[go: up one dir, main page]

WO1992004754A1 - Dispositif electrique d'allumage generateur d'etincelles, notamment pour carburants gazeux - Google Patents

Dispositif electrique d'allumage generateur d'etincelles, notamment pour carburants gazeux Download PDF

Info

Publication number
WO1992004754A1
WO1992004754A1 PCT/DE1991/000640 DE9100640W WO9204754A1 WO 1992004754 A1 WO1992004754 A1 WO 1992004754A1 DE 9100640 W DE9100640 W DE 9100640W WO 9204754 A1 WO9204754 A1 WO 9204754A1
Authority
WO
WIPO (PCT)
Prior art keywords
ignition device
combustion chamber
connection
housing
electrical
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/DE1991/000640
Other languages
German (de)
English (en)
Inventor
Walter Benedikt
Bodo Ziegler
Helmut Weyl
Dittmar Klett
Rainer Noack
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 WO1992004754A1 publication Critical patent/WO1992004754A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • H01T21/00—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs
    • H01T21/02—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs of sparking plugs
    • 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
    • H01T13/20—Sparking plugs characterised by features of the electrodes or insulation

Definitions

  • the invention relates to an electrical, spark-generating ignition device according to the preamble of the main claim.
  • An electrical, spark-generating ignition device is already known
  • the electrical, spark-generating ignition device according to the invention with the characterizing features of the main claim has the advantage that it is safely resistant to temperatures of at least 500 ° C in its area surrounding the housing and does not require any dust-forming process on the occasion of its assembly.
  • FIG. 1 shows a longitudinal section through a first embodiment of an electrical ignition device according to the invention
  • FIG. 2 shows the longitudinal section through the central area of a second embodiment of an electrical ignition device according to the invention
  • FIG. 3 shows the longitudinal section through the central area of a third embodiment of an inventive device electric igniter.
  • the electrical, spark-generating ignition device 10 shown in FIG. 1 of the drawing has a metallic, tubular housing 11, which is provided on its outside with fastening means 12 for is installed in a combustion chamber; the preferred fastening means 12 are a screw-in thread 12/1 and a key hexagon 12/2, possibly also a sealing ring 12/3, but a flange connection (not shown) can also be provided. find application for this.
  • the housing 11 On the connection side, the housing 11 has on its outside a recess 15 which can be designed both as an annular groove and as a plurality of inlets distributed over the circumference; this cylindrical region 16 of the housing 11, which carries the at least one depression 15, preferably has an outer diameter which is smaller than the width across flats of the hexagon wrench 12/2 and consequently forms a shoulder 17 with the region of the hexagon wrench 12/2.
  • the longitudinal bore 18 of the housing 11 is of stepped design, the longitudinal section 18/1 on the connection side having the largest diameter, followed by a longitudinal section 13/2 on the combustion chamber side, which then merges via a shoulder 19 into a longitudinal section 18/3 on the combustion chamber side.
  • a tubular component 20 is fixed thereon, which has a support 21 pointing towards the inside of the ignition device 10; this support 21 is preferably annular, but can also be designed as a plurality of annularly arranged sheet metal lugs (not shown).
  • a metal sleeve is used, which is done with its end section on the combustion chamber side over the cylindrical region 16 of the housing 11 and is fastened thereto; the attachment of this formed as a metal sleeve Component 20 on housing 11 takes place in this preferred embodiment by caulking, wherein caulking stamps (not shown) acting axially on component 20 and housing 11 press at least one projection 22 into component 20, which is designed as a metal sleeve and is located in recess 15 on the outside of the housing Anchored housing 11.
  • the end of the component 20 on the combustion chamber side is provided with splash water in the region of the shoulder 17 of the housing 11 with an all-round weld 23 (for example laser welding).
  • the component 20 designed as a metal sleeve has a connection-side section 24 which adjoins the annular support 21 and is designed as a pipe socket.
  • a flanged edge 25 can be used as the connection-side end section of this component 24.
  • the longitudinal bore 18 of the housing 11 and the interior 25 of the component 20 designed as a metal sleeve comprises an electrical insulator 27, which may consist essentially of aluminum oxide, for example, and is stepped on its outside.
  • the combustion chamber-side longitudinal section of the electrical insulator 27, which forms the so-called stone foot 27/1, has the smallest diameter, runs in the shape of a truncated cone in the direction of the combustion chamber and is arranged coaxially in the combustion chamber-side longitudinal section 18/3 of the longitudinal bore 13 of the housing 11; the combustion chamber end of this stone foot 27/1 is flush with the end face 13 of the housing 11, but can also - depending on the application - protrude behind the end face 13 of the housing 11 or also protrude from the longitudinal bore 18 of the housing 11.
  • the stone base 27/1 is adjoined by a shoulder 28, which then merges into the longitudinal section of the electrical insulator 27 designated as shaft 27/2.
  • the shoulder 28 of the electrical insulator 27 is arranged on a sealing ring 29 which is on the shoulder 19 rests in the longitudinal bore 18 of the housing 11.
  • the combustion chamber-side section of the shaft 27/2 of the electrical insulator 27 is guided radially in the section 18/2 of the longitudinal bore 18 of the housing 11, while the connection-side region of the shaft 27/2 forms an annular gap 30 with the surrounding section of the housing 11;
  • This annular gap 30 prevents cool air or cold splash water impinging on the housing 11 from acting directly on the electrical insulator 27, which is preferably made of ceramic material, and consequently causing the electrical insulator 27 to break (thermal shock).
  • connection-side area of the electrical insulator 27 is designated as the head 27/3 and is located essentially outside the longitudinal bore 18 of the housing 11; There is also an annular gap 30/1 between this head 27/3 of the electrical insulator 27 and the component 20 formed around it, designed as a metal sleeve, which serves the same purpose as the annular gap 30 between the electrical isolator 27 and the housing 11.
  • the electrical insulator 27 has a central bore 31 which runs through the entire electrical insulator 27 in the longitudinal direction and which has a recessed shoulder 33 in its connection-side end face 32.
  • central electrode 34 In the central bore 31 of the electrical insulator 27 there extends a central electrode 34, in which at least the section on the combustion chamber side which protrudes from the electrical insulator 27 is resistant to temperature changes and, if appropriate, also with an erosion-resistant one
  • Section (not shown) may be provided; this end section of the middle electro 34 on the combustion chamber side is at a distance (spark gap) from the counterelectrode 14 possibly attached to the housing 11 and / or a counterelectrode 14/1 located on a combustion chamber wall 35 indicated by dash-dotted lines and also indicated by dash-dotted lines.
  • the end section on the combustion chamber side the center electrode 34, as well as the counter electrodes 14, 14/1 can have configurations adapted to the application. B. pointed, frustoconical, angular or rounded; in most of the applications, the combustion chamber-side end face 36 of the center electrode 34 is oriented at right angles to the imaginary longitudinal axis of the center electrode 34.
  • the center electrode 34 is equipped with a stop 37, which is of flange-like design, rests on the combustion chamber side on a sealing ring 38, is preferably annular, but can also have a circumferential line of a different configuration (e.g. square).
  • the sealing ring 38 lies on the shoulder 33 located in the longitudinal bore 18 of the electrical insulator 27.
  • an insulating body 39 which, for example, can also essentially consist of aluminum oxide, one.
  • Insulating body 39 is formed on the connection side with a pipe socket-like section 42, through which the central bore 40 also passes.
  • the connecting part 41 of the center electrode 34 is provided with a contact point 43 which is arranged inside and / or outside the central bore 40 and is thread-like c. ⁇ . Can be formed.
  • the combustion chamber-side surface 44 of the insulation body 39 can stand on an additional sealing ring 46 which lies on the stop 37 of the center electrode 34 on the connection side.
  • a spring element 48 is supported on the connection-side, preferably annular surface 47 of the insulating body 39, which rests on the support 21 of the component 20 designed as a metal sleeve and is under mechanical prestress; in the preferred embodiment, the spring element 48 is formed by at least one annular disk spring.
  • a tubular sealing element 49 is arranged on the connection side of the spring element 48, which seals the gap between the pipe socket-like
  • connection-side end section of the section 24 of the component 20 can be designed as a flanged edge 25 and can grip over the connection-side end face 50 of the circular sealing element 49.
  • connection of an ignition cable 51 is provided, which is provided on the combustion chamber side with a connection sleeve 52; this connection sleeve 52 is on the connection side with the electrically conductive.
  • Part (not shown) of the ignition cable 51 surrounded by an insulating sheath 53 is connected, while the combustion chamber-side section of the connecting sleeve 52 comprises the contact point 43 of the center electrode 34 and is preferably surrounded by the pipe socket-like section 42 of the insulating body 39.
  • the tubular sealing element 49 is extended in length beyond the pipe socket-like section 42 of the insulating body 39 and also completely surrounds the connection-side area of the connecting sleeve 52 and also a part of the ignition cable 51 surrounded by the insulating sheath 53.
  • a metal l ische Protective cap 54 which on the combustion chamber side fits tightly over the connection-side section 24 of the component 20 designed as a metal sleeve and on the connection side of the ignition cable 51 is tightly pressed by caulking or crimping together with the connection-side section 24 of the component 20 designed as a metal sleeve against the tubular sealing element 49, which consequently rests with its inside 55 sealingly against the insulating jacket 53 of the ignition cable 51.
  • the caulking or crimping is expedient at the point identified by reference numeral 56.
  • connection between an ignition cable 51 and an electrical, spark-forming ignition device 10 can also be made by other known means.
  • FIG. 2 shows an embodiment of an electrical ignition device 10 ′ that differs somewhat from the exemplary embodiment according to FIG. 1. While the central electrode 34 and the connecting part 41 form a single component in the exemplary embodiment according to FIG. 1, the central electrode 34 'and the connecting part 41' are each a separate part in the electrical ignition device 10 'according to this FIG. 2 of the drawing.
  • the head-shaped stop 37 'of the center electrode 34' lies on a shoulder 33 'in a connection-side bore 60 of the electrical insulator 27'.
  • a compensating spring 61 which is under mechanical prestress; While in the present exemplary embodiment the compensating spring 61 is formed by a wire which has at least one wave-shaped deflection 62, other known spring elements can also be used instead (e.g. zigzag or helical spring).
  • the compensating spring 61 shown in the example has axially aligned end sections which are each fixed in a blind hole 63, 64 in the connecting part 41 'or in the head-shaped stop 37' of the center electrode 34 '.
  • connection portion 41 'of the electrical Ignition device 10 ' has, on the combustion chamber side, a flange-shaped stop 65, with which it rests on the connection side on a sealing ring 46'.
  • This sealing ring 46 ' abuts the insulating body 39' on the connection side and also projects sealingly into the gap 45 'between the electrical insulator 27' and the insulating body 39 '.
  • the structure of the electrical ignition device 10 ′ corresponds to the electrical ignition device 10 shown in FIG. 1.
  • the electrical ignition device 10 ′′ shown in FIG. 3 largely corresponds to the ignition device 10 ′ according to FIG. 2.
  • This ignition device 10 ′′ is characterized in comparison to the ignition device 10 ′ according to FIG 3, a suppressor resistor 70 is shown, in which a resistance coil (not shown) is wound and / or molded onto a rod-shaped ceramic carrier 71.
  • the two end sections of the resistance coil (not shown) are electrically conductive with
  • connection caps 72 connected, one of which is placed over an end portion of the ceramic support 71.
  • the electrical connection and fixation of the combustion-chamber-side connection cap 72 of the interference suppression 70 takes place in a connection-side blind hole 64 'of the head-like stop 37 "of the central electrode 34", while the connection-side connection carp 72 of the interference suppression resistor 70 radially fixes in a combustion chamber-side blind hole 63' of the connection part 41 " and is electrically contacted by means of a compensating spring 61 'under mechanical prestress;
  • the compensating spring 61' is preferably designed as a zigzag-shaped strip which is supported on the one hand on the bottom of the blind hole 63 'and on the other hand on the connection-side connection cap 72 of the interference suppressor 70 compensating spring 51 'bent in a zigzag shape can also be a Disc spring or a helical spring can be used.
  • the described electrical, spark-generating ignition devices can be used in particular for gaseous fuels, but they are also suitable for igniting mixtures of fuel mist and air;
  • the electrical ignition device according to the invention can be used particularly well in a combustion chamber which is arranged in an exhaust gas line of an internal combustion engine upstream of a catalytic converter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Spark Plugs (AREA)

Abstract

Un dispositif électrique (10) d'allumage générateur d'étincelles sert notamment à enflammer des carburants gazeux. Le dispositif comprend un boîtier métallique tubulaire (11) pourvu sur sa face extérieure d'éléments de fixation (12). Dans l'alésage longitudinal (18) du boîtier est monté un électro-isolateur tubulaire dont la section côté chambre de combustion est hermétiquement fermée, alors que sa tête (27/3) fait saillie hors du boîtier (11) côté raccordement. L'électrode centrale (34) qui traverse l'alésage central (31) de l'électro-isolateur (27) comprend une butée (37) en forme de bride qui est comprimée côté chambre de combustion par un élément à ressort (48) sous pré-contrainte mécanique, de sorte que l'électrode est fixée de manière hermétiquement fermée dans l'alésage central (31) de l'électro-isolateur (27). L'élément à ressort (48) est électriquement isolé par rapport à l'électrode centrale (34) et s'appuie sur un composant (20) fixé au boîtier (11). L'électrode centrale (34) peut former un seul composant avec la partie de raccordement (41), bien que ces deux éléments puissent également former des composants séparés et être reliés par un ressort compensateur (61) ou par un ressort compensateur (61') et par une résistance d'antiparasitage (70).
PCT/DE1991/000640 1990-09-07 1991-08-10 Dispositif electrique d'allumage generateur d'etincelles, notamment pour carburants gazeux Ceased WO1992004754A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19904028399 DE4028399A1 (de) 1990-09-07 1990-09-07 Elektrische, funkenerzeugende zuendvorrichtung, insbesondere fuer gasfoermige brennstoffe
DEP4028399.2 1990-09-07

Publications (1)

Publication Number Publication Date
WO1992004754A1 true WO1992004754A1 (fr) 1992-03-19

Family

ID=6413790

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1991/000640 Ceased WO1992004754A1 (fr) 1990-09-07 1991-08-10 Dispositif electrique d'allumage generateur d'etincelles, notamment pour carburants gazeux

Country Status (2)

Country Link
DE (1) DE4028399A1 (fr)
WO (1) WO1992004754A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1783525A (en) * 1926-12-06 1930-12-02 Patterson O Stewart Antifouling spark plug
FR751849A (fr) * 1932-06-04 1933-09-11 Perfectionnements d'une bougie d'allumage blindée
US2150725A (en) * 1937-06-02 1939-03-14 Eclipse Aviat Corp Method of forming a spark plug
US2186283A (en) * 1937-06-02 1940-01-09 Gen Motors Corp Spark plug

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7506656U (de) * 1975-07-03 Vaillant J Kg Zündelektrode
DE648840C (de) * 1935-11-01 1937-08-09 Robert Bosch Akt Ges Abgeschirmte Zuendkerze
DE1003508B (de) * 1954-01-08 1957-02-28 Bosch Gmbh Robert Befestigung des Isolators einer Zuendkerze fuer Brennkraftmaschinen im Kerzengehaeuse
FR1210006A (fr) * 1957-07-25 1960-03-04 Gen Motors Corp Bougie d'allumage perfectionnée
US3468004A (en) * 1961-07-13 1969-09-23 Champion Spark Plug Co Spark plug
DE2245403C2 (de) * 1972-09-15 1984-04-05 Robert Bosch Gmbh, 7000 Stuttgart Elektrisch leitende Dichtungsmasse für Zündkerzen, sowie Verfahren zur Herstellung derselben
DE2501576C2 (de) * 1975-01-16 1983-03-31 Neff - Werke, Carl Neff Gmbh, 7518 Bretten Hochspannungszündeinrichtung zum Zünden von Gasbrennstellen an Gasherden und dgl.
JPH0633672Y2 (ja) * 1988-07-06 1994-08-31 日本特殊陶業株式会社 極低温液体水素・液体酸素燃料用イグナイタプラグ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1783525A (en) * 1926-12-06 1930-12-02 Patterson O Stewart Antifouling spark plug
FR751849A (fr) * 1932-06-04 1933-09-11 Perfectionnements d'une bougie d'allumage blindée
US2150725A (en) * 1937-06-02 1939-03-14 Eclipse Aviat Corp Method of forming a spark plug
US2186283A (en) * 1937-06-02 1940-01-09 Gen Motors Corp Spark plug

Also Published As

Publication number Publication date
DE4028399A1 (de) 1992-03-12

Similar Documents

Publication Publication Date Title
EP0049372B1 (fr) Bougie pour moteurs à combustion interne
DE112009000215T5 (de) Masseabschirmung mit hohem Gewinde
CH688564A5 (de) Gekapselter elektrischer Zuender mit integriertem Ueberspannungsableiter fuer einen Gasgenerator.
DE10227371A1 (de) Herstellungsverfahren für Zündkerze mit piezoelektrischem Sensor und damit hergestellte Zündkerze
EP4211762A1 (fr) Bougie d'allumage de préchambre économique
DE3828738C2 (de) Zündkerze mit Drucksensor
EP0672312B1 (fr) Bougie d'allumage pour moteurs a combustion interne
DE102017109844B4 (de) Verfahren zum Herstellen einer Zündkerzenanordnung und Zündkerzenanordnung
DE19617794C2 (de) Zündspulen- und Zündkerzenanordnung für einen Verbrennungsmotor
DE10117641C2 (de) Stabglühkerze
EP0888655B1 (fr) Cosse de bougie d'allumage pour moteur a combustion interne
EP0103775B1 (fr) Bougie d'allumage à tige incandescente pour moteur à combustion interne
DE19636537A1 (de) Zündkerze für Brennkraftmaschinen
DE9012746U1 (de) Elektrische, funkenerzeugende Zündvorrichtung, insbesondere für gasförmige Brennstoffe
WO1992004754A1 (fr) Dispositif electrique d'allumage generateur d'etincelles, notamment pour carburants gazeux
EP0194292A1 (fr) Bougie-crayon de chauffage pour moteurs a combustion interne
EP0591686B1 (fr) Elément de connexion pour dispositif d'allumage
EP2016653B1 (fr) Bobine d'allumage, en particulier pour un moteur à combustion interne d'un véhicule automobile
DE19833316A1 (de) Zündkerze für eine Brennkraftmaschine
DE3147290C2 (fr)
DE2205720A1 (de) Hochspannungszuendkerze fuer brennkraftmaschinen
DE3530997A1 (de) Zuendvorrichtung fuer einen verbrennungsmotor
EP1575140B1 (fr) Bougie d'allumage
DE10004424A1 (de) Zündkerze
DE1204018B (de) Anordnung des Zuendkabelanschlusses an einer Zuendkerze

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): BR JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU NL SE