公开(公告)号：US06715340B2

公开(公告)日：2004-04-06

申请号：US09953131

申请日：2001-09-17

申请人： Tatsunori Yamada ,  Yasushi Sakakura

发明人： Tatsunori Yamada ,  Yasushi Sakakura

IPC分类号： G01L2322

CPC分类号： F02P17/12 ,  F02D41/1498 ,  F02D2200/1015

摘要： A misfiring detection apparatus including a comparison unit 22 and a time counting unit 24 which accumulates periods of time during which the ion current flowing between the center electrode 10a and the ground electrode 10b of a spark plug 10 exceeds a predetermined current value; and an ECU 26 which judges that misfiring has occurred when a total of the accumulated periods is not greater than a predetermined value. The ion current is thus determined as a cumulative value of ion current generation periods. Therefore, even when the ion current contains a discharge noise component, the discharge noise component having a short duration accounts for only a small portion of the cumulative value, so that the influence of the discharge noise component on misfiring detection can be reduced. As a result, misfiring detection can be performed with improved accuracy.

摘要翻译： 一种失火检测装置，包括比较单元22和时间计数单元24，其累积在火花塞10的中心电极10a和接地电极10b之间流动的离子电流超过预定电流值的时间段; 以及当总共累积期间不大于预定值时，判断出发生了点火的ECU26。 因此，离子电流被确定为离子电流产生周期的累积值。 因此，即使当离子电流含有放电噪声成分时，具有短持续时间的放电噪声分量只占累积值的一小部分，从而可以降低放电噪声分量对失火检测的影响。 结果，可以以提高的精度执行失火检测。

公开(公告)号：US06505500B1

公开(公告)日：2003-01-14

申请号：US09532409

申请日：2000-03-22

申请人： Bengt Elgh ,  Michael Georghiou ,  Christian Carlsson ,  Thomas Meldert ,  Magnus Glavmo

发明人： Bengt Elgh ,  Michael Georghiou ,  Christian Carlsson ,  Thomas Meldert ,  Magnus Glavmo

IPC分类号： G01L2322

CPC分类号： F02D35/021

摘要： The invention provides an arrangement for detecting ionization in the combustion chamber of a combustion motor where the fuel self-ignites by means of compression, as well as associated measurement device and calibration devices. A measurement tip extends substantially down into a main combustion chamber, which provides access to the portion of the combustion chamber where combustion first starts. The measurement device has a simple construction with good thermal conductivity. Using the calibration device according to the invention, the performance of the measurement device can be optimized from the point of view of control in different combustion motors in which the characteristic ion stream signal for each type of motor can be correlated against pressure data from combustion and used to calibrate the motor. The arrangement, the measurement device, and the calibration device allow implementation of ion-stream measurement in combustion motors of the diesel type, in which the start of combustion, as well as very small amounts of injected fuel, may be detected without lag and with high accuracy.

摘要翻译： 本发明提供了一种用于检测燃料电动机的燃烧室中的离子化的装置，其中燃料通过压缩自身点燃，以及相关联的测量装置和校准装置。 测量尖端基本上向下延伸到主燃烧室，主燃烧室提供对燃烧首先开始的燃烧室的部分的通路。 测量装置结构简单，导热性好。 使用根据本发明的校准装置，可以从不同燃烧电动机的控制的角度优化测量装置的性能，其中每种类型的电动机的特征离子流信号可以与来自燃烧的压力数据相关联， 用于校准电机。 该装置，测量装置和校准装置允许在柴油类型的燃烧电动机中执行离子流测量，其中燃烧开始以及非常少量的喷射燃料可以被无滞后地检测，并且与 高准确率。

公开(公告)号：US06439029B2

公开(公告)日：2002-08-27

申请号：US09783019

申请日：2001-02-15

申请人： Morito Asano ,  Atsushi Ito ,  Teruji Ichihara ,  Yoshiyuki Fukumura

发明人： Morito Asano ,  Atsushi Ito ,  Teruji Ichihara ,  Yoshiyuki Fukumura

IPC分类号： G01L2322

CPC分类号： G01L23/221 ,  F02P17/12 ,  F02P2017/128 ,  G01L23/225

摘要： There is provided an improved method of detecting an occurrence of a knock in an internal combustion engine by detecting an ionic current flowing in a cylinder of the engine from initiation of combustion therein and judging a knock component overlapping the ionic current based on a judging level, the method including the steps of: detecting a peak value of the ionic current; and relatively correcting at least one of the judging level and the knock component based on the peak value thus detected so as to make more difficult a judgment of whether the knock occurs or not as the detected peak value increases.

摘要翻译： 提供了一种通过检测在发动机的气缸中流动的离子电流从其燃烧开始来检测内燃机中的爆震发生的改进方法，并且基于判断水平判断与离子电流重叠的爆震分量， 该方法包括以下步骤：检测离子电流的峰值; 并且基于这样检测的峰值相对地校正判断水平和爆震分量中的至少一个，以便随着检测到的峰值增加而判断是否发生爆震更加困难。

公开(公告)号：US06411886B1

公开(公告)日：2002-06-25

申请号：US09446988

申请日：2000-03-22

申请人： Gianluca Morra ,  Stefano Re Fiorentin ,  Paolo Tubetti ,  Gianpiero Einaudi

发明人： Gianluca Morra ,  Stefano Re Fiorentin ,  Paolo Tubetti ,  Gianpiero Einaudi

IPC分类号： G01L2322

CPC分类号： G01L23/225 ,  F02P5/1527 ,  Y02T10/46

摘要： A method of detecting and controlling detonation, including the steps of: generating (10) a vibration signal (D) proportional to the intensity of vibration on the crankcase; wide-band-filtering (11) the vibration signal (D) to generate a first intermediate signal; rectifying (12) the first intermediate signal to generate a second intermediate signal; integrating (13) the second intermediate signal to generate a first numeric value; calculating (14) a logarithm of the first numeric value to obtain a second numeric value (Xi); calculating (16) a difference between the second numeric value (Xi) and the mean value (&mgr;i) to obtain a third numeric value (&dgr;i) with a predetermined threshold value (&dgr;o); determining (18) the presence of detonation in the event the third numeric value (&dgr;i) has a first predetermined relationship with the predetermined threshold value (&dgr;o); forming (19, 21) a detonation index (Ii) indicating the behavior of the engine in terms of detonation; and obtaining (22) a spark lead correction value (CAi) as a function of the detonation index (Ii).

摘要翻译： 一种检测和控制爆震的方法，包括以下步骤：产生（10）与曲轴箱上的振动强度成比例的振动信号（D）; 宽带滤波（11）振动信号（D）以产生第一中间信号; 整流（12）第一中间信号以产生第二中间信号; 对第二中间信号进行积分（13）以产生第一数值; 计算（14）所述第一数值的对数以获得第二数值（Xi）; 计算（16）第二数值（Xi）和平均值（μi）之间的差以获得具有预定阈值（deltao）的第三数值（deltai）; 在第三数值（deltai）与预定阈值（deltao）具有第一预定关系的情况下，确定（18）爆震的存在; 形成（19,21）指示发动机在爆炸方面的行为的引爆指数（Ii）; 并且获得（22）作为爆轰指数（Ii）的函数的火花引线校正值（CAi）。

公开(公告)号：US06220078B1

公开(公告)日：2001-04-24

申请号：US09323788

申请日：1999-06-02

申请人： Hartmut Brammer ,  Wolfgang Schmidt ,  Holger Krebs

发明人： Hartmut Brammer ,  Wolfgang Schmidt ,  Holger Krebs

IPC分类号： G01L2322

CPC分类号： G10K11/004 ,  G01D11/30 ,  G01L23/222

摘要： A vibration pickup has a pressure sleeve mountable directly or indirectly on a component causing vibrations, a spring, a sensor element which is held radially outwardly on the pressure sleeve with an axial tensioning by the spring and is electrically contactable, a wedge element provided between an inner periphery of the spring and an outer wall of the pressure sleeve, the wedge element being introduced axially with its wedge-shaped tipped side and radially clamps the spring in an end position and also holds components with the sensor element under an axial tensioning.

摘要翻译： 振动拾取器具有直接或间接地安装在引起振动的部件上的压力套筒，弹簧，传感器元件，其通过弹簧的轴向张紧并且可电接触地径向向外保持在压力套筒上，该元件设置在 弹簧的内周和压力套筒的外壁，楔形元件沿其楔形倾斜侧面轴向引入，并将弹簧径向夹紧在终端位置，并且还将传感器元件的部件保持在轴向张力之下。

公开(公告)号：US06185984B1

公开(公告)日：2001-02-13

申请号：US09495484

申请日：2000-02-01

申请人： Yasuhiro Takahashi

发明人： Yasuhiro Takahashi

IPC分类号： G01L2322

CPC分类号： G01L23/225

摘要： A device for detecting the knocking of an internal combustion engine maintaining a favorable knock-detecting state even when a noise component having a small amplitude and lasting long is superposed on an ionic current detection signal. The device comprises a means 1 for detecting the ionic current i that flows through a spark plug 8, a filter 2 means for picking up knock signals Ki from the ionic current, a means 22 for judging the knocking state based on the knock signals, a means 11 for operating a first integrated value Km1 of the knock signals, a means 21 for setting a basic threshold value TH based on the first integrated value, a means 12 for operating a second integrated value Km2 by integrating only those knock signals having amplitudes larger than a lower-limit level among the knock signals, and a means 32 for setting the basic threshold value as the lower-limit level, wherein the occurrence of knocking is judged based on the second integrated value.

摘要翻译： 即使在离子电流检测信号上叠加具有小振幅和持续时间长的噪声成分的情况下，也能够检测内燃机的爆震保持良好的爆震检测状态的装置。 该装置包括用于检测流过火花塞8的离子电流i的装置1，用于从离子电流拾取爆震信号Ki的滤波器2，用于基于爆震信号判断爆震状态的装置22， 用于操作爆震信号的第一积分值Km1的装置11，用于基于第一积分值设置基本阈值TH的装置21，用于通过仅对具有较大振幅的那些振荡信号进行积分来操作第二积分值Km2的装置12 比敲击信号中的下限级别以及用于将基本阈值设定为下限级别的装置32，其中基于第二积分值来判断爆震的发生。

公开(公告)号：US06813933B1

公开(公告)日：2004-11-09

申请号：US10129690

申请日：2002-11-05

申请人： Markus Ketterer ,  Achim Guenther ,  Juergen Foerster

发明人： Markus Ketterer ,  Achim Guenther ,  Juergen Foerster

IPC分类号： G01L2322

CPC分类号： F02P17/12

摘要： A method is presented for positioning a measurement window in time for analysis of ionic current signals, detected at internal combustion engines via the electrodes of a spark plug, for an ignition system having an ignition transformer, e.g., a.c. ignition or in a capacitor ignition system or inductive transistor ignition or inductive coil ignition or inductive coil ignition having a limited spark duration, the ignition systems being combined with a measurement device for an ionic current at the secondary winding on the ground side, each spark plug being allocated one ignition transformer, and the detection of the end of a spark and the opening of the measurement window for the ionic current signal taking place as a function of the end of the spark.

公开(公告)号：US06789409B2

公开(公告)日：2004-09-14

申请号：US10418097

申请日：2003-04-18

申请人： Kimihiko Tanaya

发明人： Kimihiko Tanaya

IPC分类号： G01L2322

CPC分类号： F02P17/12 ,  F02P5/152 ,  F02P2017/128 ,  G01L23/225 ,  Y02T10/46

摘要： A knock detection apparatus for an internal combustion engine is provided which accurately distinguishes knock from noise even when noise having a frequency component identical to a knock frequency component is superposed on an ion current signal. The apparatus includes: an ion-current detection device for applying a voltage to electrodes provided in a combustion chamber of the internal combustion engine and for detecting an ion current flowing between the electrodes via ions generated following combustion in the combustion chamber; a knock detection device for detecting knock occurring following an abnormal rise in either pressure or temperature in the combustion chamber of the internal combustion engine; a center-of-gravity calculation device for calculating a gravity position of an ion current waveform detected by the ion-current detection device; and a knock determination device for determining knock or noise in accordance with outputs of the knock detection device and the center-of-gravity calculation device.

公开(公告)号：US06701775B1

公开(公告)日：2004-03-09

申请号：US10077411

申请日：2002-02-15

申请人： Frank W. Popielas ,  Howard M. Robins ,  Jeffery A. Foster ,  James S. Pietraski ,  Lawrence E. Peck

发明人： Frank W. Popielas ,  Howard M. Robins ,  Jeffery A. Foster ,  James S. Pietraski ,  Lawrence E. Peck

IPC分类号： G01L2322

CPC分类号： G01L9/0077 ,  G01L19/0645 ,  G01L23/16

摘要： Sensor apparatus for a multiple layer steel (MLS) cylinder head gasket measures combustion pressures for detecting engine conditions. A membrane is positioned at one end of an elongated metal tube, and the membrane end of the tube engages a cylinder bore boundary. A fiber optical sensor apparatus is fixed within the tube, and communicates with cyclic combustion events via the membrane. In one disclosed embodiment, optical wires from sensor apparatus situated at each engine bore are bundled into a common groove machined into an extended spacer layer radially outwardly of the conventional boundary of the gasket. The tube protects the sensor apparatus from damage of sealing stress on the gasket, and particularly at the bore perimeter. Each tube lies in a separate groove in the spacer layer that terminates at the bore boundary. A converter changes optical signals received from the apparatus into electrical signals for transmittal to a controller.

摘要翻译： 用于多层钢（MLS）气缸盖垫片的传感器装置测量用于检测发动机状况的燃烧压力。 膜位于细长金属管的一端，并且管的膜端接合缸孔边界。 纤维光学传感器装置固定在管内，通过膜与循环燃烧事件相通。 在一个公开的实施例中，位于每个发动机孔处的来自传感器装置的光导线被捆扎成公共凹槽，其被加工成径向向外的垫圈常规边界的延伸间隔层。 该管保护传感器装置不会损坏垫圈上的密封应力，特别是在孔周边。 每个管位于间隔层中的在孔边界处终止的单独凹槽。 A转换器将从装置接收的光信号改变为用于发送到控制器的电信号。

公开(公告)号：US06655191B2

公开(公告)日：2003-12-02

申请号：US09892415

申请日：2001-06-27

申请人： Peter Hohner ,  Klaus Knolmayer ,  Joerg Miroll ,  Linhard Niemetz

发明人： Peter Hohner ,  Klaus Knolmayer ,  Joerg Miroll ,  Linhard Niemetz

IPC分类号： G01L2322

CPC分类号： F02P17/12 ,  F02P2017/128 ,  G01L23/22 ,  G01L23/225

摘要： In a method for detecting knocking combustion during the operation of an internal combustion engine with a device for measuring the ionic current, the raw ionic current signal or the evaluated value of the knocking intensity are normalized. This enables the value of the knocking intensity to be reliably compared with a threshold value. The normalization avoids the falsifying influence of large intensity fluctuations of the raw ionic current signal from one combustion cycle to the next without any relation to the true knocking intensity.

摘要翻译： 在利用用于测量离子电流的装置的内燃机操作期间检测爆震燃烧的方法中，原始离子电流信号或爆震强度的评估值被归一化。 这使得可以将爆震强度的值可靠地与阈值进行比较。 归一化避免了从一个燃烧循环到下一个燃烧循环的原始离子电流信号的大强度波动的伪造影响，与真实爆震强度无任何关系。