JP4314198B2 - センサ素子 - Google Patents
センサ素子 Download PDFInfo
- Publication number
- JP4314198B2 JP4314198B2 JP2004561038A JP2004561038A JP4314198B2 JP 4314198 B2 JP4314198 B2 JP 4314198B2 JP 2004561038 A JP2004561038 A JP 2004561038A JP 2004561038 A JP2004561038 A JP 2004561038A JP 4314198 B2 JP4314198 B2 JP 4314198B2
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- JP
- Japan
- Prior art keywords
- diffusion
- diffusion barrier
- electrode
- region
- sensor element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000009792 diffusion process Methods 0.000 claims description 80
- 238000005259 measurement Methods 0.000 claims description 36
- 230000004888 barrier function Effects 0.000 claims description 32
- 238000005192 partition Methods 0.000 claims description 19
- 239000007784 solid electrolyte Substances 0.000 claims description 16
- 239000007789 gas Substances 0.000 description 57
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 15
- 239000001301 oxygen Substances 0.000 description 15
- 229910052760 oxygen Inorganic materials 0.000 description 15
- 239000000203 mixture Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000011149 active material Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
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
- G01N27/4071—Cells and probes with solid electrolytes for investigating or analysing gases using sensor elements of laminated structure
- G01N27/4072—Cells and probes with solid electrolytes for investigating or analysing gases using sensor elements of laminated structure characterized by the diffusion barrier
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
Description
発明の利点
これに対して、独立請求項に記載された特徴を備えた本発明によるセンサ素子は、測定ガスの組成がその他の点では同じならば、センサ素子の測定信号の圧力変動に対する依存性が低下するという利点を有している。
図面
本発明の2つの実施例を図に示し、以下の説明においてより詳細に説明する。図1は、本発明の第1の実施例として、図2における線I−Iによる本発明のセンサ素子の縦断面図を示しており、図2は、図1の線II−IIによる第1の実施例の断面図を示しており、図3は、本発明の第2の実施例として、図4の線III−IIIによるセンサ素子の長手軸に対して垂直な断面図を示しており、図4は、図3の線IV−IVによる第2の実施例の断面図を示している。
実施例の説明
図1及び図2は、本発明の第1の実施例として、層状に形成されたプレーナセンサ素子10を示している。プレーナセンサ素子10はハウジング内に気密に配置されており、内燃機関の排気ガス中の酸素割合の検出に使用される。センサ素子10の図示されていない部分には給電領域とコンタクト領域とが含まれている。これらの領域の構造は当業者には周知である。
Claims (4)
- 測定ガスの特性を求めるための、有利には測定ガス内のガス成分の濃度を求めるためのセンサ素子であって、固体電解質(21,22)上に取り付けられた少なくとも1つの電極(42,43)を有しており、該電極は拡散路を介して測定ガスと連通しており、該拡散路の中に拡散隔壁(51,151)が配置されている形式のものにおいて、
前記電極(42,43)とは逆側の拡散隔壁(51,151)の領域に、前記電極(42,43)とは逆側の拡散隔壁(51,151)の該領域における拡散断面積を減少させる手段(52,152)が設けられており、該手段(52,152)は前記拡散隔壁(51,151)の内表面の領域に及び/又は前記ガス流入口(36)の領域に設けられた少なくとも1つの柱状の素子(152)であり、該柱状素子(152)の高さは前記拡散隔壁(151)の高さに相当し、前記拡散隔壁(51,151)は実質的に円筒又は中空円筒の形状を有しており、さらに
- 前記手段(52,152)は拡散隔壁(51,151)よりも低い多孔度を有している及び/又はガス不透過性である、請求項1記載のセンサ素子。
- 前記電極(42,43)は環状で、前記拡散隔壁(51,151)を包囲しており、このため、排気ガスはガス流入口(36)を通って前記拡散隔壁(51,151)の内部領域に入り、該内部領域から前記拡散隔壁(51,151)を介して前記電極(42,43)に達することができる、請求項1又は2記載のセンサ素子。
- 前記手段は、前記拡散隔壁(51,151)の内表面の領域に及び/又は前記ガス流入口(36)の領域に設けられた環状の素子(52)である、請求項1又は2記載のセンサ素子。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10259526A DE10259526A1 (de) | 2002-12-19 | 2002-12-19 | Sensorelement |
PCT/DE2003/004110 WO2004057322A2 (de) | 2002-12-19 | 2003-12-12 | Sensorelement mit mittel zur verringerung des diffusionsquerschnitts |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006503308A JP2006503308A (ja) | 2006-01-26 |
JP4314198B2 true JP4314198B2 (ja) | 2009-08-12 |
Family
ID=32519117
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004561038A Expired - Fee Related JP4314198B2 (ja) | 2002-12-19 | 2003-12-12 | センサ素子 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20060207879A1 (ja) |
EP (1) | EP1581806B1 (ja) |
JP (1) | JP4314198B2 (ja) |
DE (1) | DE10259526A1 (ja) |
WO (1) | WO2004057322A2 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004063084A1 (de) * | 2004-12-28 | 2006-07-06 | Robert Bosch Gmbh | Sensorelement für einen Gassensor |
DE102007062733A1 (de) * | 2007-12-27 | 2009-07-02 | Robert Bosch Gmbh | Sensorelement mit verbesserter Vergiftungsresistenz |
DE102009029415A1 (de) * | 2009-09-14 | 2011-03-24 | Robert Bosch Gmbh | Sensorelement mit mehrteiliger Diffusionsbarriere |
CN109632915A (zh) * | 2018-12-18 | 2019-04-16 | 武汉泽科宁电子科技有限公司 | 一种氮气氧化物传感器芯片及其制造方法 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2911548A1 (de) * | 1979-03-23 | 1980-09-25 | Bayer Ag | Gasdetektor |
US4446000A (en) * | 1983-05-13 | 1984-05-01 | Lynn Products Company, Incorporated | Oxygen sensor and method for making same |
JPH065220B2 (ja) * | 1983-07-04 | 1994-01-19 | トヨタ自動車株式会社 | 酸素濃度検出器 |
JPS60170770U (ja) * | 1984-04-20 | 1985-11-12 | トヨタ自動車株式会社 | 酸素濃度検出器 |
JPH0676989B2 (ja) * | 1986-02-04 | 1994-09-28 | 株式会社豊田中央研究所 | 限界電流式酸素センサ |
DE3728189A1 (de) * | 1986-09-03 | 1988-03-10 | Volkswagen Ag | Druckwellenlader fuer eine brennkraftmaschine |
JPS63193058A (ja) * | 1987-02-06 | 1988-08-10 | Nissan Motor Co Ltd | 酸素センサ |
JPH0723735Y2 (ja) * | 1988-02-01 | 1995-05-31 | トヨタ自動車株式会社 | 酸素濃度センサ |
DE4032436A1 (de) * | 1990-10-12 | 1992-04-16 | Bosch Gmbh Robert | Sensorelement fuer grenzstromsensoren zur bestimmung des (gamma)-wertes von gasgemischen |
DE19517144C1 (de) * | 1995-05-10 | 1996-07-04 | Draegerwerk Ag | Filter für elektrochemische Meßzelle |
JP3701124B2 (ja) * | 1998-07-08 | 2005-09-28 | 日本碍子株式会社 | ガスセンサ及び窒素酸化物センサ |
JP2000105214A (ja) * | 1998-09-29 | 2000-04-11 | Hitachi Ltd | エンジンの排気成分センサ |
JP4268732B2 (ja) * | 1999-01-25 | 2009-05-27 | 日本特殊陶業株式会社 | ガスセンサ |
DE10013881B4 (de) * | 2000-03-21 | 2007-01-11 | Robert Bosch Gmbh | Sensorelement mit katalytisch aktiver Schicht und Verfahren zur Herstellung desselben |
DE10013882A1 (de) * | 2000-03-21 | 2001-10-04 | Bosch Gmbh Robert | Sensorelement mit Vorkatalyse |
JP4520648B2 (ja) * | 2001-01-31 | 2010-08-11 | 日本特殊陶業株式会社 | ガスセンサ及びその製造方法 |
DE10121889C2 (de) * | 2001-05-05 | 2003-07-24 | Bosch Gmbh Robert | Sensorelement |
-
2002
- 2002-12-19 DE DE10259526A patent/DE10259526A1/de not_active Withdrawn
-
2003
- 2003-12-12 JP JP2004561038A patent/JP4314198B2/ja not_active Expired - Fee Related
- 2003-12-12 EP EP03785563A patent/EP1581806B1/de not_active Expired - Lifetime
- 2003-12-12 US US10/540,331 patent/US20060207879A1/en not_active Abandoned
- 2003-12-12 WO PCT/DE2003/004110 patent/WO2004057322A2/de active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2004057322A3 (de) | 2004-09-16 |
JP2006503308A (ja) | 2006-01-26 |
EP1581806A2 (de) | 2005-10-05 |
WO2004057322A2 (de) | 2004-07-08 |
DE10259526A1 (de) | 2004-07-15 |
US20060207879A1 (en) | 2006-09-21 |
EP1581806B1 (de) | 2011-11-16 |
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