公开(公告)号：US09657678B2

公开(公告)日：2017-05-23

申请号：US14680934

申请日：2015-04-07

申请人： General Electric Company

发明人： Pin Zeng ,  Prashant Srinivasan ,  Mark James Lemke

IPC分类号： F02D41/26 ,  F02D41/00 ,  F02D41/02 ,  F02D41/14 ,  F01N11/00 ,  F01N13/00

CPC分类号： F02D41/26 ,  F01N11/007 ,  F01N13/008 ,  F01N2340/00 ,  F01N2340/02 ,  F01N2560/021 ,  F01N2560/022 ,  F01N2560/025 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2900/0416 ,  F01N2900/0601 ,  F02D41/0002 ,  F02D41/0295 ,  F02D41/14 ,  F02D41/1441 ,  F02D41/1452 ,  F02D41/1453 ,  F02D41/1454 ,  F02D41/146 ,  F02D41/1481 ,  F02D41/263 ,  F02D2041/1431 ,  F02D2041/1468 ,  F02D2200/0814 ,  Y02T10/42 ,  Y02T10/47

摘要： A system includes a controller that has a processor. The processor is configured to receive a first signal from a first sensor indicative of a first exhaust measurement, wherein the first sensor is disposed at a catalytic converter system inlet of a catalytic converter system. The processor is further configured to derive one or more of an estimated length, estimated volume, or estimated transport delay of an exhaust conduit based on the first signal, wherein a first end of the exhaust conduit is connected to an engine outlet of a engine, and a second end of the exhaust conduit is connected to the catalytic converter system inlet; and to apply the one or more of estimated length, estimated volume, or estimated transport delay of the exhaust conduit during control of the engine.

公开(公告)号：US09541469B2

公开(公告)日：2017-01-10

申请号：US14572076

申请日：2014-12-16

申请人： Ford Global Technologies, LLC

发明人： Michael James Uhrich ,  Adam Nathan Banker ,  James Michael Kerns ,  Imad Hassan Makki

IPC分类号： F02D41/22 ,  G01M15/10 ,  F01N11/00 ,  F02D41/12 ,  F02D41/14 ,  F02D41/30

CPC分类号： G01M15/104 ,  F01N11/007 ,  F01N2550/20 ,  F01N2560/025 ,  F02D41/123 ,  F02D41/1481 ,  F02D41/3017 ,  Y02T10/47

摘要： A method for monitoring an exhaust gas sensor coupled in an engine exhaust is provided. In one embodiment, the method comprises indicating exhaust gas sensor degradation based on a time delay and line length of each sample of a set of exhaust gas sensor responses collected during a commanded change in air-fuel ratio. In this way, the exhaust gas sensor may be monitored utilizing robust parameters in a non-intrusive manner.

摘要翻译： 提供一种用于监测联接在发动机排气中的废气传感器的方法。 在一个实施例中，该方法包括基于在命令的空燃比变化期间收集的一组废气传感器响应的每个样品的时间延迟和线路长度来指示废气传感器劣化。 以这种方式，可以以非侵入式方式利用鲁棒参数来监测废气传感器。

公开(公告)号：US09518893B2

公开(公告)日：2016-12-13

申请号：US14374759

申请日：2012-12-05

申请人： Robert Bosch GmbH

发明人： Andreas Michalske

IPC分类号： G01M15/10 ,  F02D41/14 ,  F02D41/18 ,  F02D41/22

CPC分类号： G01M15/102 ,  F02D41/1454 ,  F02D41/1458 ,  F02D41/1461 ,  F02D41/1481 ,  F02D41/1495 ,  F02D41/18 ,  F02D41/222 ,  F02D2041/1432

摘要： In a method for determining a dead time in the response characteristic of an exhaust gas sensor in order to determine an exhaust gas state quantity in an exhaust gas duct of an internal combustion engine, the dead time is determined from a measured output signal of the exhaust gas sensor and a comparison signal. An undelayed comparison signal is determined, and a cross-correlation is formed between the measured output signal and the comparison signal delayed by a model dead time selected in such a way that the cross-correlation function assumes a maximum, and the dead time of the measured output signal is set equal to the selected model dead time.

摘要翻译： 在确定排气传感器的响应特性中的死区时间以便确定内燃机的排气管道中的排气状态量的方法中，根据测量的排气的输出信号来确定死区时间 气体传感器和比较信号。 确定未延迟的比较信号，并且在所测量的输出信号和延迟了模型死区时间的比较信号之间形成互相关，所述模型死区时间以互相关函数呈现最大值的方式选择，并且死区时间 测量输出信号设置为等于所选模型死区时间。

公开(公告)号：US07305977B1

公开(公告)日：2007-12-11

申请号：US11656928

申请日：2007-01-23

申请人： David J. Stroh

发明人： David J. Stroh

IPC分类号： F02D41/14

CPC分类号： F02D41/0275 ,  F02D41/0007 ,  F02D41/0052 ,  F02D41/1477 ,  F02D41/1481 ,  F02D41/18 ,  F02D2041/141 ,  Y02T10/144 ,  Y02T10/47

摘要： A control system and method for controlling torque output of an engine include an air control module that receives an actual airflow and a desired airflow and outputs an adjusted actual airflow based on the actual airflow and the desired airflow. A fuel control module receives the adjusted actual airflow and controls fuel output based on the adjusted actual airflow, a ratio (λ) of an operating air-fuel mixture to an ideal air-fuel mixture, and an operating curve (λtraj).

摘要翻译： 用于控制发动机的扭矩输出的控制系统和方法包括空气控制模块，其接收实际气流和期望的气流，并基于实际气流和期望的气流输出经调节的实际气流。 燃料控制模块接收经调整的实际气流并基于经调节的实际气流控制燃料输出，操作空气 - 燃料混合物与理想空气 - 燃料混合物的比率（λ）和操作曲线 ）。

公开(公告)号：US20050022797A1

公开(公告)日：2005-02-03

申请号：US10901087

申请日：2004-07-29

申请人： Noriaki Ikemoto ,  Hisashi Iida

发明人： Noriaki Ikemoto ,  Hisashi Iida

IPC分类号： F02M25/08 ,  F02D41/00 ,  F02D41/14 ,  F02D41/34 ,  F02D45/00

CPC分类号： F02D41/008 ,  F02D41/0032 ,  F02D41/1454 ,  F02D41/1456 ,  F02D41/1458 ,  F02D41/1479 ,  F02D41/1481 ,  F02D41/2454 ,  F02D41/2477 ,  F02D2041/1433 ,  F02D2041/1437 ,  F02D2041/2027 ,  F02D2200/0402

摘要： An air-fuel ratio deviation calculated by an air-fuel ratio deviation calculation part is inputted to a cylinder-by-cylinder air-fuel ratio estimation part. A cylinder-by-cylinder air-fuel ratio is estimated in the cylinder-by-cylinder air-fuel ratio estimation part. In the cylinder-by-cylinder air-fuel ratio estimation part, attention is paid to gas exchange in an exhaust collective part of an exhaust manifold, and a model is created. In this model, a detection value of an A/F sensor is obtained by multiplying histories of the cylinder-by-cylinder air-fuel ratio of an inflow gas in the exhaust collective part and histories of the detection value of the A/F sensor by specified weights respectively and by adding them. The cylinder-by-cylinder air-fuel ratio is estimated on the basis of the model.

摘要翻译： 由空燃比偏差计算部计算的空燃比偏差被输入到逐缸空燃比估计部。 在逐个缸缸空燃比估计部中估计出逐缸空燃比。 在气缸缸空燃比推定部中，关注排气歧管的排气集合部中的气体交换，形成模型。 在该模型中，A / F传感器的检测值通过乘以排气集合部中的流入气体的逐缸空燃比的历史和A / F传感器的检测值的历史 分别通过加入它们。 以汽缸为单位的空燃比是根据模型估算的。

公开(公告)号：US06763657B2

公开(公告)日：2004-07-20

申请号：US10244422

申请日：2002-09-17

申请人： Satoshi Wachi ,  Hiromichi Hisato

发明人： Satoshi Wachi ,  Hiromichi Hisato

IPC分类号： F01N300

CPC分类号： F01N3/0814 ,  F01N3/0871 ,  F02D41/0245 ,  F02D41/027 ,  F02D41/1446 ,  F02D41/1454 ,  F02D41/1481 ,  F02D41/187 ,  F02D2200/0802 ,  Y02T10/26

摘要： An air-fuel ratio of exhaust gas flowing into a NOx absorber catalyst is compulsorily changed from a lean side to a rich side to release NOx absorbed by the NOx absorber catalyst. The Nox is reduced at the same time. If temperature of the NOx absorber catalyst is lower than a first predetermined temperature T1, temporaral change of the air-fuel ratio of the exhaust gas to the rich side for the purpose of releasing and reducing NOx is inhibited, and if temperature of the NOx absorber catalyst is higher than the first predetermined temperature T1 and lower than a second predetermined temperature T2, at the time of changing temporarily the air-fuel ratio of the exhaust gas to the rich side for the purpose of releasing and reducing NOx, timing of changing the air-fuel ratio and the set air-fuel ratio are changed depending on the temperature of the NOx absorber catalyst.

摘要翻译： 流入NOx吸收剂催化剂的排气的空燃比强制地从稀侧变为富侧，以释放由NOx吸收剂催化剂吸收的NOx。 Nox在同一时间减少。 如果NOx吸收剂催化剂的温度低于第一预定温度T1，则为了释放和还原NOx目的，排气到富面的空燃比的暂时变化被抑制，并且如果NOx吸收剂的温度 催化剂高于第一预定温度T1且低于第二预定温度T2时，为了释放和还原NOx，将废气的空燃比临时改变为浓侧，此时改变 空燃比和设定空燃比根据NOx吸收剂催化剂的温度而变化。

公开(公告)号：US06722122B2

公开(公告)日：2004-04-20

申请号：US10382220

申请日：2003-03-06

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。

公开(公告)号：US06667622B1

公开(公告)日：2003-12-23

申请号：US09847928

申请日：2001-05-03

申请人： Peter J. Lenehan

发明人： Peter J. Lenehan

IPC分类号： F02P1700

CPC分类号： F02P17/12 ,  F02D41/1441 ,  F02D41/1446 ,  F02D41/1474 ,  F02D41/1475 ,  F02D41/1481 ,  F02D41/22 ,  F02D2200/0602 ,  Y02T10/40

摘要： A low cost, easy to use, hand held pulse stream analyzer is designed to show, after an engine stops operating, which pulse stream, ignition or injection, quit first. Additionally, the analyzer is capable, using relative time domain analysis to comparatively analyze these pulse streams to the alternator ripple pulse stream, of determining if the fuel flow to the injectors quit, thus causing the engine to quit. This information quickly gives the technician a direction to investigate to find a responsible faulty component for the problem being experienced, and is especially helpful in attempting to diagnose intermittent faults in a much more efficient manner. The inventive device is usable on virtually all brands and types of gasoline powered vehicles.

摘要翻译： 低成本，易于使用的手持脉冲流分析仪旨在显示，在发动机停止运行后，哪个脉冲流，点火或喷射首先退出。 此外，分析仪能够使用相对时域分析来比较地将这些脉冲流分析到交流发电机纹波脉冲流，以确定到喷射器的燃料流量是否退出，从而导致发动机退出。 这些信息可以帮助技术人员进行调查，寻找遇到的问题的负责任的错误组件，特别有助于以更有效的方式诊断间歇性故障。 本发明的装置几乎可用于汽油动力车辆的所有品牌和类型。

公开(公告)号：US06550237B1

公开(公告)日：2003-04-22

申请号：US10065190

申请日：2002-09-25

申请人： Andrew A. Adamczyk ,  Christian Thomas Goralski, Jr. ,  Eva Thanasiu

发明人： Andrew A. Adamczyk ,  Christian Thomas Goralski, Jr. ,  Eva Thanasiu

IPC分类号： F01N300

CPC分类号： F02D41/1458 ,  F01N11/007 ,  F01N2550/02 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/1474 ,  F02D41/1481 ,  F02D41/187 ,  F02D2200/0404 ,  Y02T10/47

摘要： A method and system are provided for monitoring exhaust gas conversion efficiency of a catalytic converter during operation of an internal combustion engine coupled to the catalytic converter. The system includes an upstream exhaust gas sensor interposed the engine and the catalytic converter for generating a first signal based on the exhaust gas upstream of the converter. A downstream exhaust gas sensor is interposed the catalytic converter and atmosphere for generating a second signal based on the exhaust gas downstream of the converter. A phase shift detector is provided for estimating a phase shift between the first and second signals. A processor is provided for aligning the first and second signals such that the resulting phase shift between the first and second signals is substantially an integer multiple of &pgr; radians and for determining conversion efficiency of the catalytic converter based such phase aligned first and second signals. With such method and system, average error of the calculated index ratio using such system and method and the theoretical average error in index ration (IR) is minimized when the phase shift between the upstream and downstream sensor signals is substantially an integer multiple of &pgr; radians.

摘要翻译： 提供了一种方法和系统，用于监测催化转化器在与催化转化器耦合的内燃机操作期间的排气转化效率。 该系统包括插入发动机和催化转化器的上游废气传感器，用于基于转炉上游的排气产生第一信号。 下游废气传感器插入催化转化器和气氛，用于基于转炉下游的废气产生第二信号。 提供了一种用于估计第一和第二信号之间的相移的相移检测器。 提供了一种用于对准第一和第二信号的处理器，使得在第一和第二信号之间产生的相移基本上是π弧度的整数倍，并且用于确定基于这种相位对准的第一和第二信号的催化转换器的转换效率。 使用这种方法和系统，当上游和下游传感器信号之间的相移基本上是pi弧度的整数倍时，使用这种系统和方法的计算指数比率的平均误差和指数比（IR）的理论平均误差被最小化 。

公开(公告)号：US06302091B1

公开(公告)日：2001-10-16

申请号：US09523291

申请日：2000-03-10

申请人： Hisashi Iida

发明人： Hisashi Iida

IPC分类号： F02B2300

CPC分类号： F02D41/1487 ,  F02D41/047 ,  F02D41/068 ,  F02D41/1481 ,  F02D2041/1431

摘要： In an air-fuel ratio feedback control system for engines, a feedback correction amount is calculated in response to an air-fuel ratio detected at an engine exhaust side to effect an air-fuel ratio feedback control even during an engine warm-up period. A delay time compensation amount is calculated from two basic fuel injection amounts calculated presently and previously. The previous fuel injection amount is calculated the delay time before the present fuel injection amount. The feedback correction amount is corrected with the delay time compensation amount. When the engine undergoes a transient operation condition such as acceleration or deceleration, the present fuel injection amount is corrected with the corrected feedback correction amount. When the basic fuel injection amount changes rapidly due to acceleration, the delay time compensation amount is decreased responsively and the corrected feedback correction amount is increased so that the present fuel injection amount is not reduced too much.

摘要翻译： 在用于发动机的空燃比反馈控制系统中，响应于在发动机排气侧检测到的空燃比来计算反馈校正量，从而即使在发动机预热期间也进行空燃比反馈控制。 延迟时间补偿量由当前和之前计算的两个基本燃料喷射量计算。 计算当前燃料喷射量之前的延迟时间的先前燃料喷射量。 以延迟时间补偿量校正反馈修正量。 当发动机经历诸如加速或减速的瞬时操作条件时，用校正的反馈校正量校正当前的燃料喷射量。 当基本燃料喷射量由于加速而急剧变化时，响应地减小延迟时间补偿量，并且校正反馈校正量增加，使得当前的燃料喷射量不会太大。