公开(公告)号：US06752005B2

公开(公告)日：2004-06-22

申请号：US10422806

申请日：2003-04-25

申请人： Sadamitsu Harada ,  Katsuki Aoi ,  Tomohiro Hirata ,  Yasuo Ito

发明人： Sadamitsu Harada ,  Katsuki Aoi ,  Tomohiro Hirata ,  Yasuo Ito

IPC分类号： G01L2322

CPC分类号： G01L23/222

摘要： A knock sensor comprises a sensor body having a metallic shell including a cylindrical portion and a flange portion formed at an end of the cylindrical portion, an annular piezoelectric element fitted around the cylindrical portion and an annular weighting member fitted around the cylindrical portion to hold the piezoelectric element between the weighting member and the flange portion, and a resin-molded sensor casing arranged circumferentially around the sensor body. The resin-molded sensor casing includes a weighting portion located nearer to the weighting member than to the piezoelectric element with respect to an axial direction of the cylindrical portion, and at least the weighting portion of the resin-molded sensor casing is made of a resin containing at least one of metal powder and metal oxide powder and has a density of 2.0 g/cm3 or higher.

公开(公告)号：US06679100B2

公开(公告)日：2004-01-20

申请号：US10264068

申请日：2002-10-03

申请人： Ronald J. Kiess ,  Lewis Henry Little ,  Marion E. Ellis ,  Raymond O. Butler, Jr.

发明人： Ronald J. Kiess ,  Lewis Henry Little ,  Marion E. Ellis ,  Raymond O. Butler, Jr.

IPC分类号： G01L2322

CPC分类号： G01L23/18 ,  G01L23/22

摘要： A thick film resistor strain gauge is applied to a stainless steel shell portion of a spark plug. There are two preferable ways of applying a thick film resistor to the metal shell. In a first embodiment, the thick film resistor may be directly printed on to the shell portion with special screen printing equipment. In a second embodiment, the thick film resistor is printed and applied as a decal to the shell portion. The thick film resistors may be included in a quarter, a half, or a full wheatstone bridge strain gauge circuit. One of two embodiments of an automatic drift compensating circuit is used to determine the change in resistance experienced by the thick film resistors affixed to the spark plug. Either one of the automatic drift compensation circuits output a voltage signal which is proportional to the pressure changes occurring inside the engine cylinder into which the spark plug is threaded.

公开(公告)号：US06647760B2

公开(公告)日：2003-11-18

申请号：US09788962

申请日：2001-02-20

申请人： Wolfgang-Michael Mueller ,  Uwe Konzelmann

发明人： Wolfgang-Michael Mueller ,  Uwe Konzelmann

IPC分类号： G01L2322

CPC分类号： G01L23/222

摘要： A vibration pickup has a pressure sleeve which is placeable on a component causing vibrations, a sensor element which detects the vibration, a seismic mass which is placeable outside of the sleeve on a support surface of the sensor element with an axial pretensioning, so that the sensor element is held between the seismic mass and a flange-like segment of the pressure sleeve, the seismic mass and the pressure sleeve being formed as a one-piece integral component.

摘要翻译： 振动拾取器具有压力套筒，其可放置在引起振动的部件上，检测振动的传感器元件，具有轴向预张紧的可在套筒外部放置在传感器元件的支撑表面上的抗震质量， 传感器元件被保持在地震质量块和压力套筒的法兰状段之间，地震质量块和压力套筒形成为一体的整体部件。

公开(公告)号：US06546328B1

公开(公告)日：2003-04-08

申请号：US09753438

申请日：2001-01-03

申请人： James M. Slicker

发明人： James M. Slicker

IPC分类号： G01L2322

CPC分类号： G01L23/225 ,  G01M15/11

摘要： The invention relates to a system for detection of combustion anomalies in an internal combustion engine, and includes a crank angle indicator, a vibration sensor, and a signal processor, wherein the signal processor receives signals from the indicator and the sensor, performs a wavelet transform analysis of the signals from the sensor to develop a vibration frequency signature on a time scale, compares the vibration frequency signature to a predetermined value to determine the existence of anomalies in the combustion process, and compares the time scale of the vibration frequency signature to the signal from the indicator to determine which of a plurality of cylinders of the internal combustion engine is exhibiting the combustion anomaly.

摘要翻译： 本发明涉及一种用于检测内燃机燃烧异常的系统，包括曲柄角指示器，振动传感器和信号处理器，其中信号处理器从指示器和传感器接收信号，执行小波变换 分析来自传感器的信号以在时间尺度上产生振动频率特征，将振动频率特征与预定值进行比较，以确定燃烧过程中存在异常，并将振动频率特征的时间尺度与 信号，以确定内燃机的多个气缸中的哪一个呈现燃烧异常。

公开(公告)号：US06230546B1

公开(公告)日：2001-05-15

申请号：US09211460

申请日：1998-12-14

申请人： Hartung Wilstermann ,  Peter Hohner ,  Peter Bertelshofer ,  Juergen Schenk

发明人： Hartung Wilstermann ,  Peter Hohner ,  Peter Bertelshofer ,  Juergen Schenk

IPC分类号： G01L2322

CPC分类号： F02P17/12 ,  G01L23/225

摘要： A method and an apparatus for detecting knocking combustion in an internal combustion engine, by evaluating the ionic current signal sensed in the combustion chamber, is especially adapted to correct or compensate the ionic current signal for longterm variations arising therein, for example due to variations in the composition of the fuel as a result of contamination with metallic components or the like. Thereby, erroneous knock recognition is prevented. To achieve this, a frequency-filtered time-sampled knocking component integral of the ionic current signal generated in the present combustion cycle is multiplied by a correction value determined from at least one integral value of the ionic current signal generated during at least one prior combustion cycle. The correction value is preferably a time-weighted combination of plural difference values that are respectively determined by subtracting an average integrated value of the ionic current signal from the knocking component integral of the ionic current signal in plural prior combustion cycles, and that are stored in successive positions of a shift register. If the final corrected knocking component integral falls outside of an allowable range, a knock recognition signal is released.

摘要翻译： 用于通过评估在燃烧室中感测到的离子电流信号来检测内燃机中的爆震燃烧的方法和装置特别适用于校正或补偿离子电流信号用于在其中产生的长期变化，例如由于 由于金属部件等的污染而导致的燃料的组成。 从而防止了错误的敲击识别。 为了实现这一点，在当前燃烧循环中产生的离子电流信号的频率滤波时间采样爆震分量积分乘以由在至少一个先前燃烧期间产生的离子电流信号的至少一个积分值确定的校正值 周期。 校正值优选地是多个差分值的时间加权组合，其分别通过从多个先前燃烧循环中的离子电流信号的爆震分量积分中减去离子电流信号的平均积分值而确定，并且存储在 移位寄存器的连续位置。 如果最终校正的敲击分量积分落在允许范围之外，则释放敲击识别信号。

公开(公告)号：US06799451B2

公开(公告)日：2004-10-05

申请号：US09799362

申请日：2001-03-05

申请人： Ronald J. Kiess ,  Robert A. Noel ,  James Tordt Wright ,  James Alva Boyer ,  Matthew W. Bell

发明人： Ronald J. Kiess ,  Robert A. Noel ,  James Tordt Wright ,  James Alva Boyer ,  Matthew W. Bell

IPC分类号： G01L2322

CPC分类号： G01L23/22 ,  G01L23/18

摘要： An ignition coil, spark plug, and pressure sensor for an internal combustion engine are, in a preferred embodiment, integrated into a single assembly and mounted directly on a plug hole of an internal combustion engine. A hard spark plug shell serves as a pressure member and on which a strain gage is affixed. Changes in the pressure in the combustion chamber deform the shell, causing a corresponding change in the resistance of the strain gage. A bridge circuit or the like is used to measure the resistance change thereby providing a direct indication of cylinder pressure.

摘要翻译： 在优选实施例中，用于内燃机的点火线圈，火花塞和压力传感器被集成到单个组件中并直接安装在内燃机的插头孔上。 硬火花塞壳用作压力构件，并在其上固定应变计。 燃烧室中的压力变化使壳体变形，导致应变计的电阻相应变化。 桥接电路等用于测量电阻变化，从而提供气缸压力的直接指示。

公开(公告)号：US06786078B2

公开(公告)日：2004-09-07

申请号：US10149845

申请日：2002-10-17

申请人： Hartmut Brammer

发明人： Hartmut Brammer

IPC分类号： G01L2322

CPC分类号： G01L23/22 ,  G01N2291/02827 ,  G01P15/0907 ,  G01P15/0915

摘要： A vibration sensor having a pressure sleeve in which the pressure sleeve may be mounted under pressure on a component causing vibration. To detect a vibration signal, e.g., in the case of a knock sensor, a sensory system is held by a seismic mass above it on the outside of the pressure sleeve via a screw connection on a contact face of the pressure sleeve under an axial prestress in the direction of the sensory system. The seismic mass has an inside thread and may be screwed onto the sensory system to produce the axial prestress in the direction of the sensory system. A seismic mass or the sensory system has at least two opposing grooves running radially opposite one another, so that the plastic may enter an interior space between the sensory system and the pressure sleeve during extrusion through these grooves.

摘要翻译： 一种具有压力套筒的振动传感器，其中压力套筒可以在压力下安装在引起振动的部件上。 为了检测振动信号，例如在爆震传感器的情况下，感测系统通过在轴向预应力下的压力套筒的接触面上的螺纹连接在压力套筒的外部由其上方的地震块保持 在感官系统的方向。 震动块具有内螺纹，并且可以旋拧到感觉系统上以在感觉系统的方向上产生轴向预应力。 地震块或感觉系统具有至少两个彼此径向相对的相对的沟槽，使得在通过这些沟槽挤压过程中，塑料可能进入感测系统和压力套筒之间的内部空间。

公开(公告)号：US06776026B1

公开(公告)日：2004-08-17

申请号：US10457200

申请日：2003-06-09

申请人： Luis F. Barron

发明人： Luis F. Barron

IPC分类号： G01L2322

CPC分类号： G01L23/222

摘要： A knock sensor, comprising: a sleeve; a piezoelectric transducer disposed about the sleeve, the piezoelectric transducer being insulated from the sleeve and in electrical communication with a first terminal and a second terminal; wherein the piezoelectric transducer is preloaded by a combination seismic mass and nut configured to threadingly engage a portion of the sleeve and provide a mass to the knock sensor, the combination seismic mass and nut being integrally formed out of the same material.

摘要翻译： 爆震传感器，包括：套筒; 设置在所述套筒周围的压电换能器，所述压电换能器与所述套筒绝缘并且与第一端子和第二端子电连通; 其中所述压电换能器由组合的地震质量和螺母预加载，所述组合地震质量和螺母构造成螺纹地接合所述套筒的一部分并且向所述爆震传感器提供质量，所述组合地震质量和螺母由相同材料一体地形成。

公开(公告)号：US06591660B1

公开(公告)日：2003-07-15

申请号：US09856388

申请日：2001-07-19

申请人： Steffen Franke ,  Oskar Torno ,  Axel Heinstein ,  Carsten Kluth ,  Werner Haeming ,  Michael Baeuerle

发明人： Steffen Franke ,  Oskar Torno ,  Axel Heinstein ,  Carsten Kluth ,  Werner Haeming ,  Michael Baeuerle

IPC分类号： G01L2322

CPC分类号： G01L23/225 ,  F02D35/027 ,  F02D2041/1432 ,  F02P5/1521 ,  G01L23/22 ,  G01L23/221 ,  Y02T10/46

摘要： A method for knock detection in an internal combustion engine is disclosed, in which the output signal of at least one knock sensor, which is associated with the engine, is evaluated with the aid of an evaluation device. Knocking is detected when the prepared signal of the knock sensor exceeds a predeterminable reference level. The calculation of the input signal of the reference level tracking takes place as a function of whether the internal combustion engine is in a dynamic operating state or not, wherein in order to calculate the reference level in the event of dynamics, measurement values are also used which were determined when knocking was detected.

摘要翻译： 公开了一种在内燃机中进行爆震检测的方法，其中借助于评估装置评估与发动机相关联的至少一个爆震传感器的输出信号。 当爆震传感器的准备信号超过可预定的参考水平时，检测到敲击。 参考电平跟踪的输入信号的计算是作为内燃机是否处于动态运行状态的函数进行的，其中为了在动力学的情况下计算参考电平，也使用测量值 当检测到敲门时确定。

公开(公告)号：US06360587B1

公开(公告)日：2002-03-26

申请号：US09635964

申请日：2000-08-10

申请人： Robert A. Noel

发明人： Robert A. Noel

IPC分类号： G01L2322

CPC分类号： G01L23/225 ,  F02D35/021 ,  F02P2017/125 ,  G01L23/221

摘要： An apparatus for detecting a pre-ignition combustion condition in an internal combustion engine. An ion sensing circuit measures an ion current during the ignition coil charging time. An ion current level above a predetermined reference level indicates pre-ignition combustion. A powertrain control module is responsive to a pre-ignition signal for discontinuing delivery of fuel to the cylinder in which the ion current was measured.

摘要翻译： 一种用于检测内燃机中的点火前燃烧状态的装置。 离子感测电路在点火线圈充电时间期间测量离子电流。 高于预定参考水平的离子电流水平指示预燃燃烧。 动力总成控制模块响应于预燃点信号，用于停止向测量离子电流的气缸输送燃料。