公开(公告)号：WO1998026164A1

公开(公告)日：1998-06-18

申请号：PCT/US1997018812

申请日：1997-10-15

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  NABER, Jeffrey, D. ,  REMBOSKI, Donald, J., Jr.

IPC: F01N03/20

CPC classification number: F01N11/007 ,  F01N11/00 ,  F01N2550/02 ,  F01N2900/0421 ,  F01N2900/0422 ,  Y02T10/47

Abstract: 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).

Abstract translation: 用于监测催化转化器性能的方法包括监测来自位于催化转化器（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。

公开(公告)号：WO1995007450A1

公开(公告)日：1995-03-16

申请号：PCT/US1994008704

申请日：1994-08-01

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  REMBOSKI, Donald, J., Jr. ,  PLEE, Steven, L. ,  LYNCH, Marvin, L. ,  McCLISH, Michael, A.

IPC: G01M15/00

CPC classification number: G01M15/11 ,  F02D41/1498 ,  F02D2041/1432 ,  F02D2200/1012 ,  F02D2200/1015

Abstract: A method, and a corresponding system, for determining misfire in a reciprocating engine measures engine crankshaft angular velocity and provides an angular velocity signal as measured from the engine crankshaft (403). A filtered acceleration signal, dependent on the engine crankshaft angular velocity signal and independent of normal combustion information and other high-order effects is provided via filtering (405). When the filtered acceleration signal exceeds a threshold dependent on at least one of the following: engine speed, engine load, or engine temperature (711), a misfire is indicated. Preferably, prior to the misfire determination, the filtered acceleration signal (701) is sampled over a first period of engine crankshaft rotation to provide a first data point (703), over a second period of engine crankshaft rotation to provide a second data point (707), and over a third period of engine crankshaft rotation to provide a third data point (705). Then, an average of the first and third data points is subtracted from the second data point and a combined acceleration signal is provided (511). Then, a misfire is indicated (517) when the combined acceleration signal exceeds the threshold (513). Preferably, this sampling of the filtered acceleration signal is continuous, and the sampling of the first, second and third data points is separated by two engine crankshaft rotations.

Abstract translation: 用于确定往复式发动机中的失火的方法和对应系统测量发动机曲轴角速度并提供从发动机曲轴（403）测得的角速度信号。 通过滤波（405）提供了依赖于发动机曲轴角速度信号和独立于正常燃烧信息和其他高阶效应的滤波加速度信号。 当过滤的加速度信号超过阈值时，取决于以下至少一项：发动机转速，发动机负荷或发动机温度（711），表示失火。 优选地，在失火确定之前，在发动机曲轴旋转的第一周期上对滤波的加速度信号（701）进行采样，以在发动机曲轴旋转的第二周期上提供第一数据点（703），以提供第二数据点 707），并且在发动机曲轴旋转的三分之一以上以提供第三数据点（705）。 然后，从第二数据点减去第一和第三数据点的平均值，并提供组合加速度信号（511）。 然后，当组合加速度信号超过阈值（513）时，指示失火（517）。 优选地，滤波加速度信号的该采样是连续的，并且第一，第二和第三数据点的采样由两个发动机曲轴旋转分开。

公开(公告)号：WO1997027461A1

公开(公告)日：1997-07-31

申请号：PCT/US1996019795

申请日：1996-12-13

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  LYNCH, Marvin, L. ,  MCCLISH, Michael, A. ,  SELFE, Margaret, A. ,  STEINL, Gregory ,  REMBOSKI, Donald, J., Jr.

IPC: G01M15/00

CPC classification number: G01M15/09 ,  F02D41/22 ,  F02D41/28 ,  F02D2041/1432 ,  F02D2041/286 ,  F02D2200/0406 ,  F02D2200/1015 ,  Y02T10/40

Abstract: A misfire detection system and method measures fluctuations of air charge ingested into an engine (303) preferably as fluctuations of the engine's intake air pressure or as fluctuations of the mass air flow. A misfire indication (337) is provided dependent on a behavior of the fluctuations of air charge. Preferably, to eliminate errors associated with engine transient operating conditions, such as acceleration, the fluctuations of air charge are differentiated (325) before a misfire detection mechanism (333) is used to determine misfire behavior.

Abstract translation: 失火检测系统和方法测量优选地作为发动机进气压力的波动或大气流的波动而吸入发动机（303）的空气的波动。 取决于空气充气波动的行为提供失火指示（337）。 优选地，为了消除与发动机瞬态操作条件（例如加速度）相关联的误差，在使用失火检测机构（333）来确定失火行为之前，空气充气的波动被区分（325）。

公开(公告)号：WO1996003706A1

公开(公告)日：1996-02-08

申请号：PCT/US1995006988

申请日：1995-06-05

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  REMBOSKI, Donald, J., Jr. ,  PLEE, Steven, L. ,  LYNCH, Marvin, L. ,  McCLISH, Michael, A.

IPC: G06F19/00

CPC classification number: G01M15/11

Abstract: An apparatus, and a corresponding method, for determining misfire in a reciprocating engine (201) operates on a selectable quantity of discrete sampled acceleration signals (217) that are indicative of acceleration behavior of the reciprocating engine (201). A decimation device (219) selects a quantity (111) of the discrete sampled acceleration signals (217) dependent on an engine family, and optionally engine operating conditions such as speed and load. An acceleration signal (311) is selected from the sampled acceleration signals (217), preferably the sample having the most negative magnitude. A misfire determination device (205) provides a misfire indication (207) dependent on the selected acceleration signal (311).

Abstract translation: 一种用于确定往复式发动机（201）中的失火的装置和相应的方法，用于指示往复式发动机（201）的加速行为的可选量的离散采样加速度信号（217）。 抽取装置（219）根据发动机系列选择离散采样加速度信号（217）的数量（111），以及可选的发动机运转条件（如速度和负载）。 从采样的加速度信号（217）中选择加速度信号（311），优选地，具有最负的幅度的样本。 失火确定装置（205）提供取决于所选择的加速度信号（311）的失火指示（207）。

公开(公告)号：WO1996003630A1

公开(公告)日：1996-02-08

申请号：PCT/US1995008431

申请日：1995-06-05

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  REMBOSKI, Donald, J., Jr. ,  PLEE, Steven, L. ,  LYNCH, Marvin, L. ,  McCLISH, Michael, A. ,  SONDAY, Susan, K.

IPC: G01M15/00

CPC classification number: G01M15/11

Abstract: An acceleration based misfire detection system with improved signal fidelity comprises a measurement device (421, 423, 425, 427) for determining an operating condition of the powertrain (401). The operating condition can include engine speed, engine load, as well as other conditions. A misfire detector (417) provides a misfire indication (419) dependent on an improved fidelity acceleration signal (415). The improved fidelity acceleration signal (415) is provided by either a median filter (413) operating on an acceleration signal (411) where the median filter's rank is programmable dependent on the determined operating condition of the powertrain, a highpass filter operating on an acceleration signal (411) where the highpass filter's order is programmable dependent on the determined operating condition of the powertrain, or from an acceleration determination device (409) acting on velocity information provided by a lowpass filter (407) operating on a velocity signal (406) where the lowpass filter's order is programmable dependent on the determined operating condition of the powertrain, or a combination of the above.

Abstract translation: 具有改善的信号保真度的基于加速度的失火检测系统包括用于确定动力系（401）的操作状态的测量装置（421,423,425,427）。 运行条件可以包括发动机转速，发动机负荷以及其他条件。 失火探测器（417）根据改进的保真加速度信号（415）提供失火指示（419）。 改进的保真加速度信号（415）由操作在加速度信号（411）上的中值滤波器（413）提供，其中中值滤波器的秩可编程，取决于确定的动力系的运行状态，运行在加速度上的高通滤波器 信号（411），其中高通滤波器的顺序可根据所确定的动力系的操作条件或来自加速度确定装置（409）而起作用的作用在由速度信号（406）上操作的低通滤波器（407）提供的速度信息上， 其中低通滤波器的顺序可根据动力总成的确定的操作条件或上述的组合来编程。

公开(公告)号：WO1997019334A1

公开(公告)日：1997-05-29

申请号：PCT/US1996014273

申请日：1996-09-04

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  McCLISH, Michael, A. ,  LYNCH, Marvin, L. ,  SELFE, Margaret, A. ,  STEINL, Gregory ,  REMBOSKI, Donald, J., Jr.

IPC: G01M15/00

CPC classification number: G01M15/06

Abstract: A method for detrending engine positional data includes acquiring positional encoder data over a plurality of consecutive engine revolutions as the engine is decelerating. Then, a trend (207) in the acquired positional encoder data consistent with behavior occurring at less than a frequency of one cycle per engine revolution is identified. Next, corrected positional encoder data (208) is generated dependent on removing the identified trend (207).

Abstract translation: 一种用于消除发动机位置数据的方法包括当发动机正在减速时在多个连续的发动机转速下获取位置编码器数据。 然后，识别与获取的位置编码器数据一致的趋势（207），该行为与每发动机转数小于一个周期的频率发生。 接下来，根据去除所识别的趋势来生成校正位置编码器数据（208）（207）。

公开(公告)号：WO1996024106A1

公开(公告)日：1996-08-08

申请号：PCT/US1995015011

申请日：1995-11-21

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  MCCLISH, Michael, A. ,  PLEE, Steven, L. ,  REMBOSKI, Donald, J., Jr. ,  LYNCH, Marvin, L. ,  SONDAY, Susan, K.

IPC: G06F19/00

CPC classification number: G01M15/11 ,  F02D41/0097 ,  G01P3/489 ,  G01P15/00

Abstract: A method and apparatus for adaptive profile correction for rotating position encoders in reciprocating engines measures a raw engine speed derived from a rotating position encoder (107) driven by a reciprocating engine. A first corrected engine speed (1103) is provided dependent on the raw engine speed and a predetermined first encoder profile while the engine is operating bounded within a first speed range (905), and a second corrected engine speed (1103) is provided dependent on the raw engine speed and a predetermined second encoder profile while the engine is operating bounded within a second speed range (903). A microcontroller (1205) derives a processed acceleration signal (1207) dependent on the measured engine speed and provides it to an external acceleration based misfire detection system (1201) which provides a misfire indication (1203) back to the microcontroller (1205) if a combustion misfire behaviour is detected in the processed acceleration signal (1207).

Abstract translation: 用于在往复式发动机中旋转位置编码器的自适应轮廓校正的方法和装置测量从由往复式发动机驱动的旋转位置编码器（107）得到的原始发动机速度。 当发动机在第一速度范围（905）内操作有界时，第一校正发动机转速（1103）取决于原始发动机速度和预定的第一编码器轮廓，并且第二校正发动机转速（1103）依赖于 原始发动机速度和预定的第二编码器轮廓，同时发动机在第二速度范围（903）内操作有界。 微控制器（1205）根据所测量的发动机速度导出经处理的加速度信号（1207），并将其提供给外部加速度失火检测系统（1201），该失火检测系统（1201）将失火指示（1203）提供给微控制器（1205），如果 在处理的加速度信号（1207）中检测到燃烧失火行为。

公开(公告)号：EP0721627B1

公开(公告)日：2004-05-06

申请号：EP95923686.0

申请日：1995-06-05

Applicant: MOTOROLA, INC.

Inventor： REMBOSKI, Donald, J., Jr. ,  PLEE, Steven, L. ,  LYNCH, Marvin, L. ,  McCLISH, Michael, A.

IPC: G06F19/00 ,  G06G7/70 ,  F02B77/00 ,  F02M7/00 ,  G01L3/26 ,  G01L5/13 ,  G01M15/00

CPC classification number: G01M15/11

Abstract: An apparatus, and a corresponding method, for determining misfire in a reciprocating engine (201) operates on a selectable quantity of discrete sampled acceleration signals (217) that are indicative of acceleration behavior of the reciprocating engine (201). A decimation device (219) selects a quantity (111) of the discrete sampled acceleration signals (217) dependent on an engine family, and optionally engine operating conditions such as speed and load. An acceleration signal (311) is selected from the sampled acceleration signals (217), preferably the sample having the most negative magnitude. A misfire determination device (205) provides a misfire indication (207) dependent on the selected acceleration signal (311).

公开(公告)号：EP0823046A1

公开(公告)日：1998-02-11

申请号：EP96944333.0

申请日：1996-12-13

Applicant: MOTOROLA, INC.

Inventor： LYNCH, Marvin, L. ,  MCCLISH, Michael, A. ,  SELFE, Margaret, A. ,  STEINL, Gregory ,  REMBOSKI, Donald, J., Jr.

IPC: G01M15

CPC classification number: G01M15/09 ,  F02D41/22 ,  F02D41/28 ,  F02D2041/1432 ,  F02D2041/286 ,  F02D2200/0406 ,  F02D2200/1015 ,  Y02T10/40

Abstract: A misfire detection system and method measures fluctuations of air charge ingested into an engine (303) preferably as fluctuations of the engine's intake air pressure or as fluctuations of the mass air flow. A misfire indication (337) is provided dependent on a behavior of the fluctuations of air charge. Preferably, to eliminate errors associated with engine transient operating conditions, such as acceleration, the fluctuations of air charge are differentiated (325) before a misfire detection mechanism (333) is used to determine misfire behavior.

Abstract translation: 失火检测系统和方法测量摄入发动机303的空气电荷的波动，优选地作为发动机进气压力的波动或者质量气流的波动。 取决于空气充量波动的行为提供失火指示337。 优选地，为了消除与诸如加速度的发动机瞬态操作条件相关联的误差，在使用失火检测机构333以确定失火行为之前，将空气充气的波动区分325。

公开(公告)号：EP0883737A1

公开(公告)日：1998-12-16

申请号：EP97911781.0

申请日：1997-10-15

Applicant: MOTOROLA INC.

Inventor： NABER, Jeffrey, D. ,  REMBOSKI, Donald, J., Jr.

IPC: F01N11

CPC classification number: F01N11/007 ,  F01N11/00 ,  F01N2550/02 ,  F01N2900/0421 ,  F01N2900/0422 ,  Y02T10/47

Abstract: 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).