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EP1660817B1 - Bougie de prechauffage a element de contact specialement encastre - Google Patents

Bougie de prechauffage a element de contact specialement encastre Download PDF

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Publication number
EP1660817B1
EP1660817B1 EP04738757.6A EP04738757A EP1660817B1 EP 1660817 B1 EP1660817 B1 EP 1660817B1 EP 04738757 A EP04738757 A EP 04738757A EP 1660817 B1 EP1660817 B1 EP 1660817B1
Authority
EP
European Patent Office
Prior art keywords
contact element
housing
glow plug
sheathed
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.)
Expired - Lifetime
Application number
EP04738757.6A
Other languages
German (de)
English (en)
Other versions
EP1660817A1 (fr
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
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
Publication of EP1660817A1 publication Critical patent/EP1660817A1/fr
Application granted granted Critical
Publication of EP1660817B1 publication Critical patent/EP1660817B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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 invention relates to a glow plug for a fuel engine, consisting of a plug housing, arranged on the plug housing connecting part for the electric current and a pin heater, usually a tube with an embedded heating element.
  • the connection part and the heating element are electrically coupled via a connection bolt and a contact element.
  • the contact element forms the so-called plus contact with the connection bolt and the connection region of the pin heater inside the housing.
  • For fixing the contact element within the housing of the glow plug and its insulation from the Housings are known from the prior art, different methods.
  • the invention particularly relates to embodiments in which the contact is made by an elastic conduit member, such as a graphite tablet.
  • a glow plug is off DE 100 20 328 A1 known.
  • a contact element is arranged between the connecting bolt and the heating element, which is formed by said graphite tablet.
  • a ceramic sleeve is arranged between the contact element and the housing.
  • the ceramic sleeve acts simultaneously as a clamping sleeve.
  • the ceramic adapter sleeve encloses the connection pin and the graphite tablet and thus prevents contact with the housing. At the same time they ensure that the contact element remains in a defined position, in which a good contact with the pin heater, or with the heating element is ensured.
  • EP 798 515 A2 a glow plug for a fuel engine with a housing, a arranged in the housing connection part for the electric current and a heating element embedded in a pipe known.
  • the connector is led out of the housing and electrically insulated with a plastic sleeve relative to the housing.
  • the object of the invention is to propose a glow plug, which shows a stable fixation of the contact element and in which the fixation and isolation of the contact element can be produced inexpensively.
  • plastic clamping sleeve By using a plastic clamping sleeve, a very simple electrical insulation with respect to the housing is achieved.
  • the plastic sleeves have the advantage over ceramic sleeves that they are simpler and therefore less expensive to produce. This is especially true for sleeves with low wall thickness, as they are often needed in glow plugs.
  • the plastic sleeve In contrast to ceramic materials, the plastic sleeve has an elasticity in the radial and / or longitudinal direction. The elasticity increases the robustness of the component and reduces the probability of breakage during assembly or loads during operation.
  • the plastic sleeve acts as a clamping sleeve, by applying to the inner wall of the housing.
  • Plastics can provide good insulation even with small wall thicknesses and are at the same time robust enough to withstand further processing steps. If, for example, a support tube surrounding the heating element is connected to the housing, which is done by pressing, hammering, soldering or welding, strong forces sometimes also act on the plastic sleeve.
  • Plastic sleeves can be easily manufactured in different dimensions and shapes.
  • the contact element with the largest possible surfaces must be coupled to the heating element and the connecting bolt.
  • a tubular component such as the glow plug therefore, offers a cylindrical shape of the contact element.
  • the plastic sleeve may be formed in one piece or in a further advantageous embodiment, also in several parts. The individual parts can then be combined in the modular principle for glow plugs of various types.
  • Fig. 1 are the invention of the underlying parts of a glow plug 1 shown.
  • This glow plug 1 consists of a plug housing 2 and a connection area 3 of a pin heater 4, not shown.
  • a connecting bolt 5 is provided within the housing 2.
  • a contact element 6 is provided between these two elements. This is preferably elastic.
  • a contact element 6 may be, for example, a graphite tablet.
  • a plastic sleeve 7 is inserted into the housing 2 according to the invention, within which the connection pin 4 is arranged.
  • This plastic sleeve 7 can be easily and inexpensively finished with a small wall thickness 8.
  • connection region 3 a recess 9 is provided into which the contact element 6 is at least partially insertable.
  • the sleeve 7 is preferably formed in one piece. It is designed as a clamping sleeve and thus lays against the inner wall 10 of the 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)

Claims (4)

  1. Bougie de préchauffage pour un moteur à combustion interne, comprenant un boîtier (2), une partie de raccordement pour le courant électrique disposée sur le boîtier (2) ainsi qu'un tube avec un élément chauffant encastré, la partie de raccordement et l'élément chauffant étant accouplés électriquement par le biais d'un boulon de raccordement (5) et d'un élément de contact (6), et le boulon de raccordement (5) et l'élément de contact (6) étant entourés au moins en partie par un manchon de serrage électriquement isolant à l'intérieur du boîtier (2), l'élément de contact (6) ayant une forme cylindrique, caractérisée en ce que l'enveloppe de l'élément de contact (6) est complètement entourée par un manchon en plastique (7) et en ce que le manchon en plastique (7) possède des propriétés élastiques et s'applique en tant que manchon de serrage contre la paroi interne du boîtier (2).
  2. Bougie de préchauffage selon la revendication 1,
    caractérisée en ce que le manchon en plastique (7) est réalisé en plusieurs parties.
  3. Bougie de préchauffage selon la revendication 1,
    caractérisée en ce que l'élément de contact (6) est élastique.
  4. Bougie de préchauffage selon les revendications 1
    ou 3, caractérisée en ce que l'élément de contact (6) est une tablette de graphite.
EP04738757.6A 2003-08-28 2004-06-23 Bougie de prechauffage a element de contact specialement encastre Expired - Lifetime EP1660817B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10339641A DE10339641A1 (de) 2003-08-28 2003-08-28 Glühstiftkerze mit besonders eingebettetem Kontaktelement
PCT/DE2004/001308 WO2005026619A1 (fr) 2003-08-28 2004-06-23 Bougie de prechauffage a element de contact specialement encastre

Publications (2)

Publication Number Publication Date
EP1660817A1 EP1660817A1 (fr) 2006-05-31
EP1660817B1 true EP1660817B1 (fr) 2017-03-15

Family

ID=34202148

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04738757.6A Expired - Lifetime EP1660817B1 (fr) 2003-08-28 2004-06-23 Bougie de prechauffage a element de contact specialement encastre

Country Status (7)

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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3025153B1 (fr) * 2014-09-01 2016-12-09 Bosch Gmbh Robert Bougie de prechauffage
DE102014220036A1 (de) 2014-10-02 2016-04-07 Robert Bosch Gmbh Glühstiftkerze

Family Cites Families (11)

* 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
DE4335292A1 (de) * 1993-10-15 1995-04-20 Beru Werk Ruprecht Gmbh Co A Glühkerze
IT1285043B1 (it) * 1996-03-29 1998-06-03 Cooper Ind Italia Candela riscaldante ad incandescenza, particolarmente per motori a ciclo diesel
JPH10208853A (ja) * 1996-11-19 1998-08-07 Ngk Spark Plug Co Ltd セラミックヒータ、およびその製造方法
DE10020329A1 (de) * 1999-08-27 2001-03-22 Bosch Gmbh Robert Keramische Glühstiftkerze
ATE280928T1 (de) * 1999-08-27 2004-11-15 Bosch Gmbh Robert Keramische glühstiftkerze
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
DE60000067T2 (de) * 2000-08-11 2002-07-18 Federal-Mogul Ignition S.R.L., Mailand/Milano Glühkerze für Brennkraftmaschinen
US7115836B2 (en) * 2004-06-29 2006-10-03 Ngk Spark Plug Co., Ltd. Glow plug

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
US20070084845A1 (en) 2007-04-19
DE10339641A1 (de) 2005-03-24
EP1660817A1 (fr) 2006-05-31
JP2006528761A (ja) 2006-12-21
BRPI0413442A (pt) 2006-10-17
KR20060125690A (ko) 2006-12-06
WO2005026619A1 (fr) 2005-03-24

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