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WO2001069135A1 - Bougie crayon de prechauffage pour un moteur a combustion interne - Google Patents

Bougie crayon de prechauffage pour un moteur a combustion interne Download PDF

Info

Publication number
WO2001069135A1
WO2001069135A1 PCT/DE2001/000198 DE0100198W WO0169135A1 WO 2001069135 A1 WO2001069135 A1 WO 2001069135A1 DE 0100198 W DE0100198 W DE 0100198W WO 0169135 A1 WO0169135 A1 WO 0169135A1
Authority
WO
WIPO (PCT)
Prior art keywords
sealing element
glow plug
sealing
metallic housing
longitudinal axis
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.)
Ceased
Application number
PCT/DE2001/000198
Other languages
German (de)
English (en)
Inventor
Steffen Carbon
Christoph Kern
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 BR0109234-0A priority Critical patent/BR0109234A/pt
Priority to JP2001567980A priority patent/JP2003527557A/ja
Priority to KR1020027012000A priority patent/KR20020077534A/ko
Priority to DE50105537T priority patent/DE50105537D1/de
Priority to HU0204408A priority patent/HU225190B1/hu
Priority to PL01357593A priority patent/PL357593A1/xx
Priority to EP01911365A priority patent/EP1266179B1/fr
Publication of WO2001069135A1 publication Critical patent/WO2001069135A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • 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 type of the independent claim.
  • a glow plug for an internal combustion engine with a metallic housing and a coaxial connecting bolt is already known, the interior of the metallic housing being sealed from the exterior by means of a sealing element.
  • Such a sealing element is designed according to the prior art as an O-ring or a hose ring.
  • the glow plug according to the invention with the features of the independent claim has the advantage that additional security is achieved when the temperatures in the area of the sealing element reduce the pretension.
  • the sealing element to form two Sealing edges in cross section has first circular areas which are arranged in pairs one above the other.
  • Such a sealing element enables a linear seal and a good adaptation of the shape of the sealing element to the space between the connecting bolt and the housing
  • the cross section of the sealing element is designed in such a way that it has two rectangular regions arranged one above the other.
  • Such a seal ensures a flat seal by means of two sealing edges lying one above the other. It is advantageous to round off the corners of the rectangular areas, since material of the seal can be saved in this way. A further saving in material and a simpler manufacture can advantageously be achieved in that the cross section of the sealing element is formed from two second circular regions arranged one above the other.
  • Figure 1 shows a glow plug according to the invention in longitudinal section
  • FIG. 2 to 5 different embodiments of a sealing element of a glow plug according to the invention in cross section.
  • a glow plug according to the invention is shown schematically in longitudinal section.
  • the glow plug has a metallic housing 3 which is radially symmetrical and has a longitudinal axis 2.
  • the metallic Housing 3 is arranged coaxially at the end remote from the combustion chamber and is connected to a glow plug 7 on the combustion chamber side.
  • This glow plug 7 is also arranged coaxially in the metallic housing 3.
  • Such a glow plug is arranged in an internal combustion engine such that the end of the glow plug 7 on the combustion chamber side projects into the combustion chamber. With the help of electric current, which reaches the glow plug 7 via the connecting bolt 5, the end of the glow plug 7 on the combustion chamber side is heated, so that the temperature required to ignite a fuel mixture is reached in the combustion chamber.
  • the glow plug shown also has an insulating washer 9, the connecting bolt 5 being guided through the insulating washer 9.
  • the insulating disk 9 is arranged at the end of the metallic housing 3 remote from the combustion chamber between the metallic housing 3 and the connecting bolt 5 in such a way that the metallic housing 3 and the connecting bolt 5 are electrically insulated from one another.
  • the insulating washer 9 is fixed in position by a round nut 11 guided over the connecting bolt.
  • a sealing element 13 At the end of the insulating disk 9 on the combustion chamber side there is a sealing element 13 in the space between the connecting bolt and the metallic housing, which is ring-shaped and extends over the entire circumference of the connecting bolt.
  • the sealing element 13 seals the interior of the metallic
  • the sealing element 13 has two sealing edges which are arranged one above the other in the direction of the longitudinal axis 2 and which bear against the outer surface 6 of the connecting bolt. Furthermore, the sealing element 13 has at least two sealing edges which are arranged one above the other in the direction of the longitudinal axis 2 and which bear against the inner surface 4 of the housing. The at least two sealing edges of the sealing element 13 arranged one above the other in the direction of the longitudinal axis 2 ensure that at high temperatures at which the pretensioning of the components occurs against which the sealing element 13 abuts, additional security is achieved.
  • the cross section of the sealing element 13 has four first circular regions 18 which are arranged in pairs next to one another.
  • the pairs of the first circular regions 18 are also arranged one above the other in the direction of the longitudinal axis 2.
  • a sealing edge is formed on each first circular region 18, specifically on the pair of first circular regions 18, which is located in the drawing above, a first sealing edge 15, 15 'and on the pair, which is located in the drawing below, a second one at a time
  • Sealing edge 16, 16 ⁇ The inner sealing edges of the sealing element 15 ⁇ and 16 ⁇ rest on the outer surface 6 of the connecting bolt 5 and the outer sealing edges 15 and 16 on the inner surface 4 of the metallic housing 3.
  • sealing edges one above the other through the sealing element 13 in cross section through four circular areas 18 ensures that double security for the seal is achieved even if the pretensioning of the components surrounding the sealing element 13 is reduced due to the temperature.
  • FIG 3 another embodiment of a sealing element 13 of a glow plug according to the invention is shown schematically in cross section.
  • the cross section of the sealing element 13 is designed here in such a way that two rectangular regions 20 are arranged one above the other in the direction of the longitudinal axis.
  • the corners of the rectangular areas can be rounded.
  • a rather flat seal is achieved with each sealing edge 15 and 16.
  • the arrangement of the rectangular areas 20 one above the other ensures that there are two sealing edges which offer additional security with a temperature-related reduction in the preload.
  • the sealing element 13 can be implemented as shown in FIG.
  • Figure 4 the cross section of a sealing element of a glow plug according to the invention is shown schematically in cross section.
  • two first circular areas 18 are arranged next to one another and a rectangular area 20 is arranged above these two first circular areas 18.
  • the corners of the rectangular area 20 are rounded.
  • a combination of a linear and a flat seal can thus be achieved.
  • the sealing element 13 can also be designed such that the two first circular regions 18 are arranged above the rectangular region 20.
  • a further exemplary embodiment of a sealing element 13 of a glow plug according to the invention is shown schematically in cross section in FIG.
  • two second circular areas 23 are arranged one above the other in the direction of the longitudinal axis.
  • Each second circular region 23 has sealing edges laterally inside (provided with the reference symbols 15 ⁇ and 16 v ) and outside (provided with the reference symbols 15 and 16), which enable the interior of the metallic housing 3 to be sealed off from the exterior.
  • the inner sealing edges 15 and 16 lie on the outer surface 6 of the connecting bolt 5 and the outer sealing edges 15 and 16 on the inner Surface 4 of the metallic housing 3.
  • the sealing element 13 designed as shown in FIG. 5 has two sealing edges arranged one above the other in the direction of the longitudinal axis 2 on the inside and on the outside, which offer additional security when the pretension is reduced due to temperature.
  • the sealing element 13 can also be designed such that it has more than two sealing edges lying one above the other in the direction of the longitudinal axis, each of which abuts the inner surface 4 of the metallic housing 3 and the outer surface 6 of the connecting bolt 5 ,
  • a sealing element can have further pairs of first circular areas 18 or rectangular areas 20 or second circular areas 23, which in the direction of the longitudinal axis 2 are above or below those shown in FIGS Cross-sectional areas are arranged.
  • the sealing element 13 can also be designed such that the at least two superimposed sealing edges 15, 16 and 15 16 ⁇ , as shown in Figure 6 are displaced in perpendicular to the direction of the longitudinal axis 2 to each other. This means that the sealing edge 15 is displaced outwards to the sealing edge 16, in relation to the direction perpendicular to the longitudinal axis 2. Similarly, the sealing edge 15 ⁇ is displaced inwards to the sealing edge 16 ⁇ .
  • the sealing edges 15 and 16 or 15 'and 16 are still arranged one above the other.
  • the rectangular area 20, which forms the sealing edges 15 and 15 ⁇ has a greater extent in the direction perpendicular to the longitudinal axis than the rectangular area that forms the sealing edges 16 and l ⁇ ⁇ .
  • the rectangular area 20, which forms the sealing edges 15 and 15 ⁇ has a larger area than the rectangular area 20, which forms the sealing edges 16 and 16 ⁇ .
  • the formation of sealing edges 15 and 16 or 15 ⁇ and 16 ⁇ displaced relative to one another perpendicular to the longitudinal axis can also be achieved with first and second circular areas or a combination of rectangular areas and first or second circular areas.

Landscapes

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

Abstract

L'invention concerne une bougie crayon de préchauffage pour un moteur à combustion interne, qui comporte un boîtier métallique (3) présentant un axe longitudinal (2) et un boulon d'assemblage s'étendant coaxialement (5), un élément d'étanchéité annulaire (13) étant placé entre le boîtier métallique (3) et le boulon d'assemblage (5). L'élément d'étanchéité (13) rend l'intérieur du boîtier métallique (3) étanche par rapport à l'extérieur ; il présente au moins deux arêtes d'étanchéité (15, 16 et 15', 16') s'appuyant respectivement contre la surface interne (4) du boîtier métallique et contre la surface externe (6) du boulon d'assemblage.
PCT/DE2001/000198 2000-03-14 2001-01-18 Bougie crayon de prechauffage pour un moteur a combustion interne Ceased WO2001069135A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
BR0109234-0A BR0109234A (pt) 2000-03-14 2001-01-18 Vela de pino incandescente para um motor de combustão interna
JP2001567980A JP2003527557A (ja) 2000-03-14 2001-01-18 内燃機関のためのシース形グロープラグ
KR1020027012000A KR20020077534A (ko) 2000-03-14 2001-01-18 내연 기관용 시이드형 글로우 플러그
DE50105537T DE50105537D1 (de) 2000-03-14 2001-01-18 Glühstiftkerze für eine brennkraftmaschine
HU0204408A HU225190B1 (en) 2000-03-14 2001-01-18 Sheathed element glow plug for an internal combustion engine
PL01357593A PL357593A1 (en) 2000-03-14 2001-01-18 Sheathed element glow plug for an internal combustion engine
EP01911365A EP1266179B1 (fr) 2000-03-14 2001-01-18 Bougie crayon de prechauffage pour un moteur a combustion interne

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10012266A DE10012266A1 (de) 2000-03-14 2000-03-14 Glühstiftkerze für eine Brennkraftmaschine
DE10012266.3 2000-03-14

Publications (1)

Publication Number Publication Date
WO2001069135A1 true WO2001069135A1 (fr) 2001-09-20

Family

ID=7634597

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2001/000198 Ceased WO2001069135A1 (fr) 2000-03-14 2001-01-18 Bougie crayon de prechauffage pour un moteur a combustion interne

Country Status (10)

Country Link
EP (1) EP1266179B1 (fr)
JP (1) JP2003527557A (fr)
KR (1) KR20020077534A (fr)
BR (1) BR0109234A (fr)
CZ (1) CZ20023021A3 (fr)
DE (2) DE10012266A1 (fr)
ES (1) ES2238427T3 (fr)
HU (1) HU225190B1 (fr)
PL (1) PL357593A1 (fr)
WO (1) WO2001069135A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7329836B2 (en) * 2006-03-30 2008-02-12 Ngk Spark Plug Co., Ltd. Glow plug with O-ring seal
CN101342501B (zh) * 2008-07-25 2011-11-16 宁波伊尔卡密封件有限公司 密封塞
KR101638670B1 (ko) * 2011-01-25 2016-07-11 니혼도꾸슈도교 가부시키가이샤 글로 플러그

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986001878A1 (fr) * 1984-09-21 1986-03-27 Robert Bosch Gmbh Bougie-crayon de chauffage pour moteurs a combustion interne
EP0745808A1 (fr) * 1995-05-31 1996-12-04 Cooper Industries Italia S.p.A. Dispositif pour rendre étanche et pour nettoyage automatique d'une bougie-crayon à incandescence
JPH0945464A (ja) * 1995-07-31 1997-02-14 Ngk Spark Plug Co Ltd グロープラグ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986001878A1 (fr) * 1984-09-21 1986-03-27 Robert Bosch Gmbh Bougie-crayon de chauffage pour moteurs a combustion interne
EP0745808A1 (fr) * 1995-05-31 1996-12-04 Cooper Industries Italia S.p.A. Dispositif pour rendre étanche et pour nettoyage automatique d'une bougie-crayon à incandescence
JPH0945464A (ja) * 1995-07-31 1997-02-14 Ngk Spark Plug Co Ltd グロープラグ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 06 30 June 1997 (1997-06-30) *

Also Published As

Publication number Publication date
EP1266179A1 (fr) 2002-12-18
DE10012266A1 (de) 2001-09-20
DE50105537D1 (de) 2005-04-14
EP1266179B1 (fr) 2005-03-09
BR0109234A (pt) 2003-06-03
KR20020077534A (ko) 2002-10-11
HUP0204408A2 (en) 2003-04-28
CZ20023021A3 (cs) 2003-05-14
HU225190B1 (en) 2006-08-28
PL357593A1 (en) 2004-07-26
JP2003527557A (ja) 2003-09-16
ES2238427T3 (es) 2005-09-01

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