EP0448830A2 - Bougie à flamme pour un moteur à combustion à injection et compression d'air - Google Patents

Bougie à flamme pour un moteur à combustion à injection et compression d'air Download PDF

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Publication number
EP0448830A2
EP0448830A2 EP90125167A EP90125167A EP0448830A2 EP 0448830 A2 EP0448830 A2 EP 0448830A2 EP 90125167 A EP90125167 A EP 90125167A EP 90125167 A EP90125167 A EP 90125167A EP 0448830 A2 EP0448830 A2 EP 0448830A2
Authority
EP
European Patent Office
Prior art keywords
flame
tube
glow plug
plug according
air
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
EP90125167A
Other languages
German (de)
English (en)
Other versions
EP0448830A3 (en
EP0448830B1 (fr
Inventor
Roland Klak
Friedrich Schmid
Peter Joppig
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.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
Mercedes Benz AG
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 Daimler Benz AG, Mercedes Benz AG filed Critical Daimler Benz AG
Publication of EP0448830A2 publication Critical patent/EP0448830A2/fr
Publication of EP0448830A3 publication Critical patent/EP0448830A3/de
Application granted granted Critical
Publication of EP0448830B1 publication Critical patent/EP0448830B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N19/00—Starting aids for combustion engines, not otherwise provided for
    • F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
    • F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
    • F02N19/06—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines by heating of combustion-air by flame generating means, e.g. flame glow-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 relates to a flame glow plug for an air-compressing internal combustion engine according to the features specified in the preamble of claim 1.
  • the injection internal combustion engines operating on the compression-ignition principle require starting aids in order to raise the compression end temperatures to values above the compression-ignition temperature.
  • Flame glow plugs in use are known as starting aids during the starting process, which essentially consist of the candle housing with flame tube, the dosing insert, the heating element and the evaporator tube surrounding it.
  • the fuel supplied via the metering insert enters an annular space between the heating element and the evaporator tube and flows from there into the flame tube, where it mixes with the inflowing air.
  • the invention has for its object by simple structural changes to the one described Flame glow plug to prepare the fuel so that it evaporates optimally and forms an ignitable mixture with the air entering the flame tube.
  • the special fuel connection between the dosing insert and the evaporator tube results in a significantly better evaporation of the fuel in the narrow, helical swirl channel, from which the fuel emerges in a swirling manner and accelerates through the gap between the rings into the flame tube and there with the inflowing air to an optimal fuel Air mixture mixed.
  • the flame glow plug 1 shown in FIG. 1 for an internal combustion engine with air compression and auto-ignition essentially consists of a candle housing 2 with a metering insert 3, a heating element 4 and an evaporator tube 6 surrounding it, forming an annular space 5.
  • the upper end of this evaporator tube 6 is arranged at a distance from the dosing insert 3, the candle housing 2 being drawn in in this area such that it is sealingly connected to the heating element 4.
  • a screw-shaped swirl channel 7 is provided on the heating rod 4 for the adhesive connection from the metering insert 3 to the annular space 5, through which the fuel enters the annular space 5 in a swirling manner.
  • the free end of the heating element 4 protrudes from the evaporator tube 6 and is shielded by a cylindrical flame tube 8 connected to the candle housing 2 and provided with through openings 9 for the inflow air.
  • annular air deflector 10 is arranged between the flame tube 8 and the heating element 4 at the height of the passage openings 9, as shown in FIGS (Fig. 2 and 5) is supported.
  • the air flowing into the interior of the flame glow plug 1 is thus deflected upwards and downwards.
  • the flame tube 8 is not cylindrical, but star-shaped.
  • the air deflector 10 is firmly connected to the indentations 8a, while the projections 8b have the passage openings 9. Due to the special design of the flame tube 8, the air in the interior of the flame glow plug 1 is strongly swirled and an improvement in the fuel-air mixture is achieved outside this plug 1.
  • the free end of the flame tube 8 is drawn in in an arc shape in order to redirect the air or the fuel-air mixture to the hot heating element 4, whereby the mixture formation is further improved and a higher burnout is achieved.
  • gills 12 are provided on the flame tube 8 above the passage openings 9 and direct the inflowing air between the flame tube 8 and the evaporator tube 6 and finally between the air deflector 10 and the heating element 4 in order to ventilate the interior there.
  • the air deflector 10 has a larger diameter than the evaporator tube 6.
  • the special designs with regard to the air inlets and the air deflector mean that the risk of soot or coke deposits between the heating element and the evaporator tube is eliminated due to the good ventilation.
  • the part of the heating rod 4 protruding from the evaporator tube 6 can be grooved, specifically in the form of superimposed annular grooves 13 according to FIG. 6 or a helical annular groove 14 according to FIGS. 2, 3, 5, which increases the surface area on the heating rod 4 resulting in an improvement in ignition.
  • air deflectors 10 are shown, each of which is formed in the flame tube 8 by two superimposed slots 10a, 10b, which delimit an indented wall section 10c.
  • the air deflectors can be arranged in one or two rows.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Spray-Type Burners (AREA)
  • Air-Conditioning For Vehicles (AREA)
EP90125167A 1990-03-29 1990-12-21 Bougie à flamme pour un moteur à combustion à injection et compression d'air Expired - Lifetime EP0448830B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4010093A DE4010093C1 (en) 1990-03-29 1990-03-29 Flame plug for IC-engine - has fuel metering insert and spaced evaporator tube to enclose heating bar
DE4010093 1990-03-29

Publications (3)

Publication Number Publication Date
EP0448830A2 true EP0448830A2 (fr) 1991-10-02
EP0448830A3 EP0448830A3 (en) 1992-01-22
EP0448830B1 EP0448830B1 (fr) 1994-03-02

Family

ID=6403331

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90125167A Expired - Lifetime EP0448830B1 (fr) 1990-03-29 1990-12-21 Bougie à flamme pour un moteur à combustion à injection et compression d'air

Country Status (4)

Country Link
US (1) US5182437A (fr)
EP (1) EP0448830B1 (fr)
DE (1) DE4010093C1 (fr)
RU (1) RU1838663C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0603795A2 (fr) * 1992-12-23 1994-06-29 BERU Ruprecht GmbH & Co. KG Installation de préchauffage à flamme

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4142195C2 (de) * 1991-12-20 1993-10-14 Daimler Benz Ag Flammglühkerze für eine Dieselbrennkraftmaschine
DE4308543A1 (de) * 1993-03-17 1994-09-22 Man Nutzfahrzeuge Ag Flammstartanlage für Dieselmotore
DE19506711C1 (de) * 1995-02-25 1996-05-09 Beru Werk Ruprecht Gmbh Co A Flammglühkerze für eine Dieselbrennkraftmaschine
DE19629928A1 (de) * 1996-07-24 1998-01-29 Beru Werk Ruprecht Gmbh Co A Verfahren zum Betreiben einer Flammstartanlage für eine Brennkraftmaschine und Flammstartanlage für eine Brennkraftmaschine
US5860804A (en) * 1997-10-30 1999-01-19 Societe En Commandite Gaz Metropolitain Baffle ignitor assembly
US6076493A (en) * 1998-10-26 2000-06-20 Caterpillar Inc. Glow plug shield with thermal barrier coating and ignition catalyst
US8022337B2 (en) * 2008-06-10 2011-09-20 Locust, Usa, Inc. Ignitor plug assembly
CA2765869A1 (fr) * 2009-06-26 2010-12-29 Orbital Australia Pty Limited Combustion de carburants a faible pression de vapeur dans des moteurs a allumage par etincelle
US20110129393A1 (en) * 2009-12-02 2011-06-02 Lecea Oscar A Electrically-Heated Contact Fuel Vaporizer for a Hydrocarbon Reformer
DE102010027468A1 (de) * 2010-07-17 2012-01-19 Borgwarner Beru Systems Gmbh Glühkerze

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1577731A (fr) * 1967-10-18 1969-08-08
FR2159085A5 (fr) * 1972-01-13 1973-06-15 Bosch
DE3136852A1 (de) * 1980-10-30 1982-06-16 Beru-Werk Albert Ruprecht Gmbh & Co Kg, 7140 Ludwigsburg Flammgluehkerze fuer brennkraftmaschinen
DE3301559A1 (de) * 1983-01-19 1984-07-19 Daimler-Benz Ag, 7000 Stuttgart Stabgluehkerze fuer eine luftverdichtende einspritzbrennkraftmaschine
DE3309133A1 (de) * 1983-03-15 1984-09-20 Robert Bosch Gmbh, 7000 Stuttgart Flammgluehstiftkerze zum vorwaermen der ansaugluft von brennkraftmaschinen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7133650U (de) * 1973-02-15 Bosch R Gmbh Flammgluhstiftkerze fur Diesel und Vielstoff Motoren
GB1247299A (en) * 1968-11-19 1971-09-22 Ise Electronics Corp Improvements in or relating to electric discharge display tubes
DE1903999C3 (de) * 1969-01-28 1975-01-09 Robert Bosch Gmbh, 7000 Stuttgart Flammglühkerze als Anlaßhilfe für Diesel- und Vielstoffmotoren
DE2031607A1 (de) * 1970-06-26 1971-12-30 Robert Bosch Gmbh, 7000 Stuttgart Flammglühkerze als Anlaßhilfe für Diesel- und Vielstoffmotoren
DE2112815A1 (de) * 1971-03-17 1972-10-05 Bosch Gmbh Robert Flammkerze als Anlasshilfe fuer Diesel- und Vielstoffmotoren
JPS5137085Y2 (fr) * 1971-04-20 1976-09-10

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1577731A (fr) * 1967-10-18 1969-08-08
FR2159085A5 (fr) * 1972-01-13 1973-06-15 Bosch
DE3136852A1 (de) * 1980-10-30 1982-06-16 Beru-Werk Albert Ruprecht Gmbh & Co Kg, 7140 Ludwigsburg Flammgluehkerze fuer brennkraftmaschinen
DE3301559A1 (de) * 1983-01-19 1984-07-19 Daimler-Benz Ag, 7000 Stuttgart Stabgluehkerze fuer eine luftverdichtende einspritzbrennkraftmaschine
DE3309133A1 (de) * 1983-03-15 1984-09-20 Robert Bosch Gmbh, 7000 Stuttgart Flammgluehstiftkerze zum vorwaermen der ansaugluft von brennkraftmaschinen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0603795A2 (fr) * 1992-12-23 1994-06-29 BERU Ruprecht GmbH & Co. KG Installation de préchauffage à flamme
EP0603795A3 (en) * 1992-12-23 1994-08-24 Beru Werk Ruprecht Gmbh Co A Flame glow system.
US5402757A (en) * 1992-12-23 1995-04-04 Beru Ruprecht Gmbh & Co. Kg Flame glow unit

Also Published As

Publication number Publication date
EP0448830A3 (en) 1992-01-22
RU1838663C (ru) 1993-08-30
EP0448830B1 (fr) 1994-03-02
DE4010093C1 (en) 1991-08-14
US5182437A (en) 1993-01-26

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