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    Catalyst preconditioning method and system
    2.
    发明授权
    Catalyst preconditioning method and system 有权
    催化剂预处理方法和系统

    公开(公告)号：US06945033B2

    公开(公告)日：2005-09-20

    申请号：US10604100

    申请日：2003-06-26

    申请人： Brent Edward Sealy ,  Donald James Lewis ,  Kenneth John Behr ,  Thomas Raymond Culbertson

    发明人： Brent Edward Sealy ,  Donald James Lewis ,  Kenneth John Behr ,  Thomas Raymond Culbertson

    IPC分类号： F02D41/02 ,  F02D41/14 ,  F01N3/00

    CPC分类号： F02D41/1441 ,  F02D41/0295

    摘要： Method and system for controlling an internal combustion engine of a vehicle where a catalyst is communicated to engine exhaust gases including predicting occurrence of an impending engine operating event that will change an exhaust constituent in the engine exhaust gases, determining an oxygen content of exhaust gases downstream of the catalyst, and adjusting an air-fuel ratio of the engine based on the determined oxygen content and the predicted engine operating event to precondition the catalyst prior to occurrence of the particular event.

    摘要翻译： 用于控制车辆的内燃机的方法和系统，其中催化剂与发动机排气连通，包括预测将发生即将发生的发动机操作事件的发生，其将改变发动机废气中的排气成分，确定下游的排气的氧含量 的催化剂，并且基于所确定的氧含量和预测的发动机操作事件来调节发动机的空燃比，以在特定事件发生之前预处理催化剂。

    Method for selecting a cylinder group when changing an engine operational parameter
    3.
    发明授权
    Method for selecting a cylinder group when changing an engine operational parameter 有权
    改变发动机运行参数时选择气缸组的方法

    公开(公告)号：US06553756B1

    公开(公告)日：2003-04-29

    申请号：US09785361

    申请日：2001-02-16

    申请人： Brent Edward Sealy ,  Kenneth John Behr ,  Richard Andrew Booth

    发明人： Brent Edward Sealy ,  Kenneth John Behr ,  Richard Andrew Booth

    IPC分类号： F01N300

    CPC分类号： F02D41/0087 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/011 ,  F02D41/1443 ,  F02D41/1456 ,  F02D41/1474 ,  F02D41/1481 ,  F02D41/1482 ,  F02D41/187 ,  F02D2200/0406 ,  Y02T10/22

    摘要： A method for selecting one of first and second cylinder groups of an internal combustion engine is provided. The first and second cylinder groups are coupled with first and second catalytic converters, respectively. The method includes identifying one of the first and second catalytic converters by comparing first and second catalyst parameters, associated with the first and second catalytic converters, respectively, to one another. The first and second catalyst parameters indicate which one of the catalytic converters is more capable of maintaining reduced emissions while adjusting an engine operational parameter. The method further includes selecting one of the first and second cylinder groups coupled to the identified catalytic converter for changing an engine operational parameter in the selected cylinder group.

    摘要翻译： 提供一种用于选择内燃机的第一和第二气缸组中的一个的方法。 第一和第二气缸组分别与第一和第二催化转化器耦合。 该方法包括通过将与第一和第二催化转化器相关联的第一和第二催化剂参数彼此比较来识别第一和第二催化转化器中的一个。 第一和第二催化剂参数指示哪个催化转化器在调整发动机操作参数的同时更能够维持减少的排放。 该方法还包括选择与所识别的催化转化器相连的第一和第二气缸组中的一个，以改变所选气缸组中的发动机操作参数。

    Diagnostic system for detecting catalyst failure using switch ratio
    4.
    发明授权
    Diagnostic system for detecting catalyst failure using switch ratio 有权
    使用开关比检测催化剂故障的诊断系统

    公开(公告)号：US06467254B1

    公开(公告)日：2002-10-22

    申请号：US09488932

    申请日：2000-01-20

    申请人： Michael John Cullen ,  Brent Edward Sealy ,  Kenneth John Behr ,  Richard Andrew Booth

    发明人： Michael John Cullen ,  Brent Edward Sealy ,  Kenneth John Behr ,  Richard Andrew Booth

    IPC分类号： F01N300

    CPC分类号： F01N11/007 ,  F01N2550/02 ,  F01N2900/0421 ,  Y02T10/47

    摘要： A method and system for diagnosing catalyst operation in an internal combustion engine having a two-bank, three EGO sensor structure includes monitoring when the EGO sensors switch states between rich and lean and determining the ratio between a switch count of the post-catalyst EGO sensor signal and a switch count of a pre-catalyst EGO sensor signal over a selected time period. If the exhaust bank is a one-sensor bank having only a post-catalyst EGO sensor and not a pre-catalyst EGO sensor, the system uses the switch count from the pre-catalyst EGO sensor in the two-sensor bank to calculate the switch ratio, thereby allowing calculation of two switch ratios without two matched pairs of EGO sensors. The switch ratio indicates the efficiency of the catalyst and may be compared with later-generated ratios to monitor converter efficiency over time.

    摘要翻译： 用于诊断具有两岸三EGO传感器结构的内燃机中的催化剂操作的方法和系统包括监测EGO传感器何时切换富和贫之间的状态，并确定催化剂后EGO传感器的开关计数之间的比率 信号和催化剂前EGO传感器信号的开关计数。 如果排气组是仅具有催化后EGO传感器且不是催化剂前EGO传感器的单传感器组，则系统使用来自双传感器组中的催化剂前EGO传感器的开关计数来计算开关 比例，从而允许计算两个开关比，而没有两个匹配的EGO传感器对。 开关比表示催化剂的效率，并且可以与后来产生的比率进行比较，以监测转换器随时间的效率。

    Method for controlling the phase difference of air/fuel ratio oscillations in an engine
    5.
    发明授权
    Method for controlling the phase difference of air/fuel ratio oscillations in an engine 有权
    用于控制发动机中空气/燃料比振荡的相位差的方法

    公开(公告)号：US06553982B1

    公开(公告)日：2003-04-29

    申请号：US09785720

    申请日：2001-02-16

    申请人： Richard Andrew Booth ,  Brent Edward Sealy ,  Kenneth John Behr

    发明人： Richard Andrew Booth ,  Brent Edward Sealy ,  Kenneth John Behr

    IPC分类号： F02D4114

    CPC分类号： F02D41/0082 ,  F02D41/1408 ,  F02D41/1443 ,  F02D41/1473 ,  F02D41/1474 ,  F02D41/1493

    摘要： A method for controlling the phasing of first and second air/fuel ratio oscillations in first and second cylinder groups, respectively, of an internal combustion engine is provided. The method includes determining a phase difference between the first air/fuel ratio oscillations and the second air/fuel ratio oscillations. The method further includes adjusting a phase of the first air/fuel ratio oscillations so that both first and second air/fuel ratio oscillations are at a predetermined phase offset with respect to one another, while maintaining an average air/fuel bias in the first cylinder group.

    摘要翻译： 提供一种用于分别控制内燃机的第一和第二气缸组中的第一和第二空气/燃料比振荡的定相的方法。 该方法包括确定第一空气/燃料比振荡与第二空气/燃料比振荡之间的相位差。 该方法还包括调节第一空气/燃料比振荡的相位，使得第一和第二空气/燃料比振荡都相对于彼此处于预定的相位偏移，同时保持第一气缸中的平均空气/燃料偏压 组。

    Method for controlling air/fuel mixture in an internal combustion engine
    6.
    发明授权
    Method for controlling air/fuel mixture in an internal combustion engine 失效
    用于控制内燃机中空气/燃料混合物的方法

    公开(公告)号：US06276129B1

    公开(公告)日：2001-08-21

    申请号：US09488417

    申请日：2000-01-20

    申请人： Richard Andrew Booth ,  Brent Edward Sealy ,  Kenneth John Behr ,  Michael John Cullen

    发明人： Richard Andrew Booth ,  Brent Edward Sealy ,  Kenneth John Behr ,  Michael John Cullen

    IPC分类号： F01N300

    CPC分类号： F02D41/1443 ,  F02D41/2454 ,  F02D41/248

    摘要： A method and system for controlling the air/fuel ratio in an internal combustion engine having a first group of cylinders and a second group of cylinders. The first group of cylinders is coupled to a catalyst and at least one oxygen sensor, which provides a first feedback signal. The second group of cylinders is coupled to a catalyst and a post-catalyst oxygen sensor, which provides a second feedback signal. A controller uses the first and second feedback signals to calculate a short-term air/fuel bias value for the second group of cylinders. The controller also calculates a new long-term air/fuel bias value corresponding to the current engine speed and engine. The new long-term air/fuel bias value is based on a previously-calculated long-term air/fuel bias value calculated for the same engine load and speed. A total air/fuel bias value is calculated based on the short-term air/fuel bias value and the long-term air/fuel bias value. The new long-term air/fuel bias value is stored for future calculations.

    摘要翻译： 一种用于控制具有第一组气缸和第二组气缸的内燃机中的空燃比的方法和系统。 第一组气缸耦合到催化剂和至少一个氧传感器，其提供第一反馈信号。 第二组汽缸耦合到催化剂和催化后氧传感器，其提供第二反馈信号。 控制器使用第一和第二反馈信号来计算第二组气缸的短期空气/燃料偏置值。 控制器还计算与当前发动机转速和发动机相对应的新的长期空气/燃料偏置值。 新的长期空气/燃料偏差值基于以前计算的相同发动机负载和速度的长期空气/燃料偏差值。 基于短期空气/燃料偏差值和长期空气/燃料偏差值计算总空气/燃料偏差值。 新的长期空气/燃料偏差值被存储用于将来的计算。

    Method and system for compensating for degraded pre-catalyst oxygen sensor in a two-bank exhaust system
    8.
    发明授权
    Method and system for compensating for degraded pre-catalyst oxygen sensor in a two-bank exhaust system 有权
    用于补偿双排排气系统中劣化的预催化剂氧传感器的方法和系统

    公开(公告)号：US06282888B1

    公开(公告)日：2001-09-04

    申请号：US09488418

    申请日：2000-01-20

    申请人： Brent Edward Sealy ,  Kenneth John Behr ,  Richard Andrew Booth

    发明人： Brent Edward Sealy ,  Kenneth John Behr ,  Richard Andrew Booth

    IPC分类号： F01N300

    CPC分类号： F02D41/1443 ,  F02D41/1441 ,  F02D41/1495

    摘要： A method and system for controlling the air/fuel ratio in an internal combustion engine having first and second groups of cylinders coupled to first and second exhaust banks, respectively. Each exhaust bank has a catalyst, a pre-catalyst oxygen sensor and a post-catalyst oxygen sensor, wherein the oxygen sensors monitor the air/fuel ratio in their respective exhaust banks and provide corresponding feedback signals to a controller. The controller uses the feedback signals to control the air/fuel ratio in the engine cylinders. When it is detected that one or the other of the pre-catalyst oxygen sensors has degraded, the controller calculates A/F values for the group of cylinders corresponding to the exhaust bank having a degraded EGO sensor based on feedback signals from the three still-functional oxygen sensors.

    摘要翻译： 一种用于控制内燃机中的空燃比的方法和系统，所述内燃机分别具有联接到第一和第二排气组的第一和第二组气缸。 每个排气组具有催化剂，预催化剂氧传感器和催化后氧传感器，其中氧传感器监测其各自排气组中的空气/燃料比，并向控制器提供相应的反馈信号。 控制器使用反馈信号来控制发动机气缸中的空燃比。 当检测到催化剂中的氧传感器中的一个或另一个已经劣化时，控制器基于来自三个静止电极的反馈信号来计算与具有劣化的EGO传感器的排气组对应的气缸组的A / F值， 功能氧传感器。