WO1998003861A1 - Gassensor - Google Patents
Gassensor Download PDFInfo
- Publication number
- WO1998003861A1 WO1998003861A1 PCT/DE1997/001366 DE9701366W WO9803861A1 WO 1998003861 A1 WO1998003861 A1 WO 1998003861A1 DE 9701366 W DE9701366 W DE 9701366W WO 9803861 A1 WO9803861 A1 WO 9803861A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas
- protective sleeve
- housing
- inner protective
- opening
- Prior art date
Links
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
-
- 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
- G01N27/4077—Means for protecting the electrolyte or the electrodes
Definitions
- the arrangement of the inner gas openings on the ring flange between the outer and inner protective sleeve has the effect that condensed water carried in the exhaust gas does not reach the sensitive area of the sensor element directly, but is directed in the direction of the interior of the housing.
- FIG. 1 shows a section of a gas sensor on the exhaust gas side, for example an electrochemical oxygen sensor, with a metallic housing section 11 on the exhaust gas side, in which a planar sensor element 12 is fixed gas-tight.
- the exhaust-side housing section 11 is part of a housing composed, for example, of two parts.
- a connection-side housing section, not shown, in which the contacting of the sensor element 12 is accommodated, is welded gas-tight to the exhaust-side housing section 11.
- the housing section 11 consists of a cylinder sleeve 14 with an opening 15 on the exhaust gas side.
- the cylinder sleeve 14 is designed at one point with a radially inwardly directed indentation 16.
- a first ceramic molded part 21 with a first passage 22, a second ceramic molded part 23 with a second passage 24 and a sealing element 25 arranged between them are held by the indentation 16.
- a contact pressure acts on the sealing element 25, which consists of pre-pressed steatite powder.
- the steatite powder of the sealing element 25 is pressed against the sensor element 12 and against the inner wall of the housing section 11 by the contact pressure, as a result of which the sensor element 12 is held gas-tight in the housing section 11.
- the sensor element 12 consists of an oxygen ion-conducting solid electrolyte ceramic with electrodes, not shown. At least one electrode is exposed to the exhaust gas and forms a sensitive area 13 on the sensor element 12.
- the planar sensor element 12 is laminated together from a plurality of ceramic foils, sintered and, in the sintered state, has a rectangular cross section.
- a double-walled protective tube 30 with an outer protective sleeve 31 and an inner one
- the inner protective sleeve 32 attached.
- the inner protective sleeve 32 surrounds a measuring gas space 34 into which the sensor element 12 with the sensitive section 13 is immersed.
- the outer protective sleeve 31 and the inner protective sleeve 32 are spaced apart from one another, so that there is a circumferential between them
- Intermediate space 35 is formed, which serves to forward the exhaust gas into the measuring gas space 34.
- the outer protective sleeve 31 is designed as a cylindrical sleeve 36 which tapers to a cylindrical section 37 at the end on the housing side, the outer diameter of the cylindrical section 37 corresponding to the inner diameter of the opening 15 of the housing section 11.
- the sleeve 36 is slightly bent outwards for manufacturing reasons. However, it is equally conceivable to allow the sleeve 36 to run out cylindrically at the exhaust-side end or to provide it with a bend directed towards the inner protective sleeve 32.
- the sleeve 36 is designed with a closed outer surface. The gas inlet and / or gas outlet with respect to the
- Intermediate space 35 is formed by an end gas opening 39.
- the inner protective sleeve 32 has a rectangular cross section corresponding to the cross section of the sensor element 12 and has four side walls 41.
- the four side walls 41 have a sufficient distance from the sensor element 12, the distance being approximately the same on all four sides. At the exhaust end, the four side walls 41 converge to form a floor 42.
- the side walls 41 and the bottom 42 surround the measuring gas space 34 (FIGS. 2 and 3).
- a gas opening 44 for gas outlet and / or gas inlet is arranged in the bottom 42 in alignment with the center line.
- the exhaust-side end of the inner protective sleeve 32 protrudes beyond the exhaust-side end of the outer protective sleeve 31. This creates a circumferential gap 50 between the inner wall of the sleeve 36 of the outer protective sleeve 31 and the outside of the side walls 41 of the inner protective sleeve 32, which gap forms the front gas opening 39 for gas entry and / or gas exit for the intermediate space 35.
- the four side walls 41 are connected to the cylindrical sleeve 36 of the outer protective sleeve 31 by means of an annular flange 46, the annular flange 46 running at least approximately at right angles to the side walls 41 and the sleeve 36.
- Two inner gas openings 48 are introduced into the ring flange 46.
- the two inner gas openings 48 are arranged, for example, opposite one another and parallel to the wide side walls 41 of the inner protective sleeve 32.
- the double-band protective tube 30 with the outer protective sleeve 31 and the inner protective sleeve 32 is made in one piece. In terms of production technology, this is realized by a deep-drawing process, the inner protective sleeve 31 with the side walls 41 and the bottom 42 being formed first. Then the sleeve 36 of the outer protective sleeve 31 is carried out, the ring flange 46 and the gap 50 being formed at the same time. The cylindrical section 37 of the sleeve 36 is realized when the outer protective sleeve 31 is formed.
- the production of the gas openings 44 and 48 is expediently integrated into the deep-drawing process.
- the protective tube 30, which is formed in one piece and provided with the gas openings 39, 44, 48, is inserted with the cylindrical section 37 into the opening 15 of the housing section 11 and is welded by means of a circumferential weld seam 52, for example by means of laser welding.
- the exhaust gas flows in the direction indicated by an arrow in FIG. 1, the exhaust gas reaching the gap 35 through the gap 50.
- the exhaust gas penetrates into the measurement gas space 34 through the inner gas openings 48.
- the exhaust gas flows out of the measurement gas space 34 through the gas opening 44.
- the exhaust gas also flows through the gas opening 44 into the measuring gas space 34, the flow in the measuring gas space 34 and in the intermediate space 35 then being reversed.
- FIG. 4 Another embodiment of the protective tube 30 is shown in FIG. 4.
- the outer protective sleeve 31 is provided at the circumferential gap 50 with an edge 55 facing the inner protective sleeve 32.
- the edge 55 With the edge 55, the circumferential annular gap 50 is reduced and thus the gas opening 39 on the end face is narrowed.
- the narrowing of the front gas opening 39 offers even better protection against the ingress of condensed water carried in the exhaust gas.
- the inner protective sleeve 32 with any cross section, for example with a circular cross section or a square one Cross-section.
- the exhaust-side end of the sleeve 36 with an end face in which the end gas openings 39 are made.
Landscapes
- 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)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97931686A EP1038173A1 (de) | 1996-07-17 | 1997-06-19 | Gassensor |
KR1019980701875A KR20000064242A (ko) | 1996-07-17 | 1997-06-19 | 가스 센서 |
JP50644198A JP3983295B2 (ja) | 1996-07-17 | 1997-06-19 | ガスセンサ |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19628692 | 1996-07-17 | ||
DE19628692.1 | 1996-07-17 | ||
DE19705402A DE19705402B4 (de) | 1996-07-17 | 1997-02-13 | Gassensor |
DE19705402.1 | 1997-02-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998003861A1 true WO1998003861A1 (de) | 1998-01-29 |
Family
ID=26027577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1997/001366 WO1998003861A1 (de) | 1996-07-17 | 1997-06-19 | Gassensor |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1038173A1 (de) |
JP (1) | JP3983295B2 (de) |
KR (1) | KR20000064242A (de) |
CN (1) | CN1197512A (de) |
DE (1) | DE19705402B4 (de) |
WO (1) | WO1998003861A1 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7015208B2 (en) | 2001-08-31 | 2006-03-21 | Aventis Pharma Deutschland Gmbh | C2-substituted indan-1-ols and their derivatives, processes for their preparation and their use as pharmaceuticals |
JP2007525575A (ja) * | 2004-02-06 | 2007-09-06 | ナショナル スターチ アンド ケミカル インベストメント ホールディング コーポレーション | 低適用温度弾性接着剤 |
JP2007525574A (ja) * | 2004-02-06 | 2007-09-06 | ナショナル スターチ アンド ケミカル インベストメント ホールディング コーポレーション | アイオノマー含有ホットメルト接着剤 |
JP2016011882A (ja) * | 2014-06-30 | 2016-01-21 | 株式会社デンソー | ガスセンサ |
EP2313764B1 (de) * | 2008-08-06 | 2018-08-08 | Robert Bosch GmbH | Abgassensor |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3691242B2 (ja) | 1998-02-26 | 2005-09-07 | 日本特殊陶業株式会社 | ガスセンサ |
US7241370B2 (en) * | 2002-08-20 | 2007-07-10 | Ngk Spark Plug Co., Ltd. | Protective covers for gas sensor, gas sensor and gas sensor manufacturing method |
DE10324956B4 (de) | 2003-06-03 | 2008-03-13 | Robert Bosch Gmbh | Messfühler |
DE102004056417A1 (de) * | 2004-11-23 | 2006-05-24 | Robert Bosch Gmbh | Gasmessfühler |
DE102004063085A1 (de) * | 2004-12-28 | 2006-07-06 | Robert Bosch Gmbh | Gasmessfühler |
JP5000984B2 (ja) * | 2006-11-06 | 2012-08-15 | 日本特殊陶業株式会社 | ガスセンサ |
JP4955591B2 (ja) * | 2007-04-23 | 2012-06-20 | 日本特殊陶業株式会社 | ガスセンサ |
DE102007023158A1 (de) * | 2007-05-16 | 2008-11-20 | Robert Bosch Gmbh | Gassensor |
DE102008041038B4 (de) | 2008-08-06 | 2023-05-25 | Robert Bosch Gmbh | Gassensor |
CN101337264B (zh) * | 2008-08-13 | 2011-02-09 | 田志恒 | 连铸机结晶器振动在线检测装置 |
DE102011017772A1 (de) * | 2011-04-29 | 2012-10-31 | Robert Bosch Gmbh | Sensorvorrichtung zur Erfassung eines Parameters eines strömenden fluiden Mediums |
DE102011082260A1 (de) | 2011-09-07 | 2013-05-08 | Robert Bosch Gmbh | Messfühler zur Bestimmung mindestens einer Eigenschaft eines Messgases in einem Messgasraum |
DE102013015218A1 (de) * | 2013-09-13 | 2015-03-19 | Hella Kgaa Hueck & Co. | Gassensor und Kraftfahrzeug mit einem Gassensor |
CN104569305A (zh) * | 2014-12-22 | 2015-04-29 | 苏州工业园区传世汽车电子有限公司 | 气体传感器三重保护罩 |
CN105092788A (zh) * | 2015-08-05 | 2015-11-25 | 国网浙江省电力公司湖州供电公司 | 一种变电所用的可视化气体监测设备 |
DE102017206308A1 (de) * | 2017-04-12 | 2018-10-18 | Robert Bosch Gmbh | Abgassensor, insbesondere Partikelsensor |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4323440A (en) * | 1980-03-25 | 1982-04-06 | Toyota Jidosha Kogyo Kabushiki Kaisha | Oxygen sensor with protective shield and porous air filter |
US4597850A (en) * | 1984-04-02 | 1986-07-01 | Hitachi, Ltd. | Oxygen sensor |
US4683049A (en) * | 1985-01-26 | 1987-07-28 | Honda Giken Kogyo Kabushiki Kaisha | Oxygen sensor assembly |
EP0326399A2 (de) * | 1988-01-29 | 1989-08-02 | Ngk Insulators, Ltd. | Sauerstofffühler |
DE9014826U1 (de) * | 1990-10-26 | 1992-02-20 | Robert Bosch Gmbh, 7000 Stuttgart | Gasmeßfühler, insbesondere zur Bestimmung des Sauerstoffgehaltes in Abgasen von Brennkraftmaschinen |
-
1997
- 1997-02-13 DE DE19705402A patent/DE19705402B4/de not_active Expired - Fee Related
- 1997-06-19 KR KR1019980701875A patent/KR20000064242A/ko not_active Application Discontinuation
- 1997-06-19 JP JP50644198A patent/JP3983295B2/ja not_active Expired - Fee Related
- 1997-06-19 WO PCT/DE1997/001366 patent/WO1998003861A1/de not_active Application Discontinuation
- 1997-06-19 CN CN97190832A patent/CN1197512A/zh active Pending
- 1997-06-19 EP EP97931686A patent/EP1038173A1/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4323440A (en) * | 1980-03-25 | 1982-04-06 | Toyota Jidosha Kogyo Kabushiki Kaisha | Oxygen sensor with protective shield and porous air filter |
US4597850A (en) * | 1984-04-02 | 1986-07-01 | Hitachi, Ltd. | Oxygen sensor |
US4683049A (en) * | 1985-01-26 | 1987-07-28 | Honda Giken Kogyo Kabushiki Kaisha | Oxygen sensor assembly |
EP0326399A2 (de) * | 1988-01-29 | 1989-08-02 | Ngk Insulators, Ltd. | Sauerstofffühler |
DE9014826U1 (de) * | 1990-10-26 | 1992-02-20 | Robert Bosch Gmbh, 7000 Stuttgart | Gasmeßfühler, insbesondere zur Bestimmung des Sauerstoffgehaltes in Abgasen von Brennkraftmaschinen |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7015208B2 (en) | 2001-08-31 | 2006-03-21 | Aventis Pharma Deutschland Gmbh | C2-substituted indan-1-ols and their derivatives, processes for their preparation and their use as pharmaceuticals |
JP2007525575A (ja) * | 2004-02-06 | 2007-09-06 | ナショナル スターチ アンド ケミカル インベストメント ホールディング コーポレーション | 低適用温度弾性接着剤 |
JP2007525574A (ja) * | 2004-02-06 | 2007-09-06 | ナショナル スターチ アンド ケミカル インベストメント ホールディング コーポレーション | アイオノマー含有ホットメルト接着剤 |
JP4881164B2 (ja) * | 2004-02-06 | 2012-02-22 | ヘンケル アクチェンゲゼルシャフト ウント コンパニー コマンディトゲゼルシャフト アオフ アクチェン | 低適用温度弾性接着剤 |
EP2313764B1 (de) * | 2008-08-06 | 2018-08-08 | Robert Bosch GmbH | Abgassensor |
JP2016011882A (ja) * | 2014-06-30 | 2016-01-21 | 株式会社デンソー | ガスセンサ |
Also Published As
Publication number | Publication date |
---|---|
DE19705402B4 (de) | 2007-04-26 |
EP1038173A1 (de) | 2000-09-27 |
KR20000064242A (ko) | 2000-11-06 |
DE19705402A1 (de) | 1998-01-22 |
JP3983295B2 (ja) | 2007-09-26 |
JPH11513120A (ja) | 1999-11-09 |
CN1197512A (zh) | 1998-10-28 |
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