JP7263349B2 - ガスセンサ - Google Patents
ガスセンサ Download PDFInfo
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- JP7263349B2 JP7263349B2 JP2020527527A JP2020527527A JP7263349B2 JP 7263349 B2 JP7263349 B2 JP 7263349B2 JP 2020527527 A JP2020527527 A JP 2020527527A JP 2020527527 A JP2020527527 A JP 2020527527A JP 7263349 B2 JP7263349 B2 JP 7263349B2
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- 239000007789 gas Substances 0.000 claims description 196
- 239000001301 oxygen Substances 0.000 claims description 143
- 229910052760 oxygen Inorganic materials 0.000 claims description 143
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 138
- 238000005259 measurement Methods 0.000 claims description 62
- 239000007784 solid electrolyte Substances 0.000 claims description 49
- 238000005086 pumping Methods 0.000 claims description 46
- 238000001514 detection method Methods 0.000 claims description 44
- 230000008859 change Effects 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 138
- 238000009792 diffusion process Methods 0.000 description 41
- 239000000758 substrate Substances 0.000 description 22
- 230000001681 protective effect Effects 0.000 description 14
- 125000006850 spacer group Chemical group 0.000 description 13
- 230000006866 deterioration Effects 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 8
- 230000007423 decrease Effects 0.000 description 8
- 239000000919 ceramic Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 239000011195 cermet Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- -1 oxygen ion Chemical class 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/406—Cells and probes with solid electrolytes
- G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
- G01N27/41—Oxygen pumping cells
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/417—Systems using cells, i.e. more than one cell and probes with solid electrolytes
- G01N27/419—Measuring voltages or currents with a combination of oxygen pumping cells and oxygen concentration cells
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/406—Cells and probes with solid electrolytes
- G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
- G01N27/4071—Cells and probes with solid electrolytes for investigating or analysing gases using sensor elements of laminated structure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0006—Calibrating gas analysers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0037—NOx
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Immunology (AREA)
- Pathology (AREA)
- General Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Combustion & Propulsion (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Biomedical Technology (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
Description
積層された酸素イオン伝導性の複数の固体電解質層を有し、被測定ガスを導入して流通させる被測定ガス流通部が内部に設けられた積層体と、
前記積層体の内部に設けられ、前記被測定ガス中の特定ガス濃度の検出の基準となる基準ガスが導入される基準電極と、
前記被測定ガス流通部のうちの測定室の内周面上に設けられた測定電極と、
前記積層体のうち前記被測定ガスに晒される部分に設けられた被測定ガス側電極と、
前記被測定ガス側電極の周囲から前記基準電極の周囲に酸素を汲み入れる酸素汲み入れ制御を行う制御手段と、
前記酸素汲み入れ制御の実行中に、前記基準電極と前記測定電極との間の電圧が目標電圧になるよう前記測定電極の周囲から前記特定ガスに由来する酸素を汲み出したときの濃度検出用ポンプ電流を測定し、該濃度検出用ポンプ電流に基づいて前記被測定ガスの特定ガス濃度を演算する演算手段と、
を備え、
前記演算手段は、前記酸素汲み入れ制御を実行しなかったときの前記基準電極と前記被測定ガス側電極との間の第1ベース電圧と前記酸素汲み入れ制御を実行したときの前記基準電極と前記被測定ガス側電極との間の第2ベース電圧との差に基づいて、前記被測定ガスの特定ガス濃度を補正する、
ものである。
Claims (5)
- 積層された酸素イオン伝導性の複数の固体電解質層を有し、被測定ガスを導入して流通させる被測定ガス流通部が内部に設けられた積層体と、
前記積層体の内部に設けられ、前記被測定ガス中の特定ガス濃度の検出の基準となる基準ガスが導入される基準電極と、
前記被測定ガス流通部のうちの測定室の内周面上に設けられた測定電極と、
前記積層体のうち前記被測定ガスに晒される部分に設けられた被測定ガス側電極と、
前記被測定ガス側電極の周囲から前記基準電極の周囲に酸素を汲み入れる酸素汲み入れ制御を行う制御手段と、
前記酸素汲み入れ制御の実行中に、前記基準電極と前記測定電極との間の電圧が目標電圧になるよう前記測定電極の周囲から前記特定ガスに由来する酸素を汲み出したときの濃度検出用ポンプ電流を測定し、該濃度検出用ポンプ電流に基づいて前記被測定ガスの特定ガス濃度を演算する演算手段と、
を備え、
前記演算手段は、前記酸素汲み入れ制御を実行しなかったときの前記基準電極と前記被測定ガス側電極との間の第1ベース電圧と前記酸素汲み入れ制御を実行したときの前記基準電極と前記被測定ガス側電極との間の第2ベース電圧との差に基づいて、前記目標電圧を補正するか、前記目標電圧を補正することなく前記被測定ガスの特定ガス濃度を補正する、
ガスセンサ。 - 前記酸素汲み入れ制御手段は、前記被測定ガス側電極と前記基準電極との間に繰り返しオンオフされる電圧を印加することにより前記酸素汲み入れ制御を行うものであり、
前記演算手段は、前記酸素汲み入れ制御で前記繰り返しオンオフされる電圧がオフの期間に、前記濃度検出用ポンプ電流及び前記第2ベース電圧を測定する、
請求項1に記載のガスセンサ。 - 前記演算手段は、前記酸素汲み入れ制御で前記繰り返しオンオフされる電圧がオフの期間であって次回オンになる直前のタイミングで、前記濃度検出用ポンプ電流及び前記第2ベース電圧を測定する、
請求項2に記載のガスセンサ。 - 前記演算手段は、前記目標電圧を補正する場合、更に、熱起電力の経時変化量に基づいて前記目標電圧を補正し、前記目標電圧を補正することなく前記被測定ガスの特定ガス濃度を補正する場合、更に、熱起電力の経時変化量に基づいて前記被測定ガスの特定ガス濃度を補正する、
請求項1~3のいずれか1項に記載のガスセンサ。 - 前記演算手段は、前記目標電圧を補正する場合、前記濃度検出用ポンプ電流を測定するにあたり、今回の前記第1ベース電圧と前記第2ベース電圧との差と、過去の前記第1ベース電圧と前記第2ベース電圧との差との差分に基づいて、前記過去において使用した前記目標電圧を補正し、補正後の前記目標電圧になるよう前記測定電極の周囲から前記特定ガスに由来する酸素を汲み出したときの前記濃度検出用ポンプ電流を測定する、
請求項1~4のいずれか1項に記載のガスセンサ。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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JP2018122843 | 2018-06-28 | ||
JP2018122843 | 2018-06-28 | ||
PCT/JP2019/025045 WO2020004356A1 (ja) | 2018-06-28 | 2019-06-25 | ガスセンサ |
Publications (2)
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JPWO2020004356A1 JPWO2020004356A1 (ja) | 2021-07-15 |
JP7263349B2 true JP7263349B2 (ja) | 2023-04-24 |
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JP2020527527A Active JP7263349B2 (ja) | 2018-06-28 | 2019-06-25 | ガスセンサ |
Country Status (4)
Country | Link |
---|---|
US (1) | US11959877B2 (ja) |
JP (1) | JP7263349B2 (ja) |
DE (1) | DE112019003230T5 (ja) |
WO (1) | WO2020004356A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP7301781B2 (ja) * | 2020-03-26 | 2023-07-03 | 日本碍子株式会社 | センサ素子のクラック検出方法及びセンサ素子の評価方法 |
DE112022000733T5 (de) | 2021-03-31 | 2023-11-23 | Ngk Insulators, Ltd. | Sensorelement und Gassensor |
WO2022210347A1 (ja) | 2021-03-31 | 2022-10-06 | 日本碍子株式会社 | センサ素子及びガスセンサ |
WO2022210346A1 (ja) | 2021-03-31 | 2022-10-06 | 日本碍子株式会社 | センサ素子及びガスセンサ |
DE102021212821A1 (de) * | 2021-11-15 | 2023-05-17 | Vitesco Technologies GmbH | Verfahren zum Betreiben eines Abgassensors für eine Brennkraftmaschine und Abgassensor |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120097553A1 (en) | 2010-10-20 | 2012-04-26 | Thomas Classen | Method for measuring and/or calibrating a gas sensor |
JP2015200643A (ja) | 2014-03-31 | 2015-11-12 | 日本碍子株式会社 | ガスセンサ |
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EP2730917B1 (en) | 2011-07-04 | 2016-04-20 | NGK Insulators, Ltd. | Method and device for assembling a gas sensor |
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2019
- 2019-06-25 DE DE112019003230.5T patent/DE112019003230T5/de active Pending
- 2019-06-25 JP JP2020527527A patent/JP7263349B2/ja active Active
- 2019-06-25 WO PCT/JP2019/025045 patent/WO2020004356A1/ja active Application Filing
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2020
- 2020-12-21 US US17/128,361 patent/US11959877B2/en active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120097553A1 (en) | 2010-10-20 | 2012-04-26 | Thomas Classen | Method for measuring and/or calibrating a gas sensor |
JP2015200643A (ja) | 2014-03-31 | 2015-11-12 | 日本碍子株式会社 | ガスセンサ |
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DE112019003230T5 (de) | 2021-03-11 |
US11959877B2 (en) | 2024-04-16 |
US20210109058A1 (en) | 2021-04-15 |
WO2020004356A1 (ja) | 2020-01-02 |
JPWO2020004356A1 (ja) | 2021-07-15 |
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