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公开(公告)号：US06885932B2
公开(公告)日：2005-04-26
申请号：US10637121
申请日：2003-08-08
CPC分类号： G01M15/11
摘要： A method and system for a misfire detection acquires (301) a series of acceleration data (302) representative of acceleration behavior of an engine. The data is sampled (304) to obtain acceleration data samples at a rate sufficient to obtain up to fourth-order perturbations of the data. The samples are filtered (322) to provide bandwidth limited samples, which are provided to at least two channels (325, 329). The samples are pattern matched (332) in a first channel to enhance harmonic phenomena and pattern canceled (330) in a second channel to enhance random phenomena. Hard and random misfires are detected (334) dependent on a magnitude of the filtered acceleration data samples. Preferably, a third channel (335) is added to detect multiple misfires.
摘要翻译： 用于失火检测的方法和系统获取（301）代表发动机的加速行为的一系列加速度数据（302）。 数据被采样（304）以获得加速度数据样本，其速率足以获得数据的高达四阶扰动。 对样本进行滤波（322）以提供带宽限制的样本，其被提供给至少两个信道（325,329）。 样品在第一通道中被模式匹配（332）以增强第二通道中的谐波现象和模式取消（330），以增强随机现象。 检测到硬和随机的失火（334），这取决于经滤波的加速度数据样本的大小。 优选地，添加第三通道（335）以检测多次失火。
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公开(公告)号：US06622080B2
公开(公告)日：2003-09-16
申请号：US09916031
申请日：2001-07-26
IPC分类号： G06F1900
CPC分类号： F02D11/105 , F02D41/1403 , F02D2011/102 , F02D2041/1409 , F02D2041/141 , F02D2200/0404 , G05B13/0255
摘要： An electronic throttle controller (200) includes a feedforward control (222), a PID (224), a sliding mode control (226) and an adder (230). The PID (224) is capable of generating a first feedback term that compensates for an error signal. The sliding mode control (226) is capable of generating a second feedback term that incorporates a solution to a Lyapunov equation applied to the error signal with sliding gain being updated by an estimation of unknown dynamics. The adder (230) adds the first feedback term, the second feedback term and the feedforward control (222) so as to generate a control signal (232).
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3.发明授权
公开(公告)号：US5732551A
公开(公告)日：1998-03-31
申请号：US764658
申请日：1996-12-11
CPC分类号： F01N11/007 , F01N11/00 , F01N2550/02 , F01N2900/0421 , F01N2900/0422 , Y02T10/47
摘要： A method for monitoring the performance of a catalytic converter includes the monitoring of output from a first gas sensor (16) positioned upstream from a catalytic converter (12) and a second gas sensor (18) located at a position downstream from the catalytic converter (12). An engine controller (20) receives the output of the first and second gas sensors (16,18) and also receives estimates of the exhaust gas mass flow rate and the catalyst temperature within the catalytic converter (12). The exhaust gas mass flow rate and the catalyst temperature are used to calculate a mass transfer coefficient that is determinative of the conversion efficiency of the catalytic converter (12). A monitoring parameter is determined using the output of the first and second gas sensors (16,18), and the monitoring parameter is normalized to the coefficient. The engine controller (20) then accumulates a data set and compares the values of the data set with previously programmed pass/fail criteria to determine the performance of the catalytic converter (12).
摘要翻译： 用于监测催化转化器性能的方法包括监测位于催化转化器（12）上游的第一气体传感器（16）的输出和位于催化转化器下游位置的第二气体传感器（18） 12）。 发动机控制器（20）接收第一和第二气体传感器（16,18）的输出，并且还接收催化转化器（12）内废气质量流量和催化剂温度的估计。 废气质量流量和催化剂温度用于计算确定催化转化器（12）的转化效率的传质系数。 使用第一和第二气体传感器（16,18）的输出来确定监测参数，并且将监测参数归一化为系数。 然后，发动机控制器（20）累积数据组，并将数据集的值与先前编程的通过/不合格标准进行比较，以确定催化转化器（12）的性能。
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4.发明授权Combustion knock detection and control through statistical characterization of knock levels 失效燃烧爆震检测和控制通过统计学表征爆震级别公开(公告)号：US07415347B2
公开(公告)日：2008-08-19
申请号：US11467313
申请日：2006-08-25
CPC分类号： G01L23/225
摘要： A method of statistically characterizing combustion knock events includes receiving signals from a sensing device such as an accelerometer, estimating at least one parameter of a probability distribution function based on the received signals, and calculating a value indicative of an nth percentile based on the parameter to predict upcoming combustion knock events.
摘要翻译： 统计学地表征燃烧爆震事件的方法包括从诸如加速度计的感测装置接收信号，基于接收到的信号估计概率分布函数的至少一个参数，以及计算表示第n / SUP>百分位数基于参数预测即将到来的燃烧爆震事件。
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5.发明授权Method for monitoring the performance of a catalytic converter using a rate modifier 有权使用速率调节剂监测催化转化器的性能的方法
公开(公告)号：US6116021A
公开(公告)日：2000-09-12
申请号：US158460
申请日：1998-09-22
申请人： Darren Schumacher , Michael A. Badalament , Jeffrey D. Naber , Alan Chewter , Kevin J. Bush , Bruce Church , David Frankowski , David Price
发明人： Darren Schumacher , Michael A. Badalament , Jeffrey D. Naber , Alan Chewter , Kevin J. Bush , Bruce Church , David Frankowski , David Price
CPC分类号： F01N11/00 , F01N11/007 , F01N2550/02 , F01N2900/0422 , Y02T10/47
摘要： A method for monitoring the performance of a catalytic converter (34) computes the oxygen storage capacity and desorption capacity of a catalyst within the catalytic converter (34). An engine control unit (10) receives mass flow rate information of air from a mass air flow rate sensor (12) and an injector driver (24), and receives electrical signals from an upstream exhaust gas sensor (28) and a downstream exhaust gas sensor (30). A rate modifier is determined from excess air ratios and an adaptation parameter. The engine control unit (10) calculates normalized air fuel ratios for the exhaust gas entering and leaving the catalytic converter (34) and performs numerical integration using the rate modifier to determine the oxygen storage capacity of the catalyst in the catalytic converter (34). The calculated oxygen storage capacity of the catalyst can be compared with threshold values to determine the performance of the catalytic converter (34).
摘要翻译： 用于监测催化转化器（34）的性能的方法计算催化转化器（34）内的催化剂的储氧能力和解吸能力。 发动机控制单元（10）从质量空气流量传感器（12）和喷射器驱动器（24）接收空气的质量流量信息，并且从上游废气传感器（28）和下游排气 传感器（30）。 速率调节剂由过量空气比和适应参数确定。 发动机控制单元（10）计算进入和离开催化转化器（34）的废气的归一化空燃比，并使用速率调节器进行数值积分，以确定催化转化器（34）中催化剂的储氧能力。 将催化剂的计算氧气存储容量与阈值进行比较，以确定催化转化器（34）的性能。
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公开(公告)号：US5916294A
公开(公告)日：1999-06-29
申请号：US903892
申请日：1997-07-31
CPC分类号： F01N11/00 , F01N11/007 , F01N2550/02 , Y02T10/47
摘要： A system and method estimates tailpipe emissions by sensing (703) a catalyzed gas stream (506) and providing a total-combustible gas signal (511) dependent thereon. The total-combustible gas signal (511) has a magnitude comprised of a first portion, dependent on a concentration of the hydrocarbon gas in the catalyzed gas stream (506), and a second portion, dependent on a concentration of the other combustible gasses in the catalyzed gas stream (506). A magnitude relationship between the first portion and the second portion is variable when the catalyzed gas stream (506) transitions into a region on the rich side of stoichiometry. The variability the magnitude relationship of the first and second portions is filtered out so that the magnitude relationship is substantially constant when the catalyzed gas stream (506) transitions into the region on the rich side of stoichiometry. The filtered signal is then integrated and compared to a threshold and an out-of-compliance signal (523) is provided when the filtered integrated signal (519) exceeds the threshold.
摘要翻译： 系统和方法通过感测（703）催化气流（506）并提供依赖于其的总可燃气体信号（511）来估计尾管排放。 总可燃气体信号（511）具有取决于催化气体流（506）中的烃气体的浓度的第一部分以及第二部分，其取决于其它可燃气体的浓度 催化气流（506）。 当催化气流（506）转变成化学计量浓的一侧的区域时，第一部分和第二部分之间的大小关系是可变的。 过滤出第一和第二部分的幅度关系的变化性，使得当催化气流（506）转变到化学计量浓的一侧的区域时，幅度关系基本上是恒定的。 然后，经滤波的信号被积分并与阈值进行比较，并且当滤波的积分信号（519）超过阈值时，提供不合规信号（523）。
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7.发明授权Method for monitoring the performance of a catalytic converter using post catalyst methane measurements 失效使用后催化剂甲烷测量监测催化转化器性能的方法
公开(公告)号：US5839274A
公开(公告)日：1998-11-24
申请号：US837629
申请日：1997-04-21
CPC分类号： F01N11/00 , F02D41/0295 , F01N2550/02 , F01N2560/023 , F02D2200/0814 , F02D2200/0816 , Y02T10/47
摘要： A method for monitoring and controlling the performance of a catalytic converter (34) includes monitoring an exhaust gas stream from an engine (16) for the presence of methane. Upon detecting methane in the exhaust gas stream an oxygen storage level of a catalyst within the catalytic converter (34) is determined. The oxygen storage level is compared with a reference standard and the air/fuel ratio of the exhaust gas stream is continuously adjusted to maintain the oxygen storage level within predetermined control limits.
摘要翻译： 用于监测和控制催化转化器（34）的性能的方法包括监测来自用于存在甲烷的发动机（16）的排气流。 在检测废气流中的甲烷时，确定催化转化器（34）内的催化剂的储氧量。 将氧气存储量与参考标准进行比较，并且连续调节排气流的空气/燃料比以将氧气存储量保持在预定的控制限度内。
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公开(公告)号：US5956945A
公开(公告)日：1999-09-28
申请号：US970946
申请日：1997-11-14
CPC分类号： F01N11/007 , F01N2550/02 , F01N2550/20 , Y02T10/22 , Y02T10/47
摘要： A method and apparatus converts time-resolved sensor signals into transfer functions and/or cumulative transfer function signals which can be attained by computation means such as by using Fast Fourier Transforms. A signal, as a means to assess catalyst performance such as a signal based on sensing oxygen concentration or air to fuel ratio or hydrocarbon concentration in motor vehicle exhaust in accordance with the present invention is in the time domain and has multiple components at different frequencies. The use of Fast Fourier Transforms isolates the various spectral densities which arise from different frequency components of the complex time domain signal. Cross spectral density function and power spectral density function are used to determine the transfer function. The analysis has been found to be substantially independent of operating conditions. The transfer function and cumulative transfer function have been found to be a precise indication of the catalyst performance. The catalyst performance can be signaled to the vehicle operator for on board diagnostics (OBD) of the catalyst.
摘要翻译： 一种方法和装置将时间分辨的传感器信号转换成可以通过诸如通过使用快速傅里叶变换的计算装置来实现的传递函数和/或累积传递函数信号。 作为根据本发明的用于评估催化剂性能的手段，例如基于感测氧浓度或空气燃料比或机动车辆排气中的烃浓度的信号，在时域中具有不同频率的多个分量。 快速傅里叶变换的使用隔离了由复杂时域信号的不同频率分量产生的各种频谱密度。 交叉频谱密度函数和功率谱密度函数用于确定传递函数。 已经发现分析基本上与操作条件无关。 已经发现传递函数和累积传递函数是催化剂性能的精确指示。 可以向车辆操作员发出催化剂性能，用于催化剂的车载诊断（OBD）。
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9.发明申请COMBUSTION KNOCK DETECTION AND CONTROL THROUGH STATISTICAL CHARACTERIZATION OF KNOCK LEVELS 失效通过脉搏水平的统计特征进行燃烧检测和控制公开(公告)号：US20080051981A1
公开(公告)日：2008-02-28
申请号：US11467313
申请日：2006-08-25
CPC分类号： G01L23/225
摘要： A method of statistically characterizing combustion knock events includes receiving signals from a sensing device such as an accelerometer, estimating at least one parameter of a probability distribution function based on the received signals, and calculating a value indicative of an nth percentile based on the parameter to predict upcoming combustion knock events.
摘要翻译： 统计学地表征燃烧爆震事件的方法包括从诸如加速度计的感测装置接收信号，基于接收到的信号估计概率分布函数的至少一个参数，以及计算表示第n / SUP>百分位数基于参数预测即将到来的燃烧爆震事件。
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公开(公告)号：US07089895B2
公开(公告)日：2006-08-15
申请号：US11035194
申请日：2005-01-13
IPC分类号： F01L9/04
CPC分类号： F01L9/04 , F01L2009/0436
摘要： An apparatus and method for operating a plurality of valves in an engine uses valve actuators to move each valve. Accelerometers are used to detect acceleration of the valves and particularly the moment when they seat. A knock sensor detects an acoustic impulse made by the valves when they seat. A controller correlates signals from the sensor and accelerometers, wherein a signal from the sensor that correlates in time with a signal from an accelerometer indicates seating of the respective valve, which indicates a closure of the respective valve. The controller measures a magnitude of the acoustic impulse to be used as feedback in controlling the operation of the respective valve actuator, and provide softer landings of the valve.
摘要翻译： 用于在发动机中操作多个阀的装置和方法使用阀致动器来移动每个阀。 加速度计用于检测阀门的加速度，特别是阀座的加速度。 爆震传感器检测阀座座时产生的声脉冲。 控制器将来自传感器和加速度计的信号相关联，其中来自传感器的信号在时间上与来自加速度计的信号相关联，表示相应阀的安置，其指示相应阀的关闭。 控制器测量在控制各个阀致动器的操作中用作反馈的声脉冲的大小，并且提供阀的较软的着陆。
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