GB2546822A - Exhaust gas temperature sensor with an antirotation element - Google Patents

Exhaust gas temperature sensor with an antirotation element Download PDF

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Publication number
GB2546822A
GB2546822A GB1601817.8A GB201601817A GB2546822A GB 2546822 A GB2546822 A GB 2546822A GB 201601817 A GB201601817 A GB 201601817A GB 2546822 A GB2546822 A GB 2546822A
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GB
United Kingdom
Prior art keywords
sensor
egt
boss
antirotation
exhaust gas
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.)
Withdrawn
Application number
GB1601817.8A
Other versions
GB201601817D0 (en
Inventor
Ormando Alessandro
Cuzzoni Bruno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GM Global Technology Operations LLC
Original Assignee
GM Global Technology Operations LLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GM Global Technology Operations LLC filed Critical GM Global Technology Operations LLC
Priority to GB1601817.8A priority Critical patent/GB2546822A/en
Publication of GB201601817D0 publication Critical patent/GB201601817D0/en
Publication of GB2546822A publication Critical patent/GB2546822A/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K13/00—Arrangement in connection with combustion air intake or gas exhaust of propulsion units
    • B60K13/04—Arrangement in connection with combustion air intake or gas exhaust of propulsion units concerning exhaust
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
    • 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
    • G01K13/024—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow of moving gases
    • 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

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

An exhaust gas temperature (EGT) sensor 520 comprising an anti-rotation element 510, the anti-rotation element 510 comprising a C-shaped fixture portion 517 constrained to a body of the EGT sensor 520, where opposite to the gap in the C-shaped portion 517, a protruding element 513 is provided, wherein the protruding armature 513 extends in a substantially perpendicular direction with respect to a plane containing the C-shaped portion 517 for a length that is greater than a thickness of the C-shaped portion 517. A screw cap boss 530 for receiving an EGT sensor 520 has an internally threaded aperture 537 to engage with a threaded part of the EGT sensor 520. The boss 530 has an abutment surface and an annular portion, with a longitudinal cavity on an internal surface which may extend from the abutment surface in an opposite direction to the internal thread 537. The diameter of the annular portion may be less than the diameter of the threaded part 537. The assembly 500 of the boss 530, the EGT sensor 520 and the rotation preventing element 510 allows for the anti-rotation element 510 to protrude into the cavity of the annular portion.

Description

EXHAUST GAS TEMPERATURE SENSOR WITH AN ANTIROTATION ELEMENT TECHNICAL FIELD
The technical field relates to an exhaust gas temperature (EGT) sensor, and in particular to the antirotation system used to avoid incorrect installation of the EGT sensor.
BACKGROUND
Exhaust gas temperature (EGT) sensors are used to measure exhaust gas temperature in different positions of an automotive aftertreatment system, for example upstream of a Diesel Oxidation Catalyst (DOC), upstream and/or downstream a Diesel Particulate Filter (DPF) and upstream of a Selective Catalytic Reduction (SCR) device, depending on the automotive system architecture.
For installing such EGT sensors, an antirotation system is required to avoid incorrect sensor installation.
Current antirotation system comprises an antirotation element having a C-shaped portion suitable to engage to the body of the EGT sensor, where opposite to the C-shaped portion, a protuberance extending in the same plane of the C-shaped portion is provided.
The protuberance is designed to engage in a longitudinal cavity provided along the thread of a threaded boss to block the rotation of the EGT sensor.
This known antirotation system has several disadvantages, such as a high cost for producing the threaded boss due to the necessity to control the length of the cavity for the antirotation element, which is especially expensive for cast iron parts provided on the exhaust manifold of the engine.
Also, since the longitudinal cavity is provided along the thread of the threaded boss, a partial loss of the thread engagement occurs that may cause a sensor loss.
Finally, complicated processing may be needed due to a required precise dimension of the longitudinal cavity to avoid risk of gas leak due to a not perfect matching between sensor and threaded boss.
The objective of an embodiment disclosed is to provide an antirotation assembly for an exhaust gas temperature (EGT) sensor that allows a sensible cost reduction while, at the same time, avoiding risk of gas leak after installation of the sensor.
This and other objects are achieved by the embodiments of the invention as defined in the independent claims. The dependent claims include preferred and/or advantageous aspects of said embodiments.
SUMMARY
An embodiment of the disclosure provides an exhaust gas temperature (EGT) sensor comprising an antirotation element, the antirotation element comprising a C-shaped portion constrained (engaged) to a body of the EGT sensor, where opposite to the C-shaped portion, a protruding element is provided, wherein the protruding element extends in a substantially perpendicular direction with respect to a plane containing the C-shaped portion for a length that is greater than a thickness of the C-shaped portion.
An advantage of this embodiment is that it avoids risk of gas leak due to a not perfect matching between sensor and threaded boss.
An advantage of this embodiment is that a sufficient length of the protruding element is provided in order to lock the rotation of the body of the EGT sensor once it is mounted into position.
According to an embodiment, the antirotation element is placed substantially in correspondence of an abutment surface of the EGT sensor facing towards an extremity of the EGT sensor. Advantageously, by providing the antirotation element below the abutment surface of the EGT sensor that is intended to reach, in use, a contact position with a correspondent abutment surface of a boss inside which the exhaust temperature sensor is installed, the risk of exhaust gas leak can be effectively avoided.
The invention further provides for a boss for receiving an exhaust gas temperature (EGT) sensor (520), the boss having an internal threaded hole suitable to engage with a threaded portion of an exhaust gas temperature (EGT) sensor, the boss having an abutment surface interposed between the internal threaded hole and an annular portion, wherein the boss comprises a longitudinal cavity provided on an internal surface of the annular portion along an axial direction thereof.
An advantage of this embodiment is that, by providing a longitudinal cavity in a non-threaded portion the internal threaded hole suitable, such solution has no significant impact on thread engagement with the threaded portion of an exhaust gas temperature (EGT) sensor.
Furthermore, the above solution allows for an easier boss processing because there is no need for a precise length dimension for the antirotation element.
According to still another embodiment, the longitudinal cavity of the annular portion extends away from the abutment surface in an opposite direction with respect to the internal threaded hole of the boss.
An advantage of this embodiment is that the above feature allows the protruding element of the antirotation element to extend inside the longitudinal cavity of the annular portion of the boss in such a way that an abutment surface of the EGT sensor abuts against the abutment surface of the boss improving safety against risk of gas leak.
According to another embodiment, the annular portion has an internal diameter that is smaller than an internal diameter of the threaded portion.
An advantage of this embodiment is that the annular portion provides a surface on which the antirotation element can be blocked.
The invention further provides for an antirotation assembly comprising an exhaust gas temperature sensor having an antirotation element and a boss, the antirotation element of the EGT sensor comprising a C-shaped portion constrained to a body of the EGT sensor, where opposite to the C-shaped portion, a protruding element is provided, wherein the protruding element extends in a substantially perpendicular direction with respect to a plane containing the C-shaped portion for a length that is greater than a thickness of the C-shaped portion, the boss having an internal threaded hole suitable to engage with a threaded portion of the exhaust gas temperature (EGT) sensor, the boss having an abutment surface interposed between the internal threaded hole and an annular portion, wherein the boss comprises a longitudinal cavity provided on an internal surface of the annular portion along an axial direction thereof, wherein a protruding element of the antirotation element is engaged inside a longitudinal cavity of an annular portion of the boss.
An advantage of this embodiment is that it avoids the risk of exhaust gas leak, allowing for a perfect matching between the sensor body and the boss.
According to another embodiment, the length of the protruding element is greater than a threaded length of the boss.
According to another embodiment, an abutment surface of the EGT sensor abuts against the abutment surface of the boss. Also in this case, the risk of exhaust gas leak, allowing for a perfect matching between the sensor body and the boss, can be advantageously prevented.
An embodiment of the disclosure provides an antirotation element for an exhaust gas temperature (EGT) sensor, the antirotation element comprising a C-shaped portion suitable to engage (e.g. configured to be constrained) to a body of the EGT sensor, where opposite to the C-shaped portion, a protruding element is provided, wherein the protruding element extends in a substantially perpendicular direction with respect to a plane containing the C-shaped portion for a length that Is greater than a thickness of the C-shaped portion.
An advantage of this embodiment is that it avoids risk of gas leak due to a not perfect matching between sensor and threaded boss.
An advantage of this embodiment is that a sufficient length of the protruding element is provided in order to lock the rotation of the body of the EGT sensor once it is mounted into position.
BRIEF DESCRIPTION OF THE DRAWINGS
The various embodiments will now be described, by way of example, with reference to the accompanying drawings, wherein like numerals denote like elements, and in which:
Figure 1 shows an automotive system;
Figure 2 is a cross-section of an internal combustion engine belonging to the automotive system of figure 1;
Figure 3 shows an assembly comprising the exhaust gas temperature (EGT) sensor provided with an antirotation element and a boss for receiving the EGT sensor according to an embodiment of the invention;
Figure 4 shows an antirotation element according to an embodiment of the invention;
Figure 5 shows a sectional view of a boss for engaging the antirotation element according to an embodiment of the invention;
Figure 6 shows a bottom view of an antirotation element engaged in a boss according to an embodiment of the invention; and
Figure 7 shows an exhaust gas temperature (EGT) sensor provided with an antirotation element according to an embodiment of the invention.
DETAILED DESCRIPTION
Exemplary embodiments will now be described with reference to the enclosed drawings without intent to limit application and uses.
Some embodiments may include an automotive system 100 for powering an automotive vehicle as shown in Figures 1 and 2, that includes an internal combustion engine (ICE) 110 having an engine block 120 defining at least one cylinder 125 having a piston 140 coupled to rotate a crankshaft 145. A cylinder head 130 cooperates with the piston 140 to define a combustion chamber 150. A fuel and air mixture (not shown) is disposed in the combustion chamber 150 and ignited, resulting in hot expanding exhaust gasses causing reciprocal movement of the piston 140. The fuel is provided by at least one fuel injector 160 and the air through at least one intake port 210. The fuel is provided at high pressure to the fuel injector 160 from a fuel rail 170 in fluid communication with a high pressure fuel pump 180 that increases the pressure of the fuel received from a fuel source 190. Each of the cylinders 125 has at least two valves, actuated by a camshaft 135 rotating in time with the crankshaft 145. The valves selectively allow air into the combustion chamber 150 from the port 210 and alternately allow exhaust gases to exit through a port 220. In some examples, a cam phaser 155 may selectively vary the timing between the camshaft 135 and the crankshaft 145.
The air may be distributed to the air intake port(s) 210 through an intake manifold 200. An air intake duct 205 may provide air from the ambient environment to the intake manifold 200.
In other embodiments, a throttle body 330 may be provided to regulate the flow of air into the manifold 200.
In still other embodiments, a forced air system such as a turbocharger 230, having a compressor 240 rotationaliy coupled to a turbine 250, may be provided. Rotation of the compressor 240 increases the pressure and temperature of the air in the duct 205 and manifold 200. A charge air cooler 260 disposed in the duct 205 may reduce the temperature of the air. The turbine 250 rotates by receiving exhaust gases from an exhaust manifold 225 that directs exhaust gases from the exhaust ports 220 and through a series of vanes prior to expansion through the turbine 250. The exhaust gases exit the turbine 250 and are directed into an exhaust system 270. This example shows a variable geometry turbine (VGT) with a VGT actuator 290 arranged to move a rack of vanes in different positions, namely from a fully closed position to a fully open position, to alter the flow of the exhaust gases through the turbine 250. In other embodiments, the turbocharger 230 may be fixed geometry and/or include a waste gate.
The exhaust gases of the engine are directed into an exhaust system 270.
The exhaust system 270 may include an exhaust pipe 275 having one or more exhaust aftertreatment devices 280. The aftertreatment devices may be any device configured to change the composition of the exhaust gases. Some examples of aftertreatment devices 280 include, but are not limited to, catalytic converters (two and three way), oxidation catalysts, lean NOx traps, hydrocarbon adsorbers, selective catalytic reduction (SCR) systems, and particulate filters.
Other embodiments may include an exhaust gas recirculation (EGR) system 300 coupled between the exhaust manifold 225 and the intake manifold 200. The EGR system 300 may include an EGR cooler 310 to reduce the temperature of the exhaust gases in the EGR system 300. An EGR valve 320 regulates a flow of exhaust gases in the EGR system 300.
The automotive system 100 may further include an electronic control unit (ECU) 450 in communication with one or more sensors and/or devices associated with the ICE 110 and with a memory system, or data carrier and an interface bus. The ECU 450 may receive input signals from various sensors configured to generate the signals in proportion to various physical parameters associated with the ICE 110. The sensors include, but are not limited to, a mass airflow and temperature sensor 340, a manifold pressure and temperature sensor 350, a combustion pressure sensor that may be integral within glow plugs 360, coolant and oil temperature and level sensors 380, a fuel rail pressure sensor 400, a cam position sensor 410, a crank position sensor 420, exhaust pressure and temperature sensors 430, an EGR temperature sensor 440, and an accelerator pedal 447 position sensor 445.
In general, in the following description, an exemplary exhaust gas temperature (EGT) sensor to which the antirotation assembly according to the various embodiment of the invention is applied, will be indicated with the reference numeral 520.
Furthermore, the ECU 450 may generate output signals to various control devices that are arranged to control the operation of the ICE 110, including, but not limited to, the fuel injectors 160, the throttle body 330, the EGR Valve 320, a Variable Geometry Turbine (VGT) actuator 290, and the cam phaser 155. Note, dashed lines are used to indicate communication between the ECU 450 and the various sensors and devices, but some are omitted for clarity.
Figure 3 shows an exploded view of an antirotation assembly 500 comprising an exhaust gas temperature (EGT) sensor 520 provided with an antirotation element 510 and a boss 530 according to an embodiment of the invention.
Figure 4 shows an antirotation element 510 according to an embodiment of the invention.
The antirotation element 510 comprises a C-shaped portion 517 suitable to engage to a body of an EGT sensor 520.
The C-shaped portion 517 may be made of a deformable material in order to allow it to engage to a portion of the body of the EGT sensor 520.
Opposite to the C-shaped portion 517, a protruding element 513 is provided, wherein the protruding element 513 extends in a substantially perpendicular direction with respect to a plane containing the C-shaped portion 517 for a length that is greater than a thickness of the C-shaped portion 517.
In particular, the length of the protruding element 513 may be greater than the thickness of the C-shaped portion and the threaded length of the boss.
The antirotation element 510 is suitable to engage with boss 530.
Figure 5 shows a sectional view of boss 530 for engaging the antirotation element 510.
The boss 530 has an internal threaded hole 537 suitable to engage with a threaded portion 507 of an exhaust gas temperature (EGT) sensor 520.
The boss 530 is also provided with an annular portion 532 proximate to the internal threaded hole 537, wherein the boss 530 comprises a longitudinal cavity 535 provided on an internal surface 538 of the annular portion 532 along an axial direction thereof.
The annular portion 532 of boss 530 has an internal diameter that is smaller than an internal diameter of the threaded portion 507.
Furthermore, the boss 530 is provided with an abutment surface 540 interposed between the internal threaded hole 537 and the annular portion 532 in such a way that the longitudinal cavity 535 provided on the internal surface 538 of the annular portion 532 extends along an axial direction thereof.
In particular, the longitudinal cavity 535 of the annular portion 532 extends away from the abutment surface 540 in an opposite direction with respect to the internal threaded hole 537 of the boss 530.
Figure 6 shows a bottom view of the antirotation element 510 engaged in the boss 530.
In particular, the protruding element 513 of the antirotation element 510 is engaged inside the longitudinal cavity 535 of the annular portion 532 of the boss 530.
Finally, Figure 7 shows a view of the exhaust gas temperature (EGT) sensor 520 provided with the antirotation element 510.
Figure 7 also illustrates the presence of an abutment surface 545 of the EGT sensor 520.
In order to mount in position the exhaust gas temperature (EGT) sensor 520, the antirotation element 510 is engaged (constrained) to a body of the EGT sensor 520, by insertion of a portion of the body of the exhaust gas temperature (EGT) sensor 520 into the C-shaped portion 517, while the protruding element 513 extends in a substantially perpendicular direction along the body of the EGT sensor 520.
The exhaust gas temperature (EGT) sensor 520 having the antirotation element 510 constrained thereto is then inserted into the internal threaded hole 537 of boss 530 until the protruding element 513 is in contact with the annular portion 532.
Then the exhaust gas temperature (EGT) sensor 520 is rotated until the protruding element 513 of the antirotation element 510 is aligned with the longitudinal cavity 535 provided on the internal surface 538 of the annular portion 532.
In such position, the exhaust gas temperature (EGT) sensor 520 is pushed in an axial direction with respect to an axis of the boss in such a way that the protruding element 513 of the antirotation element 510 is inserted inside the longitudinal cavity 535 provided on the internal surface 538 of the annular portion 532.
Finally, a threaded portion 507 of an exhaust gas temperature (EGT) sensor 520 is engaged within the internal threaded hole 537 to block the exhaust gas temperature (EGT) sensor 520 into position.
In the final position, the abutment surface 545 of the EGT sensor 520 abuts against the abutment surface 540 of the boss 530 improving safety against risk of gas leak.
Furthermore, the antirotation element 510 is placed in correspondence of the abutment surface 545 of the EGT sensor 520 facing towards an extremity 550 of the EGT sensor 520.
While at least one exemplary embodiment has been presented in the foregoing summary and detailed description, it should be appreciated that a vast number of variations exist. It should also be appreciated that the exemplary embodiment or exemplary embodiments are only examples, and are not intended to limit the scope, applicability, or configuration in any way. Rather, the foregoing summary and detailed description will provide those skilled in the art with a convenient road map for implementing at least one exemplary embodiment, it being understood that various changes may be made in the function and arrangement of elements described in an exemplary embodiment without departing from the scope as set forth in the appended claims and their legal equivalents.
REFERENCE NUMBERS 100 automotive system 105 vehicle 110 internal combustion engine (ICE) 120 engine block 125 cylinder 130 cylinder head 135 camshaft 140 piston 145 crankshaft 150 combustion chamber 155 cam phaser 160 fuel injector 170 fuel rail 180 fuel pump 190 fuel source 200 intake manifold 205 air intake duct 210 intake air port 220 exhaust gas port 225 exhaust manifold 230 high pressure turbocharger 240 high pressure compressor 250 high pressure turbine 260 charge air cooler 270 exhaust system 275 exhaust pipe 280 exhaust aftertreatment device 290 VGT actuator 295 rack of vanes of the turbine 300 EGR system 310 EGR cooler 320 EGR valve 330 throttle body 340 mass airflow and temperature sensor 350 manifold pressure and temperature sensor 400 fuel rail pressure sensor 410 cam position sensor 420 crank position sensor 430 exhaust pressure and temperature sensor 445 accelerator pedal position sensor 447 accelerator pedal 450 electronic control unit (ECU) 460 data carrier 470 sliding cam mechanization system 480 cam phaser 500 antirotation assembly 517 threaded portion of EGT sensor 510 antirotation element 517 C-shaped portion 520 EGT sensor 530 boss 532 annular portion of boss 535 boss cavity 537 threaded hole of boss 538 internal surface of annular portion 540 abutment surface of boss 545 abutment surface of sensor 550 extremity of sensor

Claims (9)

1. An exhaust gas temperature (EGT) sensor (520) comprising an antirotation element (510), the antirotation element (510) comprising a C-shaped portion (517) constrained to a body of the EGT sensor (520), where opposite to the C-shaped portion (517), a protruding element (513) is provided, wherein the protruding element (513) extends in a substantially perpendicular direction with respect to a plane containing the C-shaped portion (517) for a length that is greater than a thickness of the C-shaped portion (517).
2. The exhaust gas temperature (EGT) sensor (520) according to claim 1, wherein the antirotation element (510) is placed substantially in correspondence of an abutment surface (545) of the EGT sensor (520) facing towards an extremity (550) of the EGT sensor (520).
3. A boss (530) for receiving an exhaust gas temperature (EGT) sensor (520), the boss having an internal threaded hole (537) suitable to engage with a threaded portion (507) of an exhaust gas temperature (EGT) sensor (520), the boss (530) having an abutment surface (540) interposed between the internal threaded hole (537) and an annular portion (532), wherein the boss (530) comprises a longitudinal cavity (535) provided on an internal surface (538) of the annular portion (532) along an axial direction thereof.
4. The boss (530) according to claim 3, wherein the longitudinal cavity (535) of the annular portion (532) extends away from the abutment surface (540) in an opposite direction with respect to the internal threaded hole (537) of the boss (530).
5. The boss (530) according to claim 3 or 4, wherein the annular portion (532) has an internal diameter that is smaller than an internal diameter of the threaded portion (507).
6. An antirotation assembly (500) comprising the exhaust gas temperature (EGT) sensor (520) having an antirotation element (510) according to claims 1-2 and the boss (530) according to claims 3-5, wherein the protruding element (513) of the antirotation element (510) is engaged inside the longitudinal cavity (535) of the annular portion (532) of the boss (530).
7. The antirotation assembly according to claim 6, wherein the length of the protruding element (513) is greater than a threaded length of the boss (530).
8. The antirotation assembly according to claim 6 or 7, wherein an abutment surface (545) of the EGT sensor (520) abuts against the abutment surface (540) of the boss (530).
9. An antirotation element (510) for an exhaust gas temperature (EGT) sensor (520), the antirotation element (510) comprising a C-shaped portion (517) configured to be constrained to a body of the EGT sensor (520), where opposite to the C-shaped portion (517), a protruding element (513) is provided, wherein the protruding element (513) extends in a substantially perpendicular direction with respect to a plane containing the C-shaped portion (517) for a length that is greater than a thickness of the C-shaped portion (517).
GB1601817.8A 2016-01-29 2016-01-29 Exhaust gas temperature sensor with an antirotation element Withdrawn GB2546822A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1601817.8A GB2546822A (en) 2016-01-29 2016-01-29 Exhaust gas temperature sensor with an antirotation element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1601817.8A GB2546822A (en) 2016-01-29 2016-01-29 Exhaust gas temperature sensor with an antirotation element

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GB201601817D0 GB201601817D0 (en) 2016-03-16
GB2546822A true GB2546822A (en) 2017-08-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113227734A (en) * 2018-11-08 2021-08-06 Sc2N公司 Temperature sensor with anti-rotation stop

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020085617A1 (en) * 2002-01-03 2002-07-04 Mamac Systems, Inc. Thermowell adapter
US20100158758A1 (en) * 2008-12-22 2010-06-24 Caterpillar Inc. Gas Sensor Assembly
US20150377718A1 (en) * 2014-06-28 2015-12-31 Jeffrey Thomas Eichen Apparatus and method for service replacement of damaged exhaust temperature sensor mounting boss

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020085617A1 (en) * 2002-01-03 2002-07-04 Mamac Systems, Inc. Thermowell adapter
US20100158758A1 (en) * 2008-12-22 2010-06-24 Caterpillar Inc. Gas Sensor Assembly
US20150377718A1 (en) * 2014-06-28 2015-12-31 Jeffrey Thomas Eichen Apparatus and method for service replacement of damaged exhaust temperature sensor mounting boss

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113227734A (en) * 2018-11-08 2021-08-06 Sc2N公司 Temperature sensor with anti-rotation stop
US20220011171A1 (en) * 2018-11-08 2022-01-13 Sc2N Temperature sensor with anti-rotation stop

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