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1. 发明授权

US06224727B1 NOx sensor 失效
标题翻译： NOx传感器
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。

2. 发明授权

US06695964B1 Method and apparatus for measuring NOx gas concentration 有权
标题翻译：测量NOx气体浓度的方法和装置
公开(公告)号：US06695964B1
公开(公告)日：2004-02-24
申请号：US09588504
申请日：2000-06-07
申请人： Masashi Ando , Noboru Ishida , Satoshi Sugaya , Takafumi Oshima , Norihiko Nadanami , Takaki Ootuka , Yoshikuni Sato , Tatsuo Okumura
发明人： Masashi Ando , Noboru Ishida , Satoshi Sugaya , Takafumi Oshima , Norihiko Nadanami , Takaki Ootuka , Yoshikuni Sato , Tatsuo Okumura
IPC分类号： G01N27407
CPC分类号： G01N27/4074
摘要： Method and sensor for measuring accurate measurement of NOx concentration in an exhaust gas containing O2,H2O, CO2 and NOx and a NOx gas concentration sensor. A first oxygen pump cell sufficiently pumps out oxygen in a measurement gas such as not to decompose NOx. A pair of electrodes is provided on an inner side and an outer side of a second measurement chamber into which the gas is introduced from a first measurement chamber via a diffusion resistance. A voltage is impressed across the paired electrodes for decomposing NOx in the second measurement chamber to dissociate oxygen which causes the current to flow in a second oxygen ion pump cell. The NOx gas concentration is measured for this current. The voltage impressed across the paired electrodes of the second oxygen ion pump cell is set so as not to dissociate H2O and CO2 present in the second measurement chamber.
摘要翻译：用于测量含有O 2，H 2 O，CO 2和NO x以及NOx气体浓度传感器的废气中的NOx浓度的精确测量的方法和传感器。第一氧气泵电池在测量气体中充分抽出氧气，例如不分解NOx。一对电极设置在第二测量室的内侧和外侧，气体通过扩散阻力从第一测量室引入到该第二测量室中。在一对电极上施加电压，用于分解第二测量室中的NOx，以解离氧，这导致电流在第二氧离子泵电池中流动。测量该电流的NOx气体浓度。设置在第二氧离子泵电池的成对电极上施加的电压，以使第二测量室中不存在H 2 O和CO 2。

3. 发明授权

US06743352B2 Method and apparatus for correcting a gas sensor response for moisture in exhaust gas 有权
标题翻译：用于校正废气中的湿气的气体传感器响应的方法和装置
公开(公告)号：US06743352B2
公开(公告)日：2004-06-01
申请号：US10066684
申请日：2002-02-06
申请人： Masashi Ando , Noboru Ishida , Satoshi Sugaya , Takafumi Oshima , Norihiko Nadanami , Takaki Otsuka , Yoshikuni Sato , Tatsuo Okumura , Yasuhisa Kuzuya
发明人： Masashi Ando , Noboru Ishida , Satoshi Sugaya , Takafumi Oshima , Norihiko Nadanami , Takaki Otsuka , Yoshikuni Sato , Tatsuo Okumura , Yasuhisa Kuzuya
IPC分类号： G01N27407
CPC分类号： F01N3/2066 , F01N3/0842 , F01N3/0871 , F01N11/00 , F01N2550/02 , F01N2550/03 , F01N2560/026 , F01N2570/14 , F01N2610/03 , F02D41/146 , F02D41/2474 , F02D41/28 , G01N27/4175 , G01N27/419 , G01N33/0037 , Y02A50/2344 , Y02A50/245 , Y02T10/24 , Y02T10/47
摘要： A method for detecting the concentration of a specific gas (NOx) in an engine exhaust gas using a gas sensor and a process of correcting the gas sensor. According to the correcting process, the amount of moisture in the exhaust gas is estimated, then a a gas concentration detection signal output by the gas sensor on the basis of an estimated amount of moisture is corrected. Finally, the effect of the amount of moisture in the exhaust gas is removed or reduced from the detected value of gas concentration.
摘要翻译：一种使用气体传感器检测发动机排气中的特定气体（NOx）的浓度的方法和校正气体传感器的处理。根据校正处理，对废气中的水分量进行推定，校正气体传感器基于估计的水分量输出的气体浓度检测信号。最后，对湿度的影响废气从气体浓度的检测值中除去或减少。

4. 发明授权

US06375828B2 Methods and apparatus for measuring NOx gas concentration, for detecting exhaust gas concentration and for calibrating and controlling gas sensor 失效
标题翻译：用于测量NOx气体浓度的方法和装置，用于检测废气浓度和校准和控制气体传感器
公开(公告)号：US06375828B2
公开(公告)日：2002-04-23
申请号：US09045938
申请日：1998-03-23
申请人： Masashi Ando , Noboru Ishida , Satoshi Sugaya , Takafumi Oshima , Norihiko Nadanami , Takaki Otsuka , Yoshikuni Sato , Tatsuo Okumura , Yasuhisa Kuzuya
发明人： Masashi Ando , Noboru Ishida , Satoshi Sugaya , Takafumi Oshima , Norihiko Nadanami , Takaki Otsuka , Yoshikuni Sato , Tatsuo Okumura , Yasuhisa Kuzuya
IPC分类号： G01N27407
CPC分类号： F01N3/2066 , F01N3/0842 , F01N3/0871 , F01N11/00 , F01N2550/02 , F01N2550/03 , F01N2560/026 , F01N2570/14 , F01N2610/03 , F02D41/146 , F02D41/2474 , F02D41/28 , G01N27/4175 , G01N27/419 , G01N33/0037 , Y02A50/2344 , Y02A50/245 , Y02T10/24 , Y02T10/47
摘要： A nitrogen oxide concentration detector has a first measurement chamber 2 into which is introduced a measurement gas via a first diffusion resistance 1; an oxygen concentration detection electrode 7a for measuring the oxygen concentration in the measurement gas in said first measurement chamber 1; a first oxygen ion pump cell 6 for pumping out oxygen in the measurement gas from said first measurement chamber 2 based on the potential of said oxygen concentration detection electrode 7a; a second measurement chamber 8 into which the gas is introduced from said first measurement chamber 2 via a second diffusion resistance 3; and a second oxygen ion pump cell 8 having a pair of electrodes 8a,8b across which a voltage is applied to decompose NOx in the second measurement chamber 4 to pump out dissociated oxygen to cause a circuit Ip2 corresponding to the NOx concentration to flow in the second oxygen ion pump cell 8. Variation of NOx concentration is a function of variation of Ip2. The concentration obtained based on the Ip2 is corrected responsive to the oxygen concentration in the measurement gas. Particularly, a coefficient of the variation of the Ip2, gain, in said function is corrected responsive to the oxygen concentration in the measurement gas.
摘要翻译：氮氧化物浓度检测器具有通过第一扩散电阻1引入测量气体的第一测量室2; 用于测量所述第一测量室1中的测量气体中的氧浓度的氧浓度检测电极7a; 第一氧离子泵电池6，用于根据所述氧浓度检测电极7a的电位从所述第一测量室2抽出测量气体中的氧; 第二测量室8，通过第二扩散电阻3从所述第一测量室2引入气体; 以及第二氧离子泵电池8，具有一对电极8a，8b，施加电压以分解第二测量室4中的NOx，以排出解离的氧，使得与NOx浓度对应的电路Ip2流入第二氧离子泵电池8. NOx浓度的变化是Ip2变化的函数。响应于测量气体中的氧浓度校正基于Ip2获得的浓度。特别地，响应于测量气体中的氧浓度来校正所述功能中的Ip2增益的变化系数。

5. 发明授权

US06344134B1 Method for measuring NOx concentration and NOx concentration sensor 有权
标题翻译： NOx浓度和NOx浓度传感器的测量方法
公开(公告)号：US06344134B1
公开(公告)日：2002-02-05
申请号：US09232001
申请日：1999-01-15
申请人： Tessho Yamada , Noboru Ishida , Toshitaka Matsuura , Yoshiro Noda , Nobuhiro Hayakawa , Norihiko Nadanami , Satoshi Sugaya , Takaki Otsuka , Masashi Ando , Takafumi Oshima
发明人： Tessho Yamada , Noboru Ishida , Toshitaka Matsuura , Yoshiro Noda , Nobuhiro Hayakawa , Norihiko Nadanami , Satoshi Sugaya , Takaki Otsuka , Masashi Ando , Takafumi Oshima
IPC分类号： G01N27407
CPC分类号： G01N27/417
摘要： An apparatus and method using a two-serial space sensor (having first and second internal spaces 2,3) for accurately measuring NOx concentration in gas, e.g., exhausted from an internal combustion engine. Both NOx (nitrogen oxide) and oxygen are forced to be partially dissociated in the first space 2 to an oxygen concentration level of 2×10−7 to 2×10−10 atm by pumping out oxygen from the first space 2. The NOx concentration is determined based on the second current measured in the second space 4 and based on the NO dissociation percentage in the first chamber which is 0.5-50%, or preferably 2-20%. The NOx measurement accuracy is further improved when the above oxygen concentration level is maintained from 2×10−8 to 2×10−9 and the temperature drift of the sensor is maintained within ±5° C. under a sensor temperature range of 700-900° C.
摘要翻译：一种使用两串联空间传感器（具有第一和第二内部空间2,3）的装置和方法，用于精确测量例如从内燃机排出的气体中的NOx浓度。通过从第一空间2中抽出氧，迫使NOx（氮氧化物）和氧在第一空间2中部分地离解为2x10-7至2×10-10大气压的氧浓度水平。基于在第二空间4中测量的第二电流，并且基于第一室中的NO解离百分比为0.5-50％，或优选2-20％。在700-900℃的传感器温度范围内，当上述氧气浓度水平保持在2×10 -8至2×10 -9，并且传感器的温度漂移保持在±5℃以内时，NOx测量精度进一步提高。

6. 发明授权

US06923902B2 Methods and apparatus for measuring NOx gas concentration, for detecting exhaust gas concentration and for calibrating and controlling gas sensor 失效
标题翻译：用于测量NOx气体浓度的方法和装置，用于检测废气浓度和校准和控制气体传感器
公开(公告)号：US06923902B2
公开(公告)日：2005-08-02
申请号：US10066638
申请日：2002-02-06
申请人： Masashi Ando , Noboru Ishida , Satoshi Sugaya , Takafumi Oshima , Norihiko Nadanami , Takaki Otsuka , Yoshikuni Sato , Tatsuo Okumura , Yasuhisa Kuzuya
发明人： Masashi Ando , Noboru Ishida , Satoshi Sugaya , Takafumi Oshima , Norihiko Nadanami , Takaki Otsuka , Yoshikuni Sato , Tatsuo Okumura , Yasuhisa Kuzuya
IPC分类号： F01N3/08 , F01N3/20 , F01N11/00 , F02D41/14 , F02D41/24 , G01N27/417 , G01N27/419 , G01N33/00 , G01N27/41
CPC分类号： F01N3/2066 , F01N3/0842 , F01N3/0871 , F01N11/00 , F01N2550/02 , F01N2550/03 , F01N2560/026 , F01N2570/14 , F01N2610/03 , F02D41/146 , F02D41/2474 , F02D41/28 , G01N27/4175 , G01N27/419 , G01N33/0037 , Y02A50/2344 , Y02A50/245 , Y02T10/24 , Y02T10/47
摘要： A method for detecting the concentration of a specific component in gas discharged from an internal combustion engine, which includes detecting the concentration of the specific component under certain driving conditions to determine a zero point, which indicates a zero concentration of the specific component, of the detection output; calibrating the detection output of the gas sensor based on the determined zero point; and detecting the concentration of the specific component in exhaust gas based on the calibrated detection output.
摘要翻译：一种检测从内燃机排出的气体中的特定成分的浓度的方法，其特征在于，在特定的驱动条件下，检测特定成分的浓度，以确定表示该特定成分的零浓度的零点检测输出; 基于确定的零点校准气体传感器的检测输出; 并基于校准的检测输出来检测废气中特定成分的浓度。

7. 发明授权

US06214208B1 Method and apparatus for measuring NOx gas concentration 失效
标题翻译：测量NOx气体浓度的方法和装置
公开(公告)号：US06214208B1
公开(公告)日：2001-04-10
申请号：US08982869
申请日：1997-12-02
申请人： Masashi Ando , Noboru Ishida , Satoshi Sugaya , Takafumi Oshima , Norihiko Nadanami , Takaki Ootuka , Yoshikuni Sato , Tatsuo Okumura
发明人： Masashi Ando , Noboru Ishida , Satoshi Sugaya , Takafumi Oshima , Norihiko Nadanami , Takaki Ootuka , Yoshikuni Sato , Tatsuo Okumura
IPC分类号： G01N27407
CPC分类号： G01N27/4074 , Y10T436/179228
摘要： This is a method and apparatus for accurately determining a NOx concentration of a measurement gas that contains H2O and/or CO2, without being affected by a dissociation of H2O and/or CO2. In this method and apparatus, (1) the NOx-measurement gas containing H2O and/or CO2 is introduced to travel through a heated flow channel formed by an oxygen ion conductive solid ceramic electrolyte body that electrically control amount of O2 from the flow channel, (2) while said measurement gas travels, a residual gas including NO and H2O and/or CO2 is formed from the measurement gas, (3) said residual gas is flowed to contact a catalytic electrode to which a negative polarity of a low voltage that does not dissociate H2O and/or CO2 but dissociates NO is applied, so that said electrode dissociates a NO gas of the residual gas into N ions and O ions and flows an electric current through the electrolyte body in proportion to an amount of the O ions dissociated from said residual gas at the electrode, and (4) the NOx concentration in the measurement gas is determined based on the current. The low voltage preferably applied in the above (3) is about 350-450 mV.
摘要翻译：这是一种用于精确地测定含有H 2 O和/或CO 2的测量气体的NOx浓度而不受H 2 O和/或CO 2离解影响的方法和装置。在该方法和装置中，（1）NOx测量引入含有H 2 O和/或CO 2的气体通过由氧离子导电固体陶瓷电解质体形成的加热流动通道，该氧气离子传导性固体陶瓷电解质体从流动通道电气控制O2的量，（2）当所述测量气体行进时，残留气体包括从测量气体形成NO和H 2 O和/或CO 2，（3）所述残留气体流动以接触催化电极，在该催化电极处施加不分离H 2 O和/或CO 2但解离NO的低电压的负极性使得所述电极将残留气体的NO气体分解为N离子和O离子，并且与电极处的所述残留气体分离的O离子的量成比例地流过电解质体，并且（ 4）测定气体中的NOx浓度基于电流来确定。上述（3）中优选施加的低电压为约350〜450mV。

8. 发明授权

US6071393A Nitrogen oxide concentration sensor 失效
标题翻译：氮氧化物浓度传感器
公开(公告)号：US6071393A
公开(公告)日：2000-06-06
申请号：US866452
申请日：1997-05-30
申请人： Takafumi Oshima , Masashi Ando , Noboru Ishida , Satoshi Sugaya , Norihiko Nadanami
发明人： Takafumi Oshima , Masashi Ando , Noboru Ishida , Satoshi Sugaya , Norihiko Nadanami
IPC分类号： G01N27/407 , G01N33/00
CPC分类号： G01N27/4074 , G01N27/419
摘要： A small-sized inexpensive nitrogen oxide concentration sensor capable of measuring the concentration of the nitrogen oxide in a measuring gas to a high accuracy. A first oxygen pumping cell, an oxygen concentration measuring cell and a second oxygen pumping cell are formed in different solid electrolyte layers of zirconia and electrodes of oxygen concentration measuring cell are isolated from electrodes of the oxygen pumping cells by insulating film.
摘要翻译：一种能够以高精度测量测量气体中的氮氧化物的浓度的小型便宜的氮氧化物浓度传感器。在氧化锆的不同的固体电解质层中形成第一氧气泵浦单元，氧浓度测量单元和第二氧气泵浦单元，并且通过绝缘膜将氧浓度测量单元的电极与氧气泵浦单元的电极隔离。

9. 发明授权

US07306712B2 Gas sensor and method for measuring gas concentration using the same 失效
标题翻译：气体传感器及使用其测量气体浓度的方法
公开(公告)号：US07306712B2
公开(公告)日：2007-12-11
申请号：US10144835
申请日：2002-05-15
申请人： Masaya Watanabe , Norihiko Nadanami , Tomonori Kondo , Ryuji Inoue , Takafumi Oshima , Noboru Ishida
发明人： Masaya Watanabe , Norihiko Nadanami , Tomonori Kondo , Ryuji Inoue , Takafumi Oshima , Noboru Ishida
IPC分类号： G01N27/407
CPC分类号： G01N33/005 , G01N27/4074 , G01N33/006
摘要： This invention provides a gas sensor including a proton-conductive polymer electrolyte layer and a method for measuring gas concentration, that are capable of measuring gas concentration at high accuracy notwithstanding the presence of water vapor.
摘要翻译：本发明提供了一种气体传感器，其包括质子传导性聚合物电解质层和气体浓度测量方法，尽管存在水蒸气，但能够高精度地测量气体浓度。

10. 发明授权

US06568281B1 Ultrasonic-wave propagation-time measuring method, gas-pressure measuring method, gas-flow rate measuring method, and gas sensor 失效
标题翻译：超声波传播时间测量方法，气压测量方法，气体流量测量方法和气体传感器
公开(公告)号：US06568281B1
公开(公告)日：2003-05-27
申请号：US09635897
申请日：2000-08-11
申请人： Yoshikuni Sato , Keigo Banno , Hideki Ishikawa , Noboru Ishida , Takafumi Oshima
发明人： Yoshikuni Sato , Keigo Banno , Hideki Ishikawa , Noboru Ishida , Takafumi Oshima
IPC分类号： G01F166
CPC分类号： G01F1/668 , G01H5/00 , G01L11/06 , G01N29/024 , G01N29/38 , G01N29/4454 , G01N29/48 , G01N2291/0212 , G01N2291/0217 , G01N2291/02809 , G01N2291/02836 , G01N2291/02872 , G01N2291/101 , G01N2291/102
摘要： An ultrasonic-wave propagation time measuring method which enables determination of accurate propagation time, a gas-pressure measuring method, a gas-flow-rate measuring method, and a gas sensor. A reception wave which has been transmitted and received by an ultrasonic element 5 is shaped and integrated by an integration circuit 67 to obtain an integral value. A peak value of the integral value is held by a peak-hold circuit 39. As to detection of gas concentration, a resistance-voltage-division circuit 41 sets a reference value on the basis of the peak value, and a point in time when the integral value of the reception wave is judged by a comparator 43 to have reached the reference value is regarded as an arrival time. Subsequently, a gas concentration is detected on the basis of a period between the emission time and the arrival time. As to detection of gas pressure and flow rate, the gas pressure is detected on the basis of the peak value, and further, the gas flow rate is calculated on the basis of the gas pressure.
摘要翻译：能够确定准确的传播时间的超声波传播时间测量方法，气体压力测量方法，气体流量测量方法和气体传感器。由超声波元件5发送和接收的接收波被积分电路67整形并积分以获得积分值。积分值的峰值由峰值保持电路39保持。关于气体浓度的检测，电阻分压电路41基于峰值设定基准值，接收波的积分值由比较器43判定为已经达到基准值被认为是到达时间。随后，基于发射时间和到达时间之间的周期来检测气体浓度。关于气体压力和流量的检测，基于峰值检测气体压力，此外，基于气体压力计算气体流量。

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