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公开(公告)号：US08683786B2
公开(公告)日：2014-04-01
申请号：US13615278
申请日：2012-09-13
IPC分类号： F01N3/00
CPC分类号： F01N9/00 , F01N3/023 , F01N3/32 , F01N2560/025 , F01N2560/06 , F02B37/00 , F02D13/0215 , F02D19/0655 , F02D41/0055 , F02D41/029 , F02D41/1439 , F02M26/01 , F02M26/05 , F02M26/06 , F02M26/15 , F02M26/24 , F02M26/46 , F02M26/47 , Y02T10/144 , Y02T10/22 , Y02T10/36 , Y02T10/47
摘要： A method for operating a spark-ignition engine having a three-way catalyst and a particulate filter downstream thereof, comprising: oscillating an exhaust air-fuel ratio entering the particulate filter to generate air-fuel ratio oscillations downstream of the particulate filter, while increasing exhaust temperature; when the downstream oscillations are sufficiently dissipated, enleaning the exhaust air-fuel ratio entering the particulate filter; and reducing the enleanment when an exhaust operating parameter is beyond a threshold amount.
摘要翻译： 一种用于操作具有三元催化剂和其下游的颗粒过滤器的火花点火发动机的方法，包括：使进入所述颗粒过滤器的排气空燃比振荡，以在颗粒过滤器的下游产生空燃比振荡，同时增加 排气温度; 当下游振荡充分消散时，消除进入微粒过滤器的排气空燃比; 并且当排气操作参数超过阈值量时减少净化。
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公开(公告)号：US20140010744A1
公开(公告)日：2014-01-09
申请号：US13542598
申请日：2012-07-05
IPC分类号： B01D53/94
CPC分类号： F01N3/208 , F01N9/00 , F01N13/02 , F01N2410/00 , F01N2560/023 , F01N2900/1402 , Y02A50/2325 , Y02T10/24 , Y02T10/47
摘要： Methods and systems for improving operation of an SCR are disclosed. In one example, engine hydrocarbon emissions are reduced and/or directed to bypass an SCR so that SCR efficiency can be increased. The methods and systems may reduce NOx emissions of a vehicle via improving SCR efficiency.
摘要翻译： 公开了用于改善SCR操作的方法和系统。 在一个示例中，发动机碳氢化合物排放被减少和/或引导以旁路SCR，从而可以提高SCR效率。 所述方法和系统可以通过提高SCR效率来减少车辆的NOx排放。
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公开(公告)号：US20130008162A1
公开(公告)日：2013-01-10
申请号：US13615278
申请日：2012-09-13
CPC分类号： F01N9/00 , F01N3/023 , F01N3/32 , F01N2560/025 , F01N2560/06 , F02B37/00 , F02D13/0215 , F02D19/0655 , F02D41/0055 , F02D41/029 , F02D41/1439 , F02M26/01 , F02M26/05 , F02M26/06 , F02M26/15 , F02M26/24 , F02M26/46 , F02M26/47 , Y02T10/144 , Y02T10/22 , Y02T10/36 , Y02T10/47
摘要： A method for operating a spark-ignition engine having a three-way catalyst and a particulate filter downstream thereof, comprising: oscillating an exhaust air-fuel ratio entering the particulate filter to generate air-fuel ratio oscillations downstream of the particulate filter, while increasing exhaust temperature; when the downstream oscillations are sufficiently dissipated, enleaning the exhaust air-fuel ratio entering the particulate filter; and reducing the enleanment when an exhaust operating parameter is beyond a threshold amount.
摘要翻译： 一种用于操作具有三元催化剂和其下游的颗粒过滤器的火花点火发动机的方法，包括：使进入所述颗粒过滤器的排气空燃比振荡，以在颗粒过滤器的下游产生空燃比振荡，同时增加 排气温度; 当下游振荡充分消散时，消除进入微粒过滤器的排气空燃比; 并且当排气操作参数超过阈值量时减少净化。
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公开(公告)号：US20120192548A1
公开(公告)日：2012-08-02
申请号：US13429125
申请日：2012-03-23
申请人： Furqan Zafar Shaikh , John Paul Bogema , Michiel J. Van Nieuwstadt , Scott Donald Cooper , Garry Anthony Zawacki , Jacobus Hendrik Visser , William Charles Ruona , Timothy Webb , Ed Kulik , David K. Chen
发明人： Furqan Zafar Shaikh , John Paul Bogema , Michiel J. Van Nieuwstadt , Scott Donald Cooper , Garry Anthony Zawacki , Jacobus Hendrik Visser , William Charles Ruona , Timothy Webb , Ed Kulik , David K. Chen
IPC分类号： F01N11/00
CPC分类号： F01N3/208 , F01N9/00 , F01N2560/026 , F01N2570/145 , F01N2610/1406 , F01N2610/146 , F01N2900/12 , F01N2900/1814 , Y02A50/2325 , Y02C20/10 , Y02T10/24 , Y02T10/47
摘要： A method of operating an internal combustion engine having a reductant delivery and storage system in an emission control system, comprising of correlating a change in a monitored operating condition with a refill event to determine whether a reductant-diluting substance has been added to the reductant storage system; and limiting vehicle operation based on the correlation.
摘要翻译： 一种在排放控制系统中操作具有还原剂输送和储存系统的内燃机的方法，包括将监测的运行状态的变化与再填充事件相关联，以确定还原剂稀释物质是否已添加到还原剂储存器 系统; 并基于相关性限制车辆操作。
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公开(公告)号：US08141346B2
公开(公告)日：2012-03-27
申请号：US11669739
申请日：2007-01-31
申请人： Furqan Zafar Shaikh , John Paul Bogema , Michiel J. Van Nieuwstadt , Scott Donald Cooper , Garry Anthony Zawacki , Jacobus Hendrik Visser , William Charles Ruona , Timothy Webb , Ed Kulik , David K. Chen
发明人： Furqan Zafar Shaikh , John Paul Bogema , Michiel J. Van Nieuwstadt , Scott Donald Cooper , Garry Anthony Zawacki , Jacobus Hendrik Visser , William Charles Ruona , Timothy Webb , Ed Kulik , David K. Chen
IPC分类号： F01N3/00
CPC分类号： F01N3/208 , F01N9/00 , F01N2560/026 , F01N2570/145 , F01N2610/1406 , F01N2610/146 , F01N2900/12 , F01N2900/1814 , Y02A50/2325 , Y02C20/10 , Y02T10/24 , Y02T10/47
摘要： A method of operating an internal combustion engine having a reductant delivery and storage system in an emission control system, comprising of correlating a change in a monitored operating condition with a refill event to determine whether a reductant-diluting substance has been added to the reductant storage system; and limiting vehicle operation based on the correlation.
摘要翻译： 一种在排放控制系统中操作具有还原剂输送和储存系统的内燃机的方法，包括将监测的运行状态的变化与再填充事件相关联，以确定还原剂稀释物质是否已添加到还原剂储存器 系统; 并基于相关性限制车辆操作。
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公开(公告)号：US08136343B2
公开(公告)日：2012-03-20
申请号：US12643563
申请日：2009-12-21
申请人： Garry Anthony Zawacki , Robert F. Novak , Roberto Teran, Jr. , Dave Charles Weber , Michiel J. Van Nieuwstadt , Michael Hopka , William Charles Ruona
发明人： Garry Anthony Zawacki , Robert F. Novak , Roberto Teran, Jr. , Dave Charles Weber , Michiel J. Van Nieuwstadt , Michael Hopka , William Charles Ruona
IPC分类号： F01N3/00
CPC分类号： G01N33/0006 , F01N2560/05 , F02D41/1494 , F02D41/222 , G01N15/0656 , Y02T10/40
摘要： A system for improving operation of an engine having a particulate matter sensor is presented. The system may be used to improve engine operation during cold starts especially under conditions where water vapor or entrained water droplets are present in vehicle exhaust gases. In one embodiment, an engine controller that activates a heater of an exhaust gas sensor after an output of a particulate matter sensor exceeds a threshold value after an engine is started.
摘要翻译： 提出了一种用于改善具有颗粒物质传感器的发动机的操作的系统。 该系统可用于在冷启动期间改善发动机运行，特别是在车辆废气中存在水蒸气或夹带水滴的情况下。 在一个实施例中，在发动机起动之后，在颗粒物质传感器的输出超过阈值之后激活排气传感器的加热器的发动机控制器。
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公开(公告)号：US20110047985A1
公开(公告)日：2011-03-03
申请号：US12643563
申请日：2009-12-21
申请人： Garry Anthony Zawacki , Robert F. Novak , Roberto Teran, Jr. , Dave Charles Weber , Michiel J. Van Nieuwstadt , Michael Hopka , William Charles Ruona
发明人： Garry Anthony Zawacki , Robert F. Novak , Roberto Teran, Jr. , Dave Charles Weber , Michiel J. Van Nieuwstadt , Michael Hopka , William Charles Ruona
CPC分类号： G01N33/0006 , F01N2560/05 , F02D41/1494 , F02D41/222 , G01N15/0656 , Y02T10/40
摘要： A system for improving operation of an engine having a particulate matter sensor is presented. The system may be used to improve engine operation during cold starts especially under conditions where water vapor or entrained water droplets are present in vehicle exhaust gases. In one embodiment, an engine controller that activates a heater of an exhaust gas sensor after an output of a particulate matter sensor exceeds a threshold value after an engine is started.
摘要翻译： 提出了一种用于改善具有颗粒物质传感器的发动机的操作的系统。 该系统可用于在冷启动期间改善发动机运行，特别是在车辆废气中存在水蒸气或夹带水滴的情况下。 在一个实施例中，在发动机起动之后，在颗粒物质传感器的输出超过阈值之后激活排气传感器的加热器的发动机控制器。
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公开(公告)号：US20110137542A1
公开(公告)日：2011-06-09
申请号：US12765081
申请日：2010-04-22
CPC分类号： F02D41/1439 , F02D9/04 , F02D41/0065 , F02D41/1408 , F02D41/146 , F02D41/1466 , F02M26/05 , F02M26/06 , F02M26/15 , F02M26/24 , Y02T10/47
摘要： A method of operating an engine system is described in which a back-pressure valve of a low pressure EGR system can be modulated at a lower frequency during an EGR operation, and at a higher frequency when additional exhaust gas sensing is requested. Back-pressure valve modulation can therefore be used to promote exhaust gas mixing while providing EGR. Exhaust gas constituents in the mixed exhaust gas can then be sensed with higher accuracy by downstream exhaust gas sensors.
摘要翻译： 描述了一种操作发动机系统的方法，其中在EGR操作期间可以以较低的频率调制低压EGR系统的背压阀，并且在需要额外的废气感测时以较高的频率进行调节。 因此，背压阀调节可用于在提供EGR时促进排气混合。 然后可以通过下游排气传感器以更高的精度感测混合废气中的废气成分。
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公开(公告)号：US08448511B2
公开(公告)日：2013-05-28
申请号：US12643575
申请日：2009-12-21
申请人： Garry Anthony Zawacki , Robert F. Novak , Roberto Teran, Jr. , Dave Charles Weber , Michiel J. Van Nieuwstadt , Michael Hopka , William Charles Ruona
发明人： Garry Anthony Zawacki , Robert F. Novak , Roberto Teran, Jr. , Dave Charles Weber , Michiel J. Van Nieuwstadt , Michael Hopka , William Charles Ruona
IPC分类号： G01N27/12
CPC分类号： G01N33/0006 , F01N2560/05 , F02D41/1494 , F02D41/222 , G01N15/0656 , Y02T10/40
摘要： A system for improving operation of an engine having a particulate matter sensor is presented. The system may be used to improve engine operation during cold starts especially under conditions where water vapor or entrained water droplets are present in vehicle exhaust gases. In one embodiment, particulate sensor degradation is indicated in response to an output of said particulate matter sensor staying below a threshold as engine temperature increases past the dewpoint temperature.
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公开(公告)号：US07945377B1
公开(公告)日：2011-05-17
申请号：US12765081
申请日：2010-04-22
CPC分类号： F02D41/1439 , F02D9/04 , F02D41/0065 , F02D41/1408 , F02D41/146 , F02D41/1466 , F02M26/05 , F02M26/06 , F02M26/15 , F02M26/24 , Y02T10/47
摘要： A method of operating an engine system is described in which a back-pressure valve of a low pressure EGR system can be modulated at a lower frequency during an EGR operation, and at a higher frequency when additional exhaust gas sensing is requested. Back-pressure valve modulation can therefore be used to promote exhaust gas mixing while providing EGR. Exhaust gas constituents in the mixed exhaust gas can then be sensed with higher accuracy by downstream exhaust gas sensors.
摘要翻译： 描述了一种操作发动机系统的方法，其中在EGR操作期间可以以较低的频率调制低压EGR系统的背压阀，并且在需要额外的废气感测时以较高的频率进行调节。 因此，背压阀调节可用于在提供EGR时促进排气混合。 然后可以通过下游排气传感器以更高的精度感测混合废气中的废气成分。
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