利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

20 条记录 (耗时 0.026 秒)

    Method of detecting low compression pressure responsive to crankshaft acceleration measurement and apparatus therefor
    1.
    发明授权
    Method of detecting low compression pressure responsive to crankshaft acceleration measurement and apparatus therefor 失效
    根据曲轴加速度测量检测低压缩压力的方法及其装置

    公开(公告)号：US5915272A

    公开(公告)日：1999-06-22

    申请号：US100418

    申请日：1993-08-02

    申请人： John F. Foley ,  Steven L. Plee ,  Donald J. Remboski, Jr.

    发明人： John F. Foley ,  Steven L. Plee ,  Donald J. Remboski, Jr.

    IPC分类号： G01M15/04 ,  G01M15/09 ,  G01M15/00

    CPC分类号： G01M15/046 ,  G01M15/09 ,  F02D2200/1015

    摘要： A method of detecting low compression pressure by interpreting acceleration of an engine crankshaft (201) is detailed. In a preferred embodiment, the method teaches measurement of intake manifold pressure. Then, a first engine crankshaft acceleration is measured, preferably proximate a maximum rate of compression, for a cylinder (113), and a first variable (307) indicative of the first engine crankshaft acceleration is provided. Then, a second engine crankshaft acceleration is measured, preferably proximate the cylinder's top-dead-center position (105), and a second variable (311) indicative of the second engine crankshaft acceleration is provided. Then, the method combines (313) the intake manifold pressure, the first variable, and the second variable and provides a compression pressure variable as a function of the combined variables. Other embodiments include subsets of the above variables to provide a compression pressure variable as a function of the combined variables. In all of the embodiments, a low compression pressure may be indicated (317) when the compression pressure variable does not exceed a predetermined limit for the associated cylinder. An apparatus is also detailed in support of the preferred method.

    摘要翻译： 详细说明通过解释发动机曲轴（201）的加速度来检测低压缩压力的方法。 在优选实施例中，该方法教导了进气歧管压力的测量。 然后，针对气缸（113）测量第一发动机曲轴加速度，优选接近最大压缩速率，并且提供表示第一发动机曲轴加速度的第一变量（307）。 然后，测量第二发动机曲轴加速度，优选地靠近气缸的上止点位置（105），并且提供表示第二发动机曲轴加速度的第二变量（311）。 然后，该方法结合（313）进气歧管压力，第一变量和第二变量，并提供作为组合变量的函数的压缩压力变量。 其他实施例包括上述变量的子集，以提供作为组合变量的函数的压缩压力变量。 在所有实施例中，当压缩压力变量不超过关联气缸的预定极限时，可以指示低压缩压力（317）。 还支持优选方法的装置也是详细的。

    Spectral misfire detection system and method therefor
    2.
    发明授权
    Spectral misfire detection system and method therefor 失效
    光谱失火检测系统及其方法

    公开(公告)号：US5387253A

    公开(公告)日：1995-02-07

    申请号：US997431

    申请日：1992-12-28

    申请人： Donald J. Remboski, Jr. ,  Kevin J. Bush ,  John F. Foley ,  David Frankowski ,  Steven L. Plee

    发明人： Donald J. Remboski, Jr. ,  Kevin J. Bush ,  John F. Foley ,  David Frankowski ,  Steven L. Plee

    IPC分类号： G01M15/11 ,  G01M15/00

    CPC分类号： G01M15/11

    摘要： A system, and corresponding method, for detecting the presence of a misfire condition by interpreting spectral activity of a running engine includes a device (309, 313) for measuring a characteristic, preferably an acceleration characteristic indicative of the running engine's performance, A spectral discrimination device (319), preferably a digital filter, receives a composite signal (317) provided by the measuring device (309, 313). The digital filter (319) provides a normal firing signal (321), corresponding to spectral energy attributable to a portion of the composite signal (317) representative of a normal firing condition in the running engine, and a misfire signal (323), corresponding to spectral energy attributable to another portion of the composite signal (317) representative of a misfiring condition in the running engine. A comparison device (325) provides and indication of a misfire condition (327) when a magnitude of the misfire signal (323) exceeds a magnitude of the normal firing signal (321).

    摘要翻译： 用于通过解释运行发动机的频谱活动来检测失火状况的存在的系统和相应的方法包括用于测量特性的装置（309,313），优选地是表示运行的发动机性能的加速度特性。A光谱辨别 设备（319），优选数字滤波器，接收由测量设备（309,313）提供的复合信号（317）。 数字滤波器（319）提供正常点火信号（321），其对应于代表运行发动机中正常点火条件的复合信号（317）的一部分的光谱能量，以及失火信号（323），对应于 归因于代表运行发动机中的失火状态的复合信号（317）的另一部分的光谱能量。 当失火信号（323）的大小超过正常点火信号（321）的大小时，比较装置（325）提供和指示失火状态（327）。

    Apparatus and method for variable windowed peak detection in a misfire detection system
    3.
    发明授权
    Apparatus and method for variable windowed peak detection in a misfire detection system 失效
    在失火检测系统中可变窗口峰值检测的装置和方法

    公开(公告)号：US5508927A

    公开(公告)日：1996-04-16

    申请号：US280101

    申请日：1994-07-25

    申请人： Donald J. Remboski, Jr. ,  Steven L. Plee ,  Marvin L. Lynch ,  Michael A. McClish

    发明人： Donald J. Remboski, Jr. ,  Steven L. Plee ,  Marvin L. Lynch ,  Michael A. McClish

    IPC分类号： G01M15/04 ,  F02D45/00 ,  G01M15/11 ,  G06G7/70 ,  G01L3/26

    CPC分类号： G01M15/11

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

    摘要翻译： 用于确定往复式发动机中的失火的装置和相应的方法对可选择量的表示往复式发动机的加速行为的离散采样加速度信号进行操作。 抽取装置选择取决于发动机系列的离散采样加速度信号的数量，以及可选的发动机操作条件，例如速度和负载。 从采样的加速度信号中选择加权信号，优选地，具有最负的幅度的样本。 失火判定装置根据所选择的加速度信号提供失火指示。

    Knock detection system
    7.
    发明授权
    Knock detection system 失效
    敲击检测系统

    公开(公告)号：US5400644A

    公开(公告)日：1995-03-28

    申请号：US953428

    申请日：1992-09-29

    申请人： Donald J. Remboski, Jr. ,  Steven L. Plee ,  David Frankowski ,  Alan Benstead

    发明人： Donald J. Remboski, Jr. ,  Steven L. Plee ,  David Frankowski ,  Alan Benstead

    IPC分类号： G01L23/22

    CPC分类号： G01L23/225

    摘要： A system for detecting the presence of a knock condition by interpreting a broadband spectra signal as measured from an internal combustion engine is described. The system includes a spectra measurement device, preferably an accelerometer (101) mounted to an engine for providing a broadband spectra signal (103) to a knock detector (105). Preferably the knock detector (105) is based on a digital signal processor. The signal (103) is provided simultaneously to knock discrimination elements (405, 409, and 413), that provide a knock spectra signal (415) representative of the average energy within a predetermined knock spectra, and noise discrimination elements (417, 421, and 425), that provide a noise spectra signal (427) representative of average energy within a predetermined noise spectra. The knock spectra signal (415) is combined with the noise spectra signal (427) to provide a knock signal (431) when an engine knocking condition is detected.

    摘要翻译： 描述了通过解释从内燃机测得的宽带频谱信号来检测爆震条件的存在的系统。 该系统包括光谱测量装置，优选地安装到发动机的加速度计（101），用于向爆震检测器（105）提供宽带光谱信号（103）。 优选地，爆震检测器（105）基于数字信号处理器。 同时提供信号（103）以敲击识别元件（405,409和413），其提供表示预定爆震频谱内的平均能量的爆震谱信号（415），以及噪声识别元件（417,421， 和425），其提供表示预定噪声谱内的平均能量的噪声谱信号（427）。 当检测到发动机爆震条件时，爆震频谱信号（415）与噪声频谱信号（427）组合以提供爆震信号（431）。

    Spectral knock detection method and system therefor
    10.
    发明授权
    Spectral knock detection method and system therefor 失效
    光谱爆震检测方法及其系统

    公开(公告)号：US06456927B1

    公开(公告)日：2002-09-24

    申请号：US08035348

    申请日：1993-03-22

    申请人： David Frankowski ,  Neil J. Adams ,  Steven L. Plee ,  Donald J. Remboski, Jr.

    发明人： David Frankowski ,  Neil J. Adams ,  Steven L. Plee ,  Donald J. Remboski, Jr.

    IPC分类号： G06F1900

    CPC分类号： G01L23/225

    摘要： A spectral method, and corresponding system, for knock detection includes acquiring (603) spectral energy associated with vibration caused by a knocking condition from a running engine. Preferably, a sampled data system (105) acquires the spectral energy by converting an output from an accelerometer (101) into data samples (103) in a digital form. Then from the acquired spectral energy, a knock variable is derived from magnitudes of spectral components, representing a characteristic of a combustion chamber located within the running engine. In a preferred embodiment the knock variable is derived from magnitudes of spectral components related by ratios corresponding to Bessel function coefficients. The preferred embodiment includes a Digital Signal Processor (109) applying a Fast Fourier Transform method (503) to estimate a spectral content used to determine the knock variable. Then, a knock indication is provided (509) when the knock variable exceeds a magnitude of a predetermined threshold (507). Other embodiments include provision for providing a knock indication when a knock variable (703) derived from magnitudes of individual spectral components corresponding to characteristic knock spectra associated with acquired spectral energy exceeds a magnitude of a trended time weighted version of the knock variable by a predetermined magnitude (709).

    摘要翻译： 用于爆震检测的光谱方法和相应的系统包括获取（603）与来自运行发动机的爆震条件引起的振动相关的光谱能量。 优选地，采样数据系统（105）通过将加速度计（101）的输出转换成数字形式的数据采样（103）来获取频谱能量。 然后从所获得的光谱能量中，根据频谱分量的大小导出爆震变量，表示位于运行发动机内的燃烧室的特性。 在一个优选实施例中，爆震变量源自与贝塞尔函数系数对应的比率相关的频谱分量的大小。 优选实施例包括应用快速傅立叶变换方法（503）来估计用于确定爆震变量的频谱含量的数字信号处理器（109）。 然后，当爆震变量超过预定阈值的幅度（507）时，提供敲击指示（509）。 其他实施方案包括当从衍生自对应于与所获得的光谱能量相关联的特征性爆震谱的各个光谱成分的量级的爆震变量（703）超过爆震变量的趋势时间加权版本的预定量值的爆震变量 （709）。