公开(公告)号：US06055844A

公开(公告)日：2000-05-02

申请号：US878775

申请日：1997-06-19

申请人： Noriaki Kondo ,  Hiroshi Inagaki ,  Shigeru Miyata

发明人： Noriaki Kondo ,  Hiroshi Inagaki ,  Shigeru Miyata

IPC分类号： F02M7/12 ,  F01N3/22 ,  F02D35/00 ,  F02D41/14 ,  F02D45/00 ,  G01M15/00

CPC分类号： F02D41/1474 ,  F02D35/003 ,  F01N3/22

摘要： An air/fuel ratio detection device and an air/fuel ratio control device, in which combustion of an engine is controlled with a simple design and toxic substances in exhaust gas discharged from the engine are reduced. Time A during which a lean signal is at a high level is measured. If the time A is shorter than the predetermined value, it is determined that the air/fuel ratio is richer than a target value, and time B during which an electromagnetic valve 21 is open is lengthened, increasing the quantity of supply air and making leaner the fuel mixed air, such that the target air/fuel ratio is approached. If the time A is longer than the predetermined value, it is determined that the air/fuel ratio is leaner and the time B is shortened.

摘要翻译： 空气/燃料比检测装置和空燃比控制装置，其中以简单的设计控制发动机的燃烧并且减少从发动机排出的废气中的有毒物质。 测量稀疏信号处于高电平的时间A. 如果时间A短于预定值，则确定空燃比比目标值更加丰富，并且电磁阀21打开的时间B被延长，从而增加供气量并使其变稀 燃料混合空气，使得目标空气/燃料比接近。 如果时间A长于预定值，则确定空燃比较稀，时间B缩短。

公开(公告)号：US06228252B1

公开(公告)日：2001-05-08

申请号：US09022208

申请日：1998-02-11

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 ,  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：第一测量室20，其经由扩散速率限定层4d与测量的气体连通，第二测量室26经由扩散限制层6d，22d与第一测量室20连通。第一泵电流 控制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：US5895564A

公开(公告)日：1999-04-20

申请号：US927527

申请日：1997-09-11

申请人： Shigeru Miyata ,  Noriaki Kondo ,  Hiroshi Inagaki

发明人： Shigeru Miyata ,  Noriaki Kondo ,  Hiroshi Inagaki

IPC分类号： G01N27/41 ,  G01N27/406 ,  G01N27/419 ,  G01N27/407

CPC分类号： G01N27/4065 ,  G01N27/419

摘要： An air/fuel ratio sensor is controlled such that the oxygen concentration of the measurement gas can be detected from a pump current substantially instantaneously after a heater turns on. In the air/fuel ratio sensor an oxygen pumping cell and an oxygen concentration measuring cell are each formed of a solid electrolytic layer interposed between a pair of porous electrodes. One of the electrodes of each cell defines a measurement gas chamber in which the diffusion of the measurement gas is controlled. After a micro current is supplied to the other electrode of the oxygen concentration measuring cell for a predetermined period of time, thereby forming an internal reference oxygen source, the supply of the micro current is stopped and at the same time a pump current in the oxygen pumping cell starts to be controlled until the interelectrode voltage of the oxygen concentration measuring cell reaches a target voltage. After the air/fuel ratio sensor is activated, the supply of the micro current is restarted.

摘要翻译： 控制空气/燃料比传感器，使得可以在加热器接通之后基本上瞬时地从泵电流检测测量气体的氧浓度。 在空气/燃料比传感器中，氧气泵浦单元和氧浓度测量单元各自由置于一对多孔电极之间的固体电解质层形成。 每个电池的一个电极限定测量气体室，其中测量气体的扩散被控制。 在氧浓度测量单元的另一个电极经过预定的时间段供给微电流之后，形成内部基准氧源，停止供给微量电流，同时在氧气中泵送电流 泵电池开始被控制，直到氧浓度测量池的电极间电压达到目标电压。 空燃比传感器启动后，再次启动微电流的供给。

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：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：US5503132A

公开(公告)日：1996-04-02

申请号：US364998

申请日：1994-12-28

申请人： Shigeru Miyata ,  Noriaki Kondo ,  Hiroshi Inagaki ,  Masaru Kondou

发明人： Shigeru Miyata ,  Noriaki Kondo ,  Hiroshi Inagaki ,  Masaru Kondou

IPC分类号： G01M15/04 ,  F02B1/04 ,  F02D45/00 ,  F02P15/08 ,  F02P17/12 ,  F02P17/00

CPC分类号： F02P15/08 ,  F02P17/12 ,  F02B1/04 ,  F02P2017/123 ,  F02P2017/125

摘要： A misfire detecting device for a double-ended distributorless ignition system is provided. The device includes a pulse generating circuit for generating a positive polarity pulse which is not so high as to cause spark discharge during the time after completion of spark discharge and before beginning of application of an ignition high voltage for next spark discharge. A reverse current preventing diode is connected at an anode to an output end of the pulse generating circuit and at a cathode to a positive polarity side of a secondary winding of an ignition coil. A plug voltage dividing circuit for dividing a plug voltage is connected between a center electrode and an outer or ground electrode of each of spark plugs to obtain a divided voltage. A detecting circuit detects a misfire of the spark plugs on the basis of an attenuation characteristic of the divided voltage after application of the positive polarity pulse.

摘要翻译： 提供了一种用于双端无分配器点火系统的失火检测装置。 该装置包括用于产生正极性脉冲的脉冲发生电路，该正极性脉冲不高于在火花放电完成后的时间期间以及开始施加用于下一次火花放电的点火高电压之前的火花放电。 反向电流防止二极管在阳极处连接到脉冲发生电路的输出端，并且在阴极连接到点火线圈的次级绕组的正极侧。 用于分割插头电压的插头分压电路连接在每个火花塞的中心电极和外部或接地电极之间以获得分压。 检测电路根据施加正极性脉冲之后的分压的衰减特性来检测火花塞的失火。

公开(公告)号：US07462266B2

公开(公告)日：2008-12-09

申请号：US10329489

申请日：2002-12-27

申请人： Shigeru Miyata ,  Noriaki Kondo ,  Hiroshi Inagaki

发明人： Shigeru Miyata ,  Noriaki Kondo ,  Hiroshi Inagaki

IPC分类号： G01N27/407

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：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：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：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。