EP0235223A1 - Ignition device for internal combustion engines - Google Patents

Ignition device for internal combustion engines

Info

Publication number
EP0235223A1
EP0235223A1 EP86905282A EP86905282A EP0235223A1 EP 0235223 A1 EP0235223 A1 EP 0235223A1 EP 86905282 A EP86905282 A EP 86905282A EP 86905282 A EP86905282 A EP 86905282A EP 0235223 A1 EP0235223 A1 EP 0235223A1
Authority
EP
European Patent Office
Prior art keywords
spark plug
ignition device
combustion chamber
ignition
mixture
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.)
Withdrawn
Application number
EP86905282A
Other languages
German (de)
French (fr)
Inventor
Paul August
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.)
GLOTUR TRUST REG
Original Assignee
GLOTUR TRUST REG
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 GLOTUR TRUST REG filed Critical GLOTUR TRUST REG
Publication of EP0235223A1 publication Critical patent/EP0235223A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B19/00—Engines characterised by precombustion chambers
    • F02B19/12—Engines characterised by precombustion chambers with positive ignition
    • 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
    • H01T13/54—Sparking plugs having electrodes arranged in a partly-enclosed ignition chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the invention relates to an ignition device for internal combustion engines with a prechamber on the spark plug and a connection in the form of a throttle section on the prechamber to the combustion chamber of the engine.
  • the object of the invention is to design the ignition device in such a way that normal spark plugs can be used and only minor, structural changes are necessary.
  • the new ignition device with the normal spark plug can simply be screwed into existing engines without having to change the cylinder head.
  • the ignition device is based on an internal combustion engine with a prechamber on the spark plug and a connection designed as a throttle section from the prechamber to the combustion chamber of the engine. Such a device is described in DE-OS 2503811.
  • the throttle section is at least as long as the distance between Ignition electrode and start of the throttle section.
  • a preferred embodiment is that a plurality of flow channels, which are arranged obliquely to the throttle section, such that the inputs to the combustion chamber are further apart and the outputs to the prechamber of the spark plug are closer together. It is also important that the channels are arranged in such a way that the extended direction of the channels to the spark plug strikes the center electrode.
  • Another embodiment consists in that a through-flow channel to the spark plug is arranged which decreases towards the candle and forms a Lavall nozzle or type of Lavall nozzle in the countercurrent direction. It is also important that a flow channel Spark plug is arranged, which is reduced towards the candle and the middle electrode of the spark plug is arranged near the narrowest point.
  • the ignition device with a prechamber on the spark plug and one or more flow channels consists of one part, in which standard spark plugs with shorter or somewhat longer center electrodes are used.
  • Figure 1 shows a representation of the ignition device in the cylinder head of an internal combustion engine.
  • FIG. 2 shows another embodiment of the ignition device.
  • An ignition device 4 with a spark plug 5 is arranged in the cylinder head 1 of an internal combustion engine with cylinder 2 and piston 3.
  • the ignition chamber 4 contains a prechamber 7 in the area of the spark plug 5 and has several flow channels 8 from the prechamber 7 to the main combustion chamber 6 of the engine.
  • the flow channels 8 are arranged so that they diverge somewhat in the direction of the combustion chamber 6 and converge more in the direction of the combustion chamber 7.
  • Two, three or preferably four channels are provided. They run towards each other in the direction of the pre-chamber 7, so that the gas flowing through is directed in the direction of the spark plug 5 onto the center electrode 9 of the spark plug.
  • Figure 2 shows another embodiment of the invention.
  • a Channel 10 arranged, which narrows approximately in the middle of the ignition chamber 4 to a flow-through part 11.
  • the spark plug 5 has a longer center electrode 12 which extends close to the flow channel 11.
  • the piston 3 presses lean mixture into the combustion chamber 6.
  • Mixture is also pressed via the flow channels 8 into the prechamber 7 of the ignition chamber 4 at high pressure and high speed.
  • This mixture is essentially led first to the electrode 9 and there displaces the burned gas still present in the side space of the prechamber 7. Since the entrances of the flow channels 8 on the side of the combustion chamber 6 are further apart, flows from four different parts of the main ⁇ mixture to the electrode 9 of the spark plug 5.
  • This mixture then flows sideways from the electrode into the rest of the antechamber 7, so that a current flow of four mixture parts to the electrode 9 of the spark plug 5 and from there into the rest of the room the antechamber 7 takes place. This process ensures that the ignitable mixture comes to the candle and is ignited there.
  • the ignited mixture flows at high pressure through the four channels 8 into the combustion chamber 6 and simultaneously ignites the main mixture in the combustion chamber at four different points.
  • This inflowing burning gas is able to ignite very lean mixture components and cause them to burn quickly.
  • the combustion in the combustion chamber 6 is faster and more complete than usual. This enables the main mixture to be ignited later, which additionally brings about a reduction in the formation of NOx and also that CH lowers.
  • FIG. A through-flow channel 10 is arranged there, which narrows in the direction of the spark plug 5 to a narrow passage 11.
  • the central electrode 12 is so long that it almost reaches the passage 11.
  • the antechamber 13 is designed so that it forms a Lavall nozzle with the passages 11 and 10.
  • spark plugs can be used as standard and the flow of several gas channels leads the mixture to the center electrode of the candle, or a wide through channel 10 narrows near the center electrode 12 to a passage 11, and high Ge in the output flow direction ⁇ speed is achieved by the Lavall nozzle effect, whereby the ignited gas leads to a rapid complete combustion of the main mixture.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

Un dispositif d'allumage (4) est proposé pour des moteurs à combustion interne comprenant une chambre de précombustion (7) au niveau de la bougie d'allumage (5) et une connexion (8) servant de ligne d'étranglement entre la chambre de précombustion et la chambre de combustion (6) du moteur. Le but de l'invention est de créer un dispositif d'allumage qui permette l'utilisation de bougies ordinaires d'allumage avec uniquement des modifications structurales minimes. Pour ce faire, la ligne d'étranglement (8) est au moins aussi longue que la distance (14) entre l'électrode d'allumage et le début de la ligne d'étranglement. On peut ainsi utiliser des bougies d'allumage peu coûteuses, fabriquées en série, l'écoulement dans plusieurs conduites de gaz amène le mélange à l'électrode centrale de la bougie ou un large canal de passage se rétrécit à proximité de l'électrode centrale, et l'on obtient grâce à un effet de tuyère de Laval une vitesse élevée dans le sens de sortie de l'écoulement, ce qui fait que le gaz allumé provoque une combustion rapide et complète du mélange principal.An ignition device (4) is provided for internal combustion engines comprising a pre-combustion chamber (7) at the spark plug (5) and a connection (8) serving as a throttle line between the chamber. pre-combustion chamber and the combustion chamber (6) of the engine. The object of the invention is to provide an ignition device which allows the use of ordinary spark plugs with only minimal structural modifications. To do this, the throttle line (8) is at least as long as the distance (14) between the ignition electrode and the start of the throttle line. It is thus possible to use inexpensive, mass-produced spark plugs, the flow in several gas lines brings the mixture to the central electrode of the spark plug or a large passage channel narrows near the central electrode , and one obtains thanks to a Laval nozzle effect a high speed in the direction of exit of the flow, which makes that the ignited gas causes a rapid and complete combustion of the main mixture.

Description

Zündeinrichtung für Brennkraftmaschinen Ignition device for internal combustion engines
Die Erfindung bezieht sich auf eine Zündeinrichtung für Brennkraft¬ maschinen mit einer Vorkammer an der Zündkerze und einer als Drosselstrecke ausgebildeten Verbindung an der Vorkammer zur Brenn¬ kammer des Motors.The invention relates to an ignition device for internal combustion engines with a prechamber on the spark plug and a connection in the form of a throttle section on the prechamber to the combustion chamber of the engine.
Bei derartigen Ausführungen, wie sie z.B. in der DE-OS 2503811 be¬ schrieben sind, sind SpezialZündkerzen erforderlich, weil eine Zünd¬ einrichtung notwendig ist, die eine Mindestenergie von 50 Millijouls und eine Mindeststromstärkenspitze von 150 Milliamper erforderlich ist. Derartige Zünd-Anlagen erfordern SpezialZündkerzen und speziel¬ le Stromerzeuger. Beides ist aufwendig und teuer.In designs such as those e.g. In DE-OS 2503811, special spark plugs are required because an ignition device is required which requires a minimum energy of 50 millijouls and a minimum current peak of 150 milliamperes. Such ignition systems require special spark plugs and special power generators. Both are complex and expensive.
Aufgabe der Erfindung ist es, die Zündeinrichtung so auszubilden, daß normale Zündkerzen verwandt werden können und nur geringe, kon¬ struktive Änderungen notwendig sind. So kann z.B. die neue Zündein¬ richtung mit der normalen Zündkerze einfach in vorhandene Motoren eingeschraubt werden, ohne daß der Zylinderkopf geändert werden muß.The object of the invention is to design the ignition device in such a way that normal spark plugs can be used and only minor, structural changes are necessary. For example, the new ignition device with the normal spark plug can simply be screwed into existing engines without having to change the cylinder head.
Die Zündeinrichtung geht aus von einer Brennkraftmaschine mit einer Vorkammer an der Zündkerze und einer als Drosselstrecke ausgebildeten Verbindung von der Vorkammer zur Brennkammer des Motors. Eine derartige Vorrichtung ist in der DE-OS 2503811 be¬ schrieben.The ignition device is based on an internal combustion engine with a prechamber on the spark plug and a connection designed as a throttle section from the prechamber to the combustion chamber of the engine. Such a device is described in DE-OS 2503811.
Nachteile dieser Ausführungen werden dadurch vermieden, daß die Drosselstrecke mindestens so lang ist, wie der Abstand zwischen Zündelektrode und Beginn der Drosselstrecke.Disadvantages of these designs are avoided in that the throttle section is at least as long as the distance between Ignition electrode and start of the throttle section.
Durch diese Maßnahme wird erreicht, daß mit normalen Zündkerzen, d.h. auch normalem Zündstrom, extreme Magergemische zündfähig gemacht werden. Hier liegt die Erkenntnis zugrunde, daß die Zünd¬ kerze in ein Gehäuse gesetzt wird mit einer kleinen Vorkammer an der Kerze und Durchströmungskanälen zu der Brennkammer des Motors. Diese Durchströmungskanäle sind aufgrund ihrer Länge im Verhältnis zur Höhe der Vorkammer so ausgebildet, daß das Gemisch aus einem größeren Teil des Gesamtgemisches zur Zündkerze gebracht wird und andererseits ein sehr großer Strahl oder mehrere Strahle, gezündetes, brennendes Gemisch das Hauptgemisch der Brennkammer mit hohem Druck und hoher Geschwindigkeit gebracht wird und dort eine schnelle und totale Verbrennung bewirkt. Diese schnelle Verbrennung ermöglicht einen späteren Zündzeitpunkt, was zusätzlich zur Senkung der NOx beiträgt. Die totale Verbrennung verringert noch höher die CH und den Verbrauch.This measure ensures that with normal spark plugs, i.e. also normal ignition current, extreme lean mixtures can be made ignitable. This is based on the finding that the spark plug is placed in a housing with a small prechamber on the plug and flow channels to the combustion chamber of the engine. Due to their length in relation to the height of the prechamber, these flow channels are designed in such a way that the mixture of a larger part of the total mixture is brought to the spark plug and, on the other hand, a very large jet or several jets, ignited, burning mixture are the main mixture of the combustion chamber at high pressure and is brought at high speed and there causes a quick and total combustion. This rapid combustion enables a later ignition point, which also contributes to the reduction of the NOx. Total combustion reduces CH and consumption even more.
Eine bevorzugte Ausführung besteht darin, daß mehrere Durchströmungskanäle , die der Drosselstrecke schräg angeordnet sind, derart, daß die Eingänge an der Brennkammer weiter ausein¬ anderliegen und die Ausgänge zur Vorkammer der Zündkerze enger zusammen sind. Wichtig ist auch noch, daß die Kanäle so angeordnet sind, daß die verlängerte Richtung der Kanäle zur Zündkerze auf die Mittelelektrode stößt.A preferred embodiment is that a plurality of flow channels, which are arranged obliquely to the throttle section, such that the inputs to the combustion chamber are further apart and the outputs to the prechamber of the spark plug are closer together. It is also important that the channels are arranged in such a way that the extended direction of the channels to the spark plug strikes the center electrode.
Eine andere Ausführungsform besteht darin, daß ein Durchströmungs¬ kanal zur Zündkerze angeordnet ist, der sich zur Kerze hin verringert und in Gegenstromrichtung eine Lavalldüse oder Art Lavalldüse bildet. Wichtig ist auch, daß ein Durchströmungskanal der Zündkerze angeordnet ist, der sich zur Kerze hin verkleinert und nahe der engsten Stelle die mittlere Elektrode der Zündkerze angeordnet ist. Eine Ausführungsform, die sehr wesentlich ist, besteht darin, daß die Zündeinrichtung mit einer Vorkammer an der Zündkerze und einem oder mehreren Durchströmungskanälen aus einem Teil besteht, in den serienmässige Zündkerzen mit kürzeren oder etwas längeren Mittelelektroden eingesetzt werden.Another embodiment consists in that a through-flow channel to the spark plug is arranged which decreases towards the candle and forms a Lavall nozzle or type of Lavall nozzle in the countercurrent direction. It is also important that a flow channel Spark plug is arranged, which is reduced towards the candle and the middle electrode of the spark plug is arranged near the narrowest point. One embodiment, which is very essential, is that the ignition device with a prechamber on the spark plug and one or more flow channels consists of one part, in which standard spark plugs with shorter or somewhat longer center electrodes are used.
Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt. Dabei gehen aus den Zeichnungen und der Beschreibung weitere Erfindungsmerkmale hervor.Embodiments of the invention are shown in the drawing. Further features of the invention emerge from the drawings and the description.
Figur 1 zeigt eine Darstellung der Zündeinrichtung im Zylinderkopf einer Brennkraftmaschine.Figure 1 shows a representation of the ignition device in the cylinder head of an internal combustion engine.
Figur 2 zeigt eine andere Ausführung der Zündeinrichtung.Figure 2 shows another embodiment of the ignition device.
Im Zylinderkopf 1 einer Brennkraftmaschine mit Zylinder 2 und Kolben 3 ist eine Zündeinrichtung 4 mit Zündkerze 5 angeordnet. Die Zünd¬ kammer 4 enthält eine Vorkammer 7 im Bereich der Zündkerze 5 und hat mehrere Strömungskanäle 8 von der Vorkammer 7 zu der Hauptbrennkammer 6 des Motors. Die Strömungskanäle 8 sind so ange¬ ordnet, daß sie in Richtung Brennkammer 6 etwas auseinandergehen und in Richtung der Brennkammer 7 mehr zusammen laufen. Es werden zwei, drei oder vorzugsweise vier Kanäle vorgesehen. Sie laufen in Richtung der Vorkammer 7 aufeinander zu, so daß das durchströmende Gas in Richtung Zündkerze 5 auf die Mittelelektrode 9 der Zündkerze geleitet wird.An ignition device 4 with a spark plug 5 is arranged in the cylinder head 1 of an internal combustion engine with cylinder 2 and piston 3. The ignition chamber 4 contains a prechamber 7 in the area of the spark plug 5 and has several flow channels 8 from the prechamber 7 to the main combustion chamber 6 of the engine. The flow channels 8 are arranged so that they diverge somewhat in the direction of the combustion chamber 6 and converge more in the direction of the combustion chamber 7. Two, three or preferably four channels are provided. They run towards each other in the direction of the pre-chamber 7, so that the gas flowing through is directed in the direction of the spark plug 5 onto the center electrode 9 of the spark plug.
Figur 2 zeigt eine andere Ausführung der Erfindung. Hier ist ein Kanal 10 angeordnet, der sich etwa in der Mitte der Zündkammer 4 zu einem Durchströmungsteil 11 verengt. Die Zündkerze 5 hat eine längere Mittelelektrode 12, die bis nahe an den Durchströmungskanal 11 reicht.Figure 2 shows another embodiment of the invention. Here is a Channel 10 arranged, which narrows approximately in the middle of the ignition chamber 4 to a flow-through part 11. The spark plug 5 has a longer center electrode 12 which extends close to the flow channel 11.
Die Arbeitsweise und der Zündvorgang sind wie folgt:The mode of operation and the ignition process are as follows:
Beim Verdichtungstakt des Motors preßt der Kolben 3 Magergemisch in die Brennkammer 6. Dabei wird auch Gemisch über die Strömungskanäle 8 in die Vorkammer 7 der Zündkammer 4 mit hohem Druck und hoher Ge¬ schwindigkeit gepreßt. Dieses Gemisch wird im wesentlichen zuerst zur Elektrode 9 geführt und verdrängt dort das noch vorhandene ver¬ brannte Gas in den Seitenraum der Vorkammer 7. Da die Eingänge der Durchströmungskanäle 8 auf der Seite der Brennkammer 6 weiter auseinander liegen, strömt aus vier verschiedenen Teilen des Haupt¬ gemisches Gemisch zu der Elektrode 9 der Zündkerze 5. Dieses Gemisch strömt dann seitwärts von der Elektrode in den übrigen Raum der Vor¬ kammer 7, so daß eine laufende Strömung von vier Gemischteilen zur Elektrode 9 der Zündkerze 5 und von dort in den übrigen Raum der Vorkammer 7 stattfindet. Durch diesen Vorgang ist gewährleistet, daß zündfähiges Gemisch zur Kerze kommt und dort gezündet wird.During the compression stroke of the engine, the piston 3 presses lean mixture into the combustion chamber 6. Mixture is also pressed via the flow channels 8 into the prechamber 7 of the ignition chamber 4 at high pressure and high speed. This mixture is essentially led first to the electrode 9 and there displaces the burned gas still present in the side space of the prechamber 7. Since the entrances of the flow channels 8 on the side of the combustion chamber 6 are further apart, flows from four different parts of the main ¬ mixture to the electrode 9 of the spark plug 5. This mixture then flows sideways from the electrode into the rest of the antechamber 7, so that a current flow of four mixture parts to the electrode 9 of the spark plug 5 and from there into the rest of the room the antechamber 7 takes place. This process ensures that the ignitable mixture comes to the candle and is ignited there.
Das gezündete Gemisch strömt mit hohem Druck durch die vier Kanäle 8 in die Brennkammer 6 und zündet gleichzeitig an vier verschiedenen Stellen das Hauptgemisch in der Brennkammer. Dieses einströmende brennende Gas ist in der Lage, auch sehr magere Gemischanteile zu zünden und zu einer raschen Verbrennung zu bringen. So verläuft die Verbrennung in der Brennkammer 6 rascher und kompletter als sonst üblich. Dies ermöglicht eine spätere Zündung des Hauptgemisches, was zusätzlich eine Verringerung in der NOx-ßildung bringt und auch die CH senkt.The ignited mixture flows at high pressure through the four channels 8 into the combustion chamber 6 and simultaneously ignites the main mixture in the combustion chamber at four different points. This inflowing burning gas is able to ignite very lean mixture components and cause them to burn quickly. Thus, the combustion in the combustion chamber 6 is faster and more complete than usual. This enables the main mixture to be ignited later, which additionally brings about a reduction in the formation of NOx and also that CH lowers.
In Figur 2 ist eine andere Ausführung der Zündeinrichtung gezeigt. Dort ist ein Durchströmungskanal 10 angeordnet, der sich in Richtung Zündkerze 5 zu einem engen Durchgang 11 verkleinert. Die Mittel- elektrode 12 ist so lang, daß sie fast an den Durchgang 11 heran reicht. Die Vorkammer 13 ist so gestaltet, daß sie mit den Durch¬ gängen 11 und 10 eine Lavalldüse bildet.Another embodiment of the ignition device is shown in FIG. A through-flow channel 10 is arranged there, which narrows in the direction of the spark plug 5 to a narrow passage 11. The central electrode 12 is so long that it almost reaches the passage 11. The antechamber 13 is designed so that it forms a Lavall nozzle with the passages 11 and 10.
Beim Verdichtungstakt des Motors wird über die gepresste Öffnung des Durchströmungskanals 10 viel Gemisch gepresst, welches im Durchgang 11 eine hohe Geschwindigkeit erreicht. So strömt viel Gemisch mit hoher Geschwindigkeit zur Elektrode 12 der Zündkerze 5 und füllt unter seitlicher Verdrängung der verbrannten Restgase die Brennkammer 13. Nach Zündung dieses Gemisches strömt dies mit hohem Druck und hoher Geschwindigkeit (Lavalldüseneffekt) in die Brenn¬ kammer 6 des Motors, entzündet dort einwandfrei auch sehr magere Gemische, die rasch vollständig verbrennen.During the compression cycle of the engine, a large amount of mixture is pressed through the pressed opening of the flow channel 10, which mixture reaches a high speed in the passage 11. Much mixture flows at high speed to the electrode 12 of the spark plug 5 and fills the combustion chamber 13 with lateral displacement of the burned residual gases. After ignition of this mixture, it flows into the combustion chamber 6 of the engine at high pressure and high speed (Lavall nozzle effect) there also perfectly lean mixtures that burn completely quickly.
Durch die Erfindung wird erreicht, daß man serienmässig preiswerte Zündkerzen verwenden kann und die Strömung mehrerer Gaskanäle das Gemisch an die Mittelelektrode der Kerze führt, oder ein breiter Durchgangskanal 10 sich in der Nähe der Mittelelektrode 12 zu einem Durchgang 11 verengt, und in Ausgangsströmungsrichtung hohe Ge¬ schwindigkeit durch Lavalldüseneffekt erreicht wird, wodurch das gezündete Gas zu einer schnellen kompletten Verbrennung des Haupt¬ gemisches führt. By the invention it is achieved that inexpensive spark plugs can be used as standard and the flow of several gas channels leads the mixture to the center electrode of the candle, or a wide through channel 10 narrows near the center electrode 12 to a passage 11, and high Ge in the output flow direction ¬ speed is achieved by the Lavall nozzle effect, whereby the ignited gas leads to a rapid complete combustion of the main mixture.

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Zündeinrichtung für Brennkraftmaschinen mit einer Vorkammer (7,13) an der Zündkerze (5), d a d u c h g e k e n n z e i c n e t , daß die Drosselstrecke (8,10,11) minde¬ stens so lang ist, wie der Abstand (14) zwischen Zündkerze (5) und Beginn der Drosselstrecke.1. Ignition device for internal combustion engines with a prechamber (7, 13) on the spark plug (5), daduchgekennzeicnet that the throttle section (8, 10, 11) is at least as long as the distance (14) between the spark plug (5) and beginning of the throttle section.
2. Zündeinrichtung nach Anspruch 1, d a d u r c h g e k e n n z e i ch n e t, daß mehrere Durchströmungskanäle (8) in der Drosselstrecke schräg angeordnet sind derart, daß die Eingänge an der Brennkammer (6) weiter auseinanderliegen und die Ausgänge zur Vorkammer (7) an der Zündkerze (5) enger zusammen sind.2. Ignition device according to claim 1, dadurchgekennzei ch net that a plurality of flow channels (8) are arranged obliquely in the throttle section such that the inputs to the combustion chamber (6) are further apart and the outputs to the prechamber (7) on the spark plug (5) are closer together.
3. Zündeinrichtung nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß die Kanäle (8) so angeordnet sind, daß die verlängerte Richtung der Kanäle zur Zündkerze (5) auf die Mittelelektrode (9) stoßen.3. Ignition device according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the channels (8) are arranged so that the elongated direction of the channels to the spark plug (5) meet the center electrode (9).
4. Zündeinrichtung nach Anspruch 1, d a d u c h g e k e n n z e i c h n e t, daß ein Durchströmungskanal (10) zur Zündkerze angeordnet ist, der sich zur Zündkerze hin verkleinert und in Gegenströmungsrichtung eine Lavalldüse oder Art Lavalldüse bildet.4. Ignition device according to claim 1, d a d u c h g e k e n n z e i c h n e t that a flow channel (10) is arranged to the spark plug, which decreases in size towards the spark plug and forms a Lavall nozzle or type of Lavall nozzle in the counterflow direction.
5. Zündeinrichtung nach Anspruch 1, d a du r c h g e k e n n z e i c h n e t , daß ein Durchströmungskanal (10) zur Zündkerze (5) angeordnet ist, der sich zur Zündkerze hin verkleinert und nahe der engsten Stelle (11) der Mittelelektrode (12) der Zünd- kerze (5) angeordnet ist.5. Ignition device according to claim 1, since you rchgek characterized in that a flow channel (10) to the spark plug (5) is arranged, which shrinks towards the spark plug and near the narrowest point (11) of the center electrode (12) of the ignition candle (5) is arranged.
6. Zündeinrichtung nach Anspruch 1, d a d u r c g e k e n n z e i c h n e t , daß die Zündeinrichtung mit einer Vor¬ kammer (7) an der Zündkerze (5) und einem oder mehreren Durchströ¬ mungskanälen (10,8) aus einem Teil (4) besteht, in den serienmässige Zündkerzen mit kürzerer oder etwas längerer Mittelelektrode einsetz¬ bar sind. 6. Ignition device according to claim 1, characterized in that the ignition device with a pre-chamber (7) on the spark plug (5) and one or more flow channels (10, 8) consists of a part (4) in the standard spark plugs can be used with a shorter or somewhat longer center electrode.
EP86905282A 1985-09-04 1986-09-02 Ignition device for internal combustion engines Withdrawn EP0235223A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853531570 DE3531570A1 (en) 1985-09-04 1985-09-04 IGNITION DEVICE FOR INTERNAL COMBUSTION ENGINES
DE3531570 1985-09-04

Publications (1)

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EP0235223A1 true EP0235223A1 (en) 1987-09-09

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EP86905282A Withdrawn EP0235223A1 (en) 1985-09-04 1986-09-02 Ignition device for internal combustion engines

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EP (1) EP0235223A1 (en)
AU (1) AU6288686A (en)
DE (1) DE3531570A1 (en)
ES (1) ES2000884A6 (en)
WO (1) WO1987001523A1 (en)

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US8858770B2 (en) * 2007-04-04 2014-10-14 Netbio, Inc. Plastic microfluidic separation and detection platforms

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Publication number Priority date Publication date Assignee Title
US7270107B2 (en) * 2006-01-20 2007-09-18 Cameron International Corporation Bolted pre-combustion chamber
WO2008052246A1 (en) * 2006-10-31 2008-05-08 Turner, Geoffrey Russell Internal combustion engine and method

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GB190929947A (en) * 1909-12-22 1910-09-29 Robert Edward Phillips Improvements in and relating to the Igniting of the Charges in Internal Combustion Engines.
DE391788C (en) * 1922-09-24 1924-03-14 Dipl Raufm Eberhard Gottschau Explosion engine with auxiliary explosion chamber
US2238852A (en) * 1939-07-08 1941-04-15 Harold D Regar Spark plug
FR1192305A (en) * 1956-12-03 1959-10-26 Method and means for controlling combustion in internal combustion engines
FR89398E (en) * 1966-01-13 1967-06-16 Renault Improvements to internal combustion engines
IT12706A (en) * 1969-02-11
US4029072A (en) * 1973-08-27 1977-06-14 Toyota Jidosha Kogyo Kabushiki Kaisha Igniting apparatus for internal combustion engines
DE2524453A1 (en) * 1975-06-03 1976-12-16 Eberhard Floegel Compression ratio reduction adapter for IC engine - is screwed into sparking plug hole and has sparking plug screwed into top
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8858770B2 (en) * 2007-04-04 2014-10-14 Netbio, Inc. Plastic microfluidic separation and detection platforms

Also Published As

Publication number Publication date
WO1987001523A1 (en) 1987-03-12
ES2000884A6 (en) 1988-03-16
DE3531570A1 (en) 1987-03-05
AU6288686A (en) 1987-03-24

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