WO2011116366A1 - Bougie de préchauffage à liaison permanente de la pointe de sonde, résistant à un déplacement - Google Patents

Bougie de préchauffage à liaison permanente de la pointe de sonde, résistant à un déplacement Download PDF

Info

Publication number
WO2011116366A1
WO2011116366A1 PCT/US2011/029146 US2011029146W WO2011116366A1 WO 2011116366 A1 WO2011116366 A1 WO 2011116366A1 US 2011029146 W US2011029146 W US 2011029146W WO 2011116366 A1 WO2011116366 A1 WO 2011116366A1
Authority
WO
WIPO (PCT)
Prior art keywords
shell
glow plug
heater probe
leg
flex joint
Prior art date
Application number
PCT/US2011/029146
Other languages
English (en)
Inventor
Sandro Goretti
John A. Burrows
Original Assignee
Federal-Mogul Ignition Company
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 Federal-Mogul Ignition Company filed Critical Federal-Mogul Ignition Company
Publication of WO2011116366A1 publication Critical patent/WO2011116366A1/fr

Links

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

  • This invention relates generally to glow plugs, and more particularly to ceramic glow plugs.
  • Ceramic glow plugs typically have an outer metal shell with a ceramic heater probe fixed partially therein.
  • the heater probe extends axiaily outwardly from the shell to a distal probe tip and axiaily into the shell to a proximal end configured for attachment to a center electrode.
  • the heater probe is preferably maintained in coaxial alignment with a central axis of the metal shell and the center electrode, such that the distal probe tip extends into the cylinder bore in an intended location to insure optimal ignition results.
  • the heater probe can be plastically deformed by being bent out of axial alignment with central axis of the shell and center electrode, such as during assembly or handling in general. When this occurs, the glow plug is generally rendered inoperable.
  • a glow plug constructed in accordance with the invention has a heater probe that can be axiaily misaligned relative to a central axis of an outer shell and of a center electrode within the shell by an externally applied radial force, and thereafter return automatically substantially to its original axiaily aligned configuration with the central axis of the shell and center electrode upon removing the applied force without the glow plug being damaged.
  • the metal outer shell has a through bore extending along the central axis between a proximal end and a distal end.
  • the center electrode is received in the though bore and extends along the central axis.
  • the heater probe is attached in electrical communication with the center electrode in the through bore and extends along the central axis axially outwardly from the distal end of the shell .
  • An annular ilex joint provides the sole source of attachment of the outer shell to the heater probe.
  • the flex joint has one end attached to the outer shell adjacent the distal end and another end attached to the heater probe.
  • the flex joint has an annular leg extending radially between the outer shell and the heater probe.
  • the flex joint allows the heater probe to temporarily flex elastically out of axial alignment with the outer shell and the center electrode, while automatically biasing the heater probe back to, or substantially back to, its axially aligned position relative to the shell and center electrode upon release of the externally applied force. Accordingly, the glow plug can withstand inadvertent bending of the heater probe without becoming plastically deformed or otherwise damaged.
  • the flex joint has a reverse folded portion extending axially between the outer shell and heater probe.
  • the flex joint has a double
  • Figures 1 A- 1 D illustrates a test to assess the ability of a glow plug heater probe to withstand a force applied laterally to the heater probe tip
  • Figure 2 shows a glow plug constructed in accordance with one aspect of the invention.
  • Figures 3A-3G show enlarged cross-sectional views of various configurations of the area designated 3A-3G in Figure 2 in accordance with the invention.
  • DETAILED DESCRIPTION OF PRESENTLY PREFERRED EMBODIM ENTS [0001 1 ]
  • Figure 2 i llustrates a glow plug 10 constructed in accordance with one presently preferred embodiment of the invention.
  • the glow plug 10 has an annular outer metal shell 1 2 with an inner surface 13 bounding a through bore 14 which extends along a longitudinal central axis 15 of the shell 12 between a proximal end 17 and a distal end 19.
  • the metal shell 1 2 may be formed from any suitable metal, such as various grades of steel, and may also incorporate a plating or coating layer, such as a nickel or nickel alloy coating on an exterior, also referred to as outer surface 16, and the bore 14, to improve the resistance of shel l 1 2 to high temperature oxidation and corrosion.
  • the glow plug 10 also includes a heater assembly 1 8.
  • the heater assembly 1 8 has a heater probe 20 and a center electrode 22 attached to the heater probe 20.
  • an annular flex joint as shown in various configurations in Figures 3A-3G, and indicated as 24 in Figure 3A, fixes the heater probe 20 to the shell 12.
  • the flex joint 24 allows the heater probe 20 to temporarily flex elastically out of axial alignment with the longitudinal axis 1 5 relative to the outer shell 1 2 and the center electrode under an externally applied force (F) over a lateral displacement (D l ), while automatically biasing the heater probe 20 back to, or substantially back to, its axially aligned position relative to the shell 12 and center electrode 22 ( Figure I D) such that any residual displacement ( D2) is negated or negligible.
  • the heater probe 20 upon being bent out of axial alignment from the longitudinal axis 15 can return automatically back to axial alignment with the axis 1 5, and thus, can withstand inadvertent bending without becoming permanently or plastically deformed or otherwise damaged.
  • the flex joint 24 is preferably constructed of a material having a relatively low Young's modulus and high yield strength.
  • the material preferably is selected having a thermal expansion coefficient closely matched with the material of the heater probe 20, such as ovar, Thermospan, Incoloy 903, Inconel 718 or the like, to al low direct attachment of the flex joint 24 to the heater probe 20.
  • the flex joint 24 can be attached to the shel l 1 2 by an interference fit, brazing, or welding, for example, and to the heater probe 20 by brazing, particularly for ceramic probes, and by an interference fit, brazing or welding, particularly for metal probes.
  • the flex joint 24 extends between opposite free ends 26, 28, wherein one free end 26 extends radially outwardly from the axis 1 5 and is attached directly to the inner surface 1 3 of the shell 12 in a butt joint immediately adjacent the free distal end 19 of the shell 1 2.
  • the free end 19 is shown having an annular chamfered surface, also referred to as nose 42, that extends obliquely to the central axis 15 generally toward the proximal end 1 7 of the shell 12 to, or substantially to the outer surface 1 6 of the shell.
  • the flex joint 24 has a single reverse fold 30, with an annular leg 32 extending axially and generally parallel with the axis 15 from the free end 26 toward the center electrode 22 to the reverse fold 30 and another annular leg, also referred to as an annular collar 34, extending axially and generally parallel with the axis 15 from the reverse fold 30 toward a free end or tip 36 of the heater probe 20.
  • the leg 32 extends axially between the shell 12 and the collar 34 in detached relation therefrom with an annular gap or space 37 being formed between the leg 32 and shell 1 2 and an annular space being formed between the leg 32 and collar 34.
  • the collar 34 has an inner, radially inwardly facing annular surface 38 that is attached to an outer surface 40 of the heater probe 20.
  • the bond is formed via one of the mechanisms discussed above and extends substantially along the length of the collar 34, wherein the collar 34 extends from the reverse fold 30 within the through bore 14 of the shell 12 axially outwardly of the shell 1 2.
  • the length of the collar 34 is received in the through bore 14 and about 1 ⁇ 2 the length extends axially outwardly from the through bore 14.
  • the heater probe 20 when an external force is applied to the heater probe 20, such as shown in Figures 1 A- 1 D, the heater probe 20 is able to flex laterally relative to the axis 1 5 in an elastic mode of deformation such that the heater probe 20 is able to return automatically to, or substantially to its original non-flexed position in coaxial alignment with the axis 1 5.
  • the distance of lateral displacement permitted by the flex joint 24 without encountering permanent or plastic deformation of the heater probe 20 relati ve to the ax is 1 5 is about 1 .5 mm.
  • the relatively high degree of elastic deformation is provided by the areas of the flex joint 24 that are free and unattached from the heater probe 20 and shell 12, with particular regard to the leg 32.
  • FIG. 3B Another flex joint 124 constructed in accordance with the invention is shown in Figure 3B, wherein simi lar reference numerals, offset by a factor of 100, are used to identify like features as discussed above.
  • the flex joint 124 extends between opposite free ends 126, 1 28, wherein one free end 1 26 extends radially outwardly from the axis 1 1 5 and is everted over a chamfered nose 142 of a shell 1 12 with a surface 44 immediately adjacent the free end 126 being attached in bonded relation directly to the chamfered nose 1 42 and extending flush with or substantially flush with an outer surface 1 16 of the shell 1 12.
  • the flex joint 124 has a single reverse fold 130, with a pair of an annular legs 132, 1 32' extending generally axially and generally parallel to one another, although in a slight angular relation with the axis 1 1 5, from the reverse fold 1 30 toward a tip 1 36 of the heater probe 120.
  • the leg 1 32' transitions to a cylindrical collar 134 adjacent the nose 142, wherein the collar 134 is attached to an outer surface 140 of the heater probe as discussed above with regard to the collar 34.
  • the legs 1 32, 132' extend generally axial ly between the shell 1 12 and the heater probe 120 in detached relation therefrom with a pair of annular gaps or spaces 137, 137' being formed between the legs 132, 132' and shell 1 12 and heater probe 120, respectively, and an annular space 1 39 being formed between the legs 1 32, 1 32', wherein the spaces 1 37, 1 37', 139 are radially aligned with one another.
  • the collar 134 has an inner, radially inwardly facing surface 1 38 that is attached to the outer surface 140 of the heater probe 120. The bond is formed via one of the mechanisms discussed above and extends substantially along the length of the collar 134, wherein the collar 134 extends from adjacent the nose 142 axially away from the shell 1 12.
  • FIG. 3C Another flex joint 224 constructed in accordance with the invention is shown in Figure 3C, wherein similar reference numerals, offset by a factor of 200, are used to identify like features as discussed above.
  • the flex joint 224 is similar the flex joint 124, however, rather than having a lip everted over a nose of a shell 212, a surface 244 adjacent a free end 226 is attached to an inner surface 213 of the shell 212 adjacent the nose 242, with the free end 226 shown being flush with the nose 213, by way of example and without limitation.
  • the flex joint 224 is the same as the flex joint 124, including having a single reverse fold 230, with a pair of an annular legs 232, 232' extending generally axially in generally parallel relation with one another, although in a slight angular relation with the axis 21 5, from the reverse fold 230 toward a tip 236 of the heater probe 220.
  • the leg 232' transitions to a cylindrical collar 234, wherein the collar 134 is attached to an outer surface 240 of the heater probe 220.
  • a pair of annular gaps or spaces 237, 237' are formed between the legs 232, 232' and shell 21 2 and heater probe 220, respectively, and an annular space 239 is formed between the legs 232, 232'.
  • a radially inwardly facing surface 238 of the collar 234 is attached to the outer surface 240 of the heater probe 220, wherein the bond is formed via one of the mechanisms discussed above.
  • FIG. 3D Another flex joints nt 324 constructed in accordance with the invention is shown in Figure 3D, wherein simi lar reference numerals, offset by a factor of 300, are used to identi fy like features as discussed above.
  • the flex joint 324 is similar the flex joint 24 of Figure A, however, rather than having a free end 326 attached to an inner surface 3 13 of a shell 3 12, a radially outward facing surface 344 of a radially outer first leg, also referred to as outer collar 334', is attached to the inner surface 313 of the shell 312, while a radially inner second leg, also referred to as inner collar 334, is attached to an outer surface 340 of the heater probe 320 as discussed above for Figure 3A.
  • the outer collar 334' and inner collar 334 are attached along their full length to the respective inner surface 31 3 and outer surface 340.
  • the outer collar 334' provides the flex joint 324 with a pair of reverse folds 330, 330' with an annular third leg 332 extending axially and generally parallel with the axis 315.
  • the third leg 332 extends axially between the outer collar 334' and the inner collar 334 in detached, radially spaced relation therefrom.
  • An annular gap or space 337 is formed between the leg 332 and outer collar 334' and an annular space 339 is formed between the leg 332 and the inner collar 334.
  • leg 332 and outer collar 334' are spaced radially from one another and the leg 332 and the inner collar 334 are spaced radially from one another.
  • the collars 334', 334 and third leg 332 are in radially aligned configuration with one another forming a generally Z-shaped wall in axial cross-section such that the gaps 337, 339 are also radially aligned with one another.
  • the inner collar 334 is attached to the heater probe 320 as discussed above with regard to Figure 3 A.
  • FIG. 3E Another flex joint 424 constructed in accordance with the invention is shown in Figure 3E, wherein similar reference numerals, offset by a factor of 400, are used to identify like features as discussed above.
  • the flex joint 424 is similar the flex joint 324 of Figure 3D, however, rather than having the full length of an outer first leg, also referred to as outer collar 434', attached to an inner surface 413 of a shell 412, only a portion of the outer collar 434' immediately adjacent a free end 426 is attached to the inner surface 4 13, while a portion of the outer collar 434' adjacent a reverse fold 430' located adjacent and radially inwardly from a nose 442 remains detached radially inward from the inner surface 413 of the shell 412.
  • inner collar 434 rather than having the full length of an inner second leg, also referred to as inner collar 434, attached to an outer surface 440 of a heater probe 420, only a portion of the inner collar 434 immediately adjacent a free end 428 is attached to the outer surface 440, while a portion of the inner collar 434 adjacent a reverse fold 430 located between the shell 412 and the heater probe 420 remains detached from the outer surface 440 of the heater probe 420.
  • the outer collar 434' provides the flex joint 424 with a pair of reverse folds 430, 430' with an annular third leg 432 extending axially and generally parallel, though slightly angled with respect to an axis 41 5.
  • the third leg 432 extends axially between the outer collar 434' and the inner collar 434 in detached relation therefrom.
  • An annular gap or space 437 is formed between the third leg 432 and outer col lar 434' and an annular space 439 is formed between the third leg 432 and the inner collar 434.
  • the collars 434', 434 and third leg 432 are in radially aligned configuration with one another forming a generally Z-shaped wall in axial cross-section such that the gaps 437, 439 are also radially aligned with one another.
  • FIG. 3 F Another flex joint 524 constructed in accordance with the invention is shown in Figure 3 F, wherein simi lar reference numerals, offset by a factor of 500, are used to identi fy like features as discussed above.
  • the flex joint 524 has similarities to the flex joint 24 of Figure 1 , in that it extends between opposite free ends 526, 528, wherein one free end 526 extends radially outwardly from an axis 515 and is attached directly to an inner surface 5 13 of the shell 5 12 in a butt joint.
  • a leg 532 extends radially inwardly generally transverse to the axis 515 and transitions directly to a cylindrical leg portion, also referred to as collar 534.
  • the collar 534 extends axially outwardly from a distal end 5 19 of the shell 512 toward a tip 536 of the heater probe 520 and is fixed along its full axially extending length to an outer surface 540 of the heater probe 520 as discussed above with regard to the collar 34 of Figure 3A.
  • a reverse folded leg providing the flex joint 524 with it abi lity to flex angularly relative to the axis 51 5
  • the degree of elastic flex can be regulated by controlling the length of the leg 532, with the flex increasing and decreasing as the length is increased and decreased, respectively.
  • FIG. 3G Another flex joint 624 constructed in accordance with the invention is shown in Figure 3G, wherein similar reference numerals, offset by a factor of 600, are used to identi y like features as discussed above.
  • the flex joint 624 is similar to the flex joint 524, having opposite free ends 626, 628, wherein one free end 626 extends radially outwardly from an axis 61 5 and is attached directly to an inner surface 61 3 of the shell 6 ! 2 in a butt joint.
  • a leg 632 extends radially inwardly generally transverse to the axis 51 5 and transitions directly to a cylindrical second end, also referred to as collar 634.
  • the collar 634 extends axially toward a tip 636 of the heater probe 620 and is fixed to an outer surface 640 of the heater probe 620 via one of the mechanisms discussed above with regard to the collar 34 of Figure 3A. However, rather than the entire length of the collar 634 being attached to the heater probe 620, as with the collar 534 discussed above, only a distal portion of the collar 634 immediately adjacent the free end 628 is attached to the heater probe 620. An axially proximal portion of the collar 634 immediately adjacent the leg 632 remains spaced radially from and detached from the heater probe 620, with an annular space 637' preferably being formed between the collar 634 and the heater probe 620. Accordingly, an increase degree of angular elastic deflection is provided by the gap 637'.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measuring Oxygen Concentration In Cells (AREA)

Abstract

Cette invention concerne une bougie de préchauffage (10) comprenant une sonde d'élément chauffant (20) susceptible de présenter un défaut d'alignement axial par rapport à l'axe central (15) d'une gaine métallique extérieure (12) et d'une électrode centrale (22) et qui par la suite revient automatiquement sur sa configuration d'alignement axial sur l'axe central. La gaine extérieure comporte un trou traversant (14) le long de l'axe central. L'électrode centrale passe par le trou traversant et s'étend le long de l'axe central. La sonde de l'élément chauffant est reliée électriquement à l'électrode centrale dans le trou traversant et s'étend le long de l'axe central axialement et vers l'extérieur depuis l'extrémité distale (19) de la gaine. Une liaison souple annulaire (24) constitue la seul fixation de la gaine extérieure à la sonde de l'élément chauffant via une extrémité de cette liaison souple qui est fixée à la gaine extérieure adjacente à l'extrémité distale, l'autre extrémité de la liaison souple étant fixée à la sonde de l'élément chauffant.
PCT/US2011/029146 2010-03-19 2011-03-21 Bougie de préchauffage à liaison permanente de la pointe de sonde, résistant à un déplacement WO2011116366A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US31543910P 2010-03-19 2010-03-19
US61/315,439 2010-03-19

Publications (1)

Publication Number Publication Date
WO2011116366A1 true WO2011116366A1 (fr) 2011-09-22

Family

ID=44169117

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2011/029146 WO2011116366A1 (fr) 2010-03-19 2011-03-21 Bougie de préchauffage à liaison permanente de la pointe de sonde, résistant à un déplacement

Country Status (2)

Country Link
US (1) US20110240628A1 (fr)
WO (1) WO2011116366A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013164909A1 (fr) * 2012-05-02 2013-11-07 日本特殊陶業株式会社 Bougie de préchauffage équipée d'un capteur de pression
JP2013250014A (ja) * 2012-06-01 2013-12-12 Ngk Spark Plug Co Ltd 圧力センサ付きグロープラグ
EP2847566A1 (fr) * 2012-05-11 2015-03-18 Robert Bosch GmbH Membrane pour dispositif de mesure de pression

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8970228B2 (en) * 2012-05-31 2015-03-03 General Electric Company Rotational clearance measurement system and method of operation
US8912792B2 (en) * 2012-08-24 2014-12-16 Schweitzer Engineering Laboratories, Inc. Systems and methods for rotor angle measurement in an electrical generator
JP6030410B2 (ja) * 2012-11-02 2016-11-24 日本特殊陶業株式会社 グロープラグ及びグロープラグの製造方法
US10317467B2 (en) 2014-05-19 2019-06-11 Schweitzer Engineering Laboratories, Inc. Synchronous machine monitoring and determination of a loss-of-field event using time stamped electrical and mechanical data
US10253982B2 (en) * 2014-12-22 2019-04-09 Ngk Spark Plug Co., Ltd. Glow plug with pressure sensor
FR3043460B1 (fr) * 2015-11-05 2019-01-25 Continental Automotive France Embout anti-resonnance de cavitation et anti-suie pour capteur de pression d'un moteur a combustion interne
FR3043381B1 (fr) * 2015-11-11 2018-04-27 Autoliv Development Ab Volant de vehicule
US10063124B2 (en) 2015-12-10 2018-08-28 Schweitzer Engineering Laboratories, Inc. Shaft mounted monitor for rotating machinery
US9800055B2 (en) 2016-01-21 2017-10-24 Schweitzer Engineering Laboratories, Inc. Synchronization of generators using a common time reference
US10523150B2 (en) 2016-09-15 2019-12-31 Schweitzer Engineering Laboratories, Inc. Systems and methods for motor slip calculation using shaft-mounted sensors

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005090865A1 (fr) * 2004-03-16 2005-09-29 Robert Bosch Gmbh Bougie a crayon de prechauffage monte de façon elastique
JP2006010306A (ja) * 2004-05-26 2006-01-12 Toyota Central Res & Dev Lab Inc グロープラグ
FR2902518A1 (fr) * 2006-06-20 2007-12-21 Denso Corp Capteur de pression de combustion
DE102006059691A1 (de) * 2006-12-18 2008-06-19 Robert Bosch Gmbh Glühstiftkerze

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005090865A1 (fr) * 2004-03-16 2005-09-29 Robert Bosch Gmbh Bougie a crayon de prechauffage monte de façon elastique
JP2006010306A (ja) * 2004-05-26 2006-01-12 Toyota Central Res & Dev Lab Inc グロープラグ
FR2902518A1 (fr) * 2006-06-20 2007-12-21 Denso Corp Capteur de pression de combustion
DE102006059691A1 (de) * 2006-12-18 2008-06-19 Robert Bosch Gmbh Glühstiftkerze

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013164909A1 (fr) * 2012-05-02 2013-11-07 日本特殊陶業株式会社 Bougie de préchauffage équipée d'un capteur de pression
JP5723461B2 (ja) * 2012-05-02 2015-05-27 日本特殊陶業株式会社 圧力センサ付きグロープラグ
US9068549B2 (en) 2012-05-02 2015-06-30 Ngk Spark Plug Co., Ltd. Glow plug with pressure sensor
EP2846095A4 (fr) * 2012-05-02 2015-12-30 Ngk Spark Plug Co Bougie de préchauffage équipée d'un capteur de pression
KR101614625B1 (ko) 2012-05-02 2016-04-21 니뽄 도쿠슈 도교 가부시키가이샤 압력 센서가 형성된 글로우 플러그
EP2847566A1 (fr) * 2012-05-11 2015-03-18 Robert Bosch GmbH Membrane pour dispositif de mesure de pression
DE102012207856B4 (de) 2012-05-11 2021-12-09 Robert Bosch Gmbh Membran für eine Druckmesseinrichtung
JP2013250014A (ja) * 2012-06-01 2013-12-12 Ngk Spark Plug Co Ltd 圧力センサ付きグロープラグ

Also Published As

Publication number Publication date
US20110240628A1 (en) 2011-10-06

Similar Documents

Publication Publication Date Title
WO2011116366A1 (fr) Bougie de préchauffage à liaison permanente de la pointe de sonde, résistant à un déplacement
US8003917B2 (en) Seal for a glow plug
US9822821B2 (en) Rotating shaft coupling assembly
US7533633B2 (en) Establishing a connection between steam generator heating surfaces and a collector and/or distributor
JP5102530B2 (ja) グロープラグ及びその製造方法
EP2472181B1 (fr) Bougie de préchauffage à manchon capteur d'efforts entourant le doigt chauffant hors chambre de combustion
JPWO2005080877A1 (ja) グロープラグ
EP2347118A1 (fr) Bougie de préchauffage munie d une sonde d élément chauffant métallique
EP2469256B1 (fr) Bougie de préchauffage dotée d'un capteur de charge et d'un lien blindé avec le capteur
JP2000356343A (ja) セラミックヒータ型グロープラグ
US9091443B2 (en) Glow plug and method for manufacturing glow plug
EP2469169A1 (fr) Bougie de préchauffage dotée d'un manchon pouvant accueillir l'élément de chauffage munie d'une partie distale tournée vers le haut
EP2837886A1 (fr) Bougie
EP2469170B1 (fr) Bougie de préchauffage à manchon capteur d'efforts relié au corps de bougie par une liaison élastiquement déformable
JP2004132688A (ja) グロープラグ
JP2000088167A (ja) 分岐管の接続構造
EP2469171A1 (fr) Bougie de préchauffage dotée d'un corps de bougie formée de plusieurs tubes placés de bout en bout
JP2007085577A (ja) 燃焼圧センサ付きグロープラグ
JP4921039B2 (ja) スパークプラグ
JP2010127476A (ja) グロープラグ
JP2007107456A (ja) 燃料噴射弁用防熱スリーブ
JP3470460B2 (ja) ホースの継手構造体及びこれに用いられるホース継手
JP4885572B2 (ja) シースヒータの製造方法及びグロープラグの製造方法
JP6275523B2 (ja) グロープラグ
JP5301635B2 (ja) スパークプラグ

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11712386

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11712386

Country of ref document: EP

Kind code of ref document: A1