EP1500879B1 - Bougie à incandescence avec une détection intégrale de pression - Google Patents

Bougie à incandescence avec une détection intégrale de pression Download PDF

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Publication number
EP1500879B1
EP1500879B1 EP20040014414 EP04014414A EP1500879B1 EP 1500879 B1 EP1500879 B1 EP 1500879B1 EP 20040014414 EP20040014414 EP 20040014414 EP 04014414 A EP04014414 A EP 04014414A EP 1500879 B1 EP1500879 B1 EP 1500879B1
Authority
EP
European Patent Office
Prior art keywords
glow plug
pressure
combustion chamber
housing
glow
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
EP20040014414
Other languages
German (de)
English (en)
Other versions
EP1500879A1 (fr
Inventor
Thomas Moelkner
Andreas Reissner
Vera Wein
Rainer Bach
Armin Kussmaul
Steffen Carbon
Christoph Kern
Ralf Kaiser
Hans-Peter Didra
Andreas Gaiser
Markus Ledermann
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 EP1500879A1 publication Critical patent/EP1500879A1/fr
Application granted granted Critical
Publication of EP1500879B1 publication Critical patent/EP1500879B1/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
    • 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
    • F02P19/02—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs
    • F02P19/028—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs the glow plug being combined with or used as a sensor
    • 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
    • F23Q2007/002—Glowing plugs for internal-combustion engines with sensing means

Definitions

  • the invention relates to a glow plug for arrangement in a combustion chamber of an internal combustion engine, consisting essentially of a arranged in a glow tube heating and control coil and connected to the control coil connecting bolt, wherein the glow tube together with at least a portion of the connecting bolt surrounded by a housing and the glow plug comprises an integrated pressure measuring device.
  • a glow plug is made of documents DE-A-4 132 842 and WO-A-97/09567 already known.
  • the engines require a heat source for a good start and warm-up behavior at low temperatures, which preheats either the gas mixture, the intake air or the combustion chamber.
  • a heat source for a good start and warm-up behavior at low temperatures, which preheats either the gas mixture, the intake air or the combustion chamber.
  • cars usually glow plugs are used for this purpose. They protrude with their radiator into the combustion chamber of the internal combustion engine.
  • glow plugs are present, which have in their housing wall a so-called pressure bore, which is coupled to a remote from the combustion chamber end pressure sensor.
  • the pressure measurement itself is usually carried out via a pressure sensor, which usually exploits the pressure sensitivity of piezoceramics.
  • the object of the invention is to optimize the measures provided for glow plugs measurement of prevailing in a combustion chamber of an internal combustion engine pressure and to propose a cost-effective solution.
  • the object of the invention is to provide for the pressure measuring device a pressure channel which is formed by at least one longitudinal groove on the inner wall of the housing in the combustion chamber near the housing and extends to a pressure transducer, which is preferably arranged at the combustion chamber remote end of the glow plug.
  • the essential idea of the invention is that it dispenses with a very costly oblong hole and by conventional means a pressure line from the region of the combustion chamber near the end of the housing is provided up to the remote from the combustion chamber pressure transducer.
  • One of the significant advantages of the invention is that due to the construction according to the invention, which serves to produce a pressure channel, a very inexpensive and commercially available pressure sensor can be used.
  • a particularly preferred embodiment provides that the pressure channel is guided by the combustion chamber near the glow plug in the housing and from there via a bore in the connecting bolt to the combustion chamber distant part of the glow plug on which then the corresponding pressure transducer can be installed via an adapter.
  • a glow plug 1 according to the invention is shown. It consists of a radiator 2, which in turn consists of a glow tube 3, in which a filament 4 is embedded.
  • the filament 4 consists of a heating coil 5 and a control coil 6, wherein the heating coil 5 is connected at its free end to the glow tube 4 and the control coil 6 with its other end to a connecting bolt 7.
  • the glow tube 3 is assigned to the combustion chamber near area 8.
  • the connecting bolt 7 extends into the combustion chamber remote area 9.
  • a part of the glow tube 3, which is associated with the combustion chamber remote area 8, and a large part of the connecting bolt 7 are surrounded by a housing 10.
  • This housing 10 serves to make the entire glow plug 1 compact.
  • the housing 10 has on its outside a thread 11, by means of which the glow plug 1 is mounted in the internal combustion engine.
  • the glow tube 3 is pressed into the housing 10.
  • the housing 10 in the region of the press fit 12 between the glow tube 3 and the housing 10 grooves 13, which extend in the longitudinal extent of the glow plug 1.
  • These grooves 13 cause the pressure generated in the combustion chamber of the internal combustion engine via these grooves 13 in the housing 10 of the glow plug 1 are performed.
  • the pressure thus located in the housing 10 is further transmitted via transverse bores 14, which are provided in the housing 10 arranged connecting bolt 7. From there, the pressure generated in the combustion chamber is transmitted via a further longitudinal bore 15 (pressure channel D) to the pressure sensor 16 arranged in the combustion chamber remote region 9.
  • the connecting bolt 7 is formed in two parts, wherein the part extending in the direction of the glow tube 3, is formed as solid material and the part which is provided with the holes (transverse bore 14 and longitudinal bore 15) as Pipe material is selected.
  • a sensor can advantageously be provided which converts the pressure electromechanically, piezotechnically or optically into an electronically evaluable signal which is transmitted via a signal line 17 to a measuring device.
  • a sealing element 18 is provided on the combustion chamber remote area 9 of the glow plug 1, which is designed such that this part passes through the connecting bolt 7, but also allows the supply of an electrical line 19, the is provided for the heating of the glow tube 3.
  • An insulating disc 20 prevents an electrical contact in the direction of the pressure sensor 16 is formed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measuring Fluid Pressure (AREA)

Claims (6)

  1. Bougie à incandescence pour une chambre de combustion d'un moteur à combustion interne, constituée essentiellement de spirales incandescentes et de réglage (4) disposées dans un tube incandescent (3) et d'un boulon de raccordement (7) connecté à la spirale de réglage (6), la partie du tube incandescent (3) éloignée de la chambre de combustion étant entourée conjointement avec au moins une partie du boulon de raccordement (7) par un boîtier (10) et comprenant un dispositif de mesure de pression intégré (16), caractérisée en ce que le dispositif de mesure de pression (16) comprend un canal de pression (D), qui est formé par au moins une gorge (13) sur la paroi interne du boîtier (10) dans la région (8) du boîtier (10) proche de la chambre de combustion, et s'étend jusqu'à un enregistreur de pression à l'intérieur du boîtier (10) de la bougie à incandescence (1).
  2. Bougie à incandescence selon la revendication 1, caractérisée en ce que le diamètre extérieur du boulon de raccordement (7) est plus petit que le diamètre du boîtier (10) et en ce qu'il se forme ainsi un canal de pression.
  3. Bougie à incandescence selon la revendication 1, caractérisée en ce qu'au moins la partie (9) du boulon de raccordement (7) éloignée de la chambre de combustion est réalisée sous forme de tube et en ce qu'il se forme ainsi un canal de pression.
  4. Bougie à incandescence selon la revendication 1, caractérisée en ce que le boulon de raccordement (7) présente au moins un alésage transversal (14), à travers lequel la pression peut être transmise à l'enregistreur de pression (16).
  5. Bougie à incandescence selon l'une quelconque des revendications précédentes, caractérisée en ce que l'on peut monter à l'extrémité (9) de la bougie à incandescence (1) éloignée de la chambre de combustion, un élément adaptateur qui est prévu pour recevoir l'enregistreur de pression (16).
  6. Bougie à incandescence selon l'une quelconque des revendications précédentes, caractérisée en ce que pour réaliser l'étanchéité de l'espace interne de la bougie à incandescence par rapport à l'environnement, on prévoit un élément de joint (18).
EP20040014414 2003-07-21 2004-06-19 Bougie à incandescence avec une détection intégrale de pression Expired - Lifetime EP1500879B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10332960 2003-07-21
DE2003132960 DE10332960A1 (de) 2003-07-21 2003-07-21 Glühstiftkerze mit integrierter Druckmessung

Publications (2)

Publication Number Publication Date
EP1500879A1 EP1500879A1 (fr) 2005-01-26
EP1500879B1 true EP1500879B1 (fr) 2009-02-25

Family

ID=33482986

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040014414 Expired - Lifetime EP1500879B1 (fr) 2003-07-21 2004-06-19 Bougie à incandescence avec une détection intégrale de pression

Country Status (2)

Country Link
EP (1) EP1500879B1 (fr)
DE (2) DE10332960A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015205671A1 (de) 2015-03-30 2016-10-06 Robert Bosch Gmbh Brennraumdruckaufnehmer, Verbrennungskraftmaschine und Verfahren zur Messung eines Brennraumdrucks in einem Brennraum einer Verbrennungskraftmaschine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004025968A1 (de) * 2004-05-27 2005-12-15 Robert Bosch Gmbh Verkokungsschutz für eine Glühstiftkerze mit einem Glaskanal zur Druckmessung
DE102006037235A1 (de) * 2006-08-09 2008-02-14 Siemens Ag Verfahren und Vorrichtung zur Bestimmung eines Drucks im Brennraum einer Brennkraftmaschine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59134341A (ja) * 1983-01-21 1984-08-02 Nippon Soken Inc デイ−ゼルエンジンの噴射時期制御装置
DE4132842A1 (de) * 1991-10-02 1993-04-08 Beru Werk Ruprecht Gmbh Co A Gluehkerze mit sensorelement
JP3177819B2 (ja) * 1995-09-05 2001-06-18 株式会社ユニシアジェックス 内燃機関の筒内圧力検出装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015205671A1 (de) 2015-03-30 2016-10-06 Robert Bosch Gmbh Brennraumdruckaufnehmer, Verbrennungskraftmaschine und Verfahren zur Messung eines Brennraumdrucks in einem Brennraum einer Verbrennungskraftmaschine

Also Published As

Publication number Publication date
EP1500879A1 (fr) 2005-01-26
DE10332960A1 (de) 2005-02-10
DE502004009036D1 (de) 2009-04-09

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