公开(公告)号：US06224727B1

公开(公告)日：2001-05-01

申请号：US09050079

申请日：1998-03-30

申请人： Shigeru Miyata ,  Masashi Ando ,  Hiroshi Inagaki ,  Noboru Ishida ,  Takafumi Oshima

发明人： Shigeru Miyata ,  Masashi Ando ,  Hiroshi Inagaki ,  Noboru Ishida ,  Takafumi Oshima

IPC分类号： G01N2726

CPC分类号： G01N27/417 ,  G01N27/4074

摘要： An NOx sensor capable of accurately determining the concentration of NOx contained in a gas to be analyzed (measurement gas) using a simple circuit. The NOx sensor includes a first measurement space and a second measurement space. The first measurement space communicates with the measurement gas via a first diffusion controlling layer, and the second measurement space communicates with the first measurement space via a second diffusion controlling layer. A first pumping current IP1 is controlled such that an output from a Vs cell is used as a reference voltage VC0 to control the amount of oxygen flowing into the second measurement space at a constant level. A constant voltage is applied to the second pumping cell so as to decompose the NOx component of the measurement gas contained in the second measurement space, and to pump out the resulting oxygen from the second measurement space. Accordingly, the concentration of NOx contained in the measurement gas can be obtained from second pumping current IP2. The electrode of the Vs cell located on the side of the first measurement space is formed around the periphery of or on a portion of the diffusion controlling layer of the Vs cell. As a result, the amount of oxygen flowing from the first measurement space into the second measurement space can be accurately determined by means of the Vs cell. Also, the NOx concentration can be accurately determined without the need for compensation.

摘要翻译： 一种能够使用简单电路精确地测定待分析气体（测定气体）中所含的NOx的浓度的NOx传感器。 NOx传感器包括第一测量空间和第二测量空间。 第一测量空间经由第一扩散控制层与测量气体连通，第二测量空间经由第二扩散控制层与第一测量空间连通。 控制第一泵浦电流IP1，使得来自Vs电池的输出用作参考电压VC0，以控制以恒定水平流入第二测量空间的氧气量。 将恒定电压施加到第二泵浦单元，以分解包含在第二测量空间中的测量气体的NOx分量，并从第二测量空间泵出所得氧。 因此，可以从第二泵浦电流IP2获得包含在测量气体中的NOx的浓度。 位于第一测量空间一侧的Vs单元的电极形成在Vs单元的扩散控制层的一部分周围。 结果，可以通过Vs单元精确地确定从第一测量空间流入第二测量空间的氧气量。 此外，可以精确地确定NOx浓度，而不需要补偿。

公开(公告)号：US06214207B1

公开(公告)日：2001-04-10

申请号：US08965512

申请日：1997-11-06

申请人： Shigeru Miyata ,  Noriaki Kondo ,  Hiroshi Inagaki

发明人： Shigeru Miyata ,  Noriaki Kondo ,  Hiroshi Inagaki

IPC分类号： G01N2741

CPC分类号： G01N27/417 ,  G01N27/4074

摘要： Using a sole Nox sensor Nox concentration and oxygen concentration are measured accurately. A measurement device for measuring NOx concentration and oxygen concentration comprises an NOx sensor 2 having a first measurement chamber 20 communicating via a diffusion rate regulating layer 4d with the gas under measurement and a second measurement chamber 26 communicating with the first measurement chamber 20 via diffusion rate regulating layers 6d, 22d. A first pump cell 4 and an oxygen concentration measurement Vs cell 6 are formed on the first measurement chamber 20, while a second pump cell 8 is formed on the second measurement chamber 26. Inside of the first measurement chamber 20 is controlled to a constant low oxygen concentration by controlling the first pump current IP1 so that output of Vs cell 6 will equal a reference voltage VC0. By applying a constant voltage across the second pump cell 8 NOx in the second measurement chamber 26 is decomposed to pump out oxygen. Thus NOx concentration and oxygen concentration are measured from the second pump current IP2 and from the first pump current IP1, respectively. During measurement, sensor temperature is detected from the internal resistance of the Vs cell for controlling heater current supplied to heaters 12, 14 to maintain a constant sensor temperature.

摘要翻译： 使用唯一的Nox传感器可以精确测量Nox浓度和氧气浓度。 用于测量NOx浓度和氧浓度的测量装置包括：NOx传感器2，其具有经由扩散速率调节层4d与测量气体连通的第一测量室20和经由扩散速率与第一测量室20连通的第二测量室26 调节层6d，22d。 在第一测量室20上形成第一泵浦单元4和氧浓度测量Vs单元6，而在第二测量室26上形成第二泵单元8.在第一测量室20的内部被控制为恒定的低 通过控制第一泵电流IP1使得Vs电池6的输出等于参考电压VC0的氧浓度。 通过在第二泵电池8上施加恒定电压，第二测量室26中的NOx被分解以抽出氧气。 因此，从第二泵电流IP2和第一泵电流IP1分别测量NOx浓度和氧浓度。 在测量期间，从Vs单元的内部电阻检测传感器温度，以控制提供给加热器12,14的加热器电流，以保持恒定的传感器温度。

公开(公告)号：US5754051A

公开(公告)日：1998-05-19

申请号：US755259

申请日：1996-11-22

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 means for applying a pulsed high voltage to each spark plug of an engine after completion of firing of the spark plug, voltage restricting means 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 means for detecting a plug voltage across a center electrode-to-outer electrode of the spark plug after reducing the same, and misfire detecting means 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 comprises high voltage applying means 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：高电压施加装置，用于在完成火花塞点火之后向发动机的每个火花塞施加脉冲高电压;电压限制装置，用于将脉冲高电压的峰值限制到 不会引起火花塞点火的最高可能值;电压检测装置，用于在减小火花塞的中心电极对外电极之后检测插塞电压;以及失火检测装置，用于检测每个气缸的失火 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，失火检测装置包括高电压施加装置，其监测通过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。

公开(公告)号：US5592926A

公开(公告)日：1997-01-14

申请号：US356737

申请日：1994-12-15

申请人： Shigeru Miyata ,  Noriaki Kondo ,  Hiroshi Inagaki

发明人： Shigeru Miyata ,  Noriaki Kondo ,  Hiroshi Inagaki

IPC分类号： G01M15/04 ,  F02B1/04 ,  F02D45/00 ,  F02P17/00 ,  F02P17/12

CPC分类号： F02P17/12 ,  F02B1/04 ,  F02P2017/006 ,  F02P2017/123 ,  F02P2017/125

摘要： A method of detecting a misfire of an ignition system for an internal combustion engine is provided. By the method, after completion of spark discharge of a spark plug, a high tension pulse which is not so high as to cause spark discharge is applied to each spark plug by way of a reverse current preventing diode and a secondary winding of an ignition coil or by way of a reverse current preventing diode and a leakage preventing diode for preventing ingress of an ignition high voltage. Misfire at each cylinder is detected on the basis of a voltage attenuation characteristic at a passing side terminal of the reverse current preventing diode. A device for carrying out the above method is also provided.

摘要翻译： 提供一种检测内燃机点火系统失火的方法。 通过该方法，在火花塞的火花放电完成之后，通过反向电流防止二极管和点火线圈的次级绕组向每个火花塞施加不高于引起火花放电的高压脉冲 或者通过用于防止点火高电压进入的反向电流防止二极管和防漏二极管。 基于反向电流防止二极管的通过侧端子处的电压衰减特性来检测每个气缸处的失火。 还提供了一种用于执行上述方法的装置。

公开(公告)号：US5450013A

公开(公告)日：1995-09-12

申请号：US180313

申请日：1994-01-12

申请人： Shigeru Miyata ,  Noriaki Kondo

发明人： Shigeru Miyata ,  Noriaki Kondo

IPC分类号： F02P17/00 ,  F02P17/12 ,  H01T13/60

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

摘要： A spark plug voltage waveform detector probe for use in an internal combustion engine and which is mounted on a secondary circuit of an ignition circuit to form static capacity therebetween so as to detect a spark plug voltage waveform. The detector probe includes an insulator body and an electrode plate which is embedded in the insulator body and electrically connected to a lead wire. A pair of readily replaceable insulator plates are located under the insulator body each of the insulator plates having at least one groove, the at least one groove of each of the insulator plates opposing each other and cooperating to form an opening in which a spark plug cable is placed which is extended from the secondary circuit. Electromagnetic shield plates are provided to liquid-tightly sandwich the insulator body and the insulator plates so as to form a laminated detector probe structure. The electromagnetic shield plates are electrically connected to the internal combustion engine for grounding.

摘要翻译： 一种用于内燃机的火花塞电压波形检测器探针，其安装在点火电路的二次回路上以在其间形成静电容量，以便检测火花塞电压波形。 检测器探头包括绝缘体和电极板，该电极板嵌入绝缘体并电连接到引线上。 一对容易更换的绝缘体板位于绝缘体下方，每个绝缘体板具有至少一个凹槽，每个绝缘体板的至少一个凹槽彼此相对并配合形成一个开口，其中火花塞电缆 被放置为从次级电路延伸。 提供电磁屏蔽板以液体密封夹住绝缘体和绝缘板，以形成层叠检测器探针结构。 电磁屏蔽板电连接到内燃机用于接地。

公开(公告)号：US5426370A

公开(公告)日：1995-06-20

申请号：US982822

申请日：1992-11-30

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 spark plug voltage probe device, an electrically shield casing (301) is provided in which electrical circuit boards (302) are accommodated, the shield casing (301) having an electrically conductive wall (313) connected to the ground. An insulator base (303) is securely attached to an outer bottom of the electrical shield casing (301) and has an electrode plate (332) embedded in the insulator base to be connected to the electrical circuit boards (302). A rubber plate (342) is securely attached to a lower surface of the insulator base (303). A plurality of grooves (333, 341) are provided between the insulator base (303) and the rubber plate (342) to locate the corresponding cables (305) in the grooves (333,341) so as to form a static capacity (C1) between the electrode plate (332) and the cables (305). This makes it possible to reduce a noise level by the ratio of the static capacity (C1) to a static capacity (C2) between the electrically conductive wall (313) and the electrode plate (332). An electrical shield sheet (343) is fixedly attached to the lower surface of the rubber plate (342).

摘要翻译： 在火花塞电压探针装置中，设置有电屏蔽壳体（301），其中容纳电路板（302），所述屏蔽壳体（301）具有连接到地面的导电壁（313）。 绝缘体基座（303）牢固地附接到电气屏蔽壳体（301）的外部底部，并且具有嵌入到绝缘体基座中以连接到电路板（302）的电极板（332）。 橡胶板（342）牢固地附接到绝缘体基座（303）的下表面。 多个凹槽（333,341）设置在绝缘体基座（303）和橡胶板（342）之间，以将相应的电缆（305）定位在凹槽（333,341）中，以便形成静电容量（C1） 电极板（332）和电缆（305）。 这使得可以通过静电容量（C1）与导电壁（313）和电极板（332）之间的静态容量（C2）的比来降低噪声水平。 电屏蔽片（343）固定在橡胶板（342）的下表面上。

公开(公告)号：US5355056A

公开(公告)日：1994-10-11

申请号：US59370

申请日：1993-05-12

申请人： Shigeru Miyata ,  Yasuo Ito ,  Hideji Yoshida

发明人： Shigeru Miyata ,  Yasuo Ito ,  Hideji Yoshida

IPC分类号： F02P17/00 ,  F02P17/12 ,  G01R31/00 ,  H05B37/02

CPC分类号： G01R31/006 ,  F02P17/12 ,  F02P2017/006 ,  F02P2017/123 ,  F02P2017/125

摘要： In a sparkplug voltage detecting probe device for use in internal combustion engine comprising, a sensor is provided to form a static capacity between the sensor and an ignition coil which is connected to a spark plug. A sparkplug voltage divider circuit has a capacitor connected between the sensor and the ground. A release circuit has a resistor connected in parallel with the capacitor so as to provide a time constant of a RC path. A short circuit is provided to instantaneously release an electrical charge from the capacitor either immediately before establishing a spark voltage for the spark plug or immediately after initiating the spark action of the spark plug. A sparkplug voltage waveform detecting circuit detects a sparkplug voltage waveform divided by the sparkplug voltage divider circuit.

摘要翻译： 在用于内燃机的火花塞电压检测探针装置中，包括传感器，以在传感器和连接到火花塞的点火线圈之间形成静态电容。 火花塞分压器电路具有连接在传感器和地之间的电容器。 释放电路具有与电容器并联连接的电阻器，以便提供RC路径的时间常数。 提供短路以在立即在建立用于火花塞的火花电压之前立即从电容器释放电荷，或者在启动火花塞的火花作用之后立即释放电荷。 火花塞电压波形检测电路检测由火花塞分压电路划分的火花塞电压波形。

公开(公告)号：US5253627A

公开(公告)日：1993-10-19

申请号：US988842

申请日：1992-12-10

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： F02D35/02 ,  F02D41/14 ,  F02P17/00 ,  F02P17/12 ,  F02D41/04

CPC分类号： F02P17/12 ,  F02D35/021 ,  F02P2017/006 ,  F02P2017/123 ,  F02P2017/125

摘要： In a burning condition detecting device in an internal combustion engine in which a high voltage is applied to a spark plug by way of a diode and a series gap of a distributor. A voltage charger circuit is provided to on-off actuates the primary coil to induce a charging voltage in the secondary circuit either during establishing the spark discharge or during a predetermined period of time immediately after an end of the spark discharge. The charging voltage is applied to the spark plug to electrically charge a stray capacity inherent in the spark plug so as to form a sparkplug voltage. A voltage divider circuit is provided to divide the sparkplug voltage in accordance with a high impedance element and a low impedance element. A voltage level detecting circuit is provided to detect a sparkplug voltage waveform divided by the voltage divider circuit. A distinction circuit detects a degree of variation of an attenuation time period of the spark plug voltage waveform so as to determine a variation of an air-fuel ratio of an air-fuel mixture gas injected into a cylinder of the internal combustion engine by a fuel injector.

摘要翻译： 在内燃机中的燃烧条件检测装置中，其中通过二极管将高电压施加到火花塞和分配器的串联间隙。 提供一个电压充电器电路来启动初级线圈，以在建立火花放电期间或在火花放电结束之后的预定时间段期间引起次级电路中的充电电压。 将充电电压施加到火花塞以对火花塞固有的杂散电容进行充电，以形成火花塞电压。 提供分压器电路以根据高阻抗元件和低阻抗元件来划分火花塞电压。 提供电压电平检测电路以检测由分压电路划分的火花塞电压波形。 区别电路检测火花塞电压波形的衰减时间周期的变化程度，以便确定通过燃料喷射到内燃机的汽缸内的空气燃料混合气体的空燃比的变化 注射器。

公开(公告)号：US5046842A

公开(公告)日：1991-09-10

申请号：US626024

申请日：1990-12-12

申请人： Shigeru Miyata ,  Yoshitaka Yamada

发明人： Shigeru Miyata ,  Yoshitaka Yamada

IPC分类号： G01N21/43

CPC分类号： G01N21/43 ,  G01N2201/0621

摘要： A mixing ratio detecting device for composite liquid has a transparent column placed so that a bottom of the column is in contact with a mixing liquid, and a light emitting diode disposed so that light beams therefrom are incident on one side of the column to pass therethrough so as to impinge on an interface between the bottom of the column and the mixing liquid. The light beams impinged on the interface less than a critical angle are refracted, while the light beams impinged on the interface more than the critical angle totally reflected to escape from other side of the column. A photo diode is provided to receive the light beams escaped from the other side of the column so as to generate an output. An effective photo-receiving area of the photo diode is in the form of an inversed trapezoid to compensate for characteristics of the output from the photo diode.

公开(公告)号：US4884066A

公开(公告)日：1989-11-28

申请号：US121455

申请日：1987-11-17

申请人： Shigeru Miyata ,  Toshiki Sawada

发明人： Shigeru Miyata ,  Toshiki Sawada

IPC分类号： F01N3/20 ,  F01N11/00 ,  F01N13/00 ,  F01N99/00 ,  F02D41/14

CPC分类号： F02D41/1441 ,  F01N11/007 ,  F01N13/011 ,  F01N2550/02 ,  F02D41/1456 ,  Y02T10/47

摘要： Deterioration detector system for catalyst in use for emission gas purifier, comprising; an emission passageway through which exhaust gas from internal combustion engine, passes by way of catalyst to facilitate the reducing and oxidizing reaction among the toxicant component of hydrocarbon, carbon monoxide and nitrogen oxide; a sensor placed at the emission passageway to position downstream of the catalyst against the exhaust gas flow so as to generate an output in direct proportion to air-fuel ratio in the exhaust gas; an annunciator arranged to activate in response to the output of more than the predetermined level generated from the air- fuel ratio sensor.

摘要翻译： 用于排放气体净化器的催化剂劣化检测器系统，包括： 来自内燃机的废气通过催化剂通过的排放通道，以促进烃，一氧化碳和氮氧化物的有毒成分之间的还原和氧化反应; 位于所述排放通道处的传感器，其位于所述催化剂的下游以抵靠所述排气流动，从而产生与排气中的空燃比成正比的输出; 响应于从空燃比传感器产生的超过预定水平的输出而激活的报警器。