CN1796991B - Gas measuring transducer - Google Patents
Gas measuring transducer Download PDFInfo
- Publication number
- CN1796991B CN1796991B CN 200510135771 CN200510135771A CN1796991B CN 1796991 B CN1796991 B CN 1796991B CN 200510135771 CN200510135771 CN 200510135771 CN 200510135771 A CN200510135771 A CN 200510135771A CN 1796991 B CN1796991 B CN 1796991B
- Authority
- CN
- China
- Prior art keywords
- sensing element
- housing
- measuring transducer
- annular flange
- gas measuring
- 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
- 238000007789 sealing Methods 0.000 claims description 21
- 238000005245 sintering Methods 0.000 claims description 15
- 239000000919 ceramic Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 9
- 238000001125 extrusion Methods 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 5
- 229910052623 talc Inorganic materials 0.000 claims description 5
- 235000012222 talc Nutrition 0.000 claims description 5
- 239000000454 talc Substances 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 239000008246 gaseous mixture Substances 0.000 claims description 4
- 206010000060 Abdominal distension Diseases 0.000 claims description 3
- 208000024330 bloating Diseases 0.000 claims description 3
- 239000007767 bonding agent Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 abstract 2
- 239000000523 sample Substances 0.000 abstract 2
- 230000000704 physical effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 35
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- 206010070834 Sensitisation Diseases 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000008313 sensitization Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
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
- G01N27/4078—Means for sealing the sensor element in a housing
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)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
A gas probe for determining physical property of gas, particularly temperature or gas mixture thereof, such as the concentration of gas composition of engine exhaust gas is provided, which comprises a tubular housing and a sensing element 11, the end section 111 of a gas side and the end section 112 of a connecting side thereof protrude from the housing and the sensing element is sealed between end sections 111, 112 relative to the housing. In order to expose the end section 112 relative to the end section 111 of the gas, simply and reliably seal and reduce the axial structural height of the whole probe, a ring flange 13 is supported by the sensing element, arranged in the area between end sections 111, 112 and connected with the in airtight sensing element. An annular radial shoulder 123is constructed in the housing, the ring flange is axially clamped on the radial shoulder by a seal ring 14 mounted between the radial shoulder and the ring flange.
Description
Technical field
The present invention relates to the gas measuring transducer of concentration of gas componant of the exhaust of a kind of physical characteristics, especially its temperature that is used for determining tested gas or a kind of gaseous mixture such as internal combustion engine.
Background technology
In known gas measuring transducer (DE 195 32 090 A1), the end section of the maintenance of the machinery of sensing element in housing and the connection side of this sensing element realizes by two ceramic die products and a seal assembly that is arranged between them with respect to the airtight sealing of the end section of tested gas side, they be enclosed in sensing element on the section of a centre between these two end section and rest on the inner walls.Seal assembly is made up of three sealing pads, and wherein the sealing pad of two outsides is made of talcum and middle sealing pad is made of boron nitride.Talcum sealing pad is positioned at down on the ceramic die product, the latter itself be supported on one be configured on the housing around oblique shoulder on.Putting the ceramic die product at the last talcum sealing pad seat of honour, the latter is at its maintenance cover overlap joint by a metal on the end face of sealing dish.This keeps covering by axial pressure sleeve on housing, and wherein said seal assembly is compacted.Then, this maintenance covers in the zone of grooving of case side and is bloated shaping.By compressing of sealing assembly, these three sealing pads are extruded in the axial direction, and thus, they are pressed on the sensing element on the one hand, are pressed on the inner walls on the other hand.
Summary of the invention
Therefore, task of the present invention is, the gas measuring transducer of concentration of gas componant of the exhaust of a kind of physical characteristics, especially its temperature that is used for determining tested gas or a kind of gaseous mixture such as internal combustion engine is provided, and it has overcome shortcoming of the prior art.
According to the present invention, a kind of gas measuring transducer has been proposed, be used for determining the physical characteristics of tested gas, especially the concentration of the gas componant in its temperature or a kind of gaseous mixture, this gas measuring transducer has a housing and one and is maintained at sensing element in this housing from its inner walls with having spacing, this sensing element stretches out from housing and inner walls sealing relatively between these end section with the end section of a tested gas side and with an end section that connects side, wherein: this sensing element has an annular flange, this annular flange is set in the zone between these end section and with this sensing element air seal ground is connected, and this annular flange by through one insert one radially the O-ring seal axial restraint between shoulder and the annular flange be clamped on this radially shoulder that is configured in the annular on the inner walls.
Gas measuring transducer according to the present invention has its advantage, promptly by the radially shoulder in annular flange on the sensing element and the housing, reach axial sealing between sensing element and the housing with inserting at this annular flange and this O-ring seal between radially takeing on with interrelating, this is axial be sealed on its sealing function than the sealing no problem radially between the inwall of the seal member of an encirclement sensing element and housing many.Can cancel on known gas measuring transducer seal assembly of forming by a plurality of sealing pads that always has for good sealing radially and the disrance sleeve that pushes these sealing pads.Simplified manufacture process thus on the one hand, because it is comparable much smaller by punch and the snap-in force that cooperates mould to be applied on the seal assembly to be applied to snap-in force on the sealing circle, the latter is essential for the extruding that is arranged on the seal assembly between the described disrance sleeve.The snap-in force that acts on the O-ring seal also can simply bloat shaped structure or rolling structure and comes the producing and keep on the side of sealing circle of annular flange by introducing in housing, especially when the sealing circle by the metal manufacturing and when having the thermal expansivity identical with housing.On the other hand, by cancelling the axial arrangement height that known seal assembly can reduce gas measuring transducer significantly.In addition, assembling during this survey sensor this annular flange bear the centering function and when survey sensor is worked, bear the support function of relative housing, avoided the proper vibration of sensing element thus.
According to a favourable form of implementation of the present invention, sensing element and annular flange constitute an assembly unit, and wherein this annular flange is made up of stupalith and is sintered on this sensing element.Here this annular flange can be enclosed within on the sensing element that is in the hygrometric state and in burning process altogether with the sensing element sintering.A kind ofly insert airtight being connected between the sensing element and annular flange when sensing element is responsible for sintering with the film adhesive between the annular flange.Conversion ground, annular flange is enclosed within on the sensing element of sintering and by film adhesive bonding and in the burning process of back sintering at this on the sensing element of sintering.The layer of preferably also be provided with a layer in both cases between sensing element and annular flange, for example being done by glass powder, it reduces the mechanical stress that forms between sensing element and annular flange in sintering process.
According to another form of implementation of the present invention, the annular flange that also is sintered is fixed on the sensing element of sintering by ceramic mould material or ceramic bonding agent.
According to the form of implementation of a selection of the present invention, at least on the side of carrying radially shoulder of annular flange, preferably on the both sides at this annular flange by being equipped with seal member, the latter is by preferably being pressed on the annular flange by the disrance sleeve of pottery work.In the case, this snap-in force bloats shaped structure or next the producing at described disrance sleeve of rolling structure by introducing on the side of seal member in housing.By the measure of this selection, except an additional sealing function, especially reached the longitudinal bracing of sensing element on housing and reached the improvement that reaches thus for the vibration damping of sensing element.
Advantageously, annular flange clamps by introducing in housing at the axial restraint on the O-ring seal and bloats shaped structure or rolling structure is realized.
Advantageously, the radially shoulder on the housing is constructed in this wise, makes this radially take on the end section towards the tested gas side of sensing element.
Advantageously, housing is configured to have diameter hollow cylinder bigger and the housing section that diameter is less; On the transition portion of these housing sections, constructed described radially shoulder.
Advantageously, the protection tube with the end section of the tested gas side of a radial spacing encirclement sensing element is enclosed on the bigger housing section of diameter and by bloating shaping, roll extrusion or welding and is fixed on the housing.
Can realize further configuration and improvement by technique scheme according to gas measuring transducer of the present invention.
Description of drawings
Below describe the present invention in detail by an embodiment shown in the accompanying drawings.Accompanying drawing is schematically represented:
Fig. 1 partly illustrates a longitudinal section with gas measuring transducer of sensor unit,
Fig. 2 partly illustrates a skeleton view of sensing element among Fig. 1.
Embodiment
Partly be designed to determine the exhaust gas oxygensensor (Lambdasonde) of the oxygen concentration in the exhaust of internal combustion engine among Fig. 1 with the gas measuring transducer shown in the longitudinal cross-section view.It has a plane sensing element 11, this sensing element have one be exposed in the tested gas, to end section 111 and an end section 112 that connects side of gas sensitization, tested gas side, the end section of this connection side is used to make sensing element 11 to be electrically connected to an electrical connecting wire.On the end section 112 that connects side, be provided with some surface of contact in known manner, these surface of contact are connected by the electrode that some printed conductors (Leiterbahn) and some are arranged on the end section 111 of tested gas side on the one hand, connect plug connector by one on the other hand and are connected with the bonding conductor that is connected lead.Sensing element 11 shrinking away from theshell body inwalls 124 are maintained in the housing 12 tubulose or hollow cylinder and with two end section 111 and 112 with having spacing and stretch out on the end face of housing 12.Housing 12 is configured ladder and has a upper shell section 121 and the lower house section 122 that diameter is bigger that diameter is less on diameter, wherein form the radially shoulder 123 of an annular in the transitional region of these two housing sections 121,122 by the skew given here of inner walls 124, this radially takes on the end section 111 towards the tested gas side of sensing element 11.Usually in the zone between the end section 111 of tested gas side and the end section 112 that is connected side, carry an annular flange 13 at it by ceramic layer, the plane sensing element 11 preferably formed by film, this annular flange to air seal be fixed on the sensing element 11.Annular flange 13 is made of stupalith and is sintered on sensing element 11, makes this sensing element and this annular flange 13 constitute an assembly unit.For this reason, annular flange 13 is placed on the sensing element 11 that is in the hygrometric state and burns sintering in (Cofiring) process with this sensing element altogether so-called.Conversion ground, this annular flange 13 also can be enclosed within and burn in (Postfiring) process sintering on the sensing element 11 of sintering and in so-called back on this sensing element 11.In both cases, insert a kind of film adhesive between annular flange 13 and sensing element 11, this film adhesive forms airtight being connected between annular flange 13 and sensing element 11 in sintering process.For the mechanical stress that reduces on the interface between annular flange 13 and the sensing element 11, may occur when the sintering, also can between annular flange 13 and sensing element 11, be provided with one reduce the layer of stress, for example by glass powder forms layer.
Also can the annular flange 13 that be sintered be fixed on the sensing element 11 that also is sintered as another flexible program by a kind of ceramic mould material (keramischeVergussmasse) or a kind of ceramic bonding agent.
Annular flange 13 is by sizing in this wise, makes this annular flange accurately to be inserted in the bigger housing section 122 of diameter ordinatedly basically and can rest on the flat radially shoulder 123 in the housing 12.Insert an O-ring seal 14 at annular flange 13 and between radially takeing on 123, the latter is a becket preferably.On the back side of carrying O-ring seal 14 of annular flange 13, in housing 12, introduce in this wise one preferably around, hook this annular flange 13 bloat shaped structure 23, make this annular flange 13 axially be crushed on the O-ring seal 14 with a definite snap-in force.Also can carry out roll extrusion replaces this and bloats shaping.Here during bloating shaping (Verstemmen) or roll extrusion, for example an axial force that makes annular flange 13 be pressed on O-ring seal 14 and radially take on 123 is applied on the annular flange 13 by an extruding punch that imports in the bigger housing section 122 of diameter.
Put a protection tube 15 on the bigger housing section 122 of the diameter of housing 12, this protection tube surrounds the end section 111 of the tested gas side of sensing element 11 with a radial spacing.In this protection tube 15, can offer some gas feed-through holes that are used for tested gas or exhaust 16.In the case, the end face of protection tube 15 also can---have some other gas feed-through holes in case of necessity---in an end by a pipe and seals at the bottom of this pipe.Protection tube 15 also is by roll extrusion or bloats to be shaped and be fixed on the housing 12, but also can weld mutually with housing 2.
Two seal members 17,18 selectively also can be set in housing 12, each in these two seal members rest on respectively annular flange 13 each other back to end face in one on.On each seal member 17,18, be equipped with a disrance sleeve 19 or 20 of doing by stupalith.Apply an axial pressure on these disrance sleeves 19,20, this pressure makes seal member 17,18 be pressed on the annular flange 13 and is pressed on the inner walls 124.In order to keep this pressure, disrance sleeve 19,20 in housing 12, respectively introduce on the side of seal member 17,18 one hook disrance sleeve 19,20 bloat shaped structure (Ver-stemmung) 21 or 22.Also can carry out roll extrusion respectively and replace the described shaped structure 21,22 that bloats.
As ground further is not shown here; usually the end regions 112 of the connection side of stretching out from housing 12 of sensing element 11 and connection plug connector mounted thereto are surrounded by the protective casing on the less housing section 121 of diameter that is enclosed within housing 12, and this protective casing is being used to connect the cable sleeve of lead as terminal with one on the end face of housing 12.
The present invention can use in some gas measuring transducers like this with same favourable mode: these gas measuring transducers for example come the concentration of the oxides of nitrogen in the exhaust of detection of engine or internal combustion engine or are constructed to temperature sensor to be used to detect delivery temperature as NOx sensor.
Claims (18)
1. gas measuring transducer, be used for determining the physical characteristics of tested gas, have a housing (12) and one be maintained at sensing element (11) in this housing (12) with having spacing from its inner walls (124), this sensing element stretches out from housing (12) and in these end section (111 with the end section (111) of a tested gas side and with an end section (112) that connects side, 112) inner walls (124) sealing relatively between, it is characterized in that: this sensing element (11) has an annular flange (13), this annular flange is set in the zone between these end section (111,112) and with this sensing element (11) air seal ground is connected; This annular flange (13) is inserted at O-ring seal (a 14) axial restraint of radially takeing between (123) and the annular flange (13) through one to be clamped on this radially shoulder (123) that is configured in the annular on the inner walls (124).
2. according to the gas measuring transducer of claim 1, it is characterized in that: sensing element (11) constitutes an assembly unit with annular flange (13).
3. according to the gas measuring transducer of claim 2, it is characterized in that: annular flange (13) is made up of stupalith and is sintered on this sensing element (11).
4. according to the gas measuring transducer of claim 3, it is characterized in that: sintering is to carry out in sensing element (11) and the common burning process by film adhesive annular flange placed on it (13) in being in hygrometric state.
5. according to the gas measuring transducer of claim 3, it is characterized in that: sintering is to carry out in the back burning process on the sensing element of sintering (11).
6. according to the gas measuring transducer in the claim 3～5 one, it is characterized in that: between sensing element (11) and annular flange (13), be provided with a layer that reduces stress.
7. according to the gas measuring transducer of claim 2, it is characterized in that: annular flange (13) is made up of stupalith and is bonded on the sensing element (11).
8. according to the gas measuring transducer in the claim 1～5 one, it is characterized in that: annular flange (13) clamps by introducing in housing (12) at the axial restraint on the O-ring seal (14) and bloats shaped structure or rolling structure is realized.
9. according to the gas measuring transducer in the claim 1～5 one, it is characterized in that: the radially shoulder (123) on the housing (12) is constructed in this wise, makes this radially take on the end section (111) towards the tested gas side of sensing element (11).
10. according to the gas measuring transducer in the claim 1～5 one, it is characterized in that: housing (12) is configured to have diameter hollow cylinder bigger and the housing section (122,121) that diameter is less; On the transition portion of these housing sections (122,121), constructed described radially shoulder (123).
11. the gas measuring transducer according in the claim 1～5 one is characterized in that: on a side of carrying shoulder (123) radially of radial flange (13), go up by being equipped with seal member (17,18) at least at annular flange (13); Go up by being equipped with disrance sleeve (19,20) at seal member (17,18), described disrance sleeve bloats shaped structure (21,22) or rolling structure by introducing in housing (12) and axially is pressed on the described seal member (17,18).
12. the gas measuring transducer according to claim 10 is characterized in that: the protection tube (15) with the end section (111) of the tested gas side of a radial spacing encirclement sensing element (11) is enclosed in the bigger housing section (122) of diameter and goes up and be fixed on the housing (12) by bloating shaping, roll extrusion or welding.
13. the gas measuring transducer according to claim 1 is characterized in that: the physical characteristics of described tested gas is the temperature of this tested gas or the concentration of the gas componant in a kind of gaseous mixture.
14. the gas measuring transducer according to claim 6 is characterized in that: the described layer that reduces stress is the layer of being done by glass powder.
15. the gas measuring transducer according to claim 7 is characterized in that: described annular flange (13) is bonded on the sensing element (11) by ceramic mould material or ceramic bonding agent.
16. the gas measuring transducer according in the claim 1～5 one is characterized in that: on the both sides of annular flange (13), go up by being equipped with seal member at annular flange (13); Go up by being equipped with disrance sleeve (19,20) at seal member (17,18), described disrance sleeve bloats shaped structure (21,22) or rolling structure by introducing in housing (12) and axially is pressed on the described seal member (17,18).
17. the gas measuring transducer according to claim 11 is characterized in that: described seal member is made by talcum, and described disrance sleeve is made by pottery.
18. the gas measuring transducer according to claim 16 is characterized in that: described seal member is made by talcum, and described disrance sleeve is made by pottery.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200410063085 DE102004063085A1 (en) | 2004-12-28 | 2004-12-28 | Gas probe for determining physical property, e.g. nitrogen oxide or oxygen concentration or temperature of engine exhaust gas, has ring flange between protruding ends, clamped to shoulder in housing by sealing ring |
| DE102004063085.2 | 2004-12-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1796991A CN1796991A (en) | 2006-07-05 |
| CN1796991B true CN1796991B (en) | 2010-12-01 |
Family
ID=36590584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510135771 Expired - Fee Related CN1796991B (en) | 2004-12-28 | 2005-12-28 | Gas measuring transducer |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1796991B (en) |
| DE (1) | DE102004063085A1 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8147667B2 (en) * | 2006-12-20 | 2012-04-03 | Robert Bosch Gmbh | Exhaust gas sensor and method of manufacture |
| JP5129599B2 (en) * | 2007-05-08 | 2013-01-30 | 日本特殊陶業株式会社 | Gas sensor and manufacturing method thereof |
| DE102007023158A1 (en) * | 2007-05-16 | 2008-11-20 | Robert Bosch Gmbh | gas sensor |
| JP4471016B2 (en) | 2008-04-07 | 2010-06-02 | トヨタ自動車株式会社 | Gas sensor and manufacturing method thereof |
| CN102346178A (en) * | 2010-07-26 | 2012-02-08 | 比亚迪股份有限公司 | Gas transducer seal component and an automobile oxygen sensor |
| DE102010041482B4 (en) * | 2010-09-27 | 2020-12-10 | Robert Bosch Gmbh | Sensor device for detecting a property of a fluid medium |
| JP5220878B2 (en) * | 2011-02-16 | 2013-06-26 | 日本特殊陶業株式会社 | Gas sensor and its intermediate parts |
| CN103645008B (en) * | 2013-11-27 | 2016-04-06 | 芜湖致通汽车电子有限公司 | A kind of pressure sensor shell structure |
| DE102018127014A1 (en) * | 2018-10-30 | 2020-04-30 | Endress+Hauser Conducta Gmbh+Co. Kg | Process connection for a sensor and manufacturing process of the process connection |
| CN109738598B (en) * | 2019-04-02 | 2019-06-28 | 潍柴动力股份有限公司 | A kind of exhaust pipe and its tail gas acquire measuring device |
| DE102020125653B3 (en) * | 2020-10-01 | 2021-11-04 | Fette Compacting Gmbh | Sensor arrangement for a production facility and a method for transferring a sensor into a housing of a production facility and from a housing of a production facility |
| CN112343698B (en) * | 2020-11-02 | 2022-05-31 | 上海澳羽机电环保设备有限公司 | Engine exhaust flowmeter |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19705402A1 (en) * | 1996-07-17 | 1998-01-22 | Bosch Gmbh Robert | Gas sensor |
| US5739414A (en) * | 1996-02-12 | 1998-04-14 | General Motors Corporation | Sensor with glass seal |
| CN1181812A (en) * | 1996-03-06 | 1998-05-13 | 罗伯特·博施有限公司 | Measurement sensor |
| DE19739435A1 (en) * | 1997-09-09 | 1999-03-11 | Bosch Gmbh Robert | Sensor |
-
2004
- 2004-12-28 DE DE200410063085 patent/DE102004063085A1/en not_active Withdrawn
-
2005
- 2005-12-28 CN CN 200510135771 patent/CN1796991B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5739414A (en) * | 1996-02-12 | 1998-04-14 | General Motors Corporation | Sensor with glass seal |
| CN1181812A (en) * | 1996-03-06 | 1998-05-13 | 罗伯特·博施有限公司 | Measurement sensor |
| US5955656A (en) * | 1996-03-06 | 1999-09-21 | Robert Bosch Gmbh | Measuring sensor |
| DE19705402A1 (en) * | 1996-07-17 | 1998-01-22 | Bosch Gmbh Robert | Gas sensor |
| DE19739435A1 (en) * | 1997-09-09 | 1999-03-11 | Bosch Gmbh Robert | Sensor |
| CN1269887A (en) * | 1997-09-09 | 2000-10-11 | 罗伯特·博施有限公司 | Measuring probe |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102004063085A1 (en) | 2006-07-06 |
| CN1796991A (en) | 2006-07-05 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20181228 |
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| CF01 | Termination of patent right due to non-payment of annual fee |