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    Engine catalyst diagnostics
    1.
    发明授权
    Engine catalyst diagnostics 有权
    发动机催化剂诊断

    公开(公告)号：US08800356B2

    公开(公告)日：2014-08-12

    申请号：US13247640

    申请日：2011-09-28

    申请人： Imad Hassan Makki ,  James Michael Kerns ,  Michael James Uhrich ,  Stephen B. Smith ,  Pankaj Kumar ,  Adam Banker

    发明人： Imad Hassan Makki ,  James Michael Kerns ,  Michael James Uhrich ,  Stephen B. Smith ,  Pankaj Kumar ,  Adam Banker

    IPC分类号： G01M15/10

    CPC分类号： F01N11/00 ,  F01N2550/02 ,  G01N33/007 ,  G06N99/005 ,  Y02T10/47

    摘要： Embodiments for predicting catalyst function are disclosed. One example embodiment includes applying a set of parameter readings for a given sample to a support vector machine to generate a classification output, recording a plurality of classification outputs for a plurality of successive samples over a first duration, and indicating catalyst degradation if a threshold percentage of the classification outputs indicates degraded catalyst performance. In this way, catalyst degradation may be indicated using a simplified model that does not require extensive calibration.

    摘要翻译： 公开了用于预测催化剂功能的实施方案。 一个示例性实施例包括将给定样本的一组参数读数应用于支持向量机以产生分类输出，在第一持续时间内记录多个连续样本的多个分类输出，并且如果阈值百分比 的分类输出表明催化剂性能下降。 以这种方式，可以使用不需要大量校准的简化模型来指示催化剂降解。

    ENGINE CATALYST DIAGNOSTICS
    2.
    发明申请
    ENGINE CATALYST DIAGNOSTICS 有权
    发动机催化剂诊断

    公开(公告)号：US20130078725A1

    公开(公告)日：2013-03-28

    申请号：US13247640

    申请日：2011-09-28

    申请人： Imad Hassan Makki ,  James Michael Kerns ,  Michael James Uhrich ,  Stephen B. Smith ,  Pankaj Kumar ,  Adam Banker

    发明人： Imad Hassan Makki ,  James Michael Kerns ,  Michael James Uhrich ,  Stephen B. Smith ,  Pankaj Kumar ,  Adam Banker

    IPC分类号： G01N31/10

    CPC分类号： F01N11/00 ,  F01N2550/02 ,  G01N33/007 ,  G06N99/005 ,  Y02T10/47

    摘要： Embodiments for predicting catalyst function are disclosed. One example embodiment includes applying a set of parameter readings for a given sample to a support vector machine to generate a classification output, recording a plurality of classification outputs for a plurality of successive samples over a first duration, and indicating catalyst degradation if a threshold percentage of the classification outputs indicates degraded catalyst performance. In this way, catalyst degradation may be indicated using a simplified model that does not require extensive calibration.

    摘要翻译： 公开了用于预测催化剂功能的实施方案。 一个示例性实施例包括将给定样本的一组参数读数应用于支持向量机以产生分类输出，在第一持续时间内记录多个连续样本的多个分类输出，并且如果阈值百分比 的分类输出表明催化剂性能下降。 以这种方式，可以使用不需要大量校准的简化模型来指示催化剂降解。

    Methods and systems for reducing internal combustion engine exhaust emissions
    7.
    发明授权
    Methods and systems for reducing internal combustion engine exhaust emissions 有权
    减少内燃机废气排放的方法和系统

    公开(公告)号：US06481428B1

    公开(公告)日：2002-11-19

    申请号：US09687628

    申请日：2000-10-13

    申请人： Imad Hassan Makki ,  James Michael Kerns ,  John Ottavio Michelini ,  Stephen B. Smith ,  Thomas Francis Rolewicz, Jr.

    发明人： Imad Hassan Makki ,  James Michael Kerns ,  John Ottavio Michelini ,  Stephen B. Smith ,  Thomas Francis Rolewicz, Jr.

    IPC分类号： F02D4100

    CPC分类号： F02D41/062 ,  F02D41/024 ,  F02D41/042 ,  F02D41/1494 ,  F02D2041/2065 ,  F02D2200/503 ,  F02N19/02 ,  F02N99/004 ,  F02N99/006 ,  Y02T10/26

    摘要： In order to provide for reduced internal combustion engine exhaust emissions when cold starting an internal combustion engine, there is provided two methods and systems for cold starting an internal combustion engine, and one method and system for shutting down an internal combustion engine. The methods and systems are directed towards: (1) a preheating of a minimum of one thermally activated sensor within an internal combustion engine prior to cold starting of the internal combustion engine; (2) an autocranking of an internal combustion engine while metering fuel into the internal combustion engine and timing ignition within the internal combustion engine such as to reduce internal combustion exhaust emissions when cold starting the internal combustion engine; and (3) a phased shut down of fuel supply control followed by ignition source control when shutting down an internal combustion engine after operating the internal combustion engine.

    摘要翻译： 为了在冷起动内燃机时提供减少的内燃机废气排放，提供了用于冷启动内燃机的两种方法和系统，以及用于关闭内燃机的一种方法和系统。 所述方法和系统涉及：（1）在所述内燃机冷启动之前，在内燃机内预热至少一个热激活传感器; （2）内燃机的自动起动，同时将内燃机的燃料计量到内燃机内，并在内燃机内进行定时点火，从而当冷启动内燃机时减少内燃废气排放; 和（3）在操作内燃机之后关闭内燃机时，逐步关闭燃料供应控制，随后进行点火源控制。

    Fuel/air ratio feedback control with catalyst gain estimation for an internal combustion engine
    8.
    发明授权
    Fuel/air ratio feedback control with catalyst gain estimation for an internal combustion engine 有权
    用于内燃机的催化剂增益估计的燃料/空气比反馈控制

    公开(公告)号：US07000379B2

    公开(公告)日：2006-02-21

    申请号：US10454059

    申请日：2003-06-04

    申请人： Imad Hassan Makki ,  James Michael Kerns ,  Stephen B. Smith

    发明人： Imad Hassan Makki ,  James Michael Kerns ,  Stephen B. Smith

    IPC分类号： F01N3/00

    CPC分类号： F02D41/0295 ,  F01N11/007 ,  F01N13/0097 ,  F02D41/1402 ,  F02D41/1441 ,  F02D2041/1419 ,  F02D2041/1422 ,  F02D2041/1433 ,  Y02T10/47

    摘要： A system and method for controlling an internal combustion engine for low emissions include an inner feedback control loop to control the engine fuel/air ratio with feedback provided by a first exhaust gas sensor and an outer feedback control loop that modifies the fuel/air ratio reference provided to the inner feedback control loop based on feedback signals provided by the first exhaust gas sensor and a second exhaust gas sensor. The fuel/air ratio reference signal controller adapts to the oxygen storage capacity of the catalyst by modeling the catalyst as an integrator with an unknown gain and estimating the catalyst gain based on the first and second exhaust gas sensor signals. Using the estimated catalyst gain, an adaptive controller gain factor is determined and subsequently used to determine the fuel/air ratio reference signal provided to the fuel/air ratio controller of the inner feedback control loop.

    摘要翻译： 用于控制用于低排放的内燃机的系统和方法包括内部反馈控制回路，以通过由第一废气传感器提供的反馈来控制发动机燃料/空气比，以及改变燃料/空气比参考的外部反馈控制回路 基于由第一废气传感器和第二废气传感器提供的反馈信号，提供给内部反馈控制回路。 燃料/空气比参考信号控制器通过将催化剂模拟为具有未知增益的积分器并基于第一和第二排气传感器信号估计催化剂增益来适应催化剂的储氧能力。 使用估计的催化剂增益，确定自适应控制器增益因子并随后用于确定提供给内部反馈控制回路的燃料/空气比控制器的燃料/空气比参考信号。

    Engine control and catalyst monitoring with downstream exhaust gas sensors
    9.
    发明授权
    Engine control and catalyst monitoring with downstream exhaust gas sensors 失效
    发动机控制和催化剂监测与下游废气传感器

    公开(公告)号：US06904751B2

    公开(公告)日：2005-06-14

    申请号：US10454329

    申请日：2003-06-04

    申请人： Imad Hassan Makki ,  Gopichandra Surnilla ,  James Michael Kerns ,  Stephen B. Smith

    发明人： Imad Hassan Makki ,  Gopichandra Surnilla ,  James Michael Kerns ,  Stephen B. Smith

    IPC分类号： F01N11/00 ,  F01N13/02 ,  F02D41/02 ,  F02D41/14 ,  F01N3/00

    CPC分类号： F01N11/007 ,  F01N11/002 ,  F01N13/0097 ,  F01N2550/02 ,  F02D41/0295 ,  F02D41/1456 ,  F02D41/1477 ,  F02D2200/0816 ,  Y02T10/47

    摘要： A system and method for controlling an internal combustion engine for low emissions include an inner feedback control loop to control the engine fuel/air ratio with feedback provided by a first exhaust gas sensor and an outer feedback control loop that modifies a reference fuel/air ratio provided to the inner feedback control loop based on feedback signals provided by a second exhaust gas sensor positioned downstream relative to a portion of the catalyst and a third exhaust gas sensor positioned downstream relative to the second exhaust gas sensor. Catalyst gains are determined by modeling the catalyst as an integrator with an unknown gain and estimating the catalyst gain based on the exhaust gas sensors with the gain used to monitor catalyst performance and/or modify the engine fuel/air ratio.

    摘要翻译： 用于控制用于低排放的内燃机的系统和方法包括内部反馈控制回路，以通过由第一废气传感器和外部反馈控制回路提供的反馈来控制发动机燃料/空气比，所述外部反馈控制回路修改参考燃料/空气比 基于由相对于催化剂的一部分位于下游的第二排气传感器提供的反馈信号和位于第二排气传感器下游的第三排气传感器提供给内部反馈控制回路。 催化剂增益通过将催化剂模拟为具有未知增益的积分器来确定，并且基于具有用于监测催化剂性能和/或改变发动机燃料/空气比的增益的废气传感器估计催化剂增益。

    Air/fuel ratio control responsive to catalyst window locator
    10.
    发明授权
    Air/fuel ratio control responsive to catalyst window locator 有权
    响应于催化剂窗口定位器的空燃比控制

    公开(公告)号：US06363715B1

    公开(公告)日：2002-04-02

    申请号：US09561643

    申请日：2000-05-02

    申请人： David Karl Bidner ,  Gopichandra Sumilla ,  Imad Hassan Makki ,  James Michael Kerns ,  Stephen B. Smith

    发明人： David Karl Bidner ,  Gopichandra Sumilla ,  Imad Hassan Makki ,  James Michael Kerns ,  Stephen B. Smith

    IPC分类号： F01N300

    CPC分类号： F02D41/1408 ,  F02D41/0235 ,  F02D41/146 ,  F02D41/1475 ,  F02D2041/142 ,  F02D2200/0602

    摘要： An air/fuel control method for an engine including a NOx sensor in operative relationship to a catalytic converter. The method comprises the steps of providing a base fuel signal related to a quantity of air inducted into the engine and generating a bias signal for biasing the base fuel signal towards a leaner air/fuel ratio. The output of the NOx sensor is monitored to detect a predetermined exhaust gas NOx value representing a predefined NOx conversion efficiency. The base fuel signal is then modified as a function of the bias signal corresponding to the predetermined exhaust gas NOx value to maintain the catalytic converter within a desired efficiency range. In one aspect of the invention, the process of detecting the edge of the NOx conversion efficiency window is executed at predetermined time periods measured by the distance the vehicle traveled, or the elapsed time since last base fuel value modification.

    摘要翻译： 一种用于包括与催化转化器操作关系的NOx传感器的发动机的空气/燃料控制方法。 该方法包括以下步骤：提供与引入发动机的空气量相关的基本燃料信号，并产生用于将基本燃料信号偏向较冷空气/燃料比的偏置信号。 监测NOx传感器的输出以检测表示预定的NOx转化效率的预定排气NOx值。 然后基本燃料信号作为与预定排气NOx值对应的偏置信号的函数被修改，以将催化转化器维持在期望的效率范围内。 在本发明的一个方面，检测NOx转化效率窗口的边缘的过程是在由车辆行驶的距离测量的预定时间段或从最后基本燃料值修改开始的经过时间之后执行的。