WO2012016742A1 - Gas sensor - Google Patents
Gas sensor Download PDFInfo
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- WO2012016742A1 WO2012016742A1 PCT/EP2011/059795 EP2011059795W WO2012016742A1 WO 2012016742 A1 WO2012016742 A1 WO 2012016742A1 EP 2011059795 W EP2011059795 W EP 2011059795W WO 2012016742 A1 WO2012016742 A1 WO 2012016742A1
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- WIPO (PCT)
- Prior art keywords
- sensor housing
- collar
- hollow screw
- gas
- sensor
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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
Definitions
- the invention relates to a gas sensor for installation in a receiving socket of a sample gas line, in particular an exhaust line of an internal combustion engine, according to the preamble of claim 1.
- a known gas sensor or sensor for determining the oxygen concentration in the exhaust gas of internal combustion engines (DE 197 39 435 A1) has a rohrformiges sensor housing with a radially encircling collar, which is formed by a bead produced by compression of the sensor housing.
- a protective tube is used with a reduced diameter pipe end, and the protective tube and sensor housing are welded together in the overlap region.
- the protective tube projecting from the sensor housing and extending beyond the end section of a sensor element fixed in the sensor housing is exposed to the exhaust gas after installation in a receiving socket of an exhaust gas pipe.
- the protective tube and partially the housing is passed through the hollow receiving socket until the collar hangs on the sensor housing on the annular end face of the receiving nozzle. Then a pushed onto the sensor housing union nut, which is supported with an annular shoulder on the upper side facing away from the protective tube of the collar, screwed with its internal thread present in a receiving socket external thread until the collar is clamped to the sensor housing between the union nut and the receiving socket.
- a likewise known gas sensor for determining the concentration or the temperature of a gas component (US 2003/0019751 A1) has a sensor housing with an outer radially projecting, circumferential collar and connected to the sensor housing below the collar protective tube.
- the sensor housing consists of a housing body carrying the collar and a protective sleeve placed on the housing body, which is fixedly connected to the housing body above the collar.
- the collar is used for clamping the gas sensor in a receiving socket, wherein the collar is arranged so that at least the protective tube is passed through the receiving nozzle and completely exposed to the sample gas. Disclosure of the invention
- the gas sensor according to the invention with the features of claim 1 has the advantage that by means of the hollow screw fixed on the sensor housing, the installation depth of the gas sensor in the receiving socket varies and thus can be adapted to different installation specifications. For this purpose, only the axial distance between the support shoulder and the protective tube facing the underside of the mounting flange to be changed to the hollow screw. Since the hollow screw is a separately manufactured, cost-effective component, various hollow screws with customized to the customer's requirements, different mounting depths of the gas sensor can be kept.
- the gas sensor is completely pre-assembled with the appropriately selected banjo bolt and needs to be screwed in place only with a commercially available assembly tool.
- the fixed on the sensor housing hollow screw is particularly suitable for the installation of small-scale gas sensors, such as those used in motor sport vehicles, the hollow screw can also be used as an adapter to adapt to receiving socket with different internal thread dimensions.
- the support shoulder formed in the interior of the hollow screw on the remote from the protective tube top of the sensor housing collar, and the fixed connection between
- Banjo bolt and sensor housing is made by a weld, which the end facing away from the mounting flange of the hollow screw is guided around the sensor housing.
- a gas tightness between the sensor housing and hollow screw is produced in a simple manufacturing technology.
- the hollow screw is located with its support shoulder on the protective tube facing the bottom of the sensor housing collar, and the fixed connection between the hollow screw and sensor housing is made by a threaded sleeve provided with an external thread in a hollow screw in the area screwed is formed of the mounting flange formed and is supported on the side facing away from the protective tube top of the sensor housing collar.
- This alternative combination of hollow screw and sensor housing has the advantage that disassembly of the gas sensor via the threaded sleeve is possible with no longer releasable interference fit of the gas sensor in the receiving socket, so-called. Gewindefressern.
- a shim preferably made of copper is arranged between the end face of the threaded sleeve and the collar on the sensor housing.
- annular groove is incorporated in the hollow bolt immediately below the protective tube facing the bottom of the mounting flange, in which a between mounting flange and end face of the receiving nozzle pressed-in sealing ring is held.
- FIG. 2 shows a similar representation as in FIG. 1 of a further exemplary embodiment of the gas sensor
- FIG. 3 is a perspective view of a shim of the gas sensor in FIG. 2.
- the gas sensor shown partially in section in side view in FIG. 1 is intended for installation in a receiving nozzle 11 of a sample gas line 10 and serves, for example, for determining the concentration of a gas component or the temperature of a measuring gas flowing in the sample gas line 10.
- the gas sensor is used in the exhaust system of the internal combustion engine and serves as a lambda probe or nitrogen oxide probe for determining the oxygen or nitrogen oxide concentration in the exhaust gas of the internal combustion engine.
- the gas sensor has a sensor housing 12 with a circumferential collar 121 and a protective tube 13 fastened to the sensor housing 12.
- the sensor housing 12 comprises a metallic housing body 15, which carries the collar 121, and a protective sleeve 14, which is shown in sections.
- a gas-sensitive sensor element is fixed in the housing body 15 by means of a gasket.
- the sensor element protrudes from the housing body 15 with a measuring gas side end portion and a terminal side end portion.
- the connection-side end portion is covered by the protective sleeve 14 and the messgasseiti- ge end portion of the protective tube 13.
- the protective tube 13 is below the collar 121 by means of a weld 161 and the protective sleeve 14 is above the collar 121 by means of a weld 162 each connected to the housing body 15.
- the gas sensor has a seated on the sensor housing 12, in the receiving socket 1 1 ver screwed hollow screw 17.
- the hollow screw 17 provided with an external thread 18 has, on the one hand, inside, an annular support shoulder resting on the collar 121 of the sensor housing 12 19 and on the other hand outside a radially projecting mounting flange 20 and is fixed to the sensor housing 12, more precisely to the housing body 15 of the sensor housing 12, respectively.
- the support shoulder 19 is located on the side facing away from the protective tube 13 top of the collar 121, and the fixed connection between the hollow screw 17 and sensor housing 12 is made by a weld 21, which at the end remote from the mounting flange 20 end of the hollow screw 17 is guided around the sensor housing 12, more precisely around its housing body 15.
- a weld 21 which at the end remote from the mounting flange 20 end of the hollow screw 17 is guided around the sensor housing 12, more precisely around its housing body 15.
- an annular groove 22 is incorporated directly below the protective tube 13 facing bottom 201 of the mounting flange 20.
- a sealing ring 23 is snapped so that it can not fall unintentionally from the hollow screw 17.
- the sealing ring 23 between the bottom 201 of the mounting flange 20 and the annular end face 1 1 1 of the receiving nozzle 1 1 is compressed and thus establishes the gas tightness between receiving port 1 1 and gas sensor.
- the hollow screw 17 is located with respect to the hollow screw 17 in Figure 1 slightly displaced support shoulder 24 on the protective tube 13 facing underside of the collar 121 on the sensor housing 12, and the fixed connection between the hollow screw 17 and sensor housing 12 by a on the sensor housing 12th , more precisely on the protective sleeve 14 seated threaded sleeve 25 made, which is bolted to an external thread 26 formed in the hollow screw 17 in the mounting flange 20 female thread 27 and is supported with its one annular end face on the side facing away from the protective tube 13 top of the collar 121 ,
- the threaded sleeve 25 has on its other end side recesses 28 for inserting a mounting tool. In the illustration in Figure 2, two diametrical recesses 28 can be seen.
- shim 29 ordered, as can be seen in Figure 2 in section and in Figure 3 in perspective view.
- the shim 29 is preferably made of copper and is pressed when screwing the threaded sleeve 25 in the hollow screw 17 against the collar 121.
- the seal between the hollow screw 17 and receiving socket 1 1 takes place in the same manner as in the embodiment in
- Figure 1 by the pre-assembled, held in the annular groove 22 sealing ring 23 which is compressed between the mounting flange 20 on the housing body 15 and the end face 1 1 1 of the receiving nozzle 1 1.
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Abstract
Description
Beschreibung description
Titel title
Gassensor Stand der Technik Gas sensor prior art
Die Erfindung geht aus von einem Gassensor zum Einbau in einen Aufnahmestutzen einer Messgasleitung, insbesondere einem Abgasstrang einer Brennkraftmaschine, nach dem Oberbegriff des Anspruchs 1. The invention relates to a gas sensor for installation in a receiving socket of a sample gas line, in particular an exhaust line of an internal combustion engine, according to the preamble of claim 1.
Ein bekannter Gassensor oder Messfühler zur Bestimmung der Sauerstoffkonzentration im Abgas von Verbrennungsmotoren (DE 197 39 435 A1 ) weist ein rohrformiges Sensorgehäuse mit einem radial umlaufenden Kragen auf, der von einem durch Stauchen des Sensorgehäuses erzeugten Wulst gebildet ist. In das abgasseitige Ende des Gehäuses ist ein Schutzrohr mit einem im Durchmesser reduzierten Rohrende eingesetzt, und Schutzrohr und Sensorgehäuse sind im Überlappungsbereich miteinander verschweißt. Das den aus dem Sensorgehäuse herausragenden Endabschnitt eines im Sensorgehäuse festgelegten Sensorelements überdeckende Schutzrohr ist nach Einbau in einen Aufnahmestutzen eines Abgasrohrs dem Abgas ausgesetzt. Zum Einbau des Gassensors in den Aufnahmestutzen wird das Schutzrohr und teilweise das Gehäuse durch den hohlen Aufnahmestutzen hindurchgeführt, bis sich der Kragen am Sensorgehäuse auf die ringförmige Stirnfläche des Aufnahmestutzens auflegt. Dann wird eine auf das Sensorgehäuse aufgeschobene Überwurfmutter, die sich mit einer Ringschulter auf der vom Schutzrohr abgekehrten Oberseite des Kragens abstützt, mit ihrem Innengewinde in einem am Aufnahmestutzen vorhandenen Außengewinde verschraubt, bis der Kragen am Sensorgehäuse zwischen der Überwurfmutter und dem Aufnahmestutzen festgespannt ist. A known gas sensor or sensor for determining the oxygen concentration in the exhaust gas of internal combustion engines (DE 197 39 435 A1) has a rohrformiges sensor housing with a radially encircling collar, which is formed by a bead produced by compression of the sensor housing. In the exhaust-side end of the housing, a protective tube is used with a reduced diameter pipe end, and the protective tube and sensor housing are welded together in the overlap region. The protective tube projecting from the sensor housing and extending beyond the end section of a sensor element fixed in the sensor housing is exposed to the exhaust gas after installation in a receiving socket of an exhaust gas pipe. For installation of the gas sensor in the receiving socket, the protective tube and partially the housing is passed through the hollow receiving socket until the collar hangs on the sensor housing on the annular end face of the receiving nozzle. Then a pushed onto the sensor housing union nut, which is supported with an annular shoulder on the upper side facing away from the protective tube of the collar, screwed with its internal thread present in a receiving socket external thread until the collar is clamped to the sensor housing between the union nut and the receiving socket.
Ein ebenfalls bekannter Gassensor zur Bestimmung der Konzentration oder der Temperatur einer Gaskomponente (US 2003/0019751 A1 ) weist ein Sensorge- häuse mit einem außen radial abstehenden, umlaufenden Kragen sowie ein mit dem Sensorgehäuse unterhalb des Kragens verbundenes Schutzrohr auf. Das Sensorgehäuse besteht aus einem den Kragen tragenden Gehäusekörper und einer auf den Gehäusekörper aufgesetzten Schutzhülse, die oberhalb des Kra- gens mit dem Gehäusekörper fest verbunden ist. Auch bei diesem Gassensor dient der Kragen zum Festspannen des Gassensors in einem Aufnahmestutzen, wobei der Kragen so angeordnet ist, dass zumindest das Schutzrohr durch den Aufnahmestutzen hindurchgeführt und vollständig dem Messgas ausgesetzt ist. Offenbarung der Erfindung A likewise known gas sensor for determining the concentration or the temperature of a gas component (US 2003/0019751 A1) has a sensor housing with an outer radially projecting, circumferential collar and connected to the sensor housing below the collar protective tube. The sensor housing consists of a housing body carrying the collar and a protective sleeve placed on the housing body, which is fixedly connected to the housing body above the collar. Also in this gas sensor, the collar is used for clamping the gas sensor in a receiving socket, wherein the collar is arranged so that at least the protective tube is passed through the receiving nozzle and completely exposed to the sample gas. Disclosure of the invention
Der erfindungsgemäße Gassensor mit den Merkmalen des Anspruchs 1 hat den Vorteil, dass mittels der auf dem Sensorgehäuse festgelegten Hohlschraube die Einbautiefe des Gassensors im Aufnahmestutzen variiert und somit an unterschiedliche Einbauvorgaben angepasst werden kann. Hierzu ist lediglich das axiale Abstandsmaß zwischen der Stützschulter und der dem Schutzrohr zugekehrten Unterseite des Montageflansches an der Hohlschraube zu verändern. Da die Hohlschraube ein separat gefertigtes, kostengünstiges Bauteil ist, können diverse Hohlschrauben mit an die Kundenwünsche angepassten, unterschiedlichen Einbautiefen des Gassensors vorgehalten werden. Der Gassensor wird mit der entsprechend ausgewählten Hohlschraube komplett vormontiert und braucht am Einbauort nur noch mit einem handelsüblichen Montagewerkzeug eingeschraubt zu werden. Die auf dem Sensorgehäuse festgelegte Hohlschraube ist besonders zum Einbau von baukleinen Gassensoren, wie sie in Motorsportfahrzeugen zum Einsatz kommen, geeignet, wobei die Hohlschraube zusätzlich als Adapter zur Anpassung an Aufnahmestutzen mit unterschiedlichen Innengewindemaßen genutzt werden kann. The gas sensor according to the invention with the features of claim 1 has the advantage that by means of the hollow screw fixed on the sensor housing, the installation depth of the gas sensor in the receiving socket varies and thus can be adapted to different installation specifications. For this purpose, only the axial distance between the support shoulder and the protective tube facing the underside of the mounting flange to be changed to the hollow screw. Since the hollow screw is a separately manufactured, cost-effective component, various hollow screws with customized to the customer's requirements, different mounting depths of the gas sensor can be kept. The gas sensor is completely pre-assembled with the appropriately selected banjo bolt and needs to be screwed in place only with a commercially available assembly tool. The fixed on the sensor housing hollow screw is particularly suitable for the installation of small-scale gas sensors, such as those used in motor sport vehicles, the hollow screw can also be used as an adapter to adapt to receiving socket with different internal thread dimensions.
Durch die in den weiteren Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Anspruch 1 angegebenen Gassensors möglich. The measures listed in the further claims advantageous refinements and improvements of the claim 1 gas sensor are possible.
Gemäß einer vorteilhaften Ausführungsform der Erfindung liegt die im Innern der Hohlschraube ausgebildete Stützschulter auf der vom Schutzrohr abgekehrten Oberseite des Sensorgehäuse-Kragens auf, und die festen Verbindung zwischenAccording to an advantageous embodiment of the invention, the support shoulder formed in the interior of the hollow screw on the remote from the protective tube top of the sensor housing collar, and the fixed connection between
Hohlschraube und Sensorgehäuse ist durch eine Schweißnaht hergestellt, die an dem vom Montageflansch abgekehrten Ende der Hohlschraube um das Sensorgehäuse herumgeführt ist. Durch Stützschulter und umlaufende Schweißnaht wird in fertigungstechnisch einfacher Weise eine Gasdichtheit zwischen Sensorgehäuse und Hohlschraube hergestellt. Banjo bolt and sensor housing is made by a weld, which the end facing away from the mounting flange of the hollow screw is guided around the sensor housing. By supporting shoulder and circumferential weld a gas tightness between the sensor housing and hollow screw is produced in a simple manufacturing technology.
Gemäß einer alternativen Ausführungsform der Erfindung liegt die Hohlschraube mit ihrer Stützschulter an der dem Schutzrohr zugekehrte Unterseite des Sensorgehäuse-Kragens an, und die feste Verbindung zwischen Hohlschraube und Sensorgehäuse ist durch eine mit einem Außengewinde versehene Gewindehülse hergestellt, die in einem in der Hohlschraube im Bereich des Montageflansches ausgebildeten Innengewinde verschraubt ist und sich auf der vom Schutzrohr abgekehrten Oberseite des Sensorgehäuse-Kragens abstützt. Diese alternative Verbindung von Hohlschraube und Sensorgehäuse hat den Vorteil, dass bei nicht mehr lösbarem Festsitz des Gassensors im Aufnahmestutzen, also bei sog. Gewindefressern, eine Demontage des Gassensors über die Gewindehülse möglich ist. According to an alternative embodiment of the invention, the hollow screw is located with its support shoulder on the protective tube facing the bottom of the sensor housing collar, and the fixed connection between the hollow screw and sensor housing is made by a threaded sleeve provided with an external thread in a hollow screw in the area screwed is formed of the mounting flange formed and is supported on the side facing away from the protective tube top of the sensor housing collar. This alternative combination of hollow screw and sensor housing has the advantage that disassembly of the gas sensor via the threaded sleeve is possible with no longer releasable interference fit of the gas sensor in the receiving socket, so-called. Gewindefressern.
Gemäß einer vorteilhaften Ausführungsform der Erfindung ist zwischen der Stirnseite der Gewindehülse und dem Kragen am Sensorgehäuse eine vorzugsweise aus Kupfer hergestellte Ausgleichsscheibe angeordnet. Durch plastisches Verformen der Ausgleichsscheibe beim Einschrauben und Festziehen der Gewindehülse werden Fertigungstoleranzen ausgeglichen und die Gasdichtheit zwischen Sensorgehäuse, Gewindehülse und Hohlschraube sichergestellt. According to an advantageous embodiment of the invention, a shim preferably made of copper is arranged between the end face of the threaded sleeve and the collar on the sensor housing. By plastic deformation of the shim when screwing and tightening the threaded sleeve manufacturing tolerances are compensated and ensures the gas tightness between the sensor housing, threaded sleeve and hollow screw.
Gemäß einer vorteilhaften Ausführungsform der Erfindung ist in die Hohlschraube unmittelbar unterhalb der dem Schutzrohr zugekehrten Unterseite des Montageflansches eine Ringnut eingearbeitet, in der ein zwischen Montageflansch und Stirnseite des Aufnahmestutzens eingepresser Dichtungsring gehalten ist. Mittels dieser Ringnut kann bereits auch das zur Abdichtugn des Aufnahmestutzens erforderliche Dichtungselement vormontiert werden, so dass der komplette Gassensor zur direkten Montage im Fahrzeug angeliefert werden kann. According to an advantageous embodiment of the invention, an annular groove is incorporated in the hollow bolt immediately below the protective tube facing the bottom of the mounting flange, in which a between mounting flange and end face of the receiving nozzle pressed-in sealing ring is held. By means of this annular groove, the sealing element required for sealing the receiving nozzle can already be preassembled, so that the complete gas sensor can be delivered for direct mounting in the vehicle.
Kurze Beschreibung der Zeichnungen Brief description of the drawings
Die Erfindung ist anhand von in den Zeichnungen dargestellten Ausführungsbeispielen in der nachfolgenden Beschreibung näher erläutert. Es zeigen: Figur 1 ausschnittweise einen Gassensor in Einbaulage in einem Aufnahmestutzen einer Messgasleitung, teilweise geschnitten dargestellt, The invention is explained in more detail in the following description with reference to exemplary embodiments illustrated in the drawings. Show it: 1 shows a detail of a gas sensor in the installed position in a receiving socket of a sample gas line, shown partially in section,
Figur 2 eine gleiche Darstellung wie in Figur 1 eines weiteren Ausführungsbeispiels des Gassensors, FIG. 2 shows a similar representation as in FIG. 1 of a further exemplary embodiment of the gas sensor,
Figur 3 eine perspektivische Darstellung einer Ausgleichsscheibe des Gassensors in Figur 2. FIG. 3 is a perspective view of a shim of the gas sensor in FIG. 2.
Der in Figur 1 in Seitenansicht ausschnittweise und teilweise geschnitten dargestellte Gassensor ist zum Einbau in einen Aufnahmestutzen 1 1 einer Messgasleitung 10 vorgesehen und dient beispielsweise zur Bestimmung der Konzentration einer Gaskomponente oder der Temperatur eines in der Messgasleitung 10 strömenden Messgases. Im Kraftfahrzeugbau, z.B. bei Kraftwagen oder Motorrädern, wird der Gassensor in den Abgasstrang des Verbrennungsmotors eingesetzt und dient als Lambdasonde oder Stickoxidsonde zurr Bestimmung der Sauerstoff- bzw. Stickoxidkonzentration im Abgas des Verbrennungsmotors. The gas sensor shown partially in section in side view in FIG. 1 is intended for installation in a receiving nozzle 11 of a sample gas line 10 and serves, for example, for determining the concentration of a gas component or the temperature of a measuring gas flowing in the sample gas line 10. In the automotive industry, e.g. in motor vehicles or motorcycles, the gas sensor is used in the exhaust system of the internal combustion engine and serves as a lambda probe or nitrogen oxide probe for determining the oxygen or nitrogen oxide concentration in the exhaust gas of the internal combustion engine.
Der Gassensor weist ein Sensorgehäuse 12 mit einem umlaufenden Kragen 121 und ein und am Sensorgehäuse 12 befestigtes Schutzrohr 13 auf. Das Sensorgehäuse 12 umfasst einen metallischen Gehäusekörper 15, der den Kragen 121 trägt, und eine ausschnittweise dargestellte Schutzhülse 14. Wie bekannt und beispielsweise in der US 2003/0019751 A1 beschrieben ist, ist im Gehäusekörper 15 ein gassensitives Sensorelement mittels einer Dichtungspackung festgelegt. Das Sensorelement ragt mit einem messgasseitigen Endabschnitt und einem anschlussseitigen Endabschnitt aus dem Gehäusekörper 15 heraus. Der anschlussseitige Endabschnitt ist von der Schutzhülse 14 und der messgasseiti- ge Endabschnitt vom Schutzrohr 13 überdeckt. Das Schutzrohr 13 ist unterhalb des Kragens 121 mittels einer Schweißnaht 161 und die Schutzhülse 14 ist oberhalb des Kragens 121 mittels einer Schweißnaht 162 jeweils mit dem Gehäusekörper 15 verbunden. Zum Einbau in den mit einem Innengewinde ausgestatteten Aufnahmestutzen 1 1 weist der Gassensor eine auf dem Sensorgehäuse 12 sitzende, im Aufnahmestutzen 1 1 versch raubbare Hohlschraube 17 auf. Die mit einem Außengewinde 18 versehene Hohlschraube 17 weist einerseits innen eine am Kragen 121 des Sensorgehäuses 12 anliegende, ringförmige Stützschulter 19 und andererseits außen einen radial abstehenden Montageflansch 20 auf und ist fest mit dem Sensorgehäuse 12, genauer mit dem Gehäusekörper 15 des Sensorgehäuses 12, verbunden. Im Ausführungsbeispiel des Gassensors gemäß Figur 1 liegt die Stützschulter 19 auf der vom Schutzrohr 13 abgekehrten Oberseite des Kragens 121 auf, und die feste Verbindung zwischen Hohlschraube 17 und Sensorgehäuse 12 ist durch eine Schweißnaht 21 hergestellt, die an dem vom Montageflansch 20 abgekehrten Ende der Hohlschraube 17 um das Sensorgehäuse 12, genauer um den des- sen Gehäusekörper 15, herumgeführt ist. In die Hohlschraube 17 ist unmittelbar unterhalb der dem Schutzrohr 13 zugekehrten Unterseite 201 des Montageflansches 20 eine Ringnut 22 eingearbeitet. In die Ringnut 22 ist ein Dichtungsring 23 eingeschnappt, so dass er nicht unbeabsichtigt von der Hohlschraube 17 abfallen kann. Mit Einschrauben des Gassensors in den Aufnahmestutzen 1 1 wird der Dichtungsring 23 zwischen der Unterseite 201 des Montageflansches 20 und der ringförmigen Stirnfläche 1 1 1 des Aufnahmestutzens 1 1 zusammengepresst und stellt so die Gasdichtheit zwischen Aufnahmestutzen 1 1 und Gassensor her. The gas sensor has a sensor housing 12 with a circumferential collar 121 and a protective tube 13 fastened to the sensor housing 12. The sensor housing 12 comprises a metallic housing body 15, which carries the collar 121, and a protective sleeve 14, which is shown in sections. As is known and described, for example, in US 2003/0019751 A1, a gas-sensitive sensor element is fixed in the housing body 15 by means of a gasket. The sensor element protrudes from the housing body 15 with a measuring gas side end portion and a terminal side end portion. The connection-side end portion is covered by the protective sleeve 14 and the messgasseiti- ge end portion of the protective tube 13. The protective tube 13 is below the collar 121 by means of a weld 161 and the protective sleeve 14 is above the collar 121 by means of a weld 162 each connected to the housing body 15. For installation in the receiving socket 1 1 equipped with an internal thread, the gas sensor has a seated on the sensor housing 12, in the receiving socket 1 1 ver screwed hollow screw 17. The hollow screw 17 provided with an external thread 18 has, on the one hand, inside, an annular support shoulder resting on the collar 121 of the sensor housing 12 19 and on the other hand outside a radially projecting mounting flange 20 and is fixed to the sensor housing 12, more precisely to the housing body 15 of the sensor housing 12, respectively. In the embodiment of the gas sensor according to Figure 1, the support shoulder 19 is located on the side facing away from the protective tube 13 top of the collar 121, and the fixed connection between the hollow screw 17 and sensor housing 12 is made by a weld 21, which at the end remote from the mounting flange 20 end of the hollow screw 17 is guided around the sensor housing 12, more precisely around its housing body 15. In the hollow screw 17, an annular groove 22 is incorporated directly below the protective tube 13 facing bottom 201 of the mounting flange 20. In the annular groove 22, a sealing ring 23 is snapped so that it can not fall unintentionally from the hollow screw 17. By screwing the gas sensor into the receiving socket 1 1, the sealing ring 23 between the bottom 201 of the mounting flange 20 and the annular end face 1 1 1 of the receiving nozzle 1 1 is compressed and thus establishes the gas tightness between receiving port 1 1 and gas sensor.
Bei dem in Figur 2 skizzierten Ausführungsbeispiel des Gassensors wird die fes- te Verbindung zwischen Sensorgehäuse 12 und Hohlschraube 17 nicht durchIn the embodiment of the gas sensor sketched in FIG. 2, the fixed connection between sensor housing 12 and hollow screw 17 does not pass through
Schweißen, sondern durch Schrauben hergestellt. Hierzu liegt die Hohlschraube 17 mit einer gegenüber der Hohlschraube 17 in Figur 1 etwas verlagerten Stützschulter 24 an der dem Schutzrohr 13 zugekehrten Unterseite des Kragens 121 am Sensorgehäuse 12 an, und die feste Verbindung zwischen Hohlschraube 17 und Sensorgehäuse 12 ist durch eine auf dem Sensorgehäuse 12, genauer auf dessen Schutzhülse 14 sitzende Gewindehülse 25 hergestellt, die mit einem Außengewinde 26 in einem in der Hohlschraube 17 im Bereich des Montageflansches 20 ausgebildeten Innengewinde 27 verschraubt ist und sich mit ihrer einen ringförmigen Stirnseite auf der vom Schutzrohr 13 abgekehrten Oberseite des Kragens 121 abstützt. Für die Montage besitzt die Gewindehülse 25 an ihrer anderen Stirnseite Aussparungen 28 zum Einsetzen eines Montagewerkzeugs. In der Darstellung in Figur 2 sind zwei diametrale Aussparungen 28 zu sehen. Welding, but made by screws. For this purpose, the hollow screw 17 is located with respect to the hollow screw 17 in Figure 1 slightly displaced support shoulder 24 on the protective tube 13 facing underside of the collar 121 on the sensor housing 12, and the fixed connection between the hollow screw 17 and sensor housing 12 by a on the sensor housing 12th , more precisely on the protective sleeve 14 seated threaded sleeve 25 made, which is bolted to an external thread 26 formed in the hollow screw 17 in the mounting flange 20 female thread 27 and is supported with its one annular end face on the side facing away from the protective tube 13 top of the collar 121 , For mounting the threaded sleeve 25 has on its other end side recesses 28 for inserting a mounting tool. In the illustration in Figure 2, two diametrical recesses 28 can be seen.
Zur Herstellung der Gasdichtheit zwischen Gewindehülse 25 und Sensorgehäuse 12 ist zwischen dem Kragen 121 am Sensorgehäuse und der dem Kragen 121To produce the gas-tightness between threaded sleeve 25 and sensor housing 12 is between the collar 121 on the sensor housing and the collar 121st
12 zugekehrten Stirnseite der Gewindehülse 25 eine Ausgleichsscheibe 29 an- geordnet, wie sie in Figur 2 im Schnitt und in Figur 3 in perspektivischer Darstellung zu sehen ist. Die Ausgleichsscheibe 29 ist vorzugsweise aus Kupfer und wird beim Verschrauben der Gewindehülse 25 in der Hohlschraube 17 gegen den Kragen 121 gepresst. Die Abdichtung zwischen Hohlschraube 17 und Auf- nahmestutzen 1 1 erfolgt in gleicher Weise wie bei dem Ausführungsbeispiel in12 facing end side of the threaded sleeve 25 a shim 29 ordered, as can be seen in Figure 2 in section and in Figure 3 in perspective view. The shim 29 is preferably made of copper and is pressed when screwing the threaded sleeve 25 in the hollow screw 17 against the collar 121. The seal between the hollow screw 17 and receiving socket 1 1 takes place in the same manner as in the embodiment in
Figur 1 durch den vormontierten, in der Ringnut 22 gehaltenen Dichtungsring 23, der zwischen dem Montageflansch 20 am Gehäusekörper 15 und der Stirnseite 1 1 1 des Aufnahmestutzens 1 1 zusammengepresst wird. Figure 1 by the pre-assembled, held in the annular groove 22 sealing ring 23 which is compressed between the mounting flange 20 on the housing body 15 and the end face 1 1 1 of the receiving nozzle 1 1.
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011800382138A CN103026217A (en) | 2010-08-04 | 2011-06-14 | Gas sensor |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201010038901 DE102010038901A1 (en) | 2010-08-04 | 2010-08-04 | gas sensor |
| DE102010038901.3 | 2010-08-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012016742A1 true WO2012016742A1 (en) | 2012-02-09 |
Family
ID=44343182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2011/059795 Ceased WO2012016742A1 (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 |
|---|---|---|---|---|
| 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 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6641877B2 (en) * | 2015-03-24 | 2020-02-05 | 株式会社デンソー | Gas sensor and exhaust pipe to which gas sensor is attached |
| 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 |
| DE102024115444A1 (en) * | 2024-06-04 | 2025-12-04 | Everllence Se | Adapter device for mounting an exhaust gas sensor on an exhaust pipe of an internal combustion engine and internal combustion engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4121989A (en) * | 1977-03-07 | 1978-10-24 | Uop Inc. | Method of making oxygen sensor |
| 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 |
| DE19739435A1 (en) | 1997-09-09 | 1999-03-11 | Bosch Gmbh Robert | Sensor |
| US20030019751A1 (en) | 2001-07-06 | 2003-01-30 | Helmut Weyl | Gas sensor |
| 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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1545493A (en) * | 1975-06-04 | 1979-05-10 | Redpath Dorman Long Ltd | Supports for maritime structures |
-
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 not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4121989A (en) * | 1977-03-07 | 1978-10-24 | Uop Inc. | Method of making oxygen sensor |
| 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 |
| DE19739435A1 (en) | 1997-09-09 | 1999-03-11 | Bosch Gmbh Robert | Sensor |
| US20030019751A1 (en) | 2001-07-06 | 2003-01-30 | Helmut Weyl | Gas sensor |
| 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 (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102010038901A1 (en) | 2012-02-09 |
| CN103026217A (en) | 2013-04-03 |
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