EP2132559A1 - Gassensor zur messung einer gaskomponente in einem gasgemisch - Google Patents
Gassensor zur messung einer gaskomponente in einem gasgemischInfo
- Publication number
- EP2132559A1 EP2132559A1 EP08708256A EP08708256A EP2132559A1 EP 2132559 A1 EP2132559 A1 EP 2132559A1 EP 08708256 A EP08708256 A EP 08708256A EP 08708256 A EP08708256 A EP 08708256A EP 2132559 A1 EP2132559 A1 EP 2132559A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrode
- gas
- gas sensor
- sensor according
- 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.)
- Granted
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 23
- 238000005259 measurement Methods 0.000 title abstract description 4
- 239000000919 ceramic Substances 0.000 claims abstract description 17
- 238000011144 upstream manufacturing Methods 0.000 claims abstract 2
- 239000007789 gas Substances 0.000 claims description 102
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 30
- 238000005086 pumping Methods 0.000 claims description 30
- 239000001301 oxygen Substances 0.000 claims description 25
- 229910052760 oxygen Inorganic materials 0.000 claims description 25
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 24
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 7
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052815 sulfur oxide Inorganic materials 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 3
- 229910021529 ammonia Inorganic materials 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 13
- 239000007784 solid electrolyte Substances 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000009792 diffusion process Methods 0.000 description 7
- 230000004888 barrier function Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000036961 partial effect Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- -1 for example Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910001020 Au alloy Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 239000011195 cermet Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- TXKMVPPZCYKFAC-UHFFFAOYSA-N disulfur monoxide Inorganic materials O=S=S TXKMVPPZCYKFAC-UHFFFAOYSA-N 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000003353 gold alloy Substances 0.000 description 1
- JUWSSMXCCAMYGX-UHFFFAOYSA-N gold platinum Chemical compound [Pt].[Au] JUWSSMXCCAMYGX-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000037427 ion transport Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/02—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents
- B65D1/0207—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features
- B65D1/0215—Bottles or similar containers with necks or like restricted apertures, designed for pouring contents characterised by material, e.g. composition, physical features multilayered
Definitions
- Gas sensor for measuring a gas component in a gas mixture
- the invention relates to a gas sensor for measuring a gas component in one
- gas sensors which enable the determination of gaseous pollutants in the ppm range independently of the temperature of the measuring gas, play a major role here.
- measuring gas entering the sensor is selectively freed from oxygen by means of two electrochemical pumping cells arranged one after the other in the flow direction of the measuring gas and thus the oxygen partial pressure is greatly reduced.
- the respective pumping electrodes have different potentials, so that the oxygen content of the measuring gas can be gradually reduced without the proportion of nitrogen oxides in the measuring gas being significantly changed.
- this sensor structure requires a large number of electrical connections for contacting pumping electrodes, measuring electrodes, heating elements, etc.
- a high number of connections leads to a high outlay with regard to the lead-out of the electrical supply lines from the sensor element during the electrical contacting and the lead-out of the cables from the sensor housing. This results in high material and manufacturing costs as well as an increased quality risk.
- the object of the present invention is to provide a gas sensor, which i.a. the determination of nitrogen oxides in combustion exhaust gases allows at the same time low number of required electrical contacts.
- the gas sensor comprises a sensor element, wherein two electrodes of the sensor element have a common electrical contact.
- the complex separate contacting of one of the two electrodes can be saved.
- at least one of the electrodes is preceded by an electrical resistance.
- both electrodes are formed as pumping electrodes for changing the oxygen concentration at or within the sensor element, as abut these relatively static, well-calculable in their height different pumping voltages.
- the electrical resistance is integrated in a ceramic layer plane of the sensor element, within which the first or the second electrode is formed.
- the contacting of the electrodes or the integration of the electrical resistance in the electrode lead at least one of the electrodes manufacturing technology done in a simple way.
- the electrical resistance can be positioned on a large area of the sensor element. This also represents a production-technically satisfactory solution.
- this electrode lead but before entering the sensor element of the gas sensor branches and the sensor element for the first electrode has a first electrode lead and for the second electrode has a second electrode lead.
- the electrical resistance is then assigned within the gas sensor at least one of the electrode leads and therefore does not need to be integrated into the sensor element manufacturing technology.
- the electrical resistance is made of a metal alloy. If suitable alloys of a platinum metal and / or coin metal are used, the electrical resistance shows only a low heat dependence of its ohmic resistance. In this way, temperature-stable potentials can be realized at the corresponding electrodes.
- FIG. 1 shows a schematic longitudinal section through the sensor element of a gas sensor according to a first exemplary embodiment
- FIG. 2 shows a cross section of the sensor element shown in FIG. 1 along the section line A - A and
- FIG. 3 shows a cross section of a sensor element according to a second embodiment along the section line A- A. - A -
- FIG. 1 shows a basic structure of a first embodiment of the present invention.
- Denoted by 10 is a planar sensor element of an electrochemical gas sensor, which has, for example, a plurality of oxygen ion-conducting solid electrolyte layers I Ia, I Ib, 11c, Hd and He.
- the solid electrolyte layers Ha, l lc and l Ie are carried out as ceramic films and form a planar ceramic body.
- the integrated shape of the planar ceramic body of the sensor element 10 is produced by laminating together the functional films printed with ceramic films and then sintering the laminated structure in a conventional manner.
- Each of the solid electrolyte layers 1 Ia-I Ie is made of oxygen ion-conducting solid electrolyte material, such as partially or fully stabilized ZrÜ 2 with Y 2 O 3 .
- the solid electrolyte layers 11a-1e may alternatively be replaced by films of alumina at locations where ionic conduction in the solid electrolyte is not important or even undesirable.
- the sensor element 10 preferably includes in the layer plane of the ceramic layer 1 Ib a measuring gas space 13, which is in contact with a gas mixture surrounding the gas sensor via a gas inlet opening 15. Between the gas inlet opening
- a diffusion barrier 19, for example of porous ceramic material is provided in the diffusion direction of the sample gas, whereby the gas inlet is limited in the sample gas space 13 due to the porous structure of the diffusion barrier 19.
- a reference gas channel 30 which contains a reference gas atmosphere.
- the reference gas atmosphere may be, for example, air.
- the reference gas channel 30 has an opening (not shown) on a side of the sensor element facing away from the measurement gas, which ensures gas exchange with the ambient air.
- a resistance heating element serves to heat the sensor element 10 to the necessary operating temperature.
- a first inner electrode 20 and a second inner electrode 24 are provided in the diffusion direction of the measuring gas. These are preferably made of a platinum-gold alloy.
- the gas mixture immediately facing side of the solid electrolyte layer 1 Ia is an outer
- Electrode 22 which may be covered with a porous protective layer, not shown.
- the electrodes 20, 22 and 24, 22 form a first and a second electrochemical pumping cell.
- the operation as a pumping cell comprises the application of a voltage between the electrodes 20, 22 or 24, 22 of the pumping cells, resulting in an ion transport between the electrodes 20, 22 and 24, 22 through the solid electrolyte I Ia results.
- the number of "pumped" ions is directly proportional to a pumping current flowing between the electrodes 20, 22 and 24, 22, respectively.
- the present gas mixture has only a small proportion of oxygen
- it is also possible to dispense with the first inner electrode 20 and thus with the first electrochemical pumping cell 20, 22. This is the case, for example, with exhaust gases of motor vehicles, which are operated constantly with a lambda value 1.
- the sensor structure simplifies thereby.
- the first pumping cell 20, 22 and the second pumping cell 24, 22 are used selectively to regulate the oxygen content of the gas mixture diffusing into the measuring gas space 13.
- a constant oxygen partial pressure of, for example, 0.1 to 1000 ppm is set in the measuring gas chamber 13. In this case, decomposition of nitrogen oxides or sulfur oxides should be avoided as much as possible despite similar electrochemical behavior.
- the inner electrodes 20, 24 have different electrical potentials.
- the first inner electrode 20 has an inferior cathodic potential while the second inner electrode 24 has a higher cathodic potential. In this meadow is guaranteed that in the area of the first inner electrode 20
- Electrode 20 a large part of the oxygen contained in the gas mixture is removed, wherein the proportion of removed nitrogen oxides due to the relatively low electrical potential of the first inner electrode 20 can be minimized.
- the first inner electrode 20 in the flow direction of the gas mixture downstream electrode 24 is still reduced in the gas mixture remaining oxygen due to the applied there higher cathodic potential, whereby there is a change in the concentration of nitrogen or sulfur oxides avoided in the gas mixture.
- a potential difference is provided, which can be adjusted depending on the remaining oxygen content in the gas mixture. For example, at a high partial pressure of oxygen in the gas mixture, a comparatively high potential difference between the first and second pumping electrodes 20, 24 may be required.
- the sensor element 10 comprises a further measuring gas space 17, which is separated from the first measuring gas space 13 by a further diffusion barrier 18, preferably in the same layer plane as the measuring gas space 13.
- a further inner electrode 26 is provided, which forms together with the outer electrode 22 or alternatively with the reference electrode 28, a further electrochemical pumping cell 22, 26 and 28, 26.
- the further inner electrode 26 is preferably formed of a catalytically active material such as, for example, platinum or an alloy of a plurality of platinum metals.
- the electrode material for all electrodes in a conventional manner is designed as a cermet to sinter with the ceramic films of the sensor element.
- the nitrogen that also forms in this process diffuses out of the sensor element.
- the pumping current at the third pumping cell formed from further inner electrode 26 and outer electrode 22 or reference electrode 28 is used to determine the concentration of nitrogen oxides and / or sulfur oxides, since it behaves proportional to the nitrogen oxide concentration or sulfur oxide concentration in the gas mixture.
- the oxygen pumping current of the first or second pumping cell 20, 22 or 24, 22 can be used to determine the oxygen content in the gas mixture in a comparable manner.
- the control of the oxygen partial pressure in the sample gas space 13 is preferably carried out with the aid of an additional concentration cell provided in the sensor element.
- the reference electrode 28 is preferably connected together with the second inner electrode 24 as an electrochemical Nernst or concentration cell.
- Nernst- or concentration cell is generally understood a two-electrode arrangement in which both electrodes 24, 28 are exposed to different gas concentrations and a difference of the voltage applied to the electrodes 24, 28 potentials is measured. According to the Nernst equation, this potential difference allows a conclusion to be drawn about the oxygen concentrations present at the electrodes 24, 28.
- the pumping voltage at the first and / or second pumping cell 20, 22 or 24, 22 is varied so that a constant potential difference is established between the electrodes 20, 28 of the concentration cell.
- the adjustment of the pumping potential applied to the first and second inner electrodes 20, 24 can be effected by determining the Nernst potential difference between the second inner electrode 24 and the reference electrode 28.
- a further alternative is to provide for the determination of the oxygen concentration in the first measuring gas chamber 13, a separate additional, designed as Nernstelektrode inner electrode, which is preferably positioned in the region of the second diffusion barrier 18 and the reference electrode 28 is an electrochemical
- the additional inner electrode embodied as a Nernst electrode can also be arranged in the second measuring gas chamber 17, for example, in the flow direction in front of the further inner electrode 26.
- the first inner electrode 20 and the second inner electrode 24 are contacted via a common electrode feed line 32. Nevertheless, at the inner electrodes 20, 24th To be able to achieve different potentials, the electrode lead 32 in its the first connecting to the second inner electrode region an electrical resistance R k , which is shown schematically in Figure 1. In this way, part of the voltage applied to the electrode feed line 32 drops across the resistor R k , so that the second inner electrode 24 shows the applied potential, but the first inner electrode 20 has a different, compared to the second inner electrode 24 applied comparatively low Potential.
- the potential to be applied is set via a corresponding sensor evaluation circuit 34, shown only schematically in FIG. 1, which has voltage sources 34a, 34b and signal detections for current intensity I and voltage U Nem .
- a first form of electrical contacting of first and second inner electrodes 20, 24 is shown in FIG.
- the electrode feed line 32 for example, a branch in the region of the second inner electrode 24, wherein by means of a first branch of the branch, the second inner electrode 24 is contacted and a second branch of the branch has the electrical resistance R k and the first inner electrode 20th contacted.
- the electrical resistance R k is preferably carried out in thick film technology and integrated into the ceramic material of the solid electrolyte layer 1 Ib. It comprises a resistance conductor track 36 and preferably a ceramic insulation 38, for example of aluminum oxide, to avoid shunts.
- the electrical resistance R k embodied as a thick-film resistor comprises, for example, a binary or ternary metal alloy as a resistance conductor track 36. Preference is given to alloys of noble metals of the platinum metal group, such as Ru, Rh, Pd, Ir or Pt, and the coinage metal group, such as Au or Ag.
- the material of the resistance trace 36 further contains ceramic components in an amount greater than 2% by volume.
- the ohmic resistance of the resulting electrical resistance R k is in the range of 2 to 300 ⁇ at the operating temperature of the sensor element, preferably in the range 10 to 200 ⁇ .
- the operating temperature of the sensor element is in the range of 650 0 C to 950 0 C.
- the present embodiment is not limited to the integration of an electrical
- Resistance R k in the also the inner electrodes 20, 24, 26 containing ceramic layer plane I Ib limited. Rather, a corresponding electrical resistance R k can be arranged at an arbitrary position within the sensor element 10, for example also in one of the sample gas chambers 13, 17 or on one of the outer surfaces of the sensor element 10. Furthermore, alternatively, the electrical resistance R k may be provided within a housing of the gas sensor, but outside of the sensor element. Although the gas sensor has a common contact for the first and second inner electrodes 20, 24, the corresponding electrode lead branches within the housing of the gas sensor outside the sensor element 10, so that the sensor element 10 in this case for each inner electrode 20, 24th a separate electrode lead, of which at least one comprises a resistor R k .
- R k is preferably made of a material having a low thermal coefficient of resistance.
- the resistor from a PTC or NTC material. This would have the advantage that when engaging in a temperature control or regulation of the sensor element, for example.
- the resistor R k when using a PTC or NTC resistor, a desired higher or lower potential difference between first and second inner electrode 20, 24 would allow, since a change in the sensor temperature would be accompanied by a corresponding change in the electrical resistance of the resistor R k .
- FIG. 1 Another alternative embodiment of the described sensor element of the gas sensor is shown in FIG.
- the second inner electrode 24 is arranged in the second measuring gas chamber 17 instead of in the first measuring gas chamber 13. This has the advantage that the regulation of the oxygen pumping current takes place in accordance with the oxygen partial pressure present in the measurement gas to which the further inner electrode 26 is also exposed.
- the invention is not limited to a common contacting of the first and second inner electrodes 20, 24.
- the further inner electrode 26 can be connected to the the first and / or the second inner electrode 20, 24 are contacted together by integrating a plurality of electrical resistors R k through a common electrode feed line, so that all electrodes of the sensor element which come into contact with the gas mixture have a common contact.
- R k electrical resistance
- gas components of the gas mixture can be determined erometrically either by electrochemical reduction or oxidation with a suitable choice of the pumping voltage applied to the third pumping cell 26, 22.
- reducible gas components can be determined, in the second case oxidizable, such as, for example, ammonia, hydrocarbons or hydrogen. Since the pump voltage applied to the electrodes 26, 22 can also be varied in the short term, it is also possible to determine one or more reducing or oxidizing gas components with a gas sensor alternately one after the other periodically or in short time intervals.
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007011049A DE102007011049A1 (de) | 2007-03-07 | 2007-03-07 | Gassensor zur Messung einer Gaskomponente in einem Gasgemisch |
PCT/EP2008/050933 WO2008107229A1 (de) | 2007-03-07 | 2008-01-28 | Gassensor zur messung einer gaskomponente in einem gasgemisch |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2132559A1 true EP2132559A1 (de) | 2009-12-16 |
EP2132559B1 EP2132559B1 (de) | 2014-12-24 |
Family
ID=39677875
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08708256.6A Not-in-force EP2132559B1 (de) | 2007-03-07 | 2008-01-28 | Gassensor zur messung einer gaskomponente in einem gasgemisch |
Country Status (4)
Country | Link |
---|---|
US (1) | US8343322B2 (de) |
EP (1) | EP2132559B1 (de) |
DE (1) | DE102007011049A1 (de) |
WO (1) | WO2008107229A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES2614154T3 (es) * | 2008-07-10 | 2017-05-29 | Robert Bosch Gmbh | Elemento sensor y procedimiento para determinar componentes gaseosos en mezclas gaseosas y su utilización |
DE102011007447A1 (de) * | 2011-04-15 | 2012-10-18 | Robert Bosch Gmbh | Verfahren zum Betrieb mindestens eines Sensorelements |
KR102212850B1 (ko) * | 2014-03-25 | 2021-02-05 | 엘지이노텍 주식회사 | 가스 센서 패키지 |
CN104458865B (zh) * | 2013-09-16 | 2018-11-16 | Lg伊诺特有限公司 | 气体传感器组件 |
US9851336B2 (en) * | 2013-09-16 | 2017-12-26 | Lg Innotek Co., Ltd. | Gas sensor package |
EP2857349B1 (de) * | 2013-10-01 | 2020-08-05 | LG Innotek Co., Ltd. | Gassensorpaket |
KR102212845B1 (ko) * | 2014-03-25 | 2021-02-05 | 엘지이노텍 주식회사 | 가스 센서 패키지 |
CN104407034A (zh) * | 2014-11-14 | 2015-03-11 | 无锡信大气象传感网科技有限公司 | 一种气体传感器芯片 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3494508B2 (ja) * | 1995-06-26 | 2004-02-09 | 日本碍子株式会社 | 可燃性ガスセンサ、可燃性ガス濃度の測定方法及び触媒劣化検知方法 |
JPH09318594A (ja) * | 1996-03-25 | 1997-12-12 | Ngk Insulators Ltd | ガスセンサおよび被測定ガス中の特定成分量の測定方法 |
US6344134B1 (en) | 1998-01-16 | 2002-02-05 | Ngk Spark Plug Co., Ltd. | Method for measuring NOx concentration and NOx concentration sensor |
DE19840888A1 (de) | 1998-09-09 | 2000-03-16 | Bosch Gmbh Robert | Meßfühler zum Bestimmen einer Sauerstoffkonzentration in einem Gasgemisch |
JP4005273B2 (ja) | 1998-09-16 | 2007-11-07 | 株式会社デンソー | ガス濃度検出装置 |
DE10100599B4 (de) | 2001-01-09 | 2007-02-08 | Robert Bosch Gmbh | Gassensor |
DE10149739A1 (de) | 2001-10-09 | 2003-04-10 | Bosch Gmbh Robert | Sensorelement eines Gassensors |
DE10392160T5 (de) | 2002-03-29 | 2004-10-14 | NGK Spark Plug Co., Ltd., Nagoya | NOx-Konzentrationsmessvorrichtung und Vorrichtung zur Selbstdiagnose eines NOx-Sensors sowie Selbstdiagnoseverfahren dafür |
-
2007
- 2007-03-07 DE DE102007011049A patent/DE102007011049A1/de not_active Withdrawn
-
2008
- 2008-01-28 EP EP08708256.6A patent/EP2132559B1/de not_active Not-in-force
- 2008-01-28 WO PCT/EP2008/050933 patent/WO2008107229A1/de active Application Filing
- 2008-01-28 US US12/529,870 patent/US8343322B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2008107229A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102007011049A1 (de) | 2008-09-11 |
WO2008107229A1 (de) | 2008-09-12 |
US20100230297A1 (en) | 2010-09-16 |
US8343322B2 (en) | 2013-01-01 |
EP2132559B1 (de) | 2014-12-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2132559B1 (de) | Gassensor zur messung einer gaskomponente in einem gasgemisch | |
EP1166096B1 (de) | Elektrochemischer gassensor | |
DE4311849C2 (de) | Sensor zur Bestimmung von Gaskomponenten und/oder Gaskonzentrationen von Gasgemischen | |
DE69629640T2 (de) | NOx-Sensor und Messverfahren dazu | |
DE4333232B4 (de) | Meßfühler zur Bestimmung des Sauerstoffgehaltes von Gasgemischen | |
DE19938416A1 (de) | Mehrlagiges Luft-Kraftstoff-Verhältnis-Fühlerelement | |
DE69936553T2 (de) | Verfahren zur Konzentrationsmessung von NOx | |
EP1127269A1 (de) | Sensorelement zur bestimmung der sauerstoffkonzentration in gasgemischen und verfahren zur herstellung desselben | |
DE2917160A1 (de) | Verfahren zum feststellen eines luft-brennstoff-verhaeltnisses in verbrennungseinrichtungen durch messung des sauerstoffgehalts im abgas | |
DE4445033A1 (de) | Verfahren zur Messung der Konzentration eines Gases in einem Gasgemisch sowie elektrochemischer Sensor zur Bestimmung der Gaskonzentration | |
DE112016001058T5 (de) | Gassensorelement und Gassensor | |
EP1110079B1 (de) | Elektrochemischer gassensor und verfahren zur bestimmung von gaskomponenten | |
DE19960338A1 (de) | Gassensor zur Bestimmung der Konzentration von Gaskomponenten in Gasgemischen und dessen Verwendung | |
DE10058014C2 (de) | Sensorelement eines Gassensors | |
EP1155311A1 (de) | Elektrochemischer messfühler | |
DE102017130692A1 (de) | Gassensorelement und Gassensoreinheit | |
DE10352062B4 (de) | Gassensorelement mit gewährleisteter Messgenauigkeit und Verfahren zu dessen Herstellung | |
DE102019004191A1 (de) | Gassensor und verfahren zur herstellung eines gassensors | |
DE10240918A1 (de) | Gassensor und Verfahren zum Ermitteln einer Gaskonzentration | |
DE102007052754A1 (de) | Gassensor und Verfahren zur Detektion von Teilchen in einem Gasstrom | |
DE10232355B4 (de) | Elektrochemischer Messfühler zur Messung der Konzentration von Stickoxiden | |
DE19937016A1 (de) | Sensorelement und Verfahren zur Bestimmung der Sauerstoffkonzentration in Gasgemischen | |
WO2002014660A2 (de) | Gassensor, insbesondere lambda-sonde | |
EP1273910A2 (de) | Sensorelement mit leitfähiger Abschirmung | |
DE10200052A1 (de) | Sensorelement |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20091007 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
|
17Q | First examination report despatched |
Effective date: 20100127 |
|
DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
INTG | Intention to grant announced |
Effective date: 20140912 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 703402 Country of ref document: AT Kind code of ref document: T Effective date: 20150115 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502008012534 Country of ref document: DE Effective date: 20150219 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: VDEP Effective date: 20141224 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141224 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150324 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141224 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141224 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150325 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141224 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141224 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141224 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141224 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141224 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141224 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141224 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141224 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141224 Ref country code: LU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150128 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150424 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502008012534 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141224 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150131 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150131 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141224 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
26N | No opposition filed |
Effective date: 20150925 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 9 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150128 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141224 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 703402 Country of ref document: AT Kind code of ref document: T Effective date: 20150128 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150128 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141224 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 10 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20080128 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141224 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141224 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150131 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150424 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141224 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20180125 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20180126 Year of fee payment: 11 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20190128 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190128 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190128 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R084 Ref document number: 502008012534 Country of ref document: DE |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20220324 Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20220120 Year of fee payment: 15 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502008012534 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230801 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230131 |