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公开(公告)号：EP1482306B1
公开(公告)日：2014-09-24
申请号：EP04253253.1
申请日：2004-06-01
发明人： Fujita, Hiroki , Fujita, Koichi , Sugaya, Satoshi , Kato, Kenji , Inoue, Ryuji , Ishida, Noboru
IPC分类号： G01N27/12
CPC分类号： G01N27/121
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公开(公告)号：EP0903576A3
公开(公告)日：2001-01-03
申请号：EP98117911.2
申请日：1998-09-22
发明人： Inoue, Ryuji , Kitanoya, Shoji , Kato, Kenji , Fuma, Tomohiro , Oshima, Takafumi
IPC分类号： G01N27/407 , G01N27/417
CPC分类号： G01N27/417
摘要： A gas sensor having a simple structure and capable of accurately measuring the combustible gas component concentration of a measurement gas such as an exhaust gas despite variations in the oxygen concentration of the exhaust gas and variations in element temperature. The gas sensor 1 has the following constituent features: (1) first processing space 9: a measurement gas is introduced thereinto via a first gas passage 11; (2) second processing space 10: a gas contained in the first processing space 9 is introduced thereinto via a second gas passage 13; (3) oxygen concentration detection element 4: adapted to measure the oxygen concentration of a gas contained in the first processing space 9; (4) oxygen pumping element 3: adapted to reduce the oxygen concentration of the measurement gas introduced into the first processing space 9 within a range such that water vapor contained in the measurement gas is not substantially decomposed; (5) oxidation catalyst section 16: adapted to accelerate combustion of a combustible gas component contained in a gas introduced into the second processing space 10; and (6) combustible gas component concentration detection element 5: a constant voltage is applied thereto, and element 5 has an output current which varies according to the amount of oxygen consumed by combustion of a combustible gas component contained in the gas introduced into the second processing space 10 from the first processing space, to thereby provide information regarding the concentration of the combustible gas component of the measurement gas based on the output current.
摘要翻译： 气体传感器具有简单的结构，并且能够精确地测量废气等测量气体的可燃气体组分浓度，而不管排气的氧浓度和元件温度的变化如何。 气体传感器1具有以下构成特征：（1）第一处理空间9：经由第一气体流路11导入测定气体; （2）第二处理空间10：第一处理空间9内的气体经由第二气体通路13被导入， （3）氧浓度检测元件4，用于测定第一处理空间9内的气体的氧浓度; （4）氧泵元件3：用于使导入第一处理空间9的测定气体的氧浓度在使测定气体中所含的水蒸气实质上不分解的范围内， （5）氧化催化剂部16，其用于促进被导入到第二处理空间10内的气体中所含的可燃性气体成分的燃烧; （6）可燃性气体成分浓度检测元件5：施加恒定电压，元件5的输出电流根据导入到第二个气体中的气体中含有的可燃性气体成分的燃烧所消耗的氧量而变化 从第一处理空间处理空间10，从而基于输出电流提供关于测量气体的可燃气体组分浓度的信息。
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公开(公告)号：EP2469274A1
公开(公告)日：2012-06-27
申请号：EP11194598.6
申请日：2011-12-20
发明人： Kato, Kenji , Ito, Kouhei
IPC分类号： G01N27/419 , G01N27/407
CPC分类号： G01N27/419
摘要： [Objective] To provide a gas sensor which can improve the sensitivity to NO x .
[Means for Solution] A reduction section 18 for reducing NO 2 contained in exhaust gas to NO is provided on the upstream side of a first diffusion resistor section 103 provided to limit the flow of the exhaust gas into a first measurement chamber 101. When NO x passes through the first diffusion resistor section 103, NO 2 which is greater in molecular weight than NO is lower in the degree of diffusion than NO. Since NO 2 is reduced to NO at the reduction section 18, the exhaust gas passing through the first diffusion resistor section 103 hardly contains NO 2 . Therefore, the speed of flow of NO x through the first diffusion resistor section 103 is not limited by NO 2 , whereby sensitivity for detection of NO x can be improved.摘要翻译： [目的]提供一种可提高对NOx的灵敏度的气体传感器。 [解决手段]在第一扩散阻力部103的上游侧，设置用于将废气中所含的NO 2还原为NO的还原部18，该第一扩散阻滞部103设置成限制废气向第一测定室101内的流动。 通过第一扩散电阻部分103，分子量大于NO的NO2的扩散程度低于NO。 NO 2在还原部18被还原成NO，因此通过第一扩散阻力部103的排气几乎不含有NO 2。 因此，通过第一扩散电阻部103的NOx的流动速度不受NO2的限制，由此可以提高用于检测NOx的灵敏度。
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公开(公告)号：EP0903576A2
公开(公告)日：1999-03-24
申请号：EP98117911.2
申请日：1998-09-22
发明人： Inque, Ryuji , Kitanoya, Shoji , Kato, Kenji , Fuma, Tomohiro ,
IPC分类号： G01N27/407
CPC分类号： G01N27/417
摘要： A gas sensor having a simple structure and capable of accurately measuring the combustible gas component concentration of a measurement gas such as an exhaust gas despite variations in the oxygen concentration of the exhaust gas and variations in element temperature. The gas sensor 1 has the following constituent features: (1) first processing space 9: a measurement gas is introduced thereinto via a first gas passage 11; (2) second processing space 10: a gas contained in the first processing space 9 is introduced thereinto via a second gas passage 13; (3) oxygen concentration detection element 4: adapted to measure the oxygen concentration of a gas contained in the first processing space 9; (4) oxygen pumping element 3: adapted to reduce the oxygen concentration of the measurement gas introduced into the first processing space 9 within a range such that water vapor contained in the measurement gas is not substantially decomposed; (5) oxidation catalyst section 16: adapted to accelerate combustion of a combustible gas component contained in a gas introduced into the second processing space 10; and (6) combustible gas component concentration detection element 5: a constant voltage is applied thereto, and element 5 has an output current which varies according to the amount of oxygen consumed by combustion of a combustible gas component contained in the gas introduced into the second processing space 10 from the first processing space, to thereby provide information regarding the concentration of the combustible gas component of the measurement gas based on the output current.
摘要翻译： 一种气体传感器，其结构简单，能够精确地测量诸如废气的测量气体的可燃气体成分浓度，尽管排气的氧浓度有变化，元件温度也有变化。 气体传感器1具有以下构成特征：（1）第一处理空间9：经由第一气体通路11导入测定气体; （2）第二处理空间10：包含在第一处理空间9中的气体经由第二气体通道13引入其中; （3）氧浓度检测元件4：适于测量包含在第一处理空间9中的气体的氧浓度; （4）氧气抽吸元件3：适于在测量气体中含有的水蒸气基本上不分解的范围内降低引入第一处理空间9的测量气体的氧浓度; （5）氧化催化剂部分16：适于加速包含在引入第二处理空间10的气体中的可燃气体组分的燃烧; 和（6）可燃性气体成分浓度检测元件5：向其施加恒定电压，元件5具有输出电流，该输出电流根据包含在导入第二电极的气体中的可燃性气体成分的燃烧消耗的氧量而变化 处理空间10，从而基于输出电流提供关于测量气体的可燃气体成分的浓度的信息。
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公开(公告)号：EP2083263A3
公开(公告)日：2015-09-02
申请号：EP09000735.2
申请日：2009-01-20
发明人： Kato, Kenji , Sasaki, Hisashi , Shiotani, Koji
IPC分类号： G01N27/41 , G01N33/00 , G01N27/407 , G01N27/417
CPC分类号： G01N33/0037 , G01N27/4074 , G01N27/4075 , G01N27/417 , Y02A50/245
摘要： A NOx sensor includes a sensor element equipped with first and second pumping cells to define first and second measurement chambers. The first pumping cell exerts an oxygen pumping action against the first measurement chamber to adjust the oxygen concentration in the gas under measurement within the first measurement chamber to a given level. The second pumping cell exerts an oxygen pumping action against the second measurement chamber to produce a pumping cell current according to the NOx concentration in the gas under measurement. When the moisture content of the gas under measurement changes from 2 vol% to 8 vol%, the NOx sensor allows a variation of NOx concentration detection value based on the pumping cell current in such a manner that the NOx concentration detection value reaches a transient peak value of 20 ppm, or smaller and converges to ± 5 ppm of a reference value within 5 seconds.
Also a method of production of said sensor is disclosed.-
公开(公告)号：EP2083263A2
公开(公告)日：2009-07-29
申请号：EP09000735.2
申请日：2009-01-20
发明人： Kato, Kenji , Sasaki, Hisashi , Shiotani, Koji
CPC分类号： G01N33/0037 , G01N27/4074 , G01N27/4075 , G01N27/417 , Y02A50/245
摘要： A NOx sensor includes a sensor element equipped with first and second pumping cells to define first and second measurement chambers. The first pumping cell exerts an oxygen pumping action against the first measurement chamber to adjust the oxygen concentration in the gas under measurement within the first measurement chamber to a given level. The second pumping cell exerts an oxygen pumping action against the second measurement chamber to produce a pumping cell current according to the NOx concentration in the gas under measurement. When the moisture content of the gas under measurement changes from 2 vol% to 8 vol%, the NOx sensor allows a variation of NOx concentration detection value based on the pumping cell current in such a manner that the NOx concentration detection value reaches a transient peak value of 20 ppm, or smaller and converges to ± 5 ppm of a reference value within 5 seconds.
Also a method of production of said sensor is disclosed.摘要翻译： NOx传感器包括配备有第一和第二泵浦单元以限定第一和第二测量室的传感器元件。 第一泵送单元对第一测量室施加氧气抽吸作用，以将第一测量室内测量气体中的氧浓度调节至给定水平。 第二泵送单元对第二测量室施加氧气抽吸作用，以根据测量气体中的NOx浓度产生泵浦电池电流。 当测量气体的水分含量从2vol％变化到8vol％时，NOx传感器允许基于泵浦单元电流的NOx浓度检测值的变化，使得NOx浓度检测值达到瞬时峰值 值在20ppm以下，并且在5秒内收敛到参考值的±5ppm。 还公开了一种生产该传感器的方法。
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公开(公告)号：EP2469274B1
公开(公告)日：2018-08-29
申请号：EP11194598.6
申请日：2011-12-20
发明人： Kato, Kenji , Ito, Kouhei
IPC分类号： G01N27/419 , G01N27/407
CPC分类号： G01N27/419
摘要： [Objective] To provide a gas sensor which can improve the sensitivity to NO x . [Means for Solution] A reduction section 18 for reducing NO 2 contained in exhaust gas to NO is provided on the upstream side of a first diffusion resistor section 103 provided to limit the flow of the exhaust gas into a first measurement chamber 101. When NO x passes through the first diffusion resistor section 103, NO 2 which is greater in molecular weight than NO is lower in the degree of diffusion than NO. Since NO 2 is reduced to NO at the reduction section 18, the exhaust gas passing through the first diffusion resistor section 103 hardly contains NO 2 . Therefore, the speed of flow of NO x through the first diffusion resistor section 103 is not limited by NO 2 , whereby sensitivity for detection of NO x can be improved.
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8.发明授权NOx concentration detection apparatus and nox concentration detection method 有权的NOx浓度检测装置和NOx浓度的检测方法
公开(公告)号：EP2490018B1
公开(公告)日：2016-12-28
申请号：EP12155963.7
申请日：2012-02-17
IPC分类号： G01N33/00 , G01N27/419
CPC分类号： G01N27/419
摘要： An apparatus and method for individually detecting NO and NO 2 concentrations as NO X components of an object gas. An NO concentration corresponding value is obtained from a first detection element not having a reduction section. An NO concentration corresponding value is obtained from a second detection element having a reduction section, and having an NO 2 /NO sensitivity ratio greater than that of the first detection element. The difference ”C between the NO concentration corresponding values of the two detection elements is obtained, and divided by the difference ”S between the NO 2 /NO sensitivity ratios of the two detection elements, whereby an NO 2 concentration corresponding value is obtained. A value obtained by multiplying the NO 2 concentration corresponding value by the NO 2 /NO sensitivity ratio of the second detection element is subtracted from the NO concentration corresponding value of the second detection element, whereby an NO concentration corresponding value is obtained.
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9.发明公开NOx concentration detection apparatus and nox concentration detection method 有权的NOx浓度检测装置和NOx浓度的检测方法
公开(公告)号：EP2490018A3
公开(公告)日：2014-06-25
申请号：EP12155963.7
申请日：2012-02-17
IPC分类号： G01N33/00 , G01N27/419
CPC分类号： G01N27/419
摘要： An apparatus and method for individually detecting NO and NO 2 concentrations as NO X components of an object gas. An NO concentration corresponding value is obtained from a first detection element not having a reduction section. An NO concentration corresponding value is obtained from a second detection element having a reduction section, and having an NO 2 /NO sensitivity ratio greater than that of the first detection element. The difference ΔC between the NO concentration corresponding values of the two detection elements is obtained, and divided by the difference ΔS between the NO 2 /NO sensitivity ratios of the two detection elements, whereby an NO 2 concentration corresponding value is obtained. A value obtained by multiplying the NO 2 concentration corresponding value by the NO 2 /NO sensitivity ratio of the second detection element is subtracted from the NO concentration corresponding value of the second detection element, whereby an NO concentration corresponding value is obtained.
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公开(公告)号：EP0903576B1
公开(公告)日：2006-11-02
申请号：EP98117911.2
申请日：1998-09-22
发明人： Inoue, Ryuji , Kitanoya, Shoji , Kato, Kenji , Fuma, Tomohiro , Oshima, Takafumi
IPC分类号： G01N27/407 , G01N27/417
CPC分类号： G01N27/417
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