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1.发明授权System and method for processing test measurements collected from an internal combustion engine for diagnostic purposes 失效用于处理从内燃机收集的测试测量用于诊断目的的系统和方法
公开(公告)号：US5361628A
公开(公告)日：1994-11-08
申请号：US100794
申请日：1993-08-02
CPC分类号： F02D41/22 , G01M15/05 , F02B2075/027 , F02D2041/288 , F02D41/1404 , F02D41/1405 , Y02T10/40 , Y10S706/913
摘要： A system and method for processing test measurements collected from an internal combustion engine that is cold-tested for diagnostic purposes. Test measurements are collected from an engine. The test measurements are "pre-processed" by filtering and subsampling techniques so that Principle Component Analysis can be applied to condense the quantity of test measurements while still retaining a statistically accurate indication of a majority of the original measurements. The pre-processed test measurements are then passed through one or more classifiers including: a Neural Network classifier, a Fuzzy Logic classifier, a cluster-based classifier (or "Spherical" classifier) and a Genetic Program classifier. Results from these classifiers can be used to obtain a verdict about an engine (i.e., whether the engine is "normal" or "faulty").
摘要翻译： 用于处理从内燃机收集的测试测量的系统和方法，该内燃机经过冷测试用于诊断目的。 从发动机收集测试测量值。 测试测量通过滤波和子采样技术进行“预处理”，以便可以应用原理分量分析来缩小测试测量的数量，同时仍然保留大部分原始测量的统计学准确指示。 预处理的测试测量然后通过一个或多个分类器，包括：神经网络分类器，模糊逻辑分类器，基于簇的分类器（或“球形”分类器）和遗传程序分类器。 可以使用这些分类器的结果来获得关于发动机的判定（即，发动机是“正常”还是“有故障”）。
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公开(公告)号：US5587524A
公开(公告)日：1996-12-24
申请号：US433186
申请日：1995-05-03
CPC分类号： G01M15/11
摘要： A misfire detection assembly, used in conjunction with a motor vehicle having a fuel injector, an internal combustion engine and at least one output sensor, includes: a correlator which is electrically connected to the fuel injector and the output sensor wherein the correlator correlates firing events created by the fuel injector with an output signal created by the output sensor; a filter electrically connected to the correlator to receive the output signal and to compare the output signal against a variable threshold signal created by the filter; and a recorder, electrically connected to the filter, to record the firing events which exceed the variable threshold signal and those which do not exceed the variable threshold signal.
摘要翻译： 与具有燃料喷射器，内燃机和至少一个输出传感器的机动车辆结合使用的失火检测组件包括：电连接到燃料喷射器和输出传感器的相关器，其中相关器将发射事件相关联 由燃料喷射器产生的由输出传感器产生的输出信号; 电连接到相关器以接收输出信号并将输出信号与由滤波器产生的可变阈值信号进行比较的滤波器; 以及电连接到滤波器的记录器，以记录超过可变阈值信号的触发事件和不超过可变阈值信号的触发事件。
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3.发明授权
公开(公告)号：US5559285A
公开(公告)日：1996-09-24
申请号：US349580
申请日：1994-12-05
申请人： Bruce D. Bryant , Kenneth A. Marko , John V. James
发明人： Bruce D. Bryant , Kenneth A. Marko , John V. James
CPC分类号： G01M15/11 , G01M15/106
摘要： Misfiring of individual cylinders in an internal combustion engine 70 is detected based on simultaneous use of two or more different methods of misfire detection which examine different combustion-related parameters of engine operation, such as crankshaft acceleration and exhaust gas pressure. An analyzer 76 produces a final misfire determination M.sub.f (i) based on the simultaneously obtained misfire determinations in order to provide greater coverage of the speed-load range of engine 70 and to provide increased confidence and accuracy in calling misfires in the portion of the speed-load range where both misfire methods are presumed to function.
摘要翻译： 基于同时使用两种或更多种不同的失火检测方法来检测内燃机70中的各个气缸的点火，其检查诸如曲轴加速度和排气压力的发动机运行的不同燃烧相关参数。 分析器76基于同时获得的失火确定来产生最终失火确定Mf（i），以便提供对发动机70的速度负载范围的更大覆盖，并且在速度部分中提供调用失火的增加的置信度和精度 - 两种失火方法都被推定为起作用的负载范围。
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4.发明授权
公开(公告)号：US5193513A
公开(公告)日：1993-03-16
申请号：US892883
申请日：1992-06-03
申请人： Kenneth A. Marko , Bruce D. Bryant
发明人： Kenneth A. Marko , Bruce D. Bryant
CPC分类号： G01M15/106 , F02M26/57 , F02M26/61
摘要： Misfiring of individual cylinders in an internal combustion engine is detected based on sensing exhaust pressure during each operating cycle of the engine. A pressure signal is sampled and digitized during each cycle to form an input vector for a pattern classifier. Predetermined internal coefficients of the trained classifier enable the classifier to discriminate between firing and misfiring cylinders in real time with a high degree of accuracy. Overall system cost is reduced by sharing a pressure transducer with an exhaust gas recirculation system on the internal combustion engine.
摘要翻译： 基于在发动机的每个操作循环期间的感测排气压力来检测内燃机中各个气缸的点火。 在每个周期期间对压力信号进行采样和数字化，以形成模式分类器的输入向量。 训练分类器的预定内部系数使得分类器能够以高精度实时地区分点火和失火气缸。 通过在内燃机上与排气再循环系统共用压力传感器来降低总体系统成本。
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公开(公告)号：US5095742A
公开(公告)日：1992-03-17
申请号：US650266
申请日：1991-02-04
CPC分类号： G01M15/042 , F02D41/1497 , G01M15/11
摘要： A method and apparatus are provided for reliably detecting misfires in an internal combustion engine during actual driving conditions by monitoring fluctuations in engine speed between consecutive firing intervals. An average acceleration over a series of firing intervals is removed from an individual acceleration measurement corresponding to a particular firing interval to give an acceleration deviation which is then normalized to an expected torque to provide a power loss measurement. The power loss measurement indicates the occurrence of a misfire with a high signal-to-noise ratio. The information derived from misfire detection can be used to prevent destruction of a catalytic converter by unburned fuel mixtures and can be used to improve vehicle driveability by correcting for or indicating needed service for the vehicle. The misfire detection is implemented using existing sensors and processors and is adapted to be done on-board a vehicle in real time.
摘要翻译： 提供了一种方法和装置，用于通过监测连续点火间隔之间的发动机转速的波动来在实际行驶条件下可靠地检测内燃机中的火灾。 从与特定点火间隔相对应的单个加速度测量中去除一系列点火间隔上的平均加速度，以给出加速度偏差，然后将该加速度偏差归一化为预期转矩以提供功率损耗测量。 功率损耗测量表明发生具有高信噪比的失火。 来自失火检测的信息可用于防止未燃燃料混合物对催化转化器的破坏，并且可用于通过校正或指示车辆所需的服务来改善车辆驾驶性能。 使用现有的传感器和处理器实现失火检测，并且适于实时地在车载车辆上完成。
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公开(公告)号：US5109695A
公开(公告)日：1992-05-05
申请号：US710841
申请日：1991-06-05
CPC分类号： F02D41/1497 , G01M15/11
摘要： A method and apparatus are provided for reliably detecting misfires in an internal combustion engine during actual driving conditions by monitoring fluctuations in engine speed between consecutive firing intervals. An average acceleration over a series of firing intervals is removed from an individual acceleration measurement corresponding to a particular firing interval to give an acceleration deviation which is then normalized to an expected torque to provide a power loss measurement. The power loss measurement indicates the occurrence of a misfire with a high signal-to-noise ratio. The information derived from misfire detection can be used to prevent destruction of a catalytic converter by unburned fuel mixtures and can be used to improve vehicle driveability by correcting for or indicating needed service for the vehicle. The misfire detection is implemented using existing sensors and processors and is adapted to be done on-board a vehicle in real time. Noise present in the acceleration data is measured and a no-test condition is recognized depending on the magnitude of the measured noise.
摘要翻译： 提供了一种方法和装置，用于通过监测连续点火间隔之间的发动机转速的波动来在实际行驶条件下可靠地检测内燃机中的火灾。 从与特定点火间隔相对应的单个加速度测量中去除一系列点火间隔上的平均加速度，以给出加速度偏差，然后将该加速度偏差归一化为预期转矩以提供功率损耗测量。 功率损耗测量表明发生具有高信噪比的失火。 来自失火检测的信息可用于防止未燃燃料混合物对催化转化器的破坏，并且可用于通过校正或指示车辆所需的服务来改善车辆驾驶性能。 使用现有的传感器和处理器实现失火检测，并且适于实时地在车载车辆上完成。 测量加速度数据中存在的噪声，并根据测得的噪声的大小来识别无测试条件。
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7.发明授权Automotive engine misfire detection system including a bit-serial based recurrent neuroprocessor 失效汽车发动机失火检测系统包括基于位串的反复式神经处理器公开(公告)号：US06434541B1
公开(公告)日：2002-08-13
申请号：US09284843
申请日：1999-04-21
申请人： Raoul Tawel , Nazeeh Aranki , Lee A. Feldkamp , Gintaras V. Puskorius , Kenneth A. Marko , John V. James
发明人： Raoul Tawel , Nazeeh Aranki , Lee A. Feldkamp , Gintaras V. Puskorius , Kenneth A. Marko , John V. James
IPC分类号： G06F1518
CPC分类号： G01M15/11
摘要： An engine diagnostic system includes a bit-serial based recurrent neuroprocessor for processing data from an internal combustion engine in order to diagnose misfires in real-time and reduces the number of neurons required to perform the task by time multiplexing groups of neurons from a candidate pool of neurons to achieve the successive hidden layers of the recurrent network topology.
摘要翻译： 发动机诊断系统包括用于处理来自内燃机的数据的基于位串的反复式神经处理器，以便实时地诊断失火，并且通过从候选池时间复用神经元组来减少执行任务所需的神经元数量 的神经元来实现复发网络拓扑的连续隐藏层。
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8.发明授权Adaptive correction of torsional and wheel profile position irregularities for misfire detection 失效用于失火检测的扭转和轮廓位置不规则的自适应校正
公开(公告)号：US5531108A
公开(公告)日：1996-07-02
申请号：US417357
申请日：1995-04-05
CPC分类号： G01M15/11
摘要： A crankshaft based misfire detector for an internal combustion engine detects and identifies misfire over a broad range of engine operating conditions by establishing correction factors to compensate for crankshaft torsional oscillations and static wheel profile errors which corrupt the acceleration signals used to detect misfire. The correction factors are adaptively determined during in-use engine operation and are updated in one manner for most firings but in another manner for any cylinder firing which had the relatively lowest corrected acceleration within an engine cycle.
摘要翻译： 用于内燃机的基于曲轴的失火探测器通过建立校正因子来检测和识别在大范围的发动机操作条件下的失火，以补偿曲轴扭转振荡和损坏用于检测失火的加速度信号的静态车轮轮廓误差。 校正因子在使用中发动机运行期间自适应地确定，并且以一种方式更新以用于大多数发动，但是对于在发动机循环内具有相对较低的校正加速度的任何气缸点火来进行更新。
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公开(公告)号：US5044195A
公开(公告)日：1991-09-03
申请号：US572650
申请日：1990-08-24
CPC分类号： F02D41/1497 , G01M15/11
摘要： A method and apparatus are provided for reliably detecting misfires in an internal combustion engine during actual driving conditions by monitoring fluctuations in engine speed between consecutive firing intervals. An average acceleration over a series of firing intervals is removed from an individual acceleration measurement corresponding to a particular firing interval to give an acceleration deviation which is then normalized to an expected torque to provide a power loss measurement. The power loss measurement indicates the occurrence of a misfire with a high signal-to-noise ratio. The information derived from misfire detection can be used to prevent destruction of a catalytic converter by unburned fuel mixtures and can be used to improve vehicle driveability by correcting for or indicating needed service for the vehicle. The misfire detection is implemented using existing sensors and processors and is adapted to be done on-board a vehicle in real time.
摘要翻译： 提供了一种方法和装置，用于通过监测连续点火间隔之间的发动机转速的波动来在实际行驶条件下可靠地检测内燃机中的火灾。 从与特定点火间隔相对应的单个加速度测量中去除一系列点火间隔上的平均加速度，以给出加速度偏差，然后将该加速度偏差归一化为预期转矩以提供功率损耗测量。 功率损耗测量表明发生具有高信噪比的失火。 来自失火检测的信息可用于防止未燃燃料混合物对催化转化器的破坏，并且可用于通过校正或指示车辆所需的服务来改善车辆驾驶性能。 使用现有的传感器和处理器实现失火检测，并且适于实时地在车载车辆上完成。
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公开(公告)号：US06745151B2
公开(公告)日：2004-06-01
申请号：US10063828
申请日：2002-05-16
申请人： Kenneth A. Marko , Doug Thornburg , George Halow , Shane Rachedi
发明人： Kenneth A. Marko , Doug Thornburg , George Halow , Shane Rachedi
IPC分类号： G06F1130
CPC分类号： G07C5/0808 , G07C5/008
摘要： A diagnostic/prognostic system monitors performance of a vehicle or other apparatus wherein the vehicle has a plurality of operational components. Each operational component has a predetermined nominal operating state and generates respective electrical signals pursuant to its operation. A data collection memory in the vehicle stores samples of the electrical signals in a rolling buffer. An analyzer in the vehicle is responsive to the electrical signals for detecting a trigger event indicative of at least a potential variance of an operational component from its nominal operating state. A computation center located remotely from the vehicle has a database storing representations of electrical signals for classifying nominal and irregular operating states of the operational components. A transmitter is activated by the trigger event to transmit at least some of the stored samples in the rolling buffer at the time of the trigger event to the computation center. The computation center receives the transmitted samples and classifies them according to the nominal or irregular operating states.
摘要翻译： 诊断/预测系统监测车辆或其他装置的性能，其中车辆具有多个操作部件。 每个操作部件具有预定的标称操作状态，并根据其操作产生相应的电信号。 车辆中的数据采集存储器将电信号的样本存储在滚动缓冲器中。 车辆中的分析器响应于电信号，用于检测指示操作部件的至少一个潜在变化与其标称操作状态的触发事件。 位于远离车辆的计算中心具有存储电信号表示的数据库，用于分类操作部件的标称和不规则操作状态。 通过触发事件来激活发射机，以便在触发事件发生时将滚动缓冲器中存储的至少一些样本传送到计算中心。 计算中心接收发送的样本，并根据标称或不规则的运行状态进行分类。
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