公开(公告)号：US06533921B2

公开(公告)日：2003-03-18

申请号：US09737771

申请日：2000-12-18

申请人： Shigeru Miyata ,  Noriaki Kondo ,  Hiroshi Inagaki

发明人： Shigeru Miyata ,  Noriaki Kondo ,  Hiroshi Inagaki

IPC分类号： G01N27407

CPC分类号： G01N27/417 ,  G01N27/4074 ,  G01N27/419

摘要： Apparatus for detecting the NOx concentration includes a first measurement chamber 20 communicating with the gas under measurement via a diffusion rate defining layer 4d and a second measurement chamber 26 communicating with the first measurement chamber 20 via diffusion limiting layers 6d, 22d. A first pump current IP1 is controlled so that an output of a Vs cell 6 will be equal to the reference voltage VCO for controlling the oxygen concentration in the first measurement chamber 20 to a pre-set low value. A constant voltage is applied across the second pump cell 8 for decomposing the NOx component in the second measurement chamber 26 for pumping out oxygen for detecting the NOx concentration from a second pump current IP2. The sensor temperature is detected from the internal resistance of the Vs cell for controlling the current supplied to the heaters 12, 14. If the temperature of the gas under measurement is changed rapidly, the sensor temperature is changed. The detected second pump current IP2 is corrected depending on an offset of the detected sensor temperature from the target temperature assuring detection of the NOx concentration to high accuracy.

摘要翻译： 用于检测NOx浓度的装置包括通过扩散速率限定层4d与测量的气体连通的第一测量室20和经由扩散限制层6d，22d与第一测量室20连通的第二测量室26。 控制第一泵电流IP1，使得Vs单元6的输出将等于用于将第一测量室20中的氧浓度控制为预定的低值的参考电压VCO。 在第二泵电池8上施加恒定电压，以分解第二测量室26中的NOx组分，以从第二泵电流IP2泵出用于检测NOx浓度的氧气。 从Vs单元的内部电阻检测传感器温度，用于控制供给到加热器12,14的电流。如果测量气体的温度快速变化，则传感器温度变化。 检测到的第二泵电流IP2根据检测到的传感器温度与目标温度的偏移量进行校正，确保将NOx浓度检测到高精度。

公开(公告)号：US06309536B1

公开(公告)日：2001-10-30

申请号：US09172017

申请日：1998-10-14

申请人： Hirosi Inagaki ,  Noriaki Kondo ,  Shigeru Miyata

发明人： Hirosi Inagaki ,  Noriaki Kondo ,  Shigeru Miyata

IPC分类号： G01N27407

CPC分类号： F01N3/0842 ,  B01D53/9495 ,  F01N11/00 ,  F01N2550/02 ,  F01N2550/03 ,  F01N2570/04 ,  F02D41/028 ,  F02D41/146 ,  F02D41/1463 ,  G01N27/417 ,  Y02T10/47

摘要： A method and apparatus for detecting a functional condition of an NOx occlusion catalyst using an NOx sensor. In order to compensate for variations in oxygen concentration of the exhaust gas which would otherwise affect the detected NOx concentration downstream of the NOx occlusion catalyst, a relative value is calculated as the difference between the detected NOx concentration and the value of the detected NOx concentration initially after start of operation control of an internal combustion engine at a lean air-fuel ratio. The occlusion capability of the NOx occlusion catalyst is judged to have deteriorated when an increase in the relative value exceeds a predetermined value. On the other hand, the NOx occlusion catalyst is judged to have suffered an anomaly when the rate of increase in the relative value becomes greater than a predetermined allowable value.

摘要翻译： 一种使用NOx传感器检测NOx吸留催化剂的功能状态的方法和装置。 为了补偿否则将影响NOx吸留催化剂下游检测到的NOx浓度的排气的氧浓度的变化，计算相对值，作为检测到的NOx浓度与检测到的NOx浓度的初始值之间的差 在内燃机以稀空燃比开始运转控制之后。 当相对值的增加超过预定值时，判断NOx吸留催化剂的闭塞能力已劣化。 另一方面，当相对值的增加率大于预定的允许值时，判断为NOx吸留催化剂发生异常。

公开(公告)号：US06222368B1

公开(公告)日：2001-04-24

申请号：US09238574

申请日：1999-01-28

申请人： Hiroshi Inagaki ,  Noriaki Kondo ,  Shigeru Miyata

发明人： Hiroshi Inagaki ,  Noriaki Kondo ,  Shigeru Miyata

IPC分类号： F02P1700

CPC分类号： F02P17/12 ,  F02P2017/125

摘要： An ion current detection apparatus which can detect ion current with a high degree of accuracy regardless of the presence of voltage damped oscillation and which does not cause contamination of a spark plug. A spark discharge current Isp generated upon spark discharge of a spark plug 10 flows through a charge diode 28, a capacitor 24, and a diode 22, which form a closed loop together with the spark plug 10 and a secondary winding L2 of an ignition coil 12 that constitutes an ignition apparatus. As a result, a Zener diode 26 connected in parallel to these components generates a Zener voltage Vz and thereby charges the capacitor 24. When a preset wait time has elapsed after the ignition timing for starting spark discharge, the discharge switch 30 short-circuits the opposite ends of the charge diode 28 to discharge the capacitor 24, so that a high voltage having a polarity opposite that in the case of spark discharge is applied to the spark plug. An ion current Iio flowing at this time is detected by use of a resistor 22 connected in parallel to the diode 22.

摘要翻译： 一种离子电流检测装置，无论电压阻尼振荡的存在如何，都可以高精度地检测离子电流，并且不会引起火花塞的污染。 在火花塞10的火花放电时产生的火花放电电流Isp流过与火花塞10和点火线圈的次级绕组L2形成闭环的充电二极管28，电容器24和二极管22 12构成点火装置。 结果，与这些部件并联连接的齐纳二极管26产生齐纳电压Vz，从而对电容器24充电。当在启动火花放电的点火正时之后经过预设的等待时间时，放电开关30使 充电二极管28的相对端，以对电容器24进行放电，使得与火花放电的极性相反的高电压被施加到火花塞。 此时流过的离子电流Iio通过使用与二极管22并联连接的电阻器22来检测。

公开(公告)号：US5543716A

公开(公告)日：1996-08-06

申请号：US262654

申请日：1994-06-20

申请人： Shigeru Miyata ,  Yoshitaka Yamada ,  Hideji Yoshida ,  Yoshihiro Matsubara ,  Yasuo Ito

发明人： Shigeru Miyata ,  Yoshitaka Yamada ,  Hideji Yoshida ,  Yoshihiro Matsubara ,  Yasuo Ito

IPC分类号： F02P17/00 ,  F02P17/12 ,  G01R15/16 ,  G01R31/00 ,  G01R1/06 ,  G01R13/42

CPC分类号： G01R15/16 ,  F02P17/12 ,  G01R31/007 ,  F02P2017/006 ,  F02P2017/123

摘要： In a sparkplug voltage probe device in use for an internal combustion engine, an insulator base is attached to the internal combustion engine, an upper surface of the insulator base having a plurality of grooves in which the sparkplug cables are placed. An insulator sheet is embedded in the insulator base. An electrode layer is provided on an upper surface of the insulator base along the grooves to form a static capacity between the electrode layer and the sparkplug cables when the voltage is applied across the spark plugs. On a lower surface of the insulator sheet an electrical shield layer is provided connected to the internal combustion engine by a ground wire. A lead wire electrically connects the electrode plate to a microcomputer so as to analyze the engine burning condition based on the static capacity between the electrode plate and the sparkplug cables.

摘要翻译： 在用于内燃机的火花塞电压探针装置中，绝缘体基座安装在内燃机上，绝缘体基座的上表面具有放置火花塞电缆的多个凹槽。 绝缘体片嵌入绝缘体基座中。 当绝缘体基底的上表面沿沟槽设置时，当跨越火花塞施加电压时，在电极层和火花塞电缆之间形成静电容。 在绝缘片的下表面上，通过接地线连接到内燃机的电屏蔽层。 引线将电极板电连接到微计算机，以基于电极板和火花塞电缆之间的静态容量分析发动机燃烧状况。

公开(公告)号：US5453694A

公开(公告)日：1995-09-26

申请号：US262655

申请日：1994-06-20

申请人： Shigeru Miyata ,  Yoshitaka Yamada ,  Hideji Yoshida ,  Yoshihiro Matsubara ,  Yasuo Ito

发明人： Shigeru Miyata ,  Yoshitaka Yamada ,  Hideji Yoshida ,  Yoshihiro Matsubara ,  Yasuo Ito

IPC分类号： F02P17/00 ,  F02P17/12 ,  G01R15/16 ,  G01R31/00 ,  G01R1/06 ,  G01R15/00 ,  G01R19/165

CPC分类号： G01R15/16 ,  F02P17/12 ,  G01R31/007 ,  F02P2017/006 ,  F02P2017/123

摘要： In a snap-in type spark plug voltage probe device, the insulator base has an upper half and a lower half, both ends of which are integrally connected by means of a flexible portion. The upper half and the lower half have a plurality of grooves in which spark plug cables are placed. The upper half and the lower half are joined together by the flexible portion when in a closed position. The upper half has an opening to receive a protrusion provided on the lower half of the insulator base to maintain the upper half of the insulator base along the grooves, providing static capacity between the electrode layer and the spark plug cables when voltage is applied across the spark plugs. A lead wire electrically connects the electrode layer to a microcomputer so as to analyze the burning condition based on the static capacity between the electrode layer and the spark plug cables. An electrical shield layer is embedded in the insulator base in the proximity of the electrode layer and connected to the internal combustion engine by way of a ground wire located at a side of the electrode layer remote from the grooves so as to electrically shield the electrical layer. An insulator sheet is embedded in the insulator base and located between the electrode layer and the electrical shield layer.

摘要翻译： 在卡扣式火花塞电压探针装置中，绝缘体基座具有上半部和下半部，其两端通过柔性部分一体连接。 上半部和下半部具有放置火花塞电缆的多个槽。 当处于关闭位置时，上半部和下半部通过柔性部分连接在一起。 上半部具有开口以接收设置在绝缘体基座的下半部上的突出部，以沿着凹槽保持绝缘体基座的上半部分，当电压施加在电极层上时，在电极层和火花塞电缆之间提供静态电容 火花塞。 引线将电极层电连接到微型计算机，以基于电极层和火花塞电缆之间的静态容量来分析燃烧状况。 电绝缘层嵌入电极层附近的绝缘体基底中，并通过远离槽的位于电极层一侧的接地线与内燃机连接，以电屏蔽电层 。 绝缘片被嵌入绝缘体基底中，位于电极层和电屏蔽层之间。

公开(公告)号：US5365910A

公开(公告)日：1994-11-22

申请号：US865910

申请日：1992-04-09

申请人： Shigeru Miyata ,  Hideji Yoshida ,  Yoshihiro Matsubara ,  Yasuo Ito

发明人： Shigeru Miyata ,  Hideji Yoshida ,  Yoshihiro Matsubara ,  Yasuo Ito

IPC分类号： F02P11/06 ,  F02P17/00 ,  F02P17/12

CPC分类号： F02P11/06 ,  F02P17/12 ,  F02P2017/006 ,  F02P2017/123 ,  F02P2017/125

摘要： A misfire detector for use in an internal combustion engine has an ignition coil including a primary coil and a secondary coil. An interrupter circuit is provided for on-off actuation of primary current flowing through a primary circuit of the ignition coil. A distributor has a series gap provided in a secondary circuit of the ignition coil, and a spark plug is adapted to be energized from the ignition coil through the series gap of the distributor. A voltage charging circuit works to electrically charge a stray capacity inherent in the spark plug immediately after an end of a spark action of the spark plug. A spark plug voltage detector circuit distinguishes the voltage waveform of more than a predetermined reference voltage level so as to deform the voltage waveform into output signals. On the basis of the width of the output signals, a distinction circuit determines whether or not the spark action ignites an air-fuel mixture in a cylinder of the internal combustion engine.

摘要翻译： 用于内燃机的失火检测器具有包括初级线圈和次级线圈的点火线圈。 提供了一个断续电路，用于对流过点火线圈的初级电路的初级电流进行开 - 关动作。 分配器具有设置在点火线圈的二次回路中的串联间隙，并且火花塞适于从点火线圈通过分配器的串联间隙通电。 电压充电电路用于在火花塞的火花作用结束之后立即对火花塞固有的杂散电容进行充电。 火花塞电压检测器电路将电压波形区分大于预定的参考电压电平，以将电压波形变形为输出信号。 基于输出信号的宽度，区分电路确定火花动作是否引燃内燃机的气缸中的空气 - 燃料混合物。

公开(公告)号：US5347855A

公开(公告)日：1994-09-20

申请号：US29235

申请日：1993-03-10

申请人： Shigeru Miyata ,  Yoshihiro Matsubara ,  Junichi Kagawa

发明人： Shigeru Miyata ,  Yoshihiro Matsubara ,  Junichi Kagawa

IPC分类号： F02P17/12 ,  H01T13/46 ,  G01M15/00

CPC分类号： H01T13/467 ,  F02P17/12 ,  F02P2017/121 ,  F02P2017/123 ,  F02P2017/125

摘要： In a misfire detector device for use in internal combustion engine, an electrical interrupter circuit on-off actuates a primary current flowing through a primary circuit of an ignition coil to induce a sparkplug voltage which is applied to a multi-electrode type spark plug. A check diode or a series gap is provided in a secondary circuit of the ignition coil so as to prevent a current flowing back to the ignition coil. A sparkplug voltage detector circuit detects an attenuation time length of a sparkplug voltage waveform presented subsequent to a predetermined time period after an end of a spark action of the spark plug. On the basis of the attenuation time length, a distinction circuit determines whether a misfire occurs in a cylinder of an internal combustion engine.

摘要翻译： 在用于内燃机的失火检测装置中，电断路器电路开关致动流过点火线圈的初级电路的初级电流，以引起施加到多电极型火花塞的火花塞电压。 在点火线圈的次级电路中设置校验二极管或串联间隙，以防止电流回流到点火线圈。 火花塞电压检测器电路检测在火花塞的火花动作结束之后的预定时间段之后呈现的火花塞电压波形的衰减时间长度。 基于衰减时间长度，区分电路确定在内燃机的气缸中是否发生失火。

公开(公告)号：US5294888A

公开(公告)日：1994-03-15

申请号：US865909

申请日：1992-04-09

申请人： Shigeru Miyata ,  Takashi Suzuki ,  Yoshihiro Matsubara ,  Yuuichi Shimasaki ,  Takashi Hisaki

发明人： Shigeru Miyata ,  Takashi Suzuki ,  Yoshihiro Matsubara ,  Yuuichi Shimasaki ,  Takashi Hisaki

IPC分类号： F02B77/08 ,  F02D45/00 ,  F02P17/00 ,  F02P17/12 ,  G01M15/04

CPC分类号： F02P17/12 ,  F02P2017/006 ,  F02P2017/123 ,  F02P2017/125

摘要： In equipment for recognizing misfire in an internal combustion engine, a first voltage waveform is obtained at an intermediate point (A) between a high impedance element (41) and a low impedance element (42). The first voltage waveform has a capacitive discharge component and an inductive discharge component during the spark and a voltage component after completion of the spark. The first voltage waveform is inversely amplified by a comparator (51) and divided by a shunt circuit (52) to obtain a second voltage waveform. In an integration circuit (53), a condenser (C1) is electrically charged by an output voltage from the comparator (51) to obtain a third voltage waveform. The second voltage waveform and the third voltage are compared by a comparator (54) to generate an output pulse. On the basis of the behavior of relatively short and relatively wide output pulse (d2, D2) and additional short output pulses (d3, d4) from the comparator (54), it is determined whether or not a misfire has occurred in the internal combustion engine.

摘要翻译： 在用于识别内燃机失火的设备中，在高阻抗元件（41）和低阻抗元件（42）之间的中间点（A）获得第一电压波形。 第一电压波形在火花期间具有电容放电分量和感应放电分量，并且在火花完成之后具有电压分量。 第一电压波形由比较器51反相放大，并由分流电路（52）分压以获得第二电压波形。 在积分电路（53）中，通过来自比较器（51）的输出电压对电容器（C1）进行充电，得到第三电压波形。 通过比较器（54）比较第二电压波形和第三电压以产生输出脉冲。 基于来自比较器（54）的相对短且相对宽的输出脉冲（d2，D2）和附加短输出脉冲（d3，d4）的行为，确定在内燃中是否发生失火 发动机。

公开(公告)号：US5048952A

公开(公告)日：1991-09-17

申请号：US400450

申请日：1989-08-30

申请人： Shigeru Miyata ,  Yoshitaka Yamada

发明人： Shigeru Miyata ,  Yoshitaka Yamada

IPC分类号： G01N21/43 ,  G01N21/41

CPC分类号： G01N21/431

摘要： A liquid mixing ratio detecting sensor has cylindrical holder which is immersed in sulfuric acid solution. The holder is filled with silicone oil. A glass plate is placed within the holder. A light emitting diode emits light beams which enter the glass plate through its vertical side, and totally reflect from a boundary between the glass plate and the sulfuric acid solution. The light beams coming out from the glass plate is reflected by a reflection plate to enter into the glass plate through its vertical side, and totally reflected from a reference boundary between the glass plate and the silicone oil when a refractive index of the sulfuric acid solution is greater than that of silicone oil. On the other hand, the light beams entered into the glass plate refracts at the reference boundary to fall on a photo diode when the refractive index of the sulfuric acid solution decreases to be smaller than that of silicone oil.

摘要翻译： 液体混合比检测传感器具有浸渍在硫酸溶液中的圆柱形保持器。 支架上装有硅油。 玻璃板放置在支架内。 发光二极管通过其垂直侧发射进入玻璃板的光束，并从玻璃板和硫酸溶液之间的边界全反射。 从玻璃板出来的光束被反射板反射，通过其垂直侧进入玻璃板，当玻璃板和硅油之间的参考边界处于硫酸溶液的折射率时全反射 大于硅油。 另一方面，当硫酸溶液的折射率降低到比硅油的折射率小时，进入玻璃板的光束在参考边界处折射成落在光电二极管上。

公开(公告)号：US5581188A

公开(公告)日：1996-12-03

申请号：US378262

申请日：1995-01-26

申请人： Shigeru Miyata ,  Noriaki Kondo

发明人： Shigeru Miyata ,  Noriaki Kondo

IPC分类号： F02P3/04 ,  F02B1/04 ,  F02P17/12 ,  F02P17/00

CPC分类号： F02P17/12 ,  F02B1/04 ,  F02P2017/123

摘要： A misfire detecting device for an ignition system, comprises high voltage applying device for applying a pulsed high voltage to each spark plug of an engine after completion of firing of the spark plug, voltage restricting device for restricting a peak of the pulsed high voltage to a highest possible value that does not cause firing of the spark plug, voltage detecting component for detecting a plug voltage across a center electrode-to-outer electrode of the spark plug after reducing the same, and misfire detecting device for detecting a misfire at each cylinder on the basis of a decay characteristic of a detection voltage which is caused by application of the pulsed high voltage. In another embodiment, the misfire detecting device has a high voltage device which monitors a detection voltage which is caused by application of the pulsed high voltage to each spark plug and controls the pulsed high voltage so that the detection voltage is maintained at a highest possible value that does not cause firing of the spark plug due to application of the pulsed high voltage to the spark plug.

摘要翻译： 一种用于点火系统的失火检测装置，包括高压施加装置，用于在火花塞完成点火之后向发动机的每个火花塞施加脉冲高压，用于将脉冲高压峰值限制到 不会引起火花塞触发的最高可能值，用于检测火花塞的中心电极对外部电极之后的插头电压的电压检测部件，以及用于检测各气缸失火的失火检测装置 基于由施加脉冲高电压引起的检测电压的衰减特性。 在另一个实施例中，失火检测装置具有高电压装置，其监测由对每个火花塞施加脉冲高电压而引起的检测电压，并控制脉冲高电压，使得检测电压保持在最高可能值 由于向火花塞施加脉冲高压，不会引起火花塞的点火。