DE10229031B3 - Sensor for determining temperature or oxygen and/or nitrogen oxide concentration in I.C. engine exhaust gas has sealing units with a deformable radially protruding bar arranged on the periphery of a housing - Google Patents
Sensor for determining temperature or oxygen and/or nitrogen oxide concentration in I.C. engine exhaust gas has sealing units with a deformable radially protruding bar arranged on the periphery of a housing Download PDFInfo
- Publication number
- DE10229031B3 DE10229031B3 DE2002129031 DE10229031A DE10229031B3 DE 10229031 B3 DE10229031 B3 DE 10229031B3 DE 2002129031 DE2002129031 DE 2002129031 DE 10229031 A DE10229031 A DE 10229031A DE 10229031 B3 DE10229031 B3 DE 10229031B3
- Authority
- DE
- Germany
- Prior art keywords
- housing
- sensor
- web
- sensor according
- housing section
- 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
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
- G01N27/4077—Means for protecting the electrolyte or the electrodes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/008—Mounting or arrangement of exhaust sensors in or on exhaust apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
- F01N13/1827—Sealings specially adapted for exhaust systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
- F01N2560/025—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting O2, e.g. lambda sensors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
- F01N2560/026—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting NOx
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/06—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a temperature sensor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K2205/00—Application of thermometers in motors, e.g. of a vehicle
- G01K2205/04—Application of thermometers in motors, e.g. of a vehicle for measuring exhaust gas temperature
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Molecular Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
Description
Stand der TechnikState of the art
Die Erfindung geht aus von einem Meßfühler zur Bestimmung einer physikalischen Eigenschaft eines Meßgases, insbesondere zur Bestimmung der Temperatur oder der Sauerstoff- und/oder Stickoxidkonzentration im Abgas einer Brennkraftmaschine eines Kraftfahrzeugs, nach dem Oberbegriff des Anspruchs 1.The invention is based on one Sensor for Determination of a physical property of a measuring gas, especially for determining the temperature or the oxygen and / or nitrogen oxide concentration in the exhaust gas of an internal combustion engine of a motor vehicle, according to the preamble of claim 1.
Ein bekannter Meßfühler zur Bestimmung des Sauerstoffgehalts
oder der Sauerstoffkonzentration in Abgasen von Brennkraftmaschinen
(
Vorteile der ErfindungAdvantages of invention
Der erfindungsgemäße Meßfühler mit den Merkmalen des Anspruchs 1 hat den Vorteil, daß die Dichtwirkung und der Lösungsschutz am Meßfühler durch eine entsprechende Gestaltung des Gehäuses ohne zusätzlichen Dichtring realisiert ist. Dies läßt in der Fertigungsstraße die Montagestation für den Dichtring entfallen und verringert somit die Fertigungszeit.The sensor according to the invention with the features of Claim 1 has the advantage that the sealing effect and solution protection on the sensor an appropriate design of the housing without additional Sealing ring is realized. This leaves in the production line the assembly station for the sealing ring is eliminated and thus reduces the manufacturing time.
Der eine sich auf die Meßfühler-Aufnahme aufpressende Dichtlippe bildende, mit dem Gehäuse einstückige, flanschartige Steg eröffnet zusätzlich die Möglichkeit, durch ein konstruktiv vorgegebenes Maß beim Einbau des Meßfühlers in die Meßfühler-Aufnahme eine gewünschte Drehstellung des Gehäuses bezüglich der Meßfühler-Aufnahme und damit eine gewünschte Drehstellung eines im Gehäuse integrierten Sensorelements bezüglich des Meßgasstroms zwangsweise zu erhalten, ohne daß eine Montagevorschrift eingehalten werden muß.The one that presses onto the sensor receptacle Sealing lip-forming, flange-like with the housing Footbridge opened additionally the possibility, by a dimension that is given by the design when installing the sensor in the sensor receptacle a desired one Rotary position of the housing in terms of the sensor receptacle and thus a desired one Rotational position of an integrated in the housing Sensor element regarding of the sample gas flow to be obtained without complying with an assembly instruction must become.
Hierzu ist gemäß einer bevorzugten Ausführungsform der Erfindung einerseits der axialen Verformungsweg des Stegs begrenzt, indem der Steg um einen kleinen spitzen Winkel gegenüber einer rechtwinklig zur Gehäuseachse ausgerichteten Ebene zur Einsetzrichtung des Gehäuses hin angestellt ist. Andererseits weisen die Mittel zum Festlegen des Gehäuses in der Meßfühler-Aufnahme ein Außengewinde auf und der Steg ist an dem in Einsetzrichtung hinteren Ende des Gewindes einstückig aus dem Gehäuse ausgeformt. Das Außengewinde hat einen zur Einbaulage eines Sensorelements im Gehäuse lageorientierten Gewindeanstich, und der Anstellwinkel des Stegs ist so bemessen, daß beim Einschrauben des Gehäuses in die Meßfühler-Aufnahme mittels eines auf das Gehäuse aufgebrachten Drehmoments das Gehäuse nach Aufheben der Anstellung des Stegs (Anstellwinkel gleich Null) eine gewünschte Drehlage bezüglich der Meßfühler-Aufnahme einnimmt. Diese Drehlage des Gehäuses wirkt wie ein Anschlag, da zum Weiterdrehen des Gehäuses ein extrem hohes Drehmoment aufgebracht werden müßte, so daß durch einfaches Anziehen des Gehäuses in der Meßfühler-Aufnahme bis zu dem merkbaren Anschlag die gewünschte Drehwinkellage des Gehäuses zuverlässig eingestellt wird.This is according to a preferred embodiment the invention on the one hand limits the axial deformation path of the web, by making the bridge a small acute angle from a right angle to the housing axis aligned level to the direction of insertion of the housing is employed. on the other hand have the means for fixing the housing in the sensor receptacle an external thread on and the web is at the rear end in the direction of insertion One-piece thread out of the housing formed. The external thread has a position-oriented for the installation position of a sensor element in the housing Tapping, and the angle of attack of the web is dimensioned that at Screw in the housing in the sensor receptacle by means of one on the housing applied torque the housing after canceling the employment of the web (angle of attack equal to zero) a desired rotational position with respect to the Sensor recording occupies. This rotational position of the housing acts like a stop, because an extreme to continue turning the housing high torque would have to be applied, so that by simply tightening of the housing in the sensor receptacle the desired angular position of the housing is reliably set up to the noticeable stop becomes.
Durch die in den weiteren Ansprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Anspruch 1 angegebenen Meßfühlers möglich.By the measures listed in the other claims are advantageous developments and improvements in the claim 1 specified sensor possible.
Zeichnungdrawing
Die Erfindung ist anhand von in der Zeichnung dargestellten Ausführungsbeispielen in der nachfolgenden Beschreibung näher erläutert. Es zeigen:The invention is based on in Exemplary embodiments shown in the drawing explained in more detail in the following description. Show it:
Beschreibung der Ausführungsbeispieledescription of the embodiments
Der in
Zur Montage des Meßfühlers ist
das Gehäuse
Die Meßgasleitung
Zur gasdichten Abdichtung der Aufnahmeöffnung
Das Gehäuse
Bei dem Ausführungsbeispiel der
Zur Beeinflussung der Federelastizität des Stegs
Für
die genaue Meßfunktion
des Meßfühlers ist
es erforderlich, daß der
in den Meßgasstrom
hineinragende meßgasseitige
Abschnitt
Nach Durchführen des Gehäuses
Durch das Aufpressen des Stegs
Der Meßfühler ist nicht auf das beschriebene Ausführungsbeispiel einer Lambdasonde beschränkt. Bei entsprechender Ausgestaltung des Sensorelements kann er auch zur Messung der Temperatur des Meßgases oder zur Bestimmung einer Stickoxidkonzentration im Meßgas eingesetzt werden. Das Sensorelement kann anstelle eines planaren Aufbaus auch eine sog. "Finger"-Form aufweisen. Anstelle eines Schlüsselsechskants kann beispielsweise ein Schlüsseldrei- oder -vierkant vorgesehen werden.The sensor is not based on the described embodiment limited to a lambda sensor. With a corresponding design of the sensor element, it can also for measuring the temperature of the sample gas or for determination a nitrogen oxide concentration in the sample gas can be used. The Instead of a planar structure, a sensor element can also be a Have a "finger" shape. Instead of a key hexagon, for example a key triangle or square is provided become.
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002129031 DE10229031B3 (en) | 2002-06-28 | 2002-06-28 | Sensor for determining temperature or oxygen and/or nitrogen oxide concentration in I.C. engine exhaust gas has sealing units with a deformable radially protruding bar arranged on the periphery of a housing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002129031 DE10229031B3 (en) | 2002-06-28 | 2002-06-28 | Sensor for determining temperature or oxygen and/or nitrogen oxide concentration in I.C. engine exhaust gas has sealing units with a deformable radially protruding bar arranged on the periphery of a housing |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10229031B3 true DE10229031B3 (en) | 2004-03-11 |
Family
ID=31501700
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2002129031 Expired - Fee Related DE10229031B3 (en) | 2002-06-28 | 2002-06-28 | Sensor for determining temperature or oxygen and/or nitrogen oxide concentration in I.C. engine exhaust gas has sealing units with a deformable radially protruding bar arranged on the periphery of a housing |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE10229031B3 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007040506A1 (en) | 2007-08-28 | 2009-03-05 | Robert Bosch Gmbh | Gas sensor i.e. lambda sensor, for determining e.g. oxygen concentration, of exhaust gas in internal combustion engine of motor vehicle, has sealing surface formed by sealing lip, which is formed at flange and is mechanically deformable |
DE102010031656A1 (en) | 2010-07-22 | 2012-01-26 | Robert Bosch Gmbh | Device for installing a measuring sensor |
WO2014139802A1 (en) * | 2013-03-12 | 2014-09-18 | Robert Bosch Gmbh | Special seal geometry for exhaust gas sensors for producing high leak tightness with respect to the measurement chamber |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4126378A1 (en) * | 1990-10-26 | 1992-04-30 | Bosch Gmbh Robert | Gas measuring sensor for oxygen content in exhaust gases - has contact portion support and plug counterwall, whose front sides face large sensor surface |
DE4312506A1 (en) * | 1993-04-16 | 1994-10-20 | Bosch Gmbh Robert | Electrochemical oxygen sensor |
-
2002
- 2002-06-28 DE DE2002129031 patent/DE10229031B3/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4126378A1 (en) * | 1990-10-26 | 1992-04-30 | Bosch Gmbh Robert | Gas measuring sensor for oxygen content in exhaust gases - has contact portion support and plug counterwall, whose front sides face large sensor surface |
DE4312506A1 (en) * | 1993-04-16 | 1994-10-20 | Bosch Gmbh Robert | Electrochemical oxygen sensor |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007040506A1 (en) | 2007-08-28 | 2009-03-05 | Robert Bosch Gmbh | Gas sensor i.e. lambda sensor, for determining e.g. oxygen concentration, of exhaust gas in internal combustion engine of motor vehicle, has sealing surface formed by sealing lip, which is formed at flange and is mechanically deformable |
DE102010031656A1 (en) | 2010-07-22 | 2012-01-26 | Robert Bosch Gmbh | Device for installing a measuring sensor |
WO2012010379A1 (en) | 2010-07-22 | 2012-01-26 | Robert Bosch Gmbh | Connecting ring having an external and internal thread for installing a measuring sensor in a hollow receptacle |
WO2014139802A1 (en) * | 2013-03-12 | 2014-09-18 | Robert Bosch Gmbh | Special seal geometry for exhaust gas sensors for producing high leak tightness with respect to the measurement chamber |
US10024432B2 (en) | 2013-03-12 | 2018-07-17 | Robert Bosch Gmbh | Special seal geometry for exhaust gas sensors for producing high leak tightness with respect to the measurement chamber |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8100 | Publication of the examined application without publication of unexamined application | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |