公开(公告)号：US07955494B2

公开(公告)日：2011-06-07

申请号：US12212121

申请日：2008-09-17

申请人： Tomoo Kawase ,  Eiichi Kurokawa ,  Toshiyuki Suzuki ,  Takahito Masuko

发明人： Tomoo Kawase ,  Eiichi Kurokawa ,  Toshiyuki Suzuki ,  Takahito Masuko

IPC分类号： G01N27/417

CPC分类号： G01N27/4065

摘要： The gas sensor control apparatus is for controlling a gas sensor including a sensor element having a solid electrolyte layer, and first and second electrodes located on opposite sides of the solid electrolyte layer, the first electrode serving as a gas detecting electrode, the second electrode serving as a reference electrode, the sensor element generating, as a sensor output, a current flowing between the first and second electrodes having a value depending on concentration of a specific gas component contained in a gas under measurement. The gas sensor control apparatus includes a determination function of determining whether or not it is time for the gas sensor to start operation, and a control function of forcibly supplying oxygen from a side of the second electrode to a side of the first electrode on a temporary basis when a determination result of the first function becomes affirmative.

摘要翻译： 气体传感器控制装置用于控制包括具有固体电解质层的传感器元件的气体传感器和位于固体电解质层的相对侧的第一和第二电极，用作气体检测电极的第一电极， 作为参考电极，传感器元件作为传感器输出产生在第一和第二电极之间流动的电流，其具有取决于测量气体中所含的特定气体成分的浓度的值。 气体传感器控制装置具有确定气体传感器是否开始运转的判定功能，以及从第二电极侧向第一电极一侧强制供给氧的控制功能， 当第一功能的确定结果变得肯定时的基础。

公开(公告)号：US07671600B2

公开(公告)日：2010-03-02

申请号：US11907556

申请日：2007-10-15

申请人： Toshiyuki Suzuki ,  Tomoo Kawase ,  Eiichi Kurokawa ,  Yohei Kawaki

发明人： Toshiyuki Suzuki ,  Tomoo Kawase ,  Eiichi Kurokawa ,  Yohei Kawaki

IPC分类号： G01N27/62

CPC分类号： G01N27/407

摘要： A gas concentration detection apparatus includes a series-connected combination of a sensor element and a resistor, with an AC voltage being applied to one of the outer terminals of that combination and with the other outer terminal being held at a fixed potential. A DC voltage signal at a level determined by an oxygen concentration that is detected by the sensor element, and an AC voltage signal at an amplitude determined by sensor element impedance and hence by the sensor element activation status, are extracted from the series-connected combination by respectively separate circuits which apply separately determined amplification factors.

摘要翻译： 气体浓度检测装置包括传感器元件和电阻器的串联组合，其中AC电压被施加到该组合的外部端子之一，而另一个外部端子被保持在固定电位。 由传感器元件检测到的由氧浓度确定的水平的直流电压信号和由传感器元件阻抗确定的振幅以及因此由传感器元件启动状态确定的交流电压信号从串联连接的组合 分别分别应用单独确定的放大因子的电路。

公开(公告)号：US07614391B2

公开(公告)日：2009-11-10

申请号：US12104008

申请日：2008-04-16

申请人： Tomoo Kawase ,  Eiichi Kurokawa ,  Katsuhiko Nakabayashi ,  Takahito Masuko ,  Koji Sugiura

发明人： Tomoo Kawase ,  Eiichi Kurokawa ,  Katsuhiko Nakabayashi ,  Takahito Masuko ,  Koji Sugiura

IPC分类号： F02D41/00

CPC分类号： F02D41/222 ,  F02D41/123 ,  F02D41/145 ,  F02D41/1454 ,  F02D41/2441 ,  F02D41/2448 ,  F02D41/2454 ,  F02D41/2474 ,  F02D2041/1422

摘要： A correction apparatus for correcting an output of an oxygen sensor installed in an exhaust pipe of an internal combustion engine to measure the concentration of oxygen contained in exhaust gas. The apparatus works to execute a fuel cut operation to bring the pressure in the exhaust pipe to the atmospheric pressure and enters an under-atmosphere correction mode to sample an output of the oxygen sensor and determine a correction factor compensating for a deviation of the sampled output from a reference value representing an actual concentration of oxygen. The apparatus also works to calculate the pressure in the exhaust pipe after start of the fuel cut and determine whether the under-atmosphere correction mode is to be entered or not based on the pressure of exhaust gas, thereby ensuring the accuracy in correcting the output of the oxygen sensor regardless of a variation in the pressure of exhaust gas.

摘要翻译： 一种用于校正安装在内燃机的排气管中的氧传感器的输出的校正装置，以测量废气中所含的氧浓度。 该装置用于执行燃料切断操作以使排气管中的压力达到大气压并进入大气下校正模式以对氧传感器的输出进行采样，并确定补偿采样输出的偏差的校正因子 从表示氧气的实际浓度的参考值。 该装置还用于计算燃料切断开始后的排气管中的压力，并且基于排气的压力来确定是否要进入低于大气压的校正模式，从而确保校正输出的精度 氧传感器，而不管排气压力的变化。

公开(公告)号：US07578914B2

公开(公告)日：2009-08-25

申请号：US11167391

申请日：2005-06-28

申请人： Tomoo Kawase ,  Eiichi Kurokawa

发明人： Tomoo Kawase ,  Eiichi Kurokawa

IPC分类号： G01N27/407

CPC分类号： G01N27/4175

摘要： A gas concentration measuring apparatus for use in air-fuel ratio control of motor vehicle engines is provided which is designed to determine the concentrations of oxygen at different resolutions within a wide and a narrow range using a first and a second sensor signal which are amplified by first and second operational amplifiers at different amplification factors. The apparatus samples values of the first sensor signal at different concentrations of oxygen to find an output characteristic error of the first operational amplifier and determines an actual concentration of oxygen to calculate an output characteristic error of the second operational amplifier using the one of the first operational amplifier and the actual concentration of oxygen. This permits values of the first and second sensor signals to be corrected so as to compensate for the output characteristics of the first and second operational amplifiers.

摘要翻译： 提供一种用于机动车辆发动机的空燃比控制的气体浓度测量装置，其被设计成使用第一和第二传感器信号来确定在宽范围和窄范围内的不同分辨率下的氧气浓度，所述第一和第二传感器信号由 第一和第二运算放大器在不同的放大系数。 该装置以不同氧浓度对第一传感器信号的值进行采样，以找出第一运算放大器的输出特性误差，并且确定实际的氧浓度，以使用第一运算放大器中的一个运算放大器计算第二运算放大器的输出特性误差 放大器和氧气的实际浓度。 这允许校正第一和第二传感器信号的值，以补偿第一和第二运算放大器的输出特性。

公开(公告)号：US07445698B2

公开(公告)日：2008-11-04

申请号：US10813442

申请日：2004-03-31

申请人： Satoshi Hada ,  Tomoo Kawase ,  Eiichi Kurokawa

发明人： Satoshi Hada ,  Tomoo Kawase ,  Eiichi Kurokawa

IPC分类号： G01N27/409 ,  G01N27/41

CPC分类号： G01N27/4071

摘要： In a gas concentration detecting apparatus, a voltage is applied to electrodes of a sensor element. A change is caused in either the applied voltage or an element current. An amount of a change in each of a current value and a voltage value caused is measured in response to the caused change. An amount of resistance of the sensor element is calculated based on a ratio between the change amounts in the current value and the voltage value. A detection unit detects abnormality relating to controlling the sensor by utilizing at least one of the change amounts in the current value and the voltage value.

摘要翻译： 在气体浓度检测装置中，向传感器元件的电极施加电压。 在施加的电压或元件电流中引起变化。 响应于引起的变化来测量引起的电流值和电压值中的每一个的变化量。 基于当前值的变化量与电压值之间的比率来计算传感器元件的电阻量。 检测单元通过利用电流值和电压值中的至少一个变化量来检测与传感器的控制有关的异常。

公开(公告)号：US20070007134A1

公开(公告)日：2007-01-11

申请号：US11483608

申请日：2006-07-11

申请人： Tomoo Kawase ,  Eiichi Kurokawa ,  Toru Katafuchi

发明人： Tomoo Kawase ,  Eiichi Kurokawa ,  Toru Katafuchi

IPC分类号： G01N27/26

CPC分类号： F02D41/1494 ,  F02D41/1456 ,  G01N27/4067 ,  G01N27/4175

摘要： A gas concentration measuring system for use in air-fuel ratio control of motor vehicle engines is provided which is designed to determine the concentrations of oxygen as a function of an air-fuel ratio of a mixture supplied to the engine through a sensor element. The sensor element is activated by heat produced by an electric heater. The system works to sample the accumulated amount of energy inputted to the sensor element by the heat produced by the heater to determine whether the sensor element has been activated enough to produce an output representing an actual value of the air-fuel ratio correctly or not. Use of the accumulated amount of energy inputted to the sensor element will result in a decreased time required for such a determination as compared with the impedance of the sensor element.

摘要翻译： 提供一种用于机动车辆发动机的空燃比控制的气体浓度测量系统，其被设计为根据通过传感器元件提供给发动机的混合物的空燃比来确定氧浓度。 传感器元件由电加热器产生的热量激活。 该系统用于通过由加热器产生的热量来采样输入到传感器元件的能量的累积量，以确定传感器元件是否已经被足够的激活，以正确地产生表示空燃比的实际值的输出。 使用输入到传感器元件的累积能量将导致与传感器元件的阻抗相比所需的这种确定所需的时间减少。

公开(公告)号：US06336354B1

公开(公告)日：2002-01-08

申请号：US09497179

申请日：2000-02-03

申请人： Toshiyuki Suzuki ,  Eiichi Kurokawa ,  Tomoo Kawase ,  Satoshi Hada

发明人： Toshiyuki Suzuki ,  Eiichi Kurokawa ,  Tomoo Kawase ,  Satoshi Hada

IPC分类号： G01N2712

CPC分类号： G01N27/4067

摘要： A gas concentration measuring apparatus is provided which measures the concentration of a given gas using a gas sensor. The gas sensor includes a sensor element producing a gas concentration signal indicative of the concentration of the gas, a heater heating the sensor element, and an insulator disposed between the sensor element and the heater. The apparatus includes a heater control circuit which may provisionally supply electrical power to the heater by applying a Pulse-Width-Modulated signal. The heater control circuit performs a switching operation to supply power to the heater cyclically. The apparatus corrects an error contained in the gas concentration signal arising from a leakage current flowing into the sensor element through the insulator during the switching operation of the heater control circuit.

摘要翻译： 提供一种气体浓度测量装置，其使用气体传感器测量给定气体的浓度。 气体传感器包括产生指示气体浓度的气体浓度信号的传感器元件，加热传感器元件的加热器和设置在传感器元件和加热器之间的绝缘体。 该装置包括加热器控制电路，该加热器控制电路可通过施加脉冲宽度调制信号临时向加热器供电。 加热器控制电路执行切换操作以循环地向加热器供电。 该装置在加热器控制电路的切换操作期间，通过绝缘体校正由流入传感器元件的漏电流引起的气体浓度信号中包含的误差。

公开(公告)号：US6164125A

公开(公告)日：2000-12-26

申请号：US55784

申请日：1998-04-07

申请人： Tomoo Kawase ,  Eiichi Kurokawa ,  Yukihiro Yamashita ,  Satoshi Haseda ,  Toshiyuki Suzuki

发明人： Tomoo Kawase ,  Eiichi Kurokawa ,  Yukihiro Yamashita ,  Satoshi Haseda ,  Toshiyuki Suzuki

IPC分类号： F02D41/14 ,  G01N27/417 ,  G01N33/00 ,  G01M19/00

CPC分类号： G01N27/4175 ,  F02D41/1456 ,  F02D41/1494 ,  F02D41/1495

摘要： A gas concentration sensor voltage and current (in both heater on and heater off states) are detected and compared with predetermined thresholds, respectively, by a microcomputer. Based on a combination of the comparison results, the presence or absence of trouble in the system is detected and trouble location in the system is specified. In addition or alternatively, the sensor voltage is compared with thresholds to determine whether it is outside of a normal zone. The voltage may be actually detected or calculated. If the voltage is outside the normal zone, sensor voltage is reduced to zero or restricted to a predetermined limit.

摘要翻译： 通过微型计算机分别检测气体浓度传感器电压和电流（两者在加热器开启和加热器关闭状态）并与预定阈值进行比较。 基于比较结果的组合，检测系统中存在或不存在故障，并指定系统中的故障定位。 另外或替代地，将传感器电压与阈值进行比较以确定其是否在正常区域之外。 可以实际检测或计算电压。 如果电压在正常区域之外，则传感器电压降低到零或限制在预定的极限。

公开(公告)号：US5719460A

公开(公告)日：1998-02-17

申请号：US563378

申请日：1995-11-28

申请人： Takehiro Watarai ,  Satoshi Hayashi ,  Kenzi Kato ,  Kazuhiko Miura ,  Tomoo Kawase ,  Yoshinobu Takeuchi

发明人： Takehiro Watarai ,  Satoshi Hayashi ,  Kenzi Kato ,  Kazuhiko Miura ,  Tomoo Kawase ,  Yoshinobu Takeuchi

IPC分类号： G01C19/56 ,  H01L41/08

CPC分类号： G01C19/5607 ,  G01C19/5656

摘要： An angular velocity detector includes vibrator made of piezoelectric material and having a pair of arms. A pair of driving electrodes are attached to the arms in order to generate vibrations in the arms. A pair of detecting electrodes, which are attached to the arms, detect the vibrations of the arms. Therefore, the pair of driving electrodes can cause the arms to vibrate uniformly and stably, so that a S/N ratio of the angular velocity sensor can be improved.

摘要翻译： 角速度检测器包括由压电材料制成并具有一对臂的振动器。 一对驱动电极附接到臂上以在臂中产生振动。 安装在臂上的一对检测电极检测臂的振动。 因此，一对驱动电极能够使臂均匀稳定地振动，能够提高角速度传感器的S / N比。

公开(公告)号：US20110305601A1

公开(公告)日：2011-12-15

申请号：US13158525

申请日：2011-06-13

申请人： Tomoo KAWASE ,  Koji SUGIURA

发明人： Tomoo KAWASE ,  Koji SUGIURA

IPC分类号： B01D53/94

CPC分类号： F01N3/2026 ,  B01D53/9454 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/92 ,  Y02A50/2324 ,  Y02T10/22 ,  Y02T10/26

摘要： A honeycomb body of a honeycomb structure is made of ceramic, and a plurality of electrodes are provided apart from one another on a surface of the honeycomb body. In the honeycomb body, energization is performed for each of a plurality of current paths Xa to Xc formed by the plurality of electrodes, thereby heating the honeycomb body. A controlling device detects heater current Ia, Ib, and IC that flow when a predetermined voltage is applied for each of the plurality of current paths Xa, Xb, and Xc, and controls an energization timing of each current path Xa to Xc based on the detection results.

摘要翻译： 蜂窝结构体的蜂窝体由陶瓷制成，在蜂窝体的表面上分离设置多个电极。 在蜂窝体中，对由多个电极形成的多个电流路径Xa〜Xc进行通电，从而对蜂窝体进行加热。 控制装置检测对多个电流路径Xa，Xb，Xc中的每一个施加预定电压时流过的加热器电流Ia，Ib和IC，并基于该电流路径Xa至Xc控制通电定时 检测结果。