EP2135008B1 - Bougie de préchauffage - Google Patents

Bougie de préchauffage Download PDF

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Publication number
EP2135008B1
EP2135008B1 EP08717467.8A EP08717467A EP2135008B1 EP 2135008 B1 EP2135008 B1 EP 2135008B1 EP 08717467 A EP08717467 A EP 08717467A EP 2135008 B1 EP2135008 B1 EP 2135008B1
Authority
EP
European Patent Office
Prior art keywords
sealing element
weight
sleeve
glow plug
support tube
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.)
Not-in-force
Application number
EP08717467.8A
Other languages
German (de)
English (en)
Other versions
EP2135008A1 (fr
Inventor
Christoph Kern
Ewgenij Landes
Reiko Zach
Michael Kleindl
Christian Doering
Steffen Schott
Pavlo Saltikov
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to SI200831058T priority Critical patent/SI2135008T1/sl
Publication of EP2135008A1 publication Critical patent/EP2135008A1/fr
Application granted granted Critical
Publication of EP2135008B1 publication Critical patent/EP2135008B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
    • F23Q7/001—Glowing plugs for internal-combustion engines

Definitions

  • the invention is based on a glow plug according to the preamble of claim 1.
  • a glow plug with combustion chamber pressure sensor in which a designed as a glow plug ceramic heater is disposed in a housing.
  • the ceramic heater is surrounded by a support tube which is fixed by means of a seal in the housing.
  • the seal is formed by a arranged between the support tube and housing graphite ring.
  • the invention has for its object to provide a glow plug with a ceramic heater, in which the interior is reliably sealed against the combustion chamber gases.
  • the glow plug is provided with a sealing element between ceramic heating element and metallic support tube, wherein the sealing element consists of a metallic alloy with so-called Invar effect, such alloys having a particularly low value in terms of thermal expansion coefficient (CTE).
  • the Invar effect is a phenomenon that defines a group of alloys and compounds in certain states Temperature regions abnormally small or partially negative coefficients of thermal expansion.
  • the metallic support tube used has the task of securing the ceramic heater.
  • the ceramic heater is incorporated in the support tube, for example by means of a soldering process, cohesively.
  • Another function of the support tube is to present a hermetic, long-term sealing of a sensor module against the influences of aggressive combustion media, in particular against the high combustion pressures, against sooting and against accumulating soot particles and against corrosion.
  • a FeNi alloy As an alloy with an Invar effect, a FeNi alloy is used.
  • the failure of the sealing function i. the local or complete loss of the mechanical contact at the interface between the metallic material of the support tube and the ceramic material of the radiator avoided by an additional sealing element pressed directly on a combustion chamber side end face of the support tube on the ceramic heater and then by means of a non-positive or a cohesive joint connection is attached to the support tube.
  • the sealing element is formed in a ring shape.
  • a Hertzian pressure on the contact line between the sealing element and the radiator can be realized, which leads to a particularly good seal against the aggressive media, in particular the combustion pressures in the combustion chamber.
  • the proposed sealing element be it in the form of a one-piece or multi-part sleeve, be it in ring form formed as a one-piece component, made of a material having a coefficient of thermal expansion (WAK), which in the candidate here operating temperature range under the CTE value of the ceramic heater is, itself approaches or insignificantly exceeds this.
  • WAK coefficient of thermal expansion
  • Particularly suitable as a material for the sealing element to call a metal alloy with Invar effect, which is known under the trade name KOVAR ® .
  • This metal alloy has a nickel content of 29.0 wt%, a cobalt content of 17.0 wt%, a silicon content of 0.1 wt% to 0.2 wt%, a manganese content of 0.3 Wt .-% and a maximum carbon content of 0.02 wt .-%, balance iron.
  • the sleeve-shaped sealing element produced in an embodiment in a ring shape, wherein the sleeve-shaped sealing element is attached to the support tube.
  • the joint between the sleeve-shaped sealing element and the support tube may be formed with tapered surfaces or step-shaped.
  • the axial positioning of the sealing element, seies in ring form be it in sleeve shape, variable.
  • the position on the annular, the combustion chamber facing end side of the support tube, which surrounds the ceramic heater is particularly advantageous because no further modifications of the ceramic heater are required in this case.
  • a sealing connection between the support tube and the sealing element, be it annular, be it sleeve-shaped can be produced, for example, by means of a corresponding cohesive joining method, such as, for example, the welding method or the soldering method.
  • the complete support tube can be made entirely of an alloy with Invar effect.
  • the sealing element is not limited in terms of its application only to glow plugs, but can also be used on other cylinder head components of internal combustion engines, such as glow plugs with integrated pressure sensors or the like.
  • glow plug with pressure detection device which is hereinafter referred to as Druckmessglühkerze 10, comprises a housing 11, in which a designed as a glow pin ceramic heater 12 and a sensor 13 are used for pressure detection.
  • the sensor 13 is arranged in a sensor module 30.
  • a radially symmetrical metal diaphragm 46 is used to seal the separate, preassembled sensor module 30, for example.
  • the pressure applied to the metal diaphragm 46 is converted into a separate pressure measurement module.
  • the pressure measuring module essentially comprises the ceramic heating element 12 fastened in the support tube 14, a compensation element 24 as well as a heat-insulating and force-transmitting element 26 and the separate sensor module 30, a fixing element 28.
  • the ceramic heater 12 When exposed to a pressure, such as the pressure prevailing in the cylinder of an internal combustion engine, the ceramic heater 12 serves as a transmission element of the compressive force in the combustion chamber to the sensor module 30.
  • the ceramic heater 12 is coupled via the support tube 14 to the metal diaphragm 46.
  • the force acting on the ceramic heater 12 is transmitted to the sensor module 30 via the force path.
  • the compensation element 24 is preferably made of a material with a specially adapted value of the thermal expansion coefficient (CTE) and is mainly used for thermal length compensation at higher temperatures.
  • the upper thermal insulation and force transmission element 26 has the smallest possible value for the thermal conductivity and serves the maximum temperature reduction on the sensor module 30.
  • the thermal insulation and compensation element 26 has a very high surface quality and high rigidity.
  • Behind the sensor module 30 is the fixing element 28.
  • the sensor module 30 is between the radially symmetrical metal diaphragm 46 and the fixing element 28 by means of the in FIG. 1 shown, sleeve-shaped sensor cage
  • the sensor cage 32 is fastened by means of a weld, for example, as close as possible in the region of a sealing cone 34.
  • the glow current to the ceramic heater 12 is supplied to this via a Glühstromtechnisch 20.
  • a contacting of the Glühstromtechnisch 20 at one end face of the ceramic heater 12 is carried out at a contact 22.
  • the axis of symmetry of the ceramic heater 12 is indicated by reference numeral 36.
  • a sealing element 40 formed in annular form 18 is arranged on the support tube 14, which is formed in one piece here, on a combustion-chamber-side end face 16.
  • the sealing element 40 embodied here in the form of a ring 18 is fastened to the peripheral surface of the ceramic heating element 12 by means of a shrink fit 38. Subsequently, a non-positive or a material-fit joint connection 44 is produced on the combustion chamber-side end face 16 of the support tube 14, which is formed in one or more parts.
  • a Hertzian pressure on the contact line between the annular element 18 formed in the sealing element 40 and the lateral surface of the ceramic heater 12 at the shrink fit 38 are realized, whereby a particularly good seal against the combustion chamber of the internal combustion engine is achieved.
  • the support tube 14 usually made of metallic material has the task of fixing the ceramic heater 12.
  • the ceramic heating element 12 is received in the support tube 14 in a cohesive connection, for example in a soldered connection.
  • the solder joint serves on the one hand for fastening and sealing of the ceramic heater 12 within the support tube 14, on the other hand for electrical contacting of the ceramic heater 12 in the support tube 14.
  • Another function of the support tube 14 is a hermetic, long-term sealing of the sensor module 30 against the effects of aggressive combustion media, especially against high combustion pressures, against sooting and accumulating soot particles as well as corrosion effects.
  • the ceramic heater 12 is made of a ceramic having a relatively low coefficient of thermal expansion (CTE), while the material of the support tube 14 itself has a comparatively higher CTE (steel) value.
  • the sealing element 40 is preferably made from a material having a CTE value which lies in the relevant operating temperature range below the CTE value of the ceramic heating element 12, approaches it or approaches it only insignificantly exceeds.
  • Such a combination of properties of the material has the constructive advantage that the interference fit 38 between the sealing element 40 in annular form 18 and the ceramic heater 12 increases with increasing temperature. If the solder breaks between the jacket surface of the ceramic heating element 12 and the inner jacket of the support tube 14, the sealing of the pressure measuring glow plug 10 is still ensured by the sealing element 40 in annular form 18.
  • the sealing element 40 As material for the sealing element 40, be it in sleeve form, be it in ring form 18, come metal alloys in question, which have a so-called Invar effect. Above all, these alloys are characterized by an almost constant, invariant thermal expansion as a function of the temperature over a wide temperature range.
  • the pressure measuring glow plug 10 comprises the metal diaphragm 46 above the one or more support tube 14.
  • the metal diaphragm 46 is substantially radially symmetrical and forms a first abutment 48 for the support tube 14 formed in one or more parts and a further, second abutment 50 for the abutment this embodiment sleeve-shaped sensor cage 32nd Der Sensor cage 32 in turn encloses the fixing element 28, the thermal insulation and force transmission element 26 and the compensation element 24.
  • Aus FIG. 2 shows that the upper end face of the ceramic heating element 12 is electrically contacted at the contact 22 by the Glühstromtechnisch 20.
  • the Glühstromtechnisch 20 can - as in FIG. 2 shown - substantially straight, it may also include one or more helical turns, depending on the purpose.
  • the sensor cage 32 encloses the sensor module 30, which in the in FIG. 2 illustrated embodiment with the compensation element 24 and the thermal insulation and force transmission element 26 cooperates.
  • the sensor module 30 may be formed, for example, as a piezoelectric or as a piezoresistive sensor module for pressure measurement.
  • the body of the pressure measuring glow plug 10 comprises an opening 52 through which the support tube 14 extends.
  • the ceramic heater 12 Inside the support tube 14 is the ceramic heater 12.
  • the in FIG. 2 partially shown ceramic heater 12 is enclosed along its axial extent in the support tube 14 by a solder joint.
  • the combustion chamber-side end face 16 of the one or more parts designed support tube 14 indicated, on which the sealing element 40 rests in annular form 18.
  • the sealing element 40 rests on the one hand on the shrink fit 38 on the lateral surface of the ceramic heater 12 and on the other hand on the already in connection with FIG. 1 mentioned cohesive connection 44 with the combustion chamber side end 16 of the support tube 14 is connected.
  • the sealing of the ceramic heater 12 is effected by the arranged on the combustion chamber side end 16 of the one or more parts support tube 14 sealing element 40. This is secured via a frictional or cohesively formed joint connection 44 on the combustion chamber side end 16 of the one or more parts support tube 14 ,
  • the sealing element 40 is made according to the proposed invention, made of a material having a CTE value, which is in the relevant operating temperature range below the CTE value of the ceramic heater 12 or approaches this or exceeds this insignificant.
  • a property combination has the constructive advantage that the interference fit on the shrink fit 38 between the sealing element 40 and the ceramic heater 12 increases with increasing temperature.
  • the sealing of the pressure sensing device by the Sealing element 40 can be ensured, which works reliably both at low and at higher operating temperatures.
  • a metal alloy with Invar effect is used as the material for the sealing member 40.
  • the base alloy having this property is a ferromagnetic, face-centered cubic FeNi alloy having a stoichiometry of approximately Fe 65 Ni 35 .
  • This alloy is characterized by a nearly constant, invariant thermal expansion as a function of temperature over a wide temperature range.
  • sealing element 40 can be seen.
  • the sealing element 40 in contrast to the illustrations according to the FIGS. 1 and 2 -
  • the support tube 14 and the sleeve 54 are fixed together at a joint 60.
  • the joint 60 between the sleeve 54 and the support tube 14 may comprise at least one or more bevels, so that the in FIG. 3 shown configuration of an inclined joint 60 results.
  • bevels joint 60 results in an improvement of cohesive Fügbarkeit, in particular the weldability during manufacture. Will, as in FIG.
  • a sleeve 54 used with internal profiling 55 an increased Hertzian pressure on the contact line on the circumference of the ceramic heater 12 can be realized. This improves the sealing effect. Furthermore, an additional seal can be achieved by the cohesive connection embodied at the joint 60.
  • the joint 60 between the sealing element 54 and the support tube 14 may also be step-shaped, as shown in FIG FIG. 4 is shown.
  • the joint 60 is seen in the axial direction extended step on the support tube 14, which engages in a correspondingly configured inner recess of the sleeve 54.
  • an improved Hertzian pressure can be achieved at the contact line on the circumference of the ceramic heating element 12.
  • the metallic Invar effect alloy may be one of the base alloys listed below. Noteworthy is Fe-36Ni, commonly known as Invar, and also Fe-32Ni-5Co, commonly known as Superinvar. Furthermore, Fe-29Ni-17Co, which is commonly known as Kovar ® known to be used, as well as Fe-42Ni-Cr-Ti, which is commonly known as Ni-Span-C.
  • the individual components of these alloys vary widely, namely (in% by weight below):
  • Fe-36Ni, Fe-Ni42 and Fe-Ni43 generally known as Invar
  • concentration ranges result for the individual alloying elements: Ni from 35.0 to 44.0% by weight, Mn ⁇ 1.0 Wt .-%, Si ⁇ 0.50 wt .-% and C ⁇ 0.10 wt .-%, balance Fe.
  • the following concentration ranges result: Ni from 31.0 to 33.0% by weight, Co from 4.0 to 6.0% by weight. %, Mn ⁇ 0.50 wt .-% and Si ⁇ 0.50 wt .-%, C ⁇ 0.10 wt .-%, balance Fe.
  • Ni 28.0 to 30.0 wt%
  • Co from 17.0 to 18.0 wt%
  • Mn 0.50 Wt .-%
  • Si ⁇ 0.30 wt .-%
  • C ⁇ 0.05 wt .-%
  • the base alloy Fe-42Ni-Cr-Ti generally known as Ni-Span-C, has the following composition: Ni of 41.0 to 43.0% by weight, Co of 6.0 to 7.0% by weight. %, Mn ⁇ 1.0% by weight, Si ⁇ 0.50% by weight and C ⁇ 0.10% by weight, remainder Fe.
  • the following table shows the CTE reference values for the alloy KOVAR ® as well as commonly used steels, such as ferritic steels, and ceramics heater are listed (for example, silicon-based).
  • the table shows that a significant reduction in the CTE difference at the interface can be achieved by using this alloy instead of a steel.
  • a good seal in particular at higher temperatures, such as occur during operation of the internal combustion engine can be achieved.
  • column 4 of the above table shows that occurs, for example, at temperatures of 400 ° C a negative difference of -0.5 x 10 -6 K -1 between the two thermal expansion coefficients, and at a temperature of 450 ° C a difference of CTE values between Fe-29Ni-17Co (KOVAR ®) and ceramics of -0.3 ⁇ 10 -6 K -1 occurs. Since the differences between the two CTE values given in column 4 are extremely small and even reach negative values with respect to the temperatures of 400 ° C and 450 ° C, the use of these sealing materials makes them particularly good, even at higher temperatures Temperatures achieve stable sealing. In column 5, for the temperatures of 400 ° C.
  • the seal of the Druckmessglühkerze 10 can also be realized only via the support tube 14.
  • the support tube 14, made, for example, of Fe-29Ni-17Co has at a region facing away from the combustion chamber 12 'two adjacent sections 62 with reduced wall thickness. Between these sections 62 is another section which forms a shrink fit 38 with the ceramic heater 12, wherein the shrink fit 38 forms the sealing element 40 at this point.
  • the support tube 14 bears against the preferably radially symmetrical metal diaphragm 46, which in turn encloses the Glühstromtechnisch 20 and the contacting 22 on the ceramic heater 12.
  • the support tube 14 and the ceramic heater 12 are connected to each other in the kerzenangenahen area 12 ', for example via a solder connection 56.
  • the solder connection 56 represents the electrical contacting of the ceramic heating element 12 and its attachment in the support tube 14.
  • a clearance 58 is formed between the inner circumferential surface of the support tube 14 and the lateral surface of the ceramic heater 12. above the shrink fit 38 is filled with solder 56.
  • FIG. 6 shows that the pressure measuring glow plug 10 comprises a sealing cone 34. Within the sealing cone 34, the support tube 14 is received, which is preferably made of a metallic alloy, such as Fe-29Ni-17Co. The support tube 14 is adjacent to the metal membrane 46, which is preferably formed radially symmetrical and the contact 22 and the Glühstrom effet 20 encloses. The support tube 14 forms in the upper region of the ceramic heater 12 to the lateral surface a clearance fit, which is filled with solder 56. From the embodiment according to FIG. 6 shows that seen in the axial direction of the support tube 14 at least one circumferential bead 64 extends.
  • a metallic alloy such as Fe-29Ni-17Co
  • the Filling of solder 56 which serves for electrical contacting of the ceramic heater 12, extends to above the peripheral bead 64.
  • the at least one circumferential bead 64 of the shrink fit 38 between the outer surface of the ceramic heater 12 and the inner circumferential surface of the support tube 14 is formed.
  • the at least one circumferential bead 64 on the circumference of the support tube 14 a local interference fit with gentle course of the joint pressure in the direction of the edge of the press fit 38 can be achieved with the ceramic heater 12.
  • the sealing element 40 is formed between the support tube 14 and the ceramic heater 12.
  • the representation according to FIG. 7 is a further embodiment of the Druckmessglühkerze 10 refer.
  • the Druckmessglühkerze 10 includes the sleeve 54 which is secured in the region of the sealing cone 34 in the plug body of the Druckmessglühkerze 10.
  • the sleeve 54 which is made of, for example, Fe-29Ni-17Co, is disposed on the region 12 'facing away from the combustion chamber.
  • the sleeve 54 adjoins the preferably radially symmetrical metal diaphragm 46, which in turn encloses the contact 22 and the Glühstrom effet 20.
  • the support tube 14 made of conventional steel is bonded at a junction 68 to the sleeve 54, which is made of an Invar effect material, such as Fe-29Ni-17Co. While between the sleeve 54 and the peripheral surface of the ceramic heater 12 over the axial extent of the sleeve 54 of the shrink fit 38 is formed as a sealing element 40 in the form of a press fit to ensure tightness, is between the support tube 14 and the lateral surface of the ceramic heater 12, a clearance fit 66 filled with solder.
  • an Invar effect material such as Fe-29Ni-17Co
  • FIG. 8 a design of the seal of Druckmessglühkerze 10 can be seen, wherein the ceramic heater 12 is surrounded by the support tube 14, and wherein between the lateral surface of the ceramic heater 12 and the inner peripheral surface of the support tube 14 is filled with solder clearance 66 is present.
  • the support tube 14 is fixed in the opening 52 of the sealing cone 34 of the plug body of Druckmessglühkerze 10 and adjacent to a preferably radially symmetrical metal diaphragm 46.
  • the preferably radially symmetrical metal diaphragm 46 in turn surrounds the contact 22, in which the Glühstromtechnisch 20 with the upper end side of the ceramic heater 12 is connected.
  • the support tube 14 according to the in FIG. 8 illustrated embodiment of the pressure measuring glow plug 10 made of Fe-29Ni-17Co or the above procured base alloys and has a lower coefficient of thermal expansion (WAK) in the rear region 12 'on.
  • WAK coefficient of thermal expansion

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)

Claims (8)

  1. Bougie de préchauffage dotée d'un corps de chauffe (12) céramique disposé dans un carter (11) et prenant la forme d'un pointeau d'allumage entouré par un tube de maintien (14), le corps de chauffe (12) céramique étant étanchéifié dans le tube de maintien (14) par rapport à une chambre de combustion à l'aide d'un joint d'étanchéité et le joint d'étanchéité prenant la forme d'un élément d'étanchéité (40) fabriqué à partir d'un alliage présentant un effet Invar, caractérisée en ce que l'alliage présentant un effet Invar est un alliage de FeNi centré à surfaces cubiques présentant les plages de concentration suivantes :
    - Ni de 35,0 à 44,0 % en poids, Mn < 1,0 % en poids, Si < 0,50 % en poids et C < 0,10 % en poids, pour le reste Fe ; ou
    - Ni de 31,0 à 33,0 % en poids, Co de 4,0 à 6,0 % en poids, Mn < 0, 50 % en poids et Si < 0, 50 % en poids, C < 0,10 % en poids, pour le reste Fe ; ou
    - Ni de 28,0 à 30,0 % en poids, Co de 17,0 à 18,0 % en poids, Mn < 0,50 % en poids, Si < 0,30 % en poids et C < 0,05 % en poids, pour le reste Fe ; ou
    - Ni de 41,0 à 43,0 % en poids, Co de 6,0 à 7,0 % en poids, Mn < 1,0 % en poids, Si < 0,50 % en poids et C < 0,10 % en poids, pour le reste Fe.
  2. Bougie de préchauffage selon la revendication 1, caractérisée en ce que l'élément d'étanchéité (40) prend une forme annulaire (18) fixée à une surface d'enveloppe du corps de chauffe (12) céramique par le biais d'un siège rétractile (38) et relié à un côté avant (16) du tube de maintien (14) par le biais d'une liaison (44) réalisée par complémentarité de matières.
  3. Bougie de préchauffage selon la revendication 1 ou 2, caractérisée en ce que l'élément d'étanchéité (40) est un élément d'étanchéité (54) en forme de fourreau relié au tube de maintien (14) au niveau d'un point de heurt (60) et fixé à une surface d'enveloppe du corps de chauffe (12) céramique par le biais d'un siège rétractile (38).
  4. Bougie de préchauffage selon la revendication 3, caractérisée en ce que le point de heurt (60) est réalisé entre l'élément d'étanchéité (54) en forme de fourreau et le tube de maintien (14) sous la forme d'un point de heurt (60) en forme de cône ou de gradin.
  5. Bougie de préchauffage selon la revendication 1, caractérisée en ce que l'élément d'étanchéité (40) est un élément d'étanchéité (54) en forme de fourreau et que l'élément d'étanchéité (54) en forme de fourreau et le tube de maintien (14) sont réalisés sous la forme d'un composant unique comportant deux sections (62) connexes présentant une épaisseur de paroi réduite ente lesquelles se forme une section annulaire formant un siège rétractile (38) doté d'un corps de chauffe (12) céramique servant d'élément d'étanchéité (40).
  6. Bougie de préchauffage selon la revendication 1, caractérisée en ce que l'élément d'étanchéité (40) est un élément d'étanchéité (54) en forme de fourreau et que l'élément d'étanchéité (54) en forme de fourreau et le tube de maintien (14) prennent la forme d'un composant unique comportant au moins un siège (64) périphérique formant un siège rétractile (38) doté du corps de chauffe (12) céramique servant d'élément d'étanchéité (40).
  7. Bougie de préchauffage selon la revendication 1, caractérisée en ce que l'élément d'étanchéité (40) est un élément d'étanchéité (54) en forme de fourreau, que l'élément d'étanchéité (54) en forme de fourreau et le tube de maintien (14) prennent la forme d'un composant unique et que l'élément d'étanchéité (54) en forme de fourreau forme l'élément d'étanchéité (40) au niveau d'une section (12') de l'élément chauffant (12) opposée à la chambre de combustion.
  8. Bougie de préchauffage selon la revendication 1, caractérisée en ce qu'un module de capteur (30) est disposé dans le carter (11), ledit module étant étanchéifié par rapport à la chambre de combustion par le biais d'une membrane métallique (46) réalisée pour l'essentiel symétriquement dans le plan radial et que le module de capteur (30) comprend un capteur de pression (13).
EP08717467.8A 2007-03-15 2008-03-06 Bougie de préchauffage Not-in-force EP2135008B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200831058T SI2135008T1 (sl) 2007-03-15 2008-03-06 Vžigalna svečka

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102007013127 2007-03-15
DE102007024393 2007-05-25
DE102008009429A DE102008009429A1 (de) 2007-03-15 2008-02-15 Abdichtung für eine Glühkerze
PCT/EP2008/052720 WO2008110496A1 (fr) 2007-03-15 2008-03-06 Système d'étanchéité pour bougie de préchauffage

Publications (2)

Publication Number Publication Date
EP2135008A1 EP2135008A1 (fr) 2009-12-23
EP2135008B1 true EP2135008B1 (fr) 2013-07-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08717467.8A Not-in-force EP2135008B1 (fr) 2007-03-15 2008-03-06 Bougie de préchauffage

Country Status (6)

Country Link
US (1) US8003917B2 (fr)
EP (1) EP2135008B1 (fr)
JP (1) JP5119274B2 (fr)
DE (1) DE102008009429A1 (fr)
SI (1) SI2135008T1 (fr)
WO (1) WO2008110496A1 (fr)

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DE102007049971A1 (de) * 2007-10-18 2009-04-23 Robert Bosch Gmbh Glühstiftkerze
JP5161121B2 (ja) * 2008-03-28 2013-03-13 日本特殊陶業株式会社 グロープラグ
WO2010060616A2 (fr) * 2008-11-27 2010-06-03 Borgwarner Beru Systems Gmbh Bougie de préchauffage et son procédé de fabrication
US8217309B2 (en) 2008-12-15 2012-07-10 Federal-Mogul Italy Srl. Glow plug with pressure sensing canister
DE102009011415B4 (de) * 2009-03-03 2013-09-26 Beru Ag Keramische Glühkerze
DE102010055119B4 (de) 2010-12-18 2012-08-09 Borgwarner Beru Systems Gmbh Glühkerze
EP2472181B1 (fr) * 2010-12-22 2014-09-10 HIDRIA AET Druzba za proizvodnjo vzignih sistemov in elektronike d.o.o. Bougie de préchauffage à manchon capteur d'efforts entourant le doigt chauffant hors chambre de combustion
EP2469171A1 (fr) * 2010-12-22 2012-06-27 HIDRIA AET Druzba za proizvodnjo vzignih sistemov in elektronike d.o.o. Bougie de préchauffage dotée d'un corps de bougie formée de plusieurs tubes placés de bout en bout
DE102011002596A1 (de) * 2011-01-12 2012-07-12 Robert Bosch Gmbh Brennraumdrucksensor zur Erfassung eines Drucks in einem Brennraum einer Verbrennungskraftmaschine
JP5854638B2 (ja) * 2011-05-19 2016-02-09 株式会社ミクニ グロープラグ
DE102011052565B4 (de) * 2011-08-10 2019-04-18 Vacuumschmelze Gmbh & Co. Kg Thermoelektrisches Modul und Verfahren zur Herstellung eines thermoelektrischen Moduls
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DE102008009429A1 (de) 2008-09-18
SI2135008T1 (sl) 2014-03-31
US20090321408A1 (en) 2009-12-31
US8003917B2 (en) 2011-08-23
WO2008110496A1 (fr) 2008-09-18
JP5119274B2 (ja) 2013-01-16
JP2010521645A (ja) 2010-06-24
EP2135008A1 (fr) 2009-12-23

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