CN103026217A - Gas sensor - Google Patents
Gas sensor Download PDFInfo
- Publication number
- CN103026217A CN103026217A CN2011800382138A CN201180038213A CN103026217A CN 103026217 A CN103026217 A CN 103026217A CN 2011800382138 A CN2011800382138 A CN 2011800382138A CN 201180038213 A CN201180038213 A CN 201180038213A CN 103026217 A CN103026217 A CN 103026217A
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- CN
- China
- Prior art keywords
- flange
- outer housing
- sensor outer
- hollow bolt
- sensor
- 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.)
- Pending
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- 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
-
- 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
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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)
Abstract
A gas sensor for installation in a fitting piece (11) for a measurement gas line (10), particularly for an exhaust gas system in an internal combustion engine, is specified which has a sensor housing (12) with a circumferential collar (121) and a protective tube (13) which can be passed through the fitting piece (11), can be exposed to the measurement gas and is mounted on the sensor housing (12) beneath the collar (121). To match the gas sensor to requisite different installation depths in the fitting piece (11) with simultaneous ease of assembly, the sensor housing (12) has a hollow screw (17) seated on it which can be screwed in the fitting piece (11). The hollow screw (17) firstly has, on the inside, an annular supporting shoulder (19) which is in contact with the sensor housing collar (121), and secondly has, on the outside, a radially protruding assembly flange (20) and is permanently connected to the sensor housing (12), e.g. by a weld (21).
Description
Technical field
The present invention relates to a kind of gas sensor of admittance sleeve pipe of as described in the preamble, the exhaust system that is used for being installed in measurement gas pipeline, particularly internal combustion engine by claim 1.
Background technology
The gas sensor of the oxygen concentration in the exhaust known, that be used for definite internal combustion engine or the sensor outer housing that detector (DE 197 39 435 A1) has tubulose, its have radial loop around flange, this flange is made of the projection that the upsetting by sensor outer housing produces.Protection tube is inserted on the end of exhaust side of shell, and this protection tube has the tube end of reduced, and protection tube and sensor outer housing are welded to one another in the overlap joint zone.Protection tube is hiding end section sensor element, that stretch out that is fixed in the sensor outer housing from this sensor outer housing, described protection tube bears exhaust after being installed to the admittance sleeve pipe of gas outlet.Admit in the sleeve pipe for gas sensor is installed in, protection tube and shell are through hollow admittance sleeve pipe partly, until the flange on the sensor outer housing is positioned on the annular end face of admitting sleeve pipe.Then; shifting set nut on the sensor outer housing onto utilizes its internal thread to be screwed in to be present in the external thread of admitting on the sleeve pipe; until the flange on the sensor outer housing is at set nut with admit between the sleeve pipe and clamp, this set nut utilizes annular shoulder to be bearing on the upside of dorsad protection tube of flange.
The same known concentration that is used for definite gas componant or the gas sensor (US 2003/0019751 A1) of temperature have sensor outer housing, and it is with externally radially outstanding annular flange flange and the protection tube that is connected with sensor outer housing under flange.This sensor outer housing is made of the housing base of carrying flange and the protective casing that is placed on the housing base, and this protective casing is fixedly connected with housing base on flange.In this gas sensor, this flange also is used for gas sensor is fastened on the admittance sleeve pipe, and wherein this flange is so arranged, so that this protection tube is guided through the admittance sleeve pipe and bears measurement gas fully at least.
Summary of the invention
Advantage by the gas sensor of the feature with claim 1 of the present invention is can change the fitting depth of gas sensor in admitting sleeve pipe by the hollow bolt that is fixed on the sensor outer housing, and therefore can be matched with different installation situation.For this reason, only need change the axial spacing size between the downside of protection tube of the mounting flange on supporting shoulder and hollow bolt.Because this hollow bolt is the member of the independent cost economy of making, so various hollow bolt can be provided in advance, it has the user expectation of being matched with, different gas sensor fitting depths.This gas sensor carries out intactly pre-installation by the corresponding hollow bolt of selecting, and only needs in the infield just can be threaded with commercial general erecting tools.The hollow bolt that is fixed on the sensor outer housing especially is suitable for installing mini type gas sensor, and for example they are applied in the motorcycle, and wherein this hollow bolt can be complementary for the admittance sleeve pipe different from dimension of inner screw thread as adapter extraly.
By the measure of describing in other claims, can be implemented in favourable improvement project and the improvement of the gas sensor of explanation in the claim 1.
By a kind of favourable embodiment of the present invention; the supporting that is formed on hollow bolt inside is takeed on the upside of the dorsad protection tube that is positioned at sensor outer housing-flange; and being fixedly connected with by weld seam between hollow bolt and sensor outer housing set up, and this weld seam guides around sensor outer housing in the end of the dorsad mounting flange of hollow bolt.By the weld seam of supporting shoulder and annular, can be based upon air seal between sensor outer housing and the hollow bolt in the simple mode in manufacturing technology aspect.
By alternative embodiment of the present invention; hollow bolt utilize its supporting shoulder abut in sensor outer housing-flange on the downside of protection tube; and being fixedly connected with by having externally threaded threaded sleeve between hollow bolt and sensor outer housing set up; this threaded sleeve is threaded in the internal thread and is bearing on the upside of dorsad protection tube of sensor outer housing-flange, and this internal thread is formed in the hollow bolt in the zone of mounting flange.The advantage of the alternative connected mode of hollow bolt and sensor outer housing is, when gas sensor can not be fixed in the admittance sleeve pipe with getting loose again, namely when so-called screw thread blocks (Gewinderfressern), can realize by threaded sleeve the dismounting of gas sensor.
By a kind of favourable embodiment of the present invention, the shim that is preferably made of copper is set between the flange on the distolateral and sensor outer housing of threaded sleeve.Be screwed into and elastic deformation fixedly the time at threaded sleeve by shim, can compensate manufacturing tolerance, and guarantee the air seal between sensor outer housing, threaded sleeve and hollow bolt.
By a kind of favourable embodiment of the present invention, in hollow bolt, be right after mounting flange under the downside of protection tube, form ring groove, in ring groove, keeping being pressed into mounting flange and admitting O-ring seal between sleeve pipe distolateral.Can also pre-installation be used for the seal element that sleeve pipe is admitted in sealing by this ring groove, thereby can provide complete, be used for the gas sensor directly installed at vehicle.
Description of drawings
At length set forth in the following description the present invention by embodiment illustrated in the accompanying drawings.Wherein show:
Fig. 1 partly and partly cut-away show gas sensor in the installation site in the admittance sleeve pipe of measurement gas pipeline;
Fig. 2 shows another embodiment of gas sensor with the view identical with Fig. 1;
Fig. 3 shows the shim of the gas sensor among Fig. 2 with skeleton view.
Embodiment
In Fig. 1 with side view partly and the gas sensor shown in the partly cut-away be arranged in the admittance sleeve pipe 11 that is installed to measurement gas pipeline 10, and for example be used for determining the temperature of the measurement gas that flows at measurement gas pipeline 10 or the concentration of gas componant.In vehicle structure, for example in automobile or motorcycle, gas sensor is installed in the exhaust system of internal combustion engine, and as lambda probe or oxides of nitrogen probe to be used for determining oxygen concentration or the nitrous oxides concentration of I. C. engine exhaust.
This gas sensor has the sensor outer housing 12 and the protection tube 13 that is fixed on the sensor outer housing 12 with annular flange 121.This sensor outer housing 12 comprises the metal shell matrix 15 and the protective casing 14 shown in the part that carries flange 121.As known and for example as described in US 2003/0019751 A1, the sensor element of gas sensitization is fixed on by packing in the housing base 15.This sensor element is outstanding from housing base 15 with the end section that is connected side with the end section of measurement gas side.This end section that connects side is hidden by protective casing 14, and the end section of measurement gas side is hidden by protection tube 13.This protection tube 13 is being connected with housing base 15 respectively by weld seam 162 on flange 121 by weld seam 161 and protective casing 14 under the flange 121.Be equipped with in the female admittance sleeve pipe 11 in order to be installed in, this gas sensor have be arranged on the sensor outer housing 12, can be threaded connection with at the hollow bolt 17 of admitting sleeve pipe 11.Hollow bolt 17 with external thread 18 has the annular support shoulder 19 on the flange 121 that abuts in sensor outer housing 12 on the one hand in inside, externally has on the other hand radially outstanding mounting flange 20, and be connected with sensor outer housing 12 regularly, be connected with the housing base 15 of sensor outer housing 12 or rather.
In the embodiment of the gas sensor of pressing Fig. 1; supporting shoulder 19 is positioned on the upside that deviates from protection tube 13 of flange 121; and being fixedly connected with by weld seam 21 between hollow bolt 17 and sensor outer housing 12 set up, and this weld seam centers on sensor outer housing 12, guides around its housing base 15 or rather in the end that deviates from mounting flange 20 of hollow bolt 17.In hollow bolt 17, be right after the formation ring groove 22 under the downside 201 of protection tube 13 at mounting flange 20.Locking sealing ring 23 in this ring groove 22, thus the sealing ring can not by mistake break away from from hollow bolt 17.Admit in the sleeve pipe 11 by gas sensor is inserted into, sealing ring 23 is at the downside 201 of mounting flange 20 and admit between the annular end face 111 of sleeve pipe 11 and compress, and therefore sets up air seal admitting between sleeve pipe 11 and the gas sensor.
In the embodiment shown in Fig. 2 of gas sensor, being fixedly connected with between sensor outer housing 12 and hollow bolt 17 is not to set up by welding, but is threaded connection to set up.For this reason; hollow bolt 17 with respect to the hollow bolt 17 among Fig. 1 slightly micrometric displacements supporting shoulder 24 sensor outer housing 12 abut in flange 121 on the downside of protection tube 13; and being fixedly connected with by being positioned at sensor outer housing 12 between hollow bolt 17 and sensor outer housing 12; the threaded sleeve 25 that is positioned at or rather its protective casing 14 is set up; this threaded sleeve is threaded in the internal thread 27 by external thread 26; this internal thread is arranged in the hollow bolt 17 in the zone of mounting flange 20, and this threaded sleeve utilizes its annular end side bearing on the upside that deviates from protection tube 13 of flange 121.In order to install, threaded sleeve 25 distolaterally has a recess 28 its another, is used for inserting erecting tools.In the view in Fig. 2, can see two opposite recesses 28.
In order between threaded sleeve 25 and sensor outer housing 12, to set up air seal, the flange 121 on the sensor outer housing 12 and threaded sleeve 25 towards between flange 121 distolateral shim 29 is set, as its among Fig. 2 with sectional view and illustrating with skeleton view among Fig. 3.This shim 29 is preferably made of copper, and presses against on the flange 121 when threaded sleeve 25 is threaded in the hollow bolt 17.Sealing between hollow bolt 17 and admittance sleeve pipe 11 realizes by sealing ring 23 pre-installation, that remain in the ring groove 22 that in the mode identical with the embodiment of Fig. 1 the sealing ring compresses between the end face 111 of the mounting flange 20 on the housing base 15 and admittance sleeve pipe 11.
Claims (7)
1. be used for being installed to measurement gas pipeline (10), the gas sensor of the admittance sleeve pipe (11) of the exhaust system of internal combustion engine especially, it has: with the sensor outer housing (12) of annular flange flange (121); Can be directed penetrating protection tube (13) described admittance sleeve pipe (11), that can bear measurement gas, described protection tube is being fixed under the described flange (121) on the described sensor outer housing (12), it is characterized in that, be arranged in hollow bolt (17) on the described sensor outer housing (12), that can be threaded in described admittance sleeve pipe (11) and have in inside on the one hand and abut in supporting shoulder (19 on the described flange (121), ring-type; 24) and the mounting flange (20) that externally has on the other hand radial projection, and described hollow bolt is fixedly connected with described sensor outer housing (12).
2. by gas sensor claimed in claim 1; it is characterized in that; the supporting shoulder (19) of described hollow bolt (17) is positioned on the upside that deviates from described protection tube (13) of the described flange (121) on the described sensor outer housing (12); and being fixedly connected with by weld seam (21) between described hollow bolt (17) and the described sensor outer housing (12) set up, and described weld seam guides around described sensor outer housing (12) in the end that deviates from described mounting flange (20) of described hollow bolt (17).
3. by gas sensor claimed in claim 1; it is characterized in that; described hollow bolt (17) utilize its supporting shoulder (24) abut in described flange (121) on the described sensor outer housing (12) on the downside of described protection tube (13); and being fixedly connected with by the threaded sleeve (25) of shifting onto on the described sensor outer housing (12) between described hollow bolt (17) and the described sensor outer housing (12) set up; described threaded sleeve is threaded in the internal thread (27) by external thread (26) and utilizes on the distolateral upside that deviates from described protection tube (13) that is bearing in the described flange (121) on the described sensor outer housing (12), and described internal thread is formed in the zone of described mounting flange (20) in the described hollow bolt (17).
4. by gas sensor claimed in claim 3, it is characterized in that described threaded sleeve (25) has at least two recesses (28) distolateral, is used for inserting erecting tools.
5. by claim 3 or 4 described gas sensors, it is characterized in that, the described flange (121) on the described sensor outer housing (12) and described threaded sleeve (25) towards the shim (29) that is preferably made of copper is set between described flange (121) distolateral.
6. by each described gas sensor in the claim 1 to 5; it is characterized in that; in described hollow bolt (17), be right after described mounting flange (20) under the downside of described protection tube (13), form ring groove (22), in described ring groove, be fixed wtih the O-ring seal (23) that is pressed between described mounting flange (20) and described admittance sleeve pipe (11) distolateral.
7. by each described gas sensor in the claim 1 to 6; it is characterized in that; described sensor outer housing (12) comprises housing base (15) and the protective casing (14) of the described flange of carrying (121), distinguishes regularly, preferably is connected with described housing base (15) by welding at the described protective casing (14) on the described flange (12) and the described protection tube (13) under described flange (121).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201010038901 DE102010038901A1 (en) | 2010-08-04 | 2010-08-04 | gas sensor |
| DE102010038901.3 | 2010-08-04 | ||
| PCT/EP2011/059795 WO2012016742A1 (en) | 2010-08-04 | 2011-06-14 | Gas sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103026217A true CN103026217A (en) | 2013-04-03 |
Family
ID=44343182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011800382138A Pending CN103026217A (en) | 2010-08-04 | 2011-06-14 | Gas sensor |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN103026217A (en) |
| DE (1) | DE102010038901A1 (en) |
| WO (1) | WO2012016742A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107407654A (en) * | 2015-03-24 | 2017-11-28 | 株式会社电装 | Gas sensor |
| CN108152248A (en) * | 2017-11-24 | 2018-06-12 | 北京机械设备研究所 | A kind of diesel generating set fuel path air detecting device and method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9771186B1 (en) | 2016-06-17 | 2017-09-26 | Bag Strategies and Solutions, LLC | Shipping bag with non-registering handle |
| CN107537690A (en) * | 2017-09-30 | 2018-01-05 | 艾尼科环保技术(安徽)有限公司 | A kind of electrostatic precipitator scrapper conveyor broken chain detecting device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4124989A (en) * | 1975-06-04 | 1978-11-14 | Redpath Dorman Long (North Sea) Limited | Supports for maritime structures |
| US4588494A (en) * | 1984-03-16 | 1986-05-13 | Ngk Insulators, Ltd. | Oxygen sensor |
| US4880519A (en) * | 1988-05-24 | 1989-11-14 | Gte Laboratories Incorporated | Gas sensor element |
| DE102007037549A1 (en) * | 2007-08-09 | 2009-02-12 | Robert Bosch Gmbh | Gas sensor for determining e.g. temperature of exhaust gas, in internal combustion engine, has flange formed at protective pipe as single piece, where pipe is shrunk on housing with end section of pipe staying behind flange |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4119513A (en) * | 1977-03-07 | 1978-10-10 | Uop Inc. | Oxygen sensor for industrial air/fuel control |
| DE19739435A1 (en) | 1997-09-09 | 1999-03-11 | Bosch Gmbh Robert | Sensor |
| DE10132828A1 (en) | 2001-07-06 | 2003-01-16 | Bosch Gmbh Robert | Gas sensor used for determining concentration or temperature of gas component in IC engine exhaust gas, analysis comprises sensor element arranged in housing, and contact holders arranged opposite each other |
-
2010
- 2010-08-04 DE DE201010038901 patent/DE102010038901A1/en not_active Withdrawn
-
2011
- 2011-06-14 CN CN2011800382138A patent/CN103026217A/en active Pending
- 2011-06-14 WO PCT/EP2011/059795 patent/WO2012016742A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4124989A (en) * | 1975-06-04 | 1978-11-14 | Redpath Dorman Long (North Sea) Limited | Supports for maritime structures |
| US4588494A (en) * | 1984-03-16 | 1986-05-13 | Ngk Insulators, Ltd. | Oxygen sensor |
| US4880519A (en) * | 1988-05-24 | 1989-11-14 | Gte Laboratories Incorporated | Gas sensor element |
| DE102007037549A1 (en) * | 2007-08-09 | 2009-02-12 | Robert Bosch Gmbh | Gas sensor for determining e.g. temperature of exhaust gas, in internal combustion engine, has flange formed at protective pipe as single piece, where pipe is shrunk on housing with end section of pipe staying behind flange |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107407654A (en) * | 2015-03-24 | 2017-11-28 | 株式会社电装 | Gas sensor |
| CN107407654B (en) * | 2015-03-24 | 2020-05-05 | 株式会社电装 | Gas sensor |
| CN108152248A (en) * | 2017-11-24 | 2018-06-12 | 北京机械设备研究所 | A kind of diesel generating set fuel path air detecting device and method |
| CN108152248B (en) * | 2017-11-24 | 2020-04-10 | 北京机械设备研究所 | Air detection device and method for fuel oil circuit of diesel generator set |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102010038901A1 (en) | 2012-02-09 |
| WO2012016742A1 (en) | 2012-02-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130403 |