WO2012089960A1 - Dispositif de mesure de température pour conduite de gaz reliée à un moteur thermique de véhicule automobile, moteur thermique et véhicule équipés dudit dispositif - Google Patents
Dispositif de mesure de température pour conduite de gaz reliée à un moteur thermique de véhicule automobile, moteur thermique et véhicule équipés dudit dispositif Download PDFInfo
- Publication number
- WO2012089960A1 WO2012089960A1 PCT/FR2011/053091 FR2011053091W WO2012089960A1 WO 2012089960 A1 WO2012089960 A1 WO 2012089960A1 FR 2011053091 W FR2011053091 W FR 2011053091W WO 2012089960 A1 WO2012089960 A1 WO 2012089960A1
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- WO
- WIPO (PCT)
- Prior art keywords
- sensor
- head
- measuring device
- temperature
- temperature measuring
- Prior art date
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/10—Testing internal-combustion engines by monitoring exhaust gases or combustion flame
- G01M15/102—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/45—Sensors specially adapted for EGR systems
- F02M26/46—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition
- F02M26/47—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition the characteristics being temperatures, pressures or flow rates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10373—Sensors for intake systems
- F02M35/1038—Sensors for intake systems for temperature or pressure
-
- 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
- G01K2205/02—Application of thermometers in motors, e.g. of a vehicle for measuring inlet gas temperature
Definitions
- the present invention relates to a temperature measuring device for a gas pipe, preferably connected to a motor vehicle heat engine.
- the invention relates to a temperature measuring device for a gas pipe, preferably connected to a motor vehicle heat engine. , as well as a heat engine and a vehicle equipped with such a device.
- conduit means any gas flow pipe, including possibly a non-cylindrical piece as a gas intake manifold.
- the invention is particularly applicable to temperature sensors used in the intake circuit or the gas intake manifold of a motor vehicle engine.
- Such temperature sensors are generally connected to an electronic control unit or computer engine (commonly referred to by the acronym “ECU” for “Engine Control Unit”).
- ECU electronice control unit
- This electronic control unit controls and controls the operation of the engine according to the information transmitted to it by the temperature sensors and other sensors such as, for example, oil level sensors or pressure sensors, this information permitting the implementation of the servo motor.
- the temperature sensors for application in the thermal engines are generally mounted on a plate-shaped support intended to be fixed to the wall of the gas pipe and having, projecting from the plate, a support and protection body of the sensor to be inserted through the wall of the pipe, into a hole provided for this purpose, to allow the sensor to protrude inside the pipe and bathe in the gas stream to be able to measure its temperature.
- the sensors traditionally used are thermistors, that is to say ohmic conductors whose value of the electrical resistance depends on the temperature; the signal measured at the terminals of the thermistor thus makes it possible to know the temperature of the gases to which the thermistor is exposed.
- the thermistors used are frequently thermistors called CTN, acronym for the expression Negative Temperature Coefficient, whose resistance decreases with temperature.
- a sensor support body is generally substantially hollow cylindrical in shape to house the sensor.
- the latter comprises a head from which extend at least two electrical wires connected (directly or indirectly) to the ECU.
- the head of the sensor must be arranged at least partly in the gas flow of the pipe, to be swept by the gases.
- the sensor support body is thus arranged so that the sensor head is at best subjected to the gas flow gas flowing in the pipe.
- the sensor head is subjected to gas pulses inherent in the operation of the engine since they are generated at each gas inlet by one of the engine cylinders. Such pulses cause wear of the sensor; however, there are tens of millions of gas pulses over the life of a vehicle.
- a temperature measuring device having a support body and protection having means for holding the head substantially in the same position relative to the body.
- These holding means comprise a tongue disposed inside the housing of the body, extending along the head and serving as a support for the latter to maintain it under the effect of the drawers.
- the presence of these holding means increases the response time of the sensor for measuring the temperature.
- the proximity and contact between the sensor head and the retaining tab decreases the ability of the head to change temperature in a satisfactory response time; in fact, the greater the mass of the whole of the head and its environment, the greater its thermal inertia and the longer the temperature change times, ie the response times of the sensor, are long.
- the invention relates to a device for measuring temperature in a gas pipe, the device comprising a support body of a temperature sensor, the sensor comprising a head and at least two wires connecting the head to means for acquiring a temperature measurement signal, the support body being arranged to be inserted into an orifice of a wall of the pipe to immerse the sensor head in the gases of the pipe, characterized in that that the support body comprises a lower base, having an upper end surface, in which are formed at least two channels for guiding and holding the wires, arranged to allow mounting of the sensor in the support body and the maintenance of the wire to maintain the sensor head away from the upper end surface of the base.
- the maintenance of the sensor in the body is ensured while ensuring a rapid response time for measuring the temperature; in fact, since the guide and holding channels fulfill a function of keeping the sensor head at a distance from an upper end surface of the base and a function of holding the wires in flexion, the sensor head can be maintained while being free from any means of maintenance.
- the head in the direction of gas flow, the head is completely disengaged from the base of the body; it can thus be immersed in the gas flow and its response time is improved, since its thermal inertia is reduced.
- the gases flowing globally in one direction are held in flexion in said direction of flow of gases.
- the son are held in flexion to prevent them from bending in this direction due to forces parallel to the latter, these forces being imparted by the flow of gases.
- the lower base comprises a channel for passage of the sensor head for its mounting in the support body.
- the passage channel of the sensor head is located between the channels for guiding and holding the wires.
- the lower base extending generally along an axis (the base being for example of generally cylindrical shape) and having at least one side wall (for example substantially cylindrical), it comprises at least two legs longitudinal radial internal projection of said side wall, each channel being formed between a tab and the side wall of the base.
- the lower base extending generally along an axis (the base being for example of generally cylindrical shape) and having at least one side wall (for example substantially cylindrical), it comprises two pairs of legs longitudinally projecting radial inner of said side wall, each pair of legs leaving a channel.
- the tabs of one or other of these embodiments extend longitudinally, that is to say parallel to the overall axis of the base, and project radially out of a groove. inner surface of the side wall of the base.
- the tabs of one or other of these embodiments are shaped to allow passage and guidance of the sensor head for mounting in the support body.
- the gases flowing globally in one direction, the wire and its support tongue are aligned in said direction of flow of gases.
- the tongue can serve to support the wire to prevent bending in the direction of gas flow.
- the support tongue is arranged to constrain the wire bearing against an inner surface of its guide and holding channel.
- the support body comprises an upper armature, for protecting the sensor head, projecting out of the upper end surface of the lower base, providing at least one passage for them. gas and consisting of walls all extending away from the sensor head.
- the sensor head is protected while being well exposed to gases for an effective measurement of their temperature.
- the support body extending generally along an axis, the armature comprises at least one longitudinal pillar protruding from the upper end surface of the lower base and, the gases flowing globally in one direction, a longitudinal pillar of the frame on the upstream side of the head the sensor and the sensor head are aligned in said gas flow direction.
- a distance for example more than one millimeter, must be maintained between the sensor head and the walls of the protective armature to limit the problems of thermal inertia, and to have more space around the head sensor to let the gas through.
- the support body extending generally along an axis, the armature comprises at least one longitudinal pillar protruding from the upper end surface of the lower base and, the gases flowing globally in one direction, no longitudinal pillar of the armature on the upstream side of the sensor head is aligned with the sensor head in said direction of gas flow.
- the pipe is a gas intake pipe of a motor vehicle engine.
- the temperature sensor is a CTN type thermistor.
- the invention also relates to a motor vehicle heat engine connected to at least one pipe comprising a temperature measuring device such as that presented above.
- the invention also relates to a motor vehicle comprising a heat engine connected to at least one pipe comprising a temperature measuring device such as that presented above.
- FIG. 1 shows a schematic perspective view of a first embodiment of the temperature measuring device of the invention
- FIGS. 2 and 3 show respectively a schematic perspective view and a schematic top view of the support and protection body of the temperature measuring device of FIG. 1;
- FIG. 4 represents a schematic perspective view of an alternative embodiment of the temperature measuring device of FIGS. 1 to 3;
- FIG. 5 represents a schematic perspective view of a second embodiment of the temperature measuring device of the invention;
- FIGS. 6 and 7 show respectively a schematic perspective view and a schematic top view of a third embodiment of the temperature measuring device of the invention.
- a device 1, ⁇ , 1 "for measuring temperature comprises a support 2, 2 ', 2" in the form of a plate having, projecting from the plate, a body 3, 3', 3 "support and protection of a temperature sensor 4, 4 ', 4", hereinafter referred to as support body 3, 3', 3 "or body 3, 3 ', 3".
- the body 3, 3 ', 3 is in this case integrally formed of plastic and extends generally along an axis X, X', X" perpendicular to the overall plane of the plate 2, 2 ', 2 "and is in this case cylindrical overall shape.
- the plate-shaped support 2, 2 ', 2 has two pipe-fixing holes (shown only in FIG.
- the orifices 5 being aligned with the support body 3, 3', 3" and arranged to be traversed by fixing elements for fixing the support 2, 2 ', 2 "on a wall of the gas pipe, on an outer surface of this wall, the support 2, 2', 2" is connected to a electrical connector 6 (shown only in FIG. 1) making it possible to transmit the measurement signals of the temperature sensor 4, 4 ', 4 "to acquisition means connected to the electronic control unit of the heat engine, in a conventional manner .
- the support body 3, 3 ', 3 " is intended to be inserted, from the outside, inside the gas pipe through an orifice formed in the wall of the latter, this orifice opening on both sides.
- the sensor 4, 4 ', 4 ", swept by the gases flowing in the pipe, allows the measurement their temperature, conventionally and well known to those skilled in the art.
- the notions of lower or upper are defined as the corresponding parts of the support body 3, 3 ', 3 "in the representations of FIGS. 2, 4, 5 or 6, according to the embodiment described. to position elements with respect to each other and also to define notions of internal and external of the support body 3, 3 ', 3 ", being internal which is close to its axis X, X', X "and external what departs from it.
- the upper side of the body 3, 3 ', 3 correlates to the inner side of the pipe and the lower side of the body 3, 3', 3" corresponds to the outer side of the pipe.
- the temperature sensor 4, 4 ', 4 “comprises a head 7, 7', 7" supported by two wires 8, 8 ', 8 “connected to the head 7, 7', 7" on the same side (lower ) of the latter.
- the head 7, 7 ', 7 “of the sensor 4, 4', 4" is of substantially frustoconical, with a lower side to which are connected the son 8, 8 ', 8 “and an upper side forming its free end, in this case rounded shape, of course, the sensor head 7, 7', 7" could present other forms.
- the two wires 8, 8 ', 8 " are rigid or semi-rigid in order to fill a structural support function with respect to the head 7, 7', 7", the head 7, 7 ', 7 "n' being maintained only by the wires 8, 8 ', 8 ".
- the wires 8 are sized to be sufficiently rigid so as not to twist when the sensor is placed in the gas stream.
- the temperature sensor 4, 4 ', 4 " is, for example, a thermistor of the CTN type
- the head 7, 7', 7" is electrically connected to the two wires 8, 8 ', 8 "which are electrically connected to the connector electrical 6 for the transmission of measurement signals, more precisely in this case, and in known manner, the sensor head 7, 7 ', 7 "is part of an electrical circuit in which the resistance is measured at its terminals, from which the temperature of the gases is deduced, since the resistance of the head 7, 7 ', 7 "depends directly on the temperature at which it is exposed, that is to say, since it is arranged in the gas flow, the temperature of the gases.
- the body 3, 3 ', 3 “comprises a lower base 12, 12', 12” of substantially cylindrical overall shape and for guiding, passing and holding the son 8, 8 ' , 8 "in channels 9, 9 ', 9” formed in this base 12, 12', 12 ".
- the lower base 12, 12 ', 12" has a side wall 12a, 12a', 12a " longitudinally substantially cylindrical around the overall direction X, X ', X "of the body 3, 3', 3", this side wall 12a, 12a ', 12a "being arranged to be inserted into a hole in the gas pipe.
- a seal 13, 13 ', 13 " is disposed at the periphery of the side wall 12a, 12a', 12a" of the base 12, 12 ', 12 ", in a channel provided for this effect, this seal 13, 13 ', 13 "has the function of ensuring the seal between the base 12, 12', 12" and the wall of the orifice formed in the gas pipe, to prevent leakage of gas between them.
- the channels 9, 9 ', 9 " are arranged to allow the guiding of the wires 8, 8', 8" during their assembly in the support body 3, 3 ', 3 ".
- the sensor head 7, 7', 7" can thus be maintained while being disengaged over its entire periphery, since it is maintained at a distance from the upper end surface 17a, 17a ', 17a "of the lower base 12, 12', 12", by the wires 8, 8 ', 8 "held in their respective guide and hold channels 9, 9', 9".
- the support body 3, 3 ', 3 "further comprises an upper armature 15, 15', 15" making it possible to provide mechanical protection for the head 7, 7 ', 7 “of the sensor 4, 4', 4" , especially when installing the support body 3, 3 ', 3 "to the inside of the gas pipe, to avoid contact of the head 7, 7 ', 7 "with this pipe.
- the base 12, 12 ', 12 " is in this case partly hollow, including outside the guide channels 9, 9', 9", to communicate the inside of the pipe with a pressure sensor (not shown) housed in a lower part of the lower base 12, 12 ', 12 ".
- the lower base 12 has a substantially cylindrical side wall 12a and an upper end wall 17 extending substantially transversely to the longitudinal axis X of the base 12.
- the guiding and holding channels 9 are formed in the thickness of the wall 17, in this case drilled longitudinally in the latter.
- a central passage channel 18 for the head 7 of the sensor 4 is also formed between the guide channels 9; this passage channel 18 communicates with the channels 9 to allow the passage of both the head 7 and son 8 connected thereto.
- the central channel 18 has, in section in the plane (Y, Z), a diameter substantially equal to and slightly greater than the maximum diameter of the sensor head 7 in section in this plane (that is to say, the diameter of the sensor head 7 in orthogonal projection on this plane).
- the guide and holding channels 9 are delimited by a substantially U-shaped wall, the base of the U having the shape of a circle whose diameter is substantially equal and slightly greater than the diameter of a wire 8 and the legs of the U allowing the passage of the connecting portion of the wire 8 to the sensor head 7 during assembly.
- the channels 9 allow the guidance of the son during the mounting of the sensor 4 in the body 3 and then hold in position once the editing is done; the diameter of the channels 9 (in this case the diameter of the base of the U whose walls which define them have the shape) is substantially equal, possibly slightly greater than the diameter of the son 8, for a good maintenance of the latter.
- Each channel 9 longitudinally encloses the wire 8 that it maintains, substantially marrying the cylindrical shape of the wire 8. The maintenance is thus exercised over the entire thickness (in the direction of the X axis) of the upper wall 17.
- the channels 9 thus allow the bending of the wires 8 to be maintained, while allowing their displacement and their guidance in the direction of the X axis during the positioning of the sensor 4 in the support body 3.
- the wires 8 are maintained in flexion thanks to their clasping by the channels 9, in this case over the entire thickness of the wall 17.
- the head 7 of the sensor 4 is only held in position by the son 8, the latter being held in bending by the channels 9.
- the rigidity of the son 8 and the length of the channels 9 are arranged so that this maintenance is sufficient to resist the gas pulses to which the sensor head 7 is subjected in the pipe (the latter forming an intake pipe of an internal combustion engine of a motor vehicle).
- the sensor head 7 can thus be kept at a distance from the upper end surface 17a of the upper transverse wall 17 of the base 12, which forms in this case the upper end surface 17a of the base 12.
- the wires 8 have an arcuate portion 20 near the sensor head 7 and extend in their lower portion to this arcuate portion 20, straight and parallel to each other in the guide and holding channels 9.
- the arcuate portions 20 are in this case formed between the head 7 and the guide and holding channels 9. The distance between the threads 8 is thus greater than the diameter of the head 7. The threads 8 touch the edge of the channels 9.
- a recess 21 in the form of a half-disc is formed in the upper wall 17 (the channels 9, 18 for the sensor 4 are formed on one side of the wall 17 and the recess 21 on the other side).
- This recess 21 communicates fluidly with a pressure sensor arranged to measure the pressure of the gases flowing in the pipe, as mentioned above.
- the upper armature 15 comprises a ring 22 supported by three longitudinal pillars 23a, 23b, 23c projecting from the upper end surface 17a of the upper wall 17, on its outer periphery.
- the upper end surface 17a of the upper wall 17 also corresponds to the upper end surface of the side wall 12a of the base 12, this surface 17a forming the upper end surface 17a of the base lower 12.
- the channels 9, 18 for passage of the head 7 and the son 8 of the sensor 4 are situated in the upper wall 17, substantially between two upstream longitudinal pillars 23a, 23b, away from the outer limit of the periphery of the the upper end surface 17a.
- the channels 9, 18 extend from the inside of the support body 3 with respect to these pillars 23a, 23b, the two pillars 23a, 23b being aligned, in sectional view in the plane (Y, Z), in the direction parallel to the Y axis, that is to say perpendicular to the direction Z of gas flow; thus, the head 7 of the sensor 4 is directly subjected to the flow of gas since it is not aligned with any upstream pillar 23a, 23b in the direction Z of gas flow; it is aligned with the downstream pillar 23c but it does not matter for its exposure to the gas flow.
- the head 7 of the sensor 4 is located in a volume 24 of the support body 3 delimited laterally by the three longitudinal pillars 23a, 23b, 23c, on an upper part by the ring 22 and on a lower part by the surface.
- the shape, number and arrangement of the longitudinal walls 23a, 23b, 23c and the upper armature 15 may be different.
- the establishment of the temperature sensor 4 in the support body 3 is achieved by moving the temperature sensor 4 from the inside of the lower base 12 to the upper armature 15, in translation parallel to the X axis
- the head 7 of the sensor 4 and the wires 8 are respectively moved and guided in the passage recess 18 and the guide channels 9, to their final mounting position projecting from the upper wall 17a of the base 12.
- two tongues 25 for supporting the wires 8 are arranged projecting from the upper end surface 17a of the upper wall 17, each support tongue 25 being arranged to form a support for a wire 8.
- each support tongue 25 extends downstream (relative to the gas flow direction) of the channel 9 for guiding and holding the wire 8 to which it serves as support. More specifically in this case, each support tongue 25 is arranged to constrain the wire 8 in abutment against an upstream surface of the corresponding channel 9.
- the support tongues 25 extend generally parallel to the axis X of the support body 3 and have in this direction a length such that their upper end surface 25b extends at a distance from the lower end surface of the support body. the sensor head 7. In other words, the support tongues 25 are shorter than the part of the wires 8 projecting out of the upper end surface 17a of the base 12.
- each support tongue 25 has at its upper free end a protuberance 25a or bead 25a formed on the upstream side of the tongue 25.
- This bead 25a serves to support the wire 8, for example at the arcuate portion 20 of the wire 8.
- the support tongues 25 make it possible to increase the clearance left between the wires 8 and their channels 9, which facilitates the positioning of the temperature sensor 4 in the support body 3, the sensor 4 being easily inserted into the channels 9, 18 until the son 8 abuts on the beads 25a of the tongues 25, which then forces, for the end of its stroke, the sensor 4 to be positioned in a position in which each wire 8 is stuck and thus well maintained in position between the bead 25a of a tongue 25 and the upstream surface of the corresponding channel 9.
- the presence of the tongues 25 has little impact on the response time of the sensor 4, since the head 7 of the sensor 4 is disengaged at its periphery and extends away from the support tongues 25 and in particular from their upper end surfaces 25b.
- the lower base 12 ' has a longitudinal lateral wall 12a' of cylindrical shape and having, radially projecting on its inner surface, two pairs of longitudinal tabs (10a, 10b), (l ia, 1 1b), the lugs (10a, 10b), (l ia, 1 1b) of each pair of lugs forming between them a channel 9 'for guiding and holding the wires 8' of the sensor 4 .
- the tabs (10a, 10b), (1a, 1b) of each pair of tabs extend parallel to each other and to the direction of the main axis X 'of the support body 3 '; the pairs of lugs (10a, 10b), (l ia, 1 1b) are arranged facing one another, diametrically opposite in sectional view in the plane ( ⁇ ', ⁇ ') transverse to the axis X 'of the support body 3'.
- the shape of the channels 9 ' depends on the shape of the tabs; the surfaces defining the channels 9 'may for example have, in sectional view in the plane ( ⁇ ', ⁇ '), a U shape.
- a passage channel 18' for the head 7 'of the sensor 4' is provided between the inner surfaces of the free ends of the tabs (10a, 10b), (11a, 11b).
- the free ends of the tabs (10a, 10b), (11a, 11b) comprise outwardly directed beads and inside which are formed curved recesses. This results in a flare between the tabs (10a, 10b), (l ia, 1 1b) of each pair of tabs whose shape is complementary to the outer shape of the larger diameter portion of the head 7 'of the sensor 4 .
- the tabs (10a, 10b), (1 la, 1 lb) thus provide a channel 18 'for passage for the sensor head 7', allowing the passage and guiding of the latter during its mounting in the support body 3 .
- the outer surfaces of the free ends of the tabs (10a, 10b), (11a, 11b) form beads so that the thickness of the tabs (10a, 10b), (1a, 1b) 1b) is substantially constant in cross-sectional view (in the plane ( ⁇ ', Z')).
- the tabs (10a, 10b), (11a, 11b) have an elasticity allowing them to deform slightly elastically during movement and guidance of the sensor head 7 'along the inner surfaces of their free ends, the legs ( 10a, 10b), (11a, 1b) returning to position after passage of the sensor head 7 '.
- the tabs (10a, 10b), (11a, 11b) have upper end surfaces flush with the upper end surface 17a 'of the side wall 12a' and forming with it the end surface. upper 17a 'of the lower base 12'.
- the upper end surface of the tabs may not extend to the same level as the upper end surface of the side wall.
- the upper end surface of the base is formed by the endmost end surface in the upper position and the assembly is arranged so that the maintenance of the sensor is done with the sensor head maintained away from this upper end surface of the base.
- the son 8 ' has an arcuate portion 20' substantially at the upper end surface 17a 'of the base 12'; more specifically, the wires 8 'extend parallel to each other above and below this arcuate portion 20' but are further apart from each other below the arcuate portion 20 '; the arcuate portion 20 'thus has a curvature and an inversion of curvature to allow to catch the parallelism on both sides of the arcuate portion 20'.
- the upper armature 15 ' comprises, in this second embodiment, a bow having two longitudinal pillars 23a', 23b 'projecting from the upper end surface 17a' of the lower base 12 'and connected to each other. the other by a transverse wall 22 'of curved shape and in this case substantially circular projection in the plane ( ⁇ ', Y ').
- This hoop 15 ' protects the sensor 4', particularly during its assembly.
- the two longitudinal pillars 23a ', 23b' are diametrically opposed on the upper end surface 17a 'and are substantially aligned with the head 7' of the sensor 4 'in the plane ( ⁇ ', Y ').
- the sensor head 7 ' is centered in the support body 3', away from the longitudinal pillars 23a ', 23b' and the transverse wall 22 '.
- the body 3 can be mounted so that the sensor head 7 'is aligned, on its upstream side, with none of the longitudinal pillars 23a', 23b 'in the direction Z' of gas flow, which allows the sensor head 7 'to be directly exposed to the flow of gas without the longitudinal pillars 23a ', 23b' of the armature 15 'obstruct the gas.
- the body 3 can be mounted in any selected angular position, defining an angle of arrival of the gas on the sensor head 7 '.
- the positioning of the sensor 4 'inside the support body 3' is achieved by moving and guiding the wires 8 'in their respective guide channels 9', the sensor head 7 'being guided in its passage channel 18 '.
- a recess 2 ⁇ makes it possible to put in fluid communication the interior of the gas pipe with a pressure sensor.
- the lower base 12 has a longitudinal lateral wall 12a "of cylindrical shape and having, radially projecting on its internal surface, two lugs 10", 1 1 “longitudinal, each lug 10", 1 1 “providing, with a portion facing the side wall 12a", a channel 9 "for guiding and holding a wire 8".
- the two longitudinal tabs 10 ", 11” extend parallel to each other and symmetrically with respect to the plane (X “, Z").
- Each tab 10 ", 1 1” extends at a distance from a surface facing the side wall 12a "substantially corresponding to the diameter of a wire 8", to provide a channel 9 "of diameter corresponding substantially to the diameter of 8 "wire, slightly higher, as in the previous embodiments.
- a channel 18 "for passing the head 7" of the sensor 4 " is formed both in the side wall 12a” and between the inner surfaces of the free ends of the tabs 10 ", 1” to fulfill a function equivalent to the channels passage 18, 18 'of the previous embodiments.
- the inner surfaces of the free ends of the tabs 10 ", 1 1” are curved in shape complementary to the larger diameter portion of the sensor head 7 ", to allow its passage and its guidance, while that the outer surfaces form a bead intended to maintain substantially constant the thickness of the tabs 10 ", 1 1".
- the sensor head 7 is thus kept at a distance from the upper end surface 17a" of the lower base 12 ", the head 7" being held by the wires 8 “themselves held by the channels 9".
- the 8 "wires have a arcuate portion 20 "near the upper end surface 17a” of the lower base 12 ", this arcuate portion 20" being of similar shape to that of the second embodiment of Figure 5.
- the armature upper 15 “of the support body 3" comprises a hoop having two longitudinal pillars 23 a “, 23b” projecting from the upper end surface 17a "of the lower base 12".
- the longitudinal pillars 23a “, 23b” are connected to one another by a transverse wall 22 "of generally rectilinear shape, the junction zone between each longitudinal pillar 23a", 23b “and the transverse wall 22" being curved.
- the sensor head 7 is sufficiently far away from the pillars 23a", 23b “and sufficiently disengaged on its periphery so that the presence of the pillars 23a", 23b "in the direction Z" of gas flow does not alter its time of reply.
- a recess 21 is used to fluidly connect the interior of the gas line with a pressure sensor.
- the positioning of the sensor 4 is performed by moving and guiding the head 7" of the sensor 4 "and the two son 8" in the recess 18 “of passage of the head and in the two channels 9", respectively, from the lower base 12 "to the upper armature 15".
- Figures 8 to 10 show a fourth embodiment of the invention.
- the device ( ⁇ ") for measuring temperature comprises a support 2" 'from which a body 3 "' emerges, the latter comprising a sensor head 7" 'held by its wires 8 "'in 9" channels
- This embodiment is distinguished from the previous ones by the fact that it comprises a protection for the sensor head 7 "'which is made only of three pillars 23a'", 23b '", 23c'" which meet above the sensor head 7 "'.
- the device may advantageously perform an additional function by including a pressure sensor housed in the support 2, 2 ', 2 ", 2"' or the body 3. , 3 ', 3 ", 3"'.
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- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Measuring Volume Flow (AREA)
Abstract
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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CN201180068883.4A CN103403512B (zh) | 2010-12-30 | 2011-12-20 | 用于连接到机动车辆热机的气管的温度测量装置,和热机和设置有该装置的车辆 |
EP11815468.1A EP2659247A1 (fr) | 2010-12-30 | 2011-12-20 | Dispositif de mesure de température pour conduite de gaz reliée à un moteur thermique de véhicule automobile, moteur thermique et véhicule équipés dudit dispositif |
US13/976,474 US9945757B2 (en) | 2010-12-30 | 2011-12-20 | Temperature-measuring device for a gas pipe connected to a heat engine of a motor vehicle, and heat engine and vehicle provided with said device |
BR112013016691A BR112013016691A2 (pt) | 2010-12-30 | 2011-12-20 | dispositivo de medição de temperatura para condutor de gás ligado a um motor térmico de veículo automotor, motor térmico e veículo equipados do dispositivo mencionado |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1061357A FR2970076B1 (fr) | 2010-12-30 | 2010-12-30 | Dispositif de mesure de temperature pour conduite de gaz reliee a un moteur thermique de vehicule automobile, moteur thermique et vehicule equipes dudit dispositif. |
FR1061357 | 2010-12-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012089960A1 true WO2012089960A1 (fr) | 2012-07-05 |
Family
ID=45558754
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2011/053091 WO2012089960A1 (fr) | 2010-12-30 | 2011-12-20 | Dispositif de mesure de température pour conduite de gaz reliée à un moteur thermique de véhicule automobile, moteur thermique et véhicule équipés dudit dispositif |
Country Status (6)
Country | Link |
---|---|
US (1) | US9945757B2 (fr) |
EP (1) | EP2659247A1 (fr) |
CN (1) | CN103403512B (fr) |
BR (1) | BR112013016691A2 (fr) |
FR (1) | FR2970076B1 (fr) |
WO (1) | WO2012089960A1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014211771A1 (de) * | 2014-06-18 | 2015-12-24 | Robert Bosch Gmbh | Temperaturmessvorrichtung zur Erfassung einer Temperatur eines strömenden fluiden Mediums |
CN113340465B (zh) * | 2021-04-29 | 2023-05-05 | 慧石(上海)测控科技有限公司 | 快速响应感温探头及温度传感器 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4227578A1 (de) * | 1992-08-20 | 1994-02-24 | Vdo Schindling | Temperaturgeber |
DE102009000597A1 (de) * | 2009-02-04 | 2010-08-05 | Robert Bosch Gmbh | Haltekörper zur spielfreien Montage von Sensoren |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1426747U (fr) * | ||||
DE19711939A1 (de) * | 1997-03-21 | 1998-09-24 | Bosch Gmbh Robert | Vorrichtung zur Erfassung des Drucks und der Temperatur im Saugrohr einer Brennkraftmaschine |
DE19731420A1 (de) * | 1997-07-22 | 1999-01-28 | Bosch Gmbh Robert | Vorrichtung zur Erfassung des Drucks und der Temperatur im Saugrohr einer Brennkraftmaschine und Verfahren zu ihrer Herstellung |
US6505612B1 (en) * | 2001-12-20 | 2003-01-14 | Deere & Company | Natural gas fuel metering assembly and engine with same |
CN1267710C (zh) * | 2002-10-23 | 2006-08-02 | 株式会社电装 | 具有温度传感器的压力传感装置 |
US20040101031A1 (en) * | 2002-11-25 | 2004-05-27 | Ford Global Technologies, Inc. | Temperature sensor with improved response time |
JP2004226325A (ja) * | 2003-01-24 | 2004-08-12 | Hitachi Ltd | 温度検出器 |
JP2005274412A (ja) * | 2004-03-25 | 2005-10-06 | Denso Corp | 温度センサ一体型圧力センサ装置 |
JP2008215846A (ja) * | 2007-02-28 | 2008-09-18 | Denso Corp | 温度センサの取付構造 |
US8833174B2 (en) * | 2007-04-12 | 2014-09-16 | Colorado School Of Mines | Piezoelectric sensor based smart-die structure for predicting the onset of failure during die casting operations |
DE102008002682B4 (de) * | 2008-06-26 | 2020-01-30 | Robert Bosch Gmbh | Vorrichtung zur Erfassung des Drucks und der Temperatur in einem Saugrohr einer Brennkraftmaschine |
JP5113691B2 (ja) * | 2008-09-17 | 2013-01-09 | 株式会社パイオラックス | 温度センサの取付装置 |
-
2010
- 2010-12-30 FR FR1061357A patent/FR2970076B1/fr active Active
-
2011
- 2011-12-20 CN CN201180068883.4A patent/CN103403512B/zh not_active Expired - Fee Related
- 2011-12-20 BR BR112013016691A patent/BR112013016691A2/pt not_active Application Discontinuation
- 2011-12-20 WO PCT/FR2011/053091 patent/WO2012089960A1/fr active Application Filing
- 2011-12-20 US US13/976,474 patent/US9945757B2/en not_active Expired - Fee Related
- 2011-12-20 EP EP11815468.1A patent/EP2659247A1/fr not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4227578A1 (de) * | 1992-08-20 | 1994-02-24 | Vdo Schindling | Temperaturgeber |
DE102009000597A1 (de) * | 2009-02-04 | 2010-08-05 | Robert Bosch Gmbh | Haltekörper zur spielfreien Montage von Sensoren |
Non-Patent Citations (1)
Title |
---|
See also references of EP2659247A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2659247A1 (fr) | 2013-11-06 |
FR2970076B1 (fr) | 2012-12-21 |
US9945757B2 (en) | 2018-04-17 |
FR2970076A1 (fr) | 2012-07-06 |
BR112013016691A2 (pt) | 2016-10-04 |
CN103403512A (zh) | 2013-11-20 |
CN103403512B (zh) | 2016-06-08 |
US20130336361A1 (en) | 2013-12-19 |
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