in electrical communication with the regeneration system to generate a first control signal that initiates the regeneration operation based on a comparison between at least one operating condition of the exhaust treatment system and a threshold value. The control module generates a second control signal in response to detecting at least one diagnostic signal. The second control signal initiates the regeneration operation independently of the comparison.

    Abstract translation: 排气处理系统包括具有被配置为捕集废气中所含的烟灰的过滤器基板的微粒过滤器。 再生系统被配置为执行再生操作，其通过燃烧存储在过滤器基板中的烟灰来再生微粒过滤器。 控制模块与再生系统电连通以产生基于废气处理系统的至少一个操作条件与阈值之间的比较来启动再生操作的第一控制信号。 响应于检测到至少一个诊断信号，控制模块产生第二控制信号。 第二控制信号独立于比较启动再生操作。

    METHOD AND SYSTEM FOR INITIATING AN ENGINE AFTER-RUN STATE AND CONTROLLING A NITROGEN OXIDE SENSOR SELF-DIAGNOSTIC TOOL
    17.
    发明申请
    METHOD AND SYSTEM FOR INITIATING AN ENGINE AFTER-RUN STATE AND CONTROLLING A NITROGEN OXIDE SENSOR SELF-DIAGNOSTIC TOOL 有权
    用于启动发动机后运行状态和控制氮氧化物传感器自诊断工具的方法和系统

    公开(公告)号：US20140144126A1

    公开(公告)日：2014-05-29

    申请号：US13688347

    申请日：2012-11-29

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Janean E. Kowalkowski ,  John David Barta ,  Scott McLane ,  Marek L. Wilmanowicz ,  Benjamin Radke ,  Jason J. Chung

    IPC: F01N9/00

    CPC classification number: F01N9/002 ,  F01N3/208 ,  F01N11/00 ,  F01N2560/026 ,  F01N2560/14 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

    Abstract: A system and method for initiating an engine after-run state and controlling a nitrogen oxide sensor self-diagnostic tool are provided. The system may include an internal combustion engine, an exhaust system, a selective catalytic reduction (SCR) device and at least two NOx sensors to measure the efficiency of the SCR device and a controller or host machine. The controller, via the present method, executes a first control action to disable the self-diagnostic tool when one of an occurrence of a particulate filter regeneration event and a non-occurrence of a calibration threshold is detected. The controller executes a second control action, initiating an engine after-run state and enabling the self-diagnostic tool when one of a non-occurrence of a particulate filter regeneration event and an occurrence of the calibration threshold is detected.

    Abstract translation: 提供了用于启动发动机运行后状态并控制氮氧化物传感器自诊断工具的系统和方法。 该系统可以包括内燃机，排气系统，选择性催化还原（SCR）装置和至少两个NOx传感器，以测量SCR装置和控制器或主机的效率。 当检测到微粒过滤器再生事件的发生和校准阈值的不发生时，通过本方法，控制器执行第一控制动作以禁用自诊断工具。 控制器执行第二控制动作，启动发动机运行后状态，并且当检测到不发生微粒过滤器再生事件和出现校准阈值时，启动自诊断工具。

    Method and system for selectively enabling and disabling a diagnostic monitor of a selective-catalytic-reduction device
    19.
    发明授权
    Method and system for selectively enabling and disabling a diagnostic monitor of a selective-catalytic-reduction device 有权
    用于选择性地启用和禁用选择性催化还原装置的诊断监测器的方法和系统

    公开(公告)号：US09376952B2

    公开(公告)日：2016-06-28

    申请号：US13905473

    申请日：2013-05-30

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Janean E. Kowalkowski ,  Timothy J. Holbert

    IPC: F01N11/00 ,  F01N3/20 ,  F01N9/00

    CPC classification number: F01N11/002 ,  F01N3/2066 ,  F01N9/002 ,  F01N11/00 ,  F01N2550/02 ,  F01N2900/08 ,  F01N2900/1606 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/47

    Abstract: A vehicle that includes an engine, an exhaust system, and a controller, and a method are disclosed herein. The exhaust system includes a passage for directing the exhaust gas stream from the engine through the series of exhaust after-treatment devices, including a selective-catalytic reduction device and a diesel particulate filter (DPF). The exhaust after-treatment devices are employed to reduce various exhaust emissions of the engine. The exhaust system, may however, prematurely return failing emissions results due to the amount of contaminants that have flowed through the exhaust system since the last regeneration even of the particulate filter. Therefore, the controller may, via the present method, alter the threshold of the SCR efficiency diagnostic due to contaminants accumulated on the DPF and selectively enable or disable the diagnostic based on a set of recorded instructions, to improve the robustness of the SCR efficiency diagnostic and prevent inaccurate failing emissions results.

    Abstract translation: 本文公开了包括发动机，排气系统和控制器的车辆以及方法。 排气系统包括用于引导来自发动机的废气流通过包括选择性催化还原装置和柴油微粒过滤器（DPF）的一系列排气后处理装置的通道。 排气后处理装置用于减少发动机的各种废气排放。 然而，排气系统可能由于微粒过滤器的最后一次再生而由于排出系统中流过的污染物的量而过早地返回故障排放结果。 因此，控制器可以通过本方法改变由于在DPF上积聚的污染物而导致的SCR效率诊断的阈值，并且基于一组记录的指令选择性地启用或禁用诊断，以提高SCR效率诊断的鲁棒性 并防止不正确的失效排放结果。

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