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US20070084845A1 - Sheated-element glow plug having a particularly embedded contact element - Google Patents

Sheated-element glow plug having a particularly embedded contact element Download PDF

Info

Publication number
US20070084845A1
US20070084845A1 US10/569,220 US56922004A US2007084845A1 US 20070084845 A1 US20070084845 A1 US 20070084845A1 US 56922004 A US56922004 A US 56922004A US 2007084845 A1 US2007084845 A1 US 2007084845A1
Authority
US
United States
Prior art keywords
sheathed
glow plug
contact element
housing
plastic sleeve
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.)
Abandoned
Application number
US10/569,220
Other languages
English (en)
Inventor
Christoph Haluschka
Rainer Bach
Peter Sossinka
Alexander Klonczynski
Laurent Jeannel
Andreas Gaiser
Susanne Blank
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
Individual
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 Individual filed Critical Individual
Assigned to ROBERT BOSCH GMBH reassignment ROBERT BOSCH GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BLANK, SUSANNE, KLONCZYNSKI, ALEXANDER, GAISER, ANDREAS, HALUSCHKA, CHRISTOPH, JEANNEL, LAURENT, SOSSINKA, PETER, BACH, RAINER
Publication of US20070084845A1 publication Critical patent/US20070084845A1/en
Abandoned legal-status Critical Current

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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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P19/00—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition

Definitions

  • the present invention relates to a sheathed-element glow plug for an internal combustion engine made up of a plug housing, a connection part for the electrical current which is situated on the plug housing as well as a sheathed-element heater, which is usually in the form of a tube including an embedded heating element.
  • the connecting part and the heating element are electrically coupled by a terminal pin and a contact element.
  • the contact element together with the terminal pin and the connection area of the sheathed-element heater in the housing interior forms the positive contact.
  • Various methods are known from the related art for securing the contact element within the housing of the sheathed-element glow plug and insulating it from the housing.
  • sheathed-element glow plugs having a small diameter are requested. Since the electrical properties are predetermined by the sheathed-element heater and the terminal pins, or their dimensions are predetermined, little space remains between the terminal pin and housing.
  • the clamping sleeves must therefore be made using a thin wall, which in the case of ceramic materials is associated with high manufacturing complexity and costs.
  • the present invention relates in particular to embodiments in which the contact is produced by an elastic conduction element such as a graphite tablet.
  • Ceramic clamping sleeves are used in these embodiments for insulation and fixation. These sleeves surround the terminal pin and the graphite tablet and thus prevent contact with the housing. Simultaneously, they keep the contact element in a defined position, thus ensuring a good contact with the sheathed-element heater, i.e., the heating element.
  • An object of the present invention is to provide a sheathed-element glow plug having a solidly secured contact element, it being possible to secure and insulate the contact element cost-effectively.
  • the object may be achieved by surrounding the terminal pin and the contact element at least partially by an electrically insulating plastic sleeve within the housing.
  • a sleeve preferably a plastic clamping sleeve
  • plastic sleeves have the advantage that it is possible to manufacture them more simply and accordingly more cost-effectively. This applies in particular to sleeves having thin walls as is frequently needed in sheathed-element glow plugs.
  • plastics are capable of producing a good insulation and are simultaneously robust enough to be able to withstand additional processing steps. If, for example, a supporting tube surrounding the housing is bonded to the housing, which may be accomplished by pressing, swaging, soldering or welding, often strong forces also act on the plastic sleeve.
  • Plastic sleeves may be easily manufactured in various sizes and shapes.
  • An advantageous embodiment is to manufacture the plastic sleeve as a clamping sleeve.
  • the largest possible surfaces of the contact element must be coupled to the heating element and the terminal pins. For that reason, a cylindrical shape of the contact element is provided for a tubular component such as the sheathed-element glow plug. In order to ensure adequate insulation from the housing, the plastic sleeve must therefore completely surround the cylinder sheathing.
  • plastics having elastic properties may also be provided.
  • the plastic sleeve has elasticity in the radial and/or longitudinal direction. The elasticity increases the robustness of the component and reduces the probability of fracture during assembly or under loads during operation.
  • the plastic sleeve may be of one piece or, in another advantageous embodiment, it may also be formed from a plurality of pieces. The individual parts may then be combined for sheathed-element glow plugs of different types using the principle of modularity.
  • FIG. 1 Shows a schematic sectional representation of a part of a sheathed-element glow plug.
  • FIG. 1 The parts of a sheathed-element glow plug 1 on which the present invention is based are shown in FIG. 1 .
  • This sheathed-element glow plug 1 is made up of a plug housing 2 and a connection area 3 of a sheathed-element heater 4 , which is not shown in greater detail.
  • a terminal pin 5 is provided within housing 2 .
  • a contact element 6 is provided between these two elements.
  • This contact element is preferably elastic.
  • a contact element 6 of this type may be, for example, a graphite tablet.
  • a plastic sleeve 7 is inserted into housing 2 , terminal pin 4 being situated within the plastic sleeve.
  • This plastic sleeve 7 having a thin wall 8 may be produced simply and cost-effectively.
  • a recess 9 is provided in connection area 3 into which contact element 6 is at least partially insertable.
  • Sleeve 7 is preferably designed to be of one piece. It is designed as a clamping sleeve and is thus in contact with inside wall 10 of housing 2 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
US10/569,220 2003-08-28 2004-06-23 Sheated-element glow plug having a particularly embedded contact element Abandoned US20070084845A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10339641.1 2003-08-28
DE10339641A DE10339641A1 (de) 2003-08-28 2003-08-28 Glühstiftkerze mit besonders eingebettetem Kontaktelement
PCT/DE2004/001308 WO2005026619A1 (de) 2003-08-28 2004-06-23 Glühstiftkerze mit besonders eingebettetem kontaktelement

Publications (1)

Publication Number Publication Date
US20070084845A1 true US20070084845A1 (en) 2007-04-19

Family

ID=34202148

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/569,220 Abandoned US20070084845A1 (en) 2003-08-28 2004-06-23 Sheated-element glow plug having a particularly embedded contact element

Country Status (7)

Country Link
US (1) US20070084845A1 (de)
EP (1) EP1660817B1 (de)
JP (1) JP2006528761A (de)
KR (1) KR20060125690A (de)
BR (1) BRPI0413442A (de)
DE (1) DE10339641A1 (de)
WO (1) WO2005026619A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3025153A1 (fr) * 2014-09-01 2016-03-04 Bosch Gmbh Robert Bougie de prechauffage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014220036A1 (de) 2014-10-02 2016-04-07 Robert Bosch Gmbh Glühstiftkerze

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5589091A (en) * 1993-10-15 1996-12-31 Beru Ruprecht Gmbh & Co. Kg Glow plug with prestressed contact surfaces
US6013898A (en) * 1996-11-19 2000-01-11 Ngk Spark Plug Co., Ltd. Ceramic heater for a glow plug having tungsten electrode wires with metal coating
US6459072B1 (en) * 2000-08-11 2002-10-01 Federal-Mogul Ignition Srl Glow plug for internal combustion engines
US6660970B1 (en) * 1999-08-27 2003-12-09 Robert Bosch Gmbh Ceramic sheathed element glow plug
US6759631B1 (en) * 1999-08-27 2004-07-06 Robert Bosch Gmbh Ceramic sheathed-element glow plug with electrically conductive powder pellet contacting element and method for making
US7115836B2 (en) * 2004-06-29 2006-10-03 Ngk Spark Plug Co., Ltd. Glow plug

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3231781A1 (de) * 1982-08-26 1984-03-01 Robert Bosch Gmbh, 7000 Stuttgart Gluehkerze fuer brennkraftmaschinen
DE8427789U1 (de) * 1984-09-21 1986-01-23 Robert Bosch Gmbh, 7000 Stuttgart Glühstiftkerze für Brennkraftmaschinen
JPS62731A (ja) * 1985-06-27 1987-01-06 Jidosha Kiki Co Ltd デイ−ゼルエンジン用グロ−プラグ
IT1285043B1 (it) * 1996-03-29 1998-06-03 Cooper Ind Italia Candela riscaldante ad incandescenza, particolarmente per motori a ciclo diesel
DE10020329A1 (de) * 1999-08-27 2001-03-22 Bosch Gmbh Robert Keramische Glühstiftkerze

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5589091A (en) * 1993-10-15 1996-12-31 Beru Ruprecht Gmbh & Co. Kg Glow plug with prestressed contact surfaces
US6013898A (en) * 1996-11-19 2000-01-11 Ngk Spark Plug Co., Ltd. Ceramic heater for a glow plug having tungsten electrode wires with metal coating
US6660970B1 (en) * 1999-08-27 2003-12-09 Robert Bosch Gmbh Ceramic sheathed element glow plug
US6759631B1 (en) * 1999-08-27 2004-07-06 Robert Bosch Gmbh Ceramic sheathed-element glow plug with electrically conductive powder pellet contacting element and method for making
US6459072B1 (en) * 2000-08-11 2002-10-01 Federal-Mogul Ignition Srl Glow plug for internal combustion engines
US7115836B2 (en) * 2004-06-29 2006-10-03 Ngk Spark Plug Co., Ltd. Glow plug

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3025153A1 (fr) * 2014-09-01 2016-03-04 Bosch Gmbh Robert Bougie de prechauffage
WO2016034399A1 (de) * 2014-09-01 2016-03-10 Robert Bosch Gmbh Glühkerze

Also Published As

Publication number Publication date
EP1660817A1 (de) 2006-05-31
JP2006528761A (ja) 2006-12-21
EP1660817B1 (de) 2017-03-15
BRPI0413442A (pt) 2006-10-17
KR20060125690A (ko) 2006-12-06
DE10339641A1 (de) 2005-03-24
WO2005026619A1 (de) 2005-03-24

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Legal Events

Date Code Title Description
AS Assignment

Owner name: ROBERT BOSCH GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HALUSCHKA, CHRISTOPH;BACH, RAINER;SOSSINKA, PETER;AND OTHERS;REEL/FRAME:018592/0087;SIGNING DATES FROM 20060204 TO 20060504

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE