EP1034400A1 - Bougie de prechauffage a fourreau destinee a des moteurs a combustion interne - Google Patents

Bougie de prechauffage a fourreau destinee a des moteurs a combustion interne

Info

Publication number
EP1034400A1
EP1034400A1 EP98966162A EP98966162A EP1034400A1 EP 1034400 A1 EP1034400 A1 EP 1034400A1 EP 98966162 A EP98966162 A EP 98966162A EP 98966162 A EP98966162 A EP 98966162A EP 1034400 A1 EP1034400 A1 EP 1034400A1
Authority
EP
European Patent Office
Prior art keywords
glow plug
combustion chamber
glow
chamber side
sheathed
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.)
Granted
Application number
EP98966162A
Other languages
German (de)
English (en)
Other versions
EP1034400B1 (fr
Inventor
Ulrich Kawa
Werner Teschner
Jochen Neumeister
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7849710&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1034400(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1034400A1 publication Critical patent/EP1034400A1/fr
Application granted granted Critical
Publication of EP1034400B1 publication Critical patent/EP1034400B1/fr
Anticipated expiration legal-status Critical
Revoked 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
    • 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
    • F02P19/021—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 characterised by power delivery controls
    • 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
    • F02P19/021—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 characterised by power delivery controls
    • F02P19/022—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 characterised by power delivery controls using intermittent current supply

Definitions

  • the invention relates to a glow plug for arrangement in the combustion chamber of air-compressing internal combustion engines according to the preamble of the main claim, as is already known from DE-C 28 02 625.
  • This known glow plug has a glow plug, in which an electrical resistance element embedded in an insulating material, which is composed of two resistance coils connected in series, is arranged.
  • the resistance coil on the combustion chamber side of this resistance element has an essentially temperature-independent resistance and serves as a heating element, while the resistance coil on the combustion chamber has a high positive temperature resistance coefficient and acts as a control element.
  • the mode of operation of such a self-regulating glow plug is already explained in detail in the prior art cited at the outset, so that it should be dispensed with here.
  • the resistance of the control coil is low at the beginning of the heating process and a high current flows through the heating coil.
  • the resistance of the control coil increases and the heating output of the heating coil decreases. This protects the glow plug from overheating.
  • the glow plug according to the invention with the characterizing features of the main claim has the advantage that the resistance of the control coil is reduced by shortening the proportion of the control coil and thus the heating time is reduced until the starting temperature is reached.
  • the glow plug according to the invention also has the known self-protection function due to the regulating effect with a significantly reduced heating-up time.
  • the clocking of the current through the resistance element after the start temperature has been reached has the advantage that the permissible maximum temperature is not exceeded, as a result of which the service life of the glow plug is significantly increased.
  • the measures listed in the subclaims allow advantageous developments and improvements of the glow plug specified in the main claim.
  • the entire resistance coil can advantageously be arranged in the glow pencil so that it does not lie in the housing of the glow plug. In this way, only heating of the glow plug and direct heat emission to the combustion chamber are specifically ensured, which makes the losses that would arise if the metal housing were heated unnecessarily, negligible.
  • FIG. 1 shows a longitudinal section through the region of a glow plug on the combustion chamber side
  • FIG. 2 shows a further longitudinal section through the glow plug on the combustion chamber side
  • FIG. 3 shows a time-temperature diagram to show the temperature profiles of the glow plug.
  • the glow plug shown in Figure 1 has a tubular metal housing 11, in the longitudinal bore 12
  • Glow plug 13 is sealed with part of its length.
  • This glow plug 13 has a corrosion-resistant, thin-walled glow tube 14 which is closed at its end on the combustion chamber side.
  • a resistance element 15 extends in the interior of the glow tube 14 in the axial direction.
  • the resistance element 15 is embedded in insulating material 16 and is provided with a connection part 17 for the electric current remote from the combustion chamber.
  • the resistance element 15 is connected to the bottom of the glow tube 14 in an electrically conductive manner on the combustion chamber side.
  • the resistance element 15 shown consists of a heating coil 20 which is arranged on the combustion chamber side.
  • a control coil 21, which has a high positive temperature resistance coefficient, is provided far from the combustion chamber.
  • FIG. 2 again shows the glow plug 13 in longitudinal section, it being clearly evident here that the control coil 21 is shortened in relation to the embodiment in FIG. 1. Fewer helical gears are provided here, so that the entire control coil lies in the glow plug part which is not enclosed by the housing 11.
  • Figure 3 shows the temperature behavior of the individual glow pencil candles over time.
  • Curve 30 shows the temperature profile of a conventional glow plug, as is also shown in FIG. 1. This glow plug reaches the temperature of 850 ° C after about four seconds and has a maximum temperature of 1100 ° C, which it reaches after about 10 seconds. The temperature is then reduced to approx. 1000 ° C via the control behavior of the glow plug.
  • curve 31 shows the glow plug with a shortened control coil, as shown in Figure 2.
  • the current flow through the glow plug after reaching the necessary start temperature in the exemplary embodiment is 1050 ° C clocked by the control unit, not shown here.
  • the clocking of the current of a glow plug is already known from US Pat. No. 4,391,237 and will not be explained again.
  • the temperature profile of a clocked glow plug according to the invention shown in Figure 2 is shown with the curve 32.
  • connection of a glow plug with a shortened control coil and the clocking of the control device has the advantage that, on the one hand, the heating-up time and thus the preheating time for the Engine is significantly shortened and at the same time protection of the glow plug is guaranteed against overheating.

Landscapes

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

Abstract

L'invention concerne une bougie de préchauffage à fourreau destinée à être placée dans la chambre d'explosion de moteurs à combustion interne. Cette bougie comporte un boîtier métallique tubulaire dans le trou longitudinal duquel un tube incandescent est fixé sur une partie de sa longueur et de façon étanche. Le tube incandescent a un fourreau à paroi mince, dont l'extrémité côté chambre d'explosion est fermée par un fond. Ce fourreau loge, côté chambre d'explosion, un élément de résistance s'étendant dans le sens axial et constitué d'un filament de chauffage et, côté opposé à la chambre d'explosion, un filament de réglage. Le filament de réglage, côté opposé à la chambre d'explosion, possède une partie connexion destinée au courant électrique et le filament de chauffage, côté chambre d'explosion, est relié de façon conductrice au fond du tube incandescent. La résistance du filament de réglage est environ de 100 à 150 m OMEGA et le courant est synchronisé par l'élément de résistance une fois la température de démarrage atteinte.
EP98966162A 1997-11-25 1998-11-23 Bougie de prechauffage a fourreau destinee a des moteurs a combustion interne Revoked EP1034400B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19752099A DE19752099C1 (de) 1997-11-25 1997-11-25 Glühstiftkerze für Brennkraftmaschinen
DE19752099 1997-11-25
PCT/DE1998/003450 WO1999027302A1 (fr) 1997-11-25 1998-11-23 Bougie de prechauffage a fourreau destinee a des moteurs a combustion interne

Publications (2)

Publication Number Publication Date
EP1034400A1 true EP1034400A1 (fr) 2000-09-13
EP1034400B1 EP1034400B1 (fr) 2001-09-26

Family

ID=7849710

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98966162A Revoked EP1034400B1 (fr) 1997-11-25 1998-11-23 Bougie de prechauffage a fourreau destinee a des moteurs a combustion interne

Country Status (4)

Country Link
EP (1) EP1034400B1 (fr)
JP (1) JP2001524655A (fr)
DE (2) DE19752099C1 (fr)
WO (1) WO1999027302A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004040195A1 (fr) 2002-10-19 2004-05-13 Robert Bosch Gmbh Bougie-crayon de prechauffage pourvue d'une spirale regulatrice nettement raccourcie
EP2840314A4 (fr) * 2012-04-16 2015-12-02 Ngk Spark Plug Co Bougie de préchauffage

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4695536B2 (ja) * 2006-03-29 2011-06-08 日本特殊陶業株式会社 グロープラグ
DE102013217703A1 (de) 2013-09-05 2015-03-05 Robert Bosch Gmbh Elektrische Heizeinrichtung mit Übertemperaturschutzkörper

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2802625C3 (de) * 1978-01-21 1985-07-18 BERU Ruprecht GmbH & Co KG, 7140 Ludwigsburg Glühkerze
JPS56126674A (en) * 1980-03-12 1981-10-03 Diesel Kiki Co Ltd Auxiliary stater of diesel engine
US4423309A (en) * 1982-06-28 1983-12-27 General Motors Corporation Quick heat self regulating electric glow heater
DE9005085U1 (fr) * 1990-05-04 1990-08-09 Beru Ruprecht Gmbh & Co Kg, 7140 Ludwigsburg, De
JP2570481Y2 (ja) * 1991-05-30 1998-05-06 自動車機器株式会社 自己温度制御型グロープラグ
JP3802599B2 (ja) * 1995-12-28 2006-07-26 日本特殊陶業株式会社 電熱式シーズヒータおよび自己温度制御型グロープラグ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9927302A1 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004040195A1 (fr) 2002-10-19 2004-05-13 Robert Bosch Gmbh Bougie-crayon de prechauffage pourvue d'une spirale regulatrice nettement raccourcie
US7225778B2 (en) 2002-10-19 2007-06-05 Robert Bosch Gmbh Sheated-element grow plug having a substantially shortened control filament
EP2840314A4 (fr) * 2012-04-16 2015-12-02 Ngk Spark Plug Co Bougie de préchauffage

Also Published As

Publication number Publication date
DE59801594D1 (de) 2001-10-31
WO1999027302A1 (fr) 1999-06-03
EP1034400B1 (fr) 2001-09-26
JP2001524655A (ja) 2001-12-04
DE19752099C1 (de) 1998-10-22

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