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公开(公告)号：US20110265453A1
公开(公告)日：2011-11-03
申请号：US13106138
申请日：2011-05-12
CPC分类号： F01N3/0842 , F01N13/011 , F02B29/0412 , F02B37/007 , F02B37/16 , F02B37/18 , F02D17/02 , F02D41/0002 , F02D41/0007 , F02D41/0055 , F02D41/0087 , F02D41/0235 , F02D41/027 , F02D2200/0802 , F02D2250/14 , F02M26/08 , F02M26/38 , Y02T10/146 , Y02T10/42
摘要： Methods and systems are provided for selecting a group of cylinders for selective deactivation, in a variable displacement engine system, based at least on a regeneration state of an exhaust catalyst. The position of one or more valves and throttles may be adjusted based on the selective deactivation to reduce back-flow through the disabled cylinders while also maintaining conditions of a downstream exhaust catalyst. Pre-ignition and knock detection windows and thresholds may also be adjusted based on the deactivation to improve the efficiency of knock and pre-ignition detection.
摘要翻译： 提供了用于在可变排量发动机系统中至少基于废气催化剂的再生状态来选择用于选择性停用的一组气缸的方法和系统。 一个或多个阀门和节流阀的位置可以根据选择性停用来调节，以减少通过禁用气缸的回流，同时还保持下游排气催化剂的条件。 也可以基于去激活来调整预点火和爆震检测窗口和阈值，以提高爆震和预点火检测的效率。
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公开(公告)号：US20070256406A1
公开(公告)日：2007-11-08
申请号：US11742806
申请日：2007-05-01
CPC分类号： F01N11/007 , Y02T10/47
摘要： A system and method for engine control and diagnostics are described. The engine system may include an engine having a catalyst in the exhaust system, the exhaust system further having an exhaust gas oxygen sensor upstream of the catalyst and downstream of the catalyst. In one example, the method may include during a first operating mode in which catalyst diagnostics are not carried out, adjusting air-fuel ratio based on both the upstream and downstream exhaust gas oxygen sensors, where air-fuel ratio adjustment responsiveness to the downstream sensor is reduced as the catalyst performance degrades; and during a second operating mode that includes catalyst diagnostics, adjusting air-fuel ratio based on at least the downstream exhaust gas oxygen sensor, where said air-fuel ratio adjustment responsiveness to the downstream sensor is temporarily increased from said reduction generated during the first operating mode.
摘要翻译： 描述了用于发动机控制和诊断的系统和方法。 发动机系统可以包括在排气系统中具有催化剂的发动机，排气系统还在催化剂的上游和催化剂的下游还具有排气氧传感器。 在一个示例中，该方法可以包括在不执行催化剂诊断的第一操作模式中，基于上游和下游排气氧传感器调节空燃比，其中空燃比调节对下游传感器的响应性 随着催化剂性能的降低而降低; 并且在包括催化剂诊断的第二操作模式期间，至少基于下游废气氧传感器调节空燃比，其中所述下游传感器的空燃比调整响应性暂时从第一操作期间产生的所述减小暂时增加 模式。
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公开(公告)号：US09163588B2
公开(公告)日：2015-10-20
申请号：US13045025
申请日：2011-03-10
申请人： Gopichandra Surnilla , Imad Hassan Makki , James Michael Kerns , Robert Roy Jentz , Timothy Joseph Clark , Michael James Uhrich , Richard E. Soltis
发明人： Gopichandra Surnilla , Imad Hassan Makki , James Michael Kerns , Robert Roy Jentz , Timothy Joseph Clark , Michael James Uhrich , Richard E. Soltis
CPC分类号： F02M26/08 , F02D41/0002 , F02D41/005 , F02D41/0077 , F02D41/222 , F02D2200/0418 , F02M26/14 , F02M26/17 , F02M26/24 , F02M26/38 , F02M26/45 , F02M26/47 , Y02T10/47
摘要： Methods and systems are provided for an engine including a humidity sensor. Degradation of the humidity sensor may be determined based on a change in intake air relative humidity as compared to a change in intake air temperature or pressure, under selected conditions. An amount of exhaust gas recirculated to an engine intake is adjusted differently based on whether the humidity sensor is degraded or functional.
摘要翻译： 为包括湿度传感器的发动机提供方法和系统。 在选择的条件下，与进气温度或压力的变化相比，可以基于进气空气相对湿度的变化来确定湿度传感器的降级。 再循环到发动机进气口的废气量根据湿度传感器的劣化或功能而不同地进行调节。
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公开(公告)号：US08881713B2
公开(公告)日：2014-11-11
申请号：US13045123
申请日：2011-03-10
申请人： Gopichandra Surnilla , Imad Hassan Makki , Michael James Uhrich , Timothy Joseph Clark , James Michael Kerns , Robert Roy Jentz
发明人： Gopichandra Surnilla , Imad Hassan Makki , Michael James Uhrich , Timothy Joseph Clark , James Michael Kerns , Robert Roy Jentz
CPC分类号： F02D41/222 , F02D41/005 , F02D41/0065 , F02D41/0245 , F02D41/064 , F02D2200/0414 , F02D2200/0418 , F02M26/07 , F02M26/14 , F02M26/42 , F02M26/45 , Y02T10/26
摘要： Methods and systems are provided for an engine including a humidity sensor. Degradation of the humidity sensor may be determined based on a change in intake air relative humidity as compared to a change in intake air temperature or pressure, under selected conditions. An amount of exhaust gas recirculated to an engine intake is adjusted differently based on whether the humidity sensor is degraded or functional.
摘要翻译： 为包括湿度传感器的发动机提供方法和系统。 在选择的条件下，与进气温度或压力的变化相比，可以基于进气空气相对湿度的变化来确定湿度传感器的降级。 再循环到发动机进气口的废气量根据湿度传感器的劣化或功能而不同地进行调节。
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公开(公告)号：US08862370B2
公开(公告)日：2014-10-14
申请号：US13565454
申请日：2012-08-02
申请人： Joseph Robert Theis , James Michael Kerns , Michael James Uhrich , Giovanni Cavataio , Thomas G. Leone , Jeffrey Allen Doering , Todd Anthony Rumpsa
发明人： Joseph Robert Theis , James Michael Kerns , Michael James Uhrich , Giovanni Cavataio , Thomas G. Leone , Jeffrey Allen Doering , Todd Anthony Rumpsa
IPC分类号： F02D41/26
CPC分类号： C12Q1/6806 , F01N3/101 , F01N3/2066 , F01N13/0093 , F01N13/011 , F02D41/0087 , F02D41/0235 , F02D41/027 , F02D41/042 , F02D41/126 , F02N11/0818 , Y02A50/2324 , Y02A50/2325 , Y02T10/22 , C12Q2521/125 , C12Q2521/301
摘要： Methods and systems are provided for improving engine exhaust emissions while enabling exhaust catalyst regeneration following an engine lean event. Prior to a VDE event, or prior to an engine idle-stop, ammonia is produced and stored on an exhaust underbody SCR catalyst. Then, during the engine restart after the VDE mode or the idle-stop, the stored ammonia is used to treat exhaust NOx species while an upstream exhaust underbody three-way catalyst is regenerated.
摘要翻译： 提供了用于改善发动机废气排放的方法和系统，同时在发动机精馏事件之后实现排气催化剂再生。 在VDE事件之前或在发动机怠速停止之前，产生氨并将其存储在排气底体SCR催化剂上。 然后，在VDE模式或怠速停止之后的发动机重起期间，储存的氨被用于处理废气NOx物质，同时再生上游废气体内三元催化剂。
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公开(公告)号：US08775011B2
公开(公告)日：2014-07-08
申请号：US13089026
申请日：2011-04-18
申请人： Imad Hassan Makki , James Michael Kerns , Timothy Joseph Clark , Robert Roy Jentz , Michael James Uhrich
发明人： Imad Hassan Makki , James Michael Kerns , Timothy Joseph Clark , Robert Roy Jentz , Michael James Uhrich
CPC分类号： F01N11/007 , B60T8/885 , B60T13/52 , B60T17/02 , F01L1/46 , F01N2240/36 , F02B29/0406 , F02B37/16 , F02B37/18 , F02D41/00 , F02D41/144 , F02D41/1458 , F02D41/1495 , F02M26/06 , F02M26/10 , F02M26/15 , F02M26/23 , F02M26/46 , F02M26/49 , Y02T10/144
摘要： A diagnostic method for an engine having a valve for controlling dilution of intake air. The method comprises, during engine fueling, indicating a degradation of the valve when the valve is commanded closed but sensor output corresponds to an oxygen level below that of air. The method further comprises, absent engine fueling, indicating degradation of the sensor when the valve is commanded closed but the sensor output corresponds to an oxygen level below that of air.
摘要翻译： 一种具有用于控制进气稀释的阀的发动机的诊断方法。 该方法包括在发动机加油期间，当阀被命令关闭时，指示阀的劣化，但传感器输出对应于低于空气的氧气水平。 该方法还包括：当发动机燃料加注时，指示当阀被命令关闭时传感器的劣化，但是传感器输出对应于低于空气的氧气水平。
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57.发明申请公开(公告)号：US20130245919A1
公开(公告)日：2013-09-19
申请号：US13424208
申请日：2012-03-19
申请人： Pankaj Kumar , Imad Hassan Makki , James Michael Kerns , Michael James Uhrich , Stephen B. Smith
发明人： Pankaj Kumar , Imad Hassan Makki , James Michael Kerns , Michael James Uhrich , Stephen B. Smith
CPC分类号： F02D41/0235 , F01N11/007 , F01N2550/02 , F01N2560/025 , F01N2560/14 , F01N2900/1402 , F01N2900/1621 , F01N2900/1624 , F02D41/0295 , F02D41/1441 , F02D41/1454 , F02D41/1456 , F02D41/1458 , F02D41/182 , F02D2200/0814 , F02D2200/0816 , Y02T10/22 , Y02T10/47
摘要： Embodiments for an engine exhaust are provided. In one example, a method comprises adjusting a fuel injection amount based on a fractional oxidation state of a catalyst, the fractional oxidation state based on reaction rates of a plurality of exhaust gas species throughout a catalyst longitudinal axis and a set of axially-averaged mass balance and energy balance equations for a fluid phase and a washcoat of the catalyst. In this way, a simplified catalyst model may be used to control air-fuel ratio.
摘要翻译： 提供了用于发动机排气的实施例。 在一个实例中，一种方法包括基于催化剂的分数氧化态调节燃料喷射量，基于多个排气物质在催化剂纵向轴线上的反应速率和一组轴向平均质量的分数氧化态 平衡和能量平衡方程，用于催化剂的流体相和修补基面涂层。 以这种方式，可以使用简化的催化剂模型来控制空燃比。
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公开(公告)号：US20120265396A1
公开(公告)日：2012-10-18
申请号：US13089026
申请日：2011-04-18
申请人： Imad Hassan Makki , James Michael Kerns , Timothy Joseph Clark , Robert Roy Jentz , Michael James Uhrich
发明人： Imad Hassan Makki , James Michael Kerns , Timothy Joseph Clark , Robert Roy Jentz , Michael James Uhrich
IPC分类号： G06F19/00
CPC分类号： F01N11/007 , B60T8/885 , B60T13/52 , B60T17/02 , F01L1/46 , F01N2240/36 , F02B29/0406 , F02B37/16 , F02B37/18 , F02D41/00 , F02D41/144 , F02D41/1458 , F02D41/1495 , F02M26/06 , F02M26/10 , F02M26/15 , F02M26/23 , F02M26/46 , F02M26/49 , Y02T10/144
摘要： A diagnostic method for an engine having a valve for controlling dilution of intake air. The method comprises, during engine fueling, indicating a degradation of the valve when the valve is commanded closed but sensor output corresponds to an oxygen level below that of air. The method further comprises, absent engine fueling, indicating degradation of the sensor when the valve is commanded closed but the sensor output corresponds to an oxygen level below that of air.
摘要翻译： 一种具有用于控制进气稀释的阀的发动机的诊断方法。 该方法包括在发动机加油期间，当阀被命令关闭时，指示阀的劣化，但传感器输出对应于低于空气的氧气水平。 该方法还包括：当发动机燃料供给不足时，指示当阀被命令关闭但传感器输出对应于低于空气的氧气水平时传感器的劣化。
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公开(公告)号：US20110265771A1
公开(公告)日：2011-11-03
申请号：US13106213
申请日：2011-05-12
IPC分类号： F02B33/00
CPC分类号： F02B37/007 , F01N3/0814 , F01N3/0842 , F02B29/0412 , F02B37/001 , F02B37/002 , F02D9/02 , F02D11/10 , F02D17/02 , F02D35/027 , F02D41/0007 , F02D41/0055 , F02D41/0087 , F02D41/0275 , F02D41/0295 , F02D41/38 , F02D2041/002 , F02D2200/0802 , F02D2250/26 , F02M26/08 , F02M26/24 , F02M26/42 , Y02T10/14 , Y02T10/144 , Y02T10/146 , Y02T10/47
摘要： Methods and systems are provided for selecting a group of cylinders for selective deactivation, in a variable displacement engine system, based at least on a regeneration state of an exhaust catalyst. The position of one or more valves and throttles may be adjusted based on the selective deactivation to reduce back-flow through the disabled cylinders while also maintaining conditions of a downstream exhaust catalyst. Pre-ignition and knock detection windows and thresholds may also be adjusted based on the deactivation to improve the efficiency of knock and pre-ignition detection.
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公开(公告)号：US09222420B2
公开(公告)日：2015-12-29
申请号：US13565490
申请日：2012-08-02
申请人： James Michael Kerns , Joseph Robert Theis , Todd Anthony Rumpsa , Michael James Uhrich , Adam Nathan Banker , Stephen B. Smith
发明人： James Michael Kerns , Joseph Robert Theis , Todd Anthony Rumpsa , Michael James Uhrich , Adam Nathan Banker , Stephen B. Smith
CPC分类号： F02D17/02 , F01N3/101 , F01N3/2066 , F01N13/009 , F01N13/011 , F02D41/0087 , F02D41/0235 , F02D41/027 , Y02T10/22
摘要： Methods and systems are provided for improving engine exhaust emissions while enabling exhaust catalyst regeneration following an engine lean event. Prior to a VDE event, or prior to an engine idle-stop, ammonia is produced and stored on an exhaust underbody SCR catalyst. Then, during the engine restart after the VDE mode or the idle-stop, the stored ammonia is used to treat exhaust NOx species while an upstream exhaust underbody three-way catalyst is regenerated.
摘要翻译： 提供了用于改善发动机废气排放的方法和系统，同时在发动机精馏事件之后实现排气催化剂再生。 在VDE事件之前或在发动机怠速停止之前，产生氨并将其存储在排气底体SCR催化剂上。 然后，在VDE模式或怠速停止之后的发动机重起期间，储存的氨被用于处理废气NOx物质，同时再生上游废气体内三元催化剂。
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