EP0118789B1 - Bougie d'allumage pour moteurs à combustion interne - Google Patents

Bougie d'allumage pour moteurs à combustion interne Download PDF

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Publication number
EP0118789B1
EP0118789B1 EP84101508A EP84101508A EP0118789B1 EP 0118789 B1 EP0118789 B1 EP 0118789B1 EP 84101508 A EP84101508 A EP 84101508A EP 84101508 A EP84101508 A EP 84101508A EP 0118789 B1 EP0118789 B1 EP 0118789B1
Authority
EP
European Patent Office
Prior art keywords
spark gap
spark plug
spark
electrode
capacitor
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
Application number
EP84101508A
Other languages
German (de)
English (en)
Other versions
EP0118789A1 (fr
Inventor
Werner Dr. Dipl.-Ing. Herden
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 EP0118789A1 publication Critical patent/EP0118789A1/fr
Application granted granted Critical
Publication of EP0118789B1 publication Critical patent/EP0118789B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/40—Sparking plugs structurally combined with other devices
    • 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
    • F02P13/00—Sparking plugs structurally combined with other parts of 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
    • F02P3/00—Other installations
    • F02P3/06—Other installations having capacitive energy storage
    • F02P3/08—Layout of circuits
    • F02P3/0807—Closing the discharge circuit of the storage capacitor with electronic switching means
    • F02P3/0823—Closing the discharge circuit of the storage capacitor with electronic switching means with electronic tubes
    • 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
    • F02P9/00—Electric spark ignition control, not otherwise provided for
    • F02P9/002—Control of spark intensity, intensifying, lengthening, suppression
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/46—Sparking plugs having two or more spark gaps
    • H01T13/462—Sparking plugs having two or more spark gaps in series connection
    • H01T13/465—Sparking plugs having two or more spark gaps in series connection one spark gap being incorporated in the sparking plug

Definitions

  • the invention relates to a spark plug according to the preamble of the main claim;
  • a spark plug is already known (DE-OS 23 63 804, DE-AS 28 10159), in which in the immediate vicinity of the ignition electrodes by means of a capacitor and a spark gap, electrical energy is temporarily stored in an amount which, in the breakdown phase of the ignition spark, is more than conventional Spark plugs causes increased energy turnover.
  • the spark plug according to the invention with the characterizing features of the main claims has the advantage that, in addition to the increased energy consumption in the breakdown phase of the ignition spark, it also has an increased voltage supply, on the basis of an unchanged input voltage to the spark plug.
  • FIG. 1 shows the schematic structure of a spark plug according to the invention in an unscaled representation
  • FIG. 2 shows the equivalent circuit diagram of such a spark plug.
  • the high-voltage spark plug 10 shown in FIG. 1 has an essentially tubular metal housing 11 which has on its outside a screw thread 12, a hexagon key 13 and a sealing seat 14 as a means for installing the spark plug 10 in an engine head (not shown); In the area of its end on the combustion chamber side, this metal housing 11 has a hook-shaped ground electrode 15, which in the present example is designed as a welded-on wire, but can also be of a different configuration.
  • the metal housing 11 comprises in its through bore 16 in a known manner a rotationally symmetrical electrical insulating body 17 which projects at least on the connection side out of the through bore 16 of the metal housing 11.
  • This electrical insulating body 17, which for example essentially consists of aluminum oxide, is composed in the present example of three parts, namely the connection-side head 17/1, an insert 17/2 and a combustion chamber-side foot 17/3.
  • the combustion chamber-side end face 18 of the electrical insulator base 17/3 rests on a shoulder 19 formed on the combustion chamber side in the through bore 16 of the metal housing and is laterally fixed in the through bore 16.
  • a recess 20 is formed in the connection-side end section of the electrical insulating body base 17/3, in which the electrical insulating body insert 17/2 is fixed and fixed.
  • This depression 20 in the electrical insulating body foot 17/3 continues on the combustion chamber side in a longitudinal bore 21/3 with a shoulder 22 located near the end section on the combustion chamber side; this longitudinal bore 21/3 emerges on the combustion chamber side from the end face 18 of the electrical insulator base 17/3 and continues on the connection side in the electrical insulator insert 17/2 as a longitudinal bore 21/2.
  • This longitudinal bore 21/3 and 21/2 continue even further in a longitudinal bore 21/1, which axially passes through the electrical insulator head 17/1.
  • This ElektroisolierEff-head 17/1 has a flange 23 on the combustion chamber side, on the connection-side bevel 24 a flanged edge 25 of the connection-side end portion om metal housing 11 and holds the multi-part electrical insulation body 17 together.
  • sealing means and compensating elements known per se for the different expansion behavior of the different components of this spark plug 10 has been omitted.
  • an electrically conductive connecting bolt 27 which has a thread 28 and a collar 29 on its connection-side end section projecting from the electrical insulating body head 17/1, with which it attaches itself to the supports end face 30 of the electrical insulating body head 17/1.
  • the combustion chamber-side end section of the connecting bolt 27 ends approximately with the combustion chamber-side end face 31 of the electrical insulator head 17/1 and continues in a first electrode 32 of a spark gap 33.
  • This spark gap 33 which is known per se and is preferably enclosed in a capsule 34, is arranged in the longitudinal bore 21/2 of the electrical insulator insert 17/2 and has a second electrode 35, which emerges from the capsule 34 of the spark gap 33 on the combustion chamber side.
  • the second electrode 35 of the spark gap 33 continues in part of the longitudinal bore 21/3 of the electrical insulator base 17/3 and, with a considerable part of its end section on the combustion chamber side, represents a first charge carrier 36 of a capacitor 37; z serves as dielectric.
  • B. a layer of aluminum oxide, which is applied to this first charge carrier 36.
  • the second charge carrier 39 of this capacitor 37 is formed by a metallic tube which rests on the layer-shaped dielectric 38, is closed at its end on the combustion chamber side and emerges as the central electrode 40 from the longitudinal bore 21/3 of the electrical insulating body base 17/3 on the combustion chamber side.
  • This center electrode 40 has on its outside a shoulder 41 with which it is supported on the shoulder 22 in the longitudinal bore 21/3 of the insulator base 17/3.
  • the gap between the center electrode 40 and the ground electrode 15 forms the spark gap 42.
  • two further longitudinal bores 43 and 44 are also formed in the electrical insulator insert 17/2: in each of these longitudinal bores 43 and 44 there is a high-resistance resistor 45 or 46.
  • the resistor 45 is connected on the connection side with the connecting bolt 27 an electrical connector 47 is connected, which is arranged between the combustion chamber-side end face 31 of the electrical insulating body head 17/1 and the electrical insulating body insert 17/2; the combustion chamber end of this resistor 45 is connected to the second charge carrier 39 of the capacitor 37 via a connector 48 which runs at the combustion chamber end of the electrical insulator insert 17/2.
  • the other high-resistance resistor 46 is connected on the connection side to the metal housing 11 via a connector 49 which runs between the combustion-chamber-side end face 31 of the electrical insulating body head 17/1 and the electrical insulating body insert 17/2; the combustion chamber end of this resistor 46 is connected to the second electrode 35 of the spark gap 33 via an electrical connector 50 which runs at the combustion chamber end of the electrical insulator insert 17/2.
  • the connectors 48 and 49 are preferably embedded in an electrically insulating material which is connected to the dielectric 38 of the capacitor 37.
  • An additional capacitor 51 is formed from a metal tube representing the first charge carrier 52, which is arranged on the outer surface of the electrical insulating body base 17/3 and is covered by a thin-layer dielectric 53 made of a known material (for example aluminum oxide), and the one acting as a second charge carrier Metal housing 11.
  • the first charge carrier of this capacitor 51 is also electrically connected to the connecting bolt 27 at its connection-side end via a section 47 'of the connector 47.
  • FIG. 2 shows the equivalent circuit diagram of the spark plug according to the invention; the reference symbols used therein correspond to the respective components of the spark plug 10 according to FIG. 1.
  • the connecting bolt 27 is provided for connection to the secondary winding of an ignition coil, not shown.
  • a first line branch extends from this connecting bolt 27, which leads first to the ground-forming housing 11 via the spark gap 33, then via the capacitor 37 and finally via the spark gap 32 formed between the central electrode 40 and the ground electrode 15.
  • a high-resistance resistor 46 is located in the bypass to the aforementioned capacitor 37 and to the spark gap 42.
  • the other high-resistance resistor 45 is arranged in a shunt to the spark gap 33 and the capacitor 37.
  • Another circuit branch branches off from the connecting bolt 27 and contains the capacitor 51, the second charge carrier of which is formed by the housing 11 which is connected to ground.
  • spark gap 33 spark gap 33, resistors 45 and 46, capacitors 37 and 51

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Spark Plugs (AREA)

Claims (5)

1°) Bougie d'allumage (10) pour moteurs à combustion interne, pourvue d'un boîtier (11) relié électriquement à la masse, d'un corps diélectrique (17) disposé dans l'alésage de passage de ce boîtier de métal et mis en place de façon étanche, d'une électrode centrale (40) insérée de façon étanche dans l'alésage longitudinal du corps diélectrique, laquelle fait face de telle manière, du côté de la chambre de combustion, à distance, a une seconde électrode (15) servant d'électrode de masse, qu'un éclateur à étincelles (42) se trouve constitué, et est relié du côté du raccordement, par l'intermédiaire d'un éclateur à pré-étincelles (33), à un boulon de raccord (27) entouré de même par le corps diélectrique, et pourvue également d'un condensateur (51) monté parallèlement au branchement qui comprend le boulon de raccord, . l'éclateur à pré-étincelles, l'électrode centrale, l'éclateur à étincelles et la seconde électrique, bougie d'allumage caractérisée en ce que: un condensateur supplémentaire (37) se trouve entre . l'éclateur à preétincelles (33) et l'éclateur à étincelles (42), en ce que, en outre, une résistance (45) de valeur ohmique élevée est montée parallèlement à l'éclateur à pré-étincelles (33) et au condensateur supplémentaire (37) disposé en série avec celui-ci, et en ce qu'une résistance supplémentaire (46) de valeur ohmique élevée est encore montée parallèlement au condensateur supplémentaire (37) et à l'éclateur à étincelles (42) disposé en série avec celui-ci.
2°) Bougie d'allumage selon la revendication 1, caractérisée en ce que l'éclateur à pré-étincelles (33) forme avec la bougie d'allumage (10) un élement de construction compact.
3°) Bougie d'allumage selon la revendication 1 ou 2, caractérisée en ce que l'un au moins des condensateurs (37, 51) est constitué par des éléments de construction tubulaires, qui, de préférence, sont disposés coaxialement par rapport à l'électrode centrale (40).
4°) Bougie d'allumage selon la revendication 1 ou 2, caractérisée en ce que l'éclateur à pré-étincelles (33), les deux résistances (45, 46) et les deux condensateurs (37, 51 ) forment avec la bougie d'allumage (10) un élément de construction compact.
5°) Bougie d'allumage selon l'une des revendications 3 ou 4, caractérisée en ce que le boîtier de métal (11) forme une armature d'un condensateur (51) servant d'accumulateur de charge.
EP84101508A 1983-03-10 1984-02-14 Bougie d'allumage pour moteurs à combustion interne Expired EP0118789B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3308522 1983-03-10
DE19833308522 DE3308522A1 (de) 1983-03-10 1983-03-10 Zuendkerze fuer brennkraftmaschinen

Publications (2)

Publication Number Publication Date
EP0118789A1 EP0118789A1 (fr) 1984-09-19
EP0118789B1 true EP0118789B1 (fr) 1987-01-14

Family

ID=6193081

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84101508A Expired EP0118789B1 (fr) 1983-03-10 1984-02-14 Bougie d'allumage pour moteurs à combustion interne

Country Status (4)

Country Link
US (1) US4549114A (fr)
EP (1) EP0118789B1 (fr)
JP (1) JPS59169088A (fr)
DE (2) DE3308522A1 (fr)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3338672C1 (de) * 1983-10-25 1985-03-28 Daimler-Benz Ag, 7000 Stuttgart Einrichtung zur Zuendung brennfaehiger Gemische
DE3347027A1 (de) * 1983-12-24 1985-07-04 Robert Bosch Gmbh, 7000 Stuttgart Zuendkerze fuer eine brennkraftmaschine
CA1267930A (fr) * 1984-02-27 1990-04-17 Ronald C. Pate Systeme de mise a feu pour allumage a decharge electrique amplifiee
DE3436628A1 (de) * 1984-10-05 1986-04-10 BERU Ruprecht GmbH & Co KG, 7140 Ludwigsburg Zuendkerze
DE3600511A1 (de) * 1985-05-31 1986-12-04 Robert Bosch Gmbh, 7000 Stuttgart Zuendkerze fuer brennkraftmaschinen
DE3603025A1 (de) * 1986-01-31 1987-08-06 Isotec Ag Zwischenschalteinheit fuer eine zuendanlage
JPH071711B2 (ja) * 1986-11-26 1995-01-11 日本電装株式会社 内燃機関用スパ−クプラグ
JPH0831352B2 (ja) * 1987-08-04 1996-03-27 株式会社日本自動車部品総合研究所 スパークプラグ
US5210458A (en) * 1989-03-06 1993-05-11 Mcdougal John A Spark plug
JPH0494076A (ja) * 1990-08-09 1992-03-26 Yazaki Corp 放電管内蔵型点火プラグ装置
JPH04203269A (ja) * 1990-11-29 1992-07-23 Yazaki Corp 高圧ケーブル装置
US6559376B2 (en) 1996-09-30 2003-05-06 Nology Engineering, Inc. Combustion initiation device and method for tuning a combustion initiation device
US6329743B1 (en) * 1999-08-17 2001-12-11 Louis S. Camilli Current peaking sparkplug
US6374816B1 (en) 2001-04-23 2002-04-23 Omnitek Engineering Corporation Apparatus and method for combustion initiation
US7036494B1 (en) * 2005-10-21 2006-05-02 Chih-Yu Hsieh Ignition enhancement device for enhancing ignition efficiency of car engine
US8922102B2 (en) * 2006-05-12 2014-12-30 Enerpulse, Inc. Composite spark plug
US8049399B2 (en) 2006-07-21 2011-11-01 Enerpulse, Inc. High power discharge fuel ignitor
US7517235B2 (en) 2006-12-28 2009-04-14 General Electric Company Press fit connection for mounting electrical plug-in outlet insulator to a busway aluminum housing
US7735460B2 (en) * 2008-02-01 2010-06-15 Leonard Bloom Method and apparatus for operating standard gasoline-driven engines with a readily-available non-volatile fuel, thereby obviating the use of gasoline
US8015670B2 (en) * 2008-02-19 2011-09-13 Stover Equipment Co. Inc. Module feeder with non-traveling unwrapper
WO2009105273A1 (fr) * 2008-02-22 2009-08-27 Melvin Ehrlich Bougie à plasma pour moteur à combustion interne
DE102011117600A1 (de) * 2011-11-04 2013-05-08 Andreas Stihl Ag & Co. Kg Zündvorrichtung für einen Zweitaktmotor
EP2807711A4 (fr) 2012-01-27 2015-10-07 Enerpulse Inc Bougie haute puissance à écartement demi-surface
CN104412470B (zh) * 2012-05-30 2016-11-09 西门子公司 带有电容式储能器的火花间隙
US9828967B2 (en) 2015-06-05 2017-11-28 Ming Zheng System and method for elastic breakdown ignition via multipole high frequency discharge
JP6359575B2 (ja) * 2016-02-15 2018-07-18 日本特殊陶業株式会社 スパークプラグ
EA201992238A1 (ru) * 2017-03-27 2020-04-01 Серж В. Монроз Свеча программируемого плазменного зажигания
JP7125289B2 (ja) * 2018-06-29 2022-08-24 株式会社Soken 内燃機関用の点火装置

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
US2376362A (en) * 1945-05-22 Ignition system
US1982950A (en) * 1933-01-23 1934-12-04 Helen Baus Curtis Spark intensifying device
FR1326756A (fr) * 1962-05-21 1963-05-10 Lodge Plugs Ltd Perfectionnements aux dispositifs d'allumage, en particulier aux bougies d'allumage
GB994525A (en) * 1962-12-06 1965-06-10 Gen Motors Ltd Spark plugs
FR1376204A (fr) * 1963-12-03 1964-10-23 Gen Motors Ltd Bougie d'allumage
US3353052A (en) * 1964-07-15 1967-11-14 George H Barry Spark plug having an auxiliary series spark gap in parallel with the main spark gap
DE2363804A1 (de) * 1973-12-21 1975-06-26 Uwe Holtin Kondensatorzuendkerze
US4020388A (en) * 1974-09-23 1977-04-26 Massachusetts Institute Of Technology Discharge device
DE2739413A1 (de) * 1977-09-01 1979-03-08 Daimler Benz Ag Zuendkerze
DE2810159C3 (de) * 1978-03-09 1984-11-08 Bloss, Werner H., Prof. Dr.-Ing., 7065 Winterbach Einrichtung zur Zündung brennfähiger Gemische

Also Published As

Publication number Publication date
US4549114A (en) 1985-10-22
DE3308522A1 (de) 1984-09-13
DE3462083D1 (en) 1987-02-19
JPS59169088A (ja) 1984-09-22
EP0118789A1 (fr) 1984-09-19

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