EP4115064A1 - Spark-ignited reciprocating piston internal combustion engine comprising a pre-chamber ignition system - Google Patents

Spark-ignited reciprocating piston internal combustion engine comprising a pre-chamber ignition system

Info

Publication number
EP4115064A1
EP4115064A1 EP21704210.0A EP21704210A EP4115064A1 EP 4115064 A1 EP4115064 A1 EP 4115064A1 EP 21704210 A EP21704210 A EP 21704210A EP 4115064 A1 EP4115064 A1 EP 4115064A1
Authority
EP
European Patent Office
Prior art keywords
internal combustion
combustion engine
ignition system
housing
chamber
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Withdrawn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
EP21704210.0A
Other languages
German (de)
French (fr)
Inventor
Daniel Taterra
Erik Schaefer
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP4115064A1 publication Critical patent/EP4115064A1/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Withdrawn legal-status Critical Current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
    • F02B19/16—Chamber shapes or constructions not specific to sub-groups F02B19/02 - F02B19/10
    • F02B19/18—Transfer passages between chamber and cylinder
    • 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
    • F02B19/00—Engines characterised by precombustion chambers
    • F02B19/10—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder
    • F02B19/1004—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder details of combustion chamber, e.g. mounting arrangements
    • F02B19/1014—Engines characterised by precombustion chambers with fuel introduced partly into pre-combustion chamber, and partly into cylinder details of combustion chamber, e.g. mounting arrangements design parameters, e.g. volume, torch passage cross sectional area, length, orientation, or the like
    • 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 externally ignited reciprocating internal combustion engine with a prechamber ignition system with the features from the preamble of claim 1.
  • an ignition device for igniting fuel-air mixtures in a combustion chamber of an internal combustion engine by means of a corona discharge is known, with an ignition electrode, an outer conductor surrounding the ignition electrode, which has a front and a rear end and with one between the ignition electrode and the outer conductor arranged electrical insulator, from which at least one tip of the ignition electrode protrudes.
  • the at least one tip of the ignition electrode lies in a space which is shielded by a cap assigned to the insulator, which has an inside facing the insulator and an outside facing away from the insulator, as well as one or more holes through which the shielded space and one on the outside The space lying on the cap, the combustion chamber, is in communication.
  • a spark plug for igniting a combustible gas mixture in an internal combustion engine comprising: an ignition electrode, an electrical supply line to which the ignition electrode is connected, an insulator body through which the supply line is passed, a housing head which sits sealingly on the insulator body and an external thread for screwing into an internal combustion engine, a tubular housing which is fastened to the housing head, surrounds the insulator body and carries a hexagon, the tubular housing having a Surrounds the insulator body holder, which is welded to the housing head via a weld seam and presses the insulator body against the housing head with a pretension.
  • a spark plug is also known from the German patent application DE 102016206992 A1.
  • the spark plug is in particular a prechamber spark plug with a housing, an ignition electrode and a ground electrode, the ignition electrode being able to be subjected to an electrical voltage via a supply line and the supply line running at least partially within an insulator, with at least one discharge area of the housing is made of a material with a thermal conductivity of over 150 W / mK.
  • Passive and active prechamber spark plug variants have a certain number of openings for the flames to pass into the combustion chamber in their lids and they differ primarily in the number of openings, their diameter and their orientation.
  • the object of the present invention is to provide a measure with which the ignitability of a prechamber ignition system can be ensured in a low load and / or speed range of an internal combustion engine and the exhaust gas temperatures can be lowered.
  • a ratio of less than 150 leads to slower combustion in the combustion chambers of the internal combustion engine, which is not sufficient for lowering the exhaust gas temperature at a liter output of 120 kW / i.
  • the volume is understood to be the volume of the prechamber ignition system, the jet cross section is defined as the sum of the cross sections of all openings in the cover of the prechamber ignition system towards the combustion chamber.
  • the jets that emerge from the pre-chamber ignition system during combustion have the greatest penetration depth into the combustion chamber, which leads to rapid combustion.
  • the faster the combustion the faster possible knocking pockets are ignited.
  • the exhaust gas temperature drops in an advantageous manner. It has been found to be particularly advantageous if the opening in the cover consists of at least three partial openings, then the penetration depth of the combustion jets into the combustion chamber is particularly great for reliable ignition of the fuel / air mixture.
  • Fig. 1 shows a section through an antechamber ignition system.
  • FIG. 1 shows a section through a prechamber ignition system 1 for an externally ignited floating piston internal combustion engine with a housing 2, which in this exemplary embodiment is formed radially on the outside by a cylinder head material of a cylinder head 3 of the floating piston internal combustion engine.
  • An ignition device 4 is arranged in the prechamber ignition system 1 and projects into a flea space 5 in the housing 2.
  • a spark plug, a corona ignition system or some other ignition device for externally ignited internal combustion engines can be provided as the ignition device.
  • the flea chamber 5 is covered by a cover 7 on the side facing away from the ignition device 4, opposite a combustion chamber 6 of the floating piston internal combustion engine.
  • the cover 7 has at least one first opening 8 which connects the flea chamber 5 and the combustion chamber 6 to one another in a gas-carrying manner.
  • two openings 8 can be seen. These openings 8 can be bores in the cover 7, for example.
  • the cover 7 itself can be connected to the cylinder head 3 in a material and / or form-fitting manner.
  • a fuel injector 9 can be seen in FIG. 1, with which fuel can be introduced into the combustion chamber 6 of the floating piston internal combustion engine in order to produce a combustible fuel / air mixture in the combustion chamber 6.
  • the housing 2 or the flea space 5 have a volume and the at least one opening 8 has a jet cross section, the ratio of volume to jet cross section being greater than 100 and less than 300, in particular is greater than 150 and less than 220.
  • the opening 8 is preferably formed by at least three individual openings.
  • a cavity 5 of an antechamber ignition system 1 has, for example, a volume V of 1848 mm 3 and is provided with eight openings 8 in the form of bores with a diameter D of 1.3 mm each.
  • the embodiment of the prechamber ignition system 1 according to the invention can be used both for passive prechamber ignition systems, as shown here, and for active prechamber ignition systems with their own introduction of fuel into the cavity 5.
  • the housing 2 can also be formed as a separate housing 2, which is introduced into the cylinder head 3, instead of the cylinder head material.

Abstract

The invention relates to a spark-ignited reciprocating piston internal combustion engine comprising a pre-chamber ignition system with a housing, which can be built into a cylinder head of the reciprocating piston internal combustion engine and in which an ignition device is arranged, which projects into a hollow space in the housing, wherein the hollow space is covered by a cover relative to a combustion chamber of the reciprocating piston internal combustion engine, wherein the cover has at least one first opening, which connects the hollow space and the combustion chamber to one another in a gas-guiding manner, wherein the housing has a volume and the at least one opening has a flow cross-section and the ratio of the volume to the flow cross-section is greater than 100 and less than 300, in particular greater than 150 and less than 220. Due to the configuration of the pre-chamber ignition system according to the invention, the ignition of a fuel/air mixture in the pre-chamber ignition system is significantly improved with a low load and/or rotational speed of the internal combustion engine and the exhaust gas temperatures are simultaneously lowered.

Description

Fremd gezündete Hubkolben-Brennkraftmaschine mit einem Vorkammerzündsystem Externally ignited reciprocating internal combustion engine with a prechamber ignition system
Die Erfindung betrifft eine fremd gezündete Hubkolben-Brennkraftmaschine mit einem Vorkammerzündsystem mit den Merkmalen aus dem Oberbegriff des Patentanspruchs 1. The invention relates to an externally ignited reciprocating internal combustion engine with a prechamber ignition system with the features from the preamble of claim 1.
Zum technischen Umfeld wird beispielsweise auf die deutsche Offenlegungsschrift DE 102014 111 897 A1 hingewiesen. Aus dieser ist eine Zündeinrichtung zum Zünden von Brennstoff-Luft-Gemischen in einer Brennkammer eines Verbrennungsmotors mittels einer Corona-Entladung bekannt, mit einer Zündelektrode, einen die Zündelektrode umgebenden Außenleiter, welcher ein vorderes und ein hinteres Ende hat und mit einem zwischen der Zündelektrode und dem Außenleiter angeordneten elektrischen Isolator, aus welchem wenigstens eine Spitze der Zündelektrode herausragt. Die wenigstens eine Spitze der Zündelektrode liegt in einem Raum, der durch eine dem Isolator zugeordnete Kappe abgeschirmt ist, die eine dem Isolator zugewandte Innenseite und eine dem Isolator abgewandte Außenseite sowie eines oder mehrere Löcher hat, durch welche der abgeschirmte Raum mit einem auf der Außenseite der Kappe liegenden Raum, der Brennkammer, in Verbindung steht. With regard to the technical environment, reference is made, for example, to German laid-open specification DE 102014 111 897 A1. From this an ignition device for igniting fuel-air mixtures in a combustion chamber of an internal combustion engine by means of a corona discharge is known, with an ignition electrode, an outer conductor surrounding the ignition electrode, which has a front and a rear end and with one between the ignition electrode and the outer conductor arranged electrical insulator, from which at least one tip of the ignition electrode protrudes. The at least one tip of the ignition electrode lies in a space which is shielded by a cap assigned to the insulator, which has an inside facing the insulator and an outside facing away from the insulator, as well as one or more holes through which the shielded space and one on the outside The space lying on the cap, the combustion chamber, is in communication.
Weiter ist aus der internationalen Patentanmeldung mit der internationalen Veröffentlichungsnummer WO 2008/031482 A2 eine Zündkerze zum Zünden eines brennbaren Gasgemisches beim Verbrennungsmotor bekannt, umfassend: eine Zündelektrode, eine elektrische Versorgungsleitung, an welche die Zündelektrode angeschlossen ist, einen Isolatorkörper, durch den die Versorgungsleitung hindurchgeführt ist, ein Gehäusekopf, der dichtend auf dem Isolatorkörper sitzt und ein Außengewinde zum Einschrauben in einen Verbrennungsmotor, ein Rohrgehäuse, das an dem Gehäusekopf befestigt ist, den Isolatorkörper umgibt und einen Sechskant trägt, wobei das Rohrgehäuse eine Isolatorkörper-Halterung umgibt, die über eine Schweißnaht mit dem Gehäusekopf verschweißt ist und den Isolatorkörper mit einer Vorspannung gegen den Gehäusekopf presst. Furthermore, from the international patent application with the international publication number WO 2008/031482 A2, a spark plug for igniting a combustible gas mixture in an internal combustion engine is known, comprising: an ignition electrode, an electrical supply line to which the ignition electrode is connected, an insulator body through which the supply line is passed, a housing head which sits sealingly on the insulator body and an external thread for screwing into an internal combustion engine, a tubular housing which is fastened to the housing head, surrounds the insulator body and carries a hexagon, the tubular housing having a Surrounds the insulator body holder, which is welded to the housing head via a weld seam and presses the insulator body against the housing head with a pretension.
Zum weiteren technischen Umfeld wird ferner auf die deutsche Offenlegungsschrift DE 102016 120984 A1 hingewiesen. Aus dieser Offenlegungsschrift ist eine Vorkammerzündkerze für eine mit Gas betriebene Brennkraftmaschine und ein Verfahren zu deren Herstellung bekannt. Reference is also made to the German patent application DE 102016 120984 A1 for further technical information. A prechamber spark plug for a gas-operated internal combustion engine and a method for its production are known from this laid-open specification.
Weiter ist aus der deutschen Offenlegungsschrift DE 102016206992 A1 eine Zündkerze bekannt. Bei der Zündkerze handelt es sich insbesondere um eine Vorkammerzündkerze, mit einem Gehäuse, einer Zündelektrode und einer Masseelektrode, wobei die Zündelektrode über eine Versorgungsleitung mit einer elektrischen Spannung beaufschlagbar ist und wobei die Versorgungsleitung zumindest teilweise innerhalb eines Isolators verläuft, wobei zumindest ein Ableitungsbereich des Gehäuses aus einem Material mit einer Wärmeleitfähigkeit von über 150 W/mK hergestellt ist. A spark plug is also known from the German patent application DE 102016206992 A1. The spark plug is in particular a prechamber spark plug with a housing, an ignition electrode and a ground electrode, the ignition electrode being able to be subjected to an electrical voltage via a supply line and the supply line running at least partially within an insulator, with at least one discharge area of the housing is made of a material with a thermal conductivity of over 150 W / mK.
Passive und aktive Vorkammerzündkerzen-Varianten weisen eine gewisse Anzahl von Durchbrüchen zum Durchtritt der Flammen in den Brennraum in ihren Deckeln auf und sie unterscheiden sich vor allem in der Anzahl der Durchbrüche, deren Durchmesser und deren Ausrichtung. Passive and active prechamber spark plug variants have a certain number of openings for the flames to pass into the combustion chamber in their lids and they differ primarily in the number of openings, their diameter and their orientation.
Im Hinblick auf einen Lambda=1 (stöchiometrischen) Betrieb der Brennkraftmaschine im gesamten Kennfeld ist es entscheidend, die Abgastemperatur vor der Turbine eines Abgasturboladers sowie die Abgastemperatur im Katalysator zu senken um thermische Bauteilschäden zu vermeiden. Nachteilig an diesen bekannten Vorkammerzündsystemen ist, dass im niedrigen Last- und/oder Drehzahlbereich einer Brennkraftmaschine kein oder kaum ein ausreichender Gasaustauch innerhalb des Vorkammerzündsystems stattfindet, sodass in diesen Last-und/oder Drehzahlbereichen eine sichere Zündung des Kraftstoff-Luft-Gemisches nicht immer gewährleistet ist. Auch eine Absenkung der Abgastemperaturen ist für einen stöchiometrischen Betrieb zum Bauteilschutz anzustreben. With regard to a lambda = 1 (stoichiometric) operation of the internal combustion engine in the entire map, it is crucial to reduce the exhaust gas temperature in front of the turbine of an exhaust gas turbocharger and the exhaust gas temperature in the catalytic converter in order to avoid thermal component damage. The disadvantage of these known prechamber ignition systems is that in the low load and / or speed range of an internal combustion engine there is little or no gas exchange within the prechamber ignition system, so that reliable ignition of the fuel-air mixture is not always guaranteed in these load and / or speed ranges is. A reduction in exhaust gas temperatures is also desirable for stoichiometric operation to protect components.
Aufgabe der vorliegenden Erfindung ist es, eine Maßnahme aufzuzeigen, mit der die Zündfähigkeit eines Vorkammerzündsystems in einem niedrigen Last- und/oder Drehzahlbereich einer Brennkraftmaschine sichergestellt und die Abgastemperaturen abgesenkt werden können. The object of the present invention is to provide a measure with which the ignitability of a prechamber ignition system can be ensured in a low load and / or speed range of an internal combustion engine and the exhaust gas temperatures can be lowered.
Diese Aufgabe wird durch das Merkmal im kennzeichnenden Teil des Patentanspruchs 1 gelöst. This object is achieved by the feature in the characterizing part of claim 1.
Eine vorteilhafte Weiterbildung der Erfindung ist in dem Unteranspruch beschrieben. An advantageous development of the invention is described in the dependent claim.
Erfindungsgemäß sollte das Verhältnis des Volumens (= Hohlraum) des Vorkammerzündsystems / Strahlquerschnitt [mm3/mm2] zwischen 100 und 300 liegen, bevorzugt größer 150 und kleiner 220 sein. Ein Verhältnis von unter 150 führt zu einer verlangsamten Verbrennung in den Brennräumen der Brennkraftmaschine, welche nicht ausreichend für die Senkung der Abgastemperatur bei einer Literleistung von 120 kW/i ist. Unter dem Volumen versteht man das Volumen des Vorkammerzündsystems, der Strahlquerschnitt definiert sich als die Summe der Querschnitte aller Durchbrüche im Deckel des Vorkammerzündsystems zum Brennraum hin. According to the invention, the ratio of the volume (= cavity) of the prechamber ignition system / beam cross section [mm 3 / mm 2 ] should be between 100 and 300, preferably greater than 150 and less than 220. A ratio of less than 150 leads to slower combustion in the combustion chambers of the internal combustion engine, which is not sufficient for lowering the exhaust gas temperature at a liter output of 120 kW / i. The volume is understood to be the volume of the prechamber ignition system, the jet cross section is defined as the sum of the cross sections of all openings in the cover of the prechamber ignition system towards the combustion chamber.
Liegt das Verhältnis von Volumen / Strahlquerschnitt [mm3/mm2] zwischen 150 - 220 so haben die Brennstrahlen (Jets) die aus dem Vorkammerzündsystem bei einer Verbrennung hervortreten die größte Eindringtiefe in den Brennraum welches zu einer schnellen Verbrennung führt. Je schneller die Verbrennung desto schneller werden auch mögliche Klopfnester entflammt. Zudem sinkt die Abgastemperatur in vorteilhafter Weise. Als besonders vorteilhaft hat sich herausgestellt, wenn der Durchbruch im Deckel aus zumindest drei Teildurchbrüchen besteht, dann ist die Eindringtiefe der Brennstrahlen (Jets) in den Brennraum besonders groß, für eine sichere Entzündung des Kraftstoff-/Luft-Gemisches. If the ratio of volume / jet cross-section [mm 3 / mm 2 ] is between 150 - 220, the jets that emerge from the pre-chamber ignition system during combustion have the greatest penetration depth into the combustion chamber, which leads to rapid combustion. The faster the combustion, the faster possible knocking pockets are ignited. In addition, the exhaust gas temperature drops in an advantageous manner. It has been found to be particularly advantageous if the opening in the cover consists of at least three partial openings, then the penetration depth of the combustion jets into the combustion chamber is particularly great for reliable ignition of the fuel / air mixture.
Im Folgenden ist die Erfindung anhand eines Ausführungsbeispiels kurz erläutert. The invention is briefly explained below using an exemplary embodiment.
Fig. 1 zeigt einen Schnitt durch ein Vorkammerzündsystem. Fig. 1 shows a section through an antechamber ignition system.
Figur 1 zeigt einen Schnitt durch ein Vorkammerzündsystem 1 für eine fremd gezündete Flubkolben-Brennkraftmaschine mit einem Gehäuse 2, welches in diesem Ausführungsbeispiel radial außen von einem Zylinderkopfmaterial eines Zylinderkopfes 3 der Flubkolben-Brennkraftmaschine gebildet ist. In dem Vorkammerzündsystem 1 ist eine Zündvorrichtung 4 angeordnet ist, die in einen Flohlraum 5 in dem Gehäuse 2 ragt. Als Zündvorrichtung kann beispielsweise eine Zündkerze, ein Corona-Zündsystem oder eine sonstige Zündvorrichtung für fremd gezündete Brennkraftmaschinen vorgesehen werden. FIG. 1 shows a section through a prechamber ignition system 1 for an externally ignited floating piston internal combustion engine with a housing 2, which in this exemplary embodiment is formed radially on the outside by a cylinder head material of a cylinder head 3 of the floating piston internal combustion engine. An ignition device 4 is arranged in the prechamber ignition system 1 and projects into a flea space 5 in the housing 2. For example, a spark plug, a corona ignition system or some other ignition device for externally ignited internal combustion engines can be provided as the ignition device.
Weiter ist der Flohlraum 5 auf der, der Zündvorrichtung 4 abgewandten Seite gegenüber einem Brennraum 6 der Flubkolben-Brennkraftmaschine von einem Deckel 7 abgedeckt. Der Deckel 7 weist zumindest einen ersten Durchbruch 8 auf, der den Flohlraum 5 und den Brennraum 6 Gas führend miteinander verbindet. In dem vorliegenden Ausführungsbeispiel sind zwei Durchbrüche 8 erkennbar. Diese Durchbrüche 8 können beispielsweise Bohrungen in dem Deckel 7 sein. Der Deckel 7 kann selber Stoff- und/oder formschlüssig mit dem Zylinderkopf 3 verbunden sein. Furthermore, the flea chamber 5 is covered by a cover 7 on the side facing away from the ignition device 4, opposite a combustion chamber 6 of the floating piston internal combustion engine. The cover 7 has at least one first opening 8 which connects the flea chamber 5 and the combustion chamber 6 to one another in a gas-carrying manner. In the present exemplary embodiment, two openings 8 can be seen. These openings 8 can be bores in the cover 7, for example. The cover 7 itself can be connected to the cylinder head 3 in a material and / or form-fitting manner.
Weiter ist in Fig. 1 ein Kraftstoffinjektor 9 erkennbar, mit dem Kraftstoff in den Brennraum 6 der Flubkolben-Brennkraftmaschine zur Darstellung eines brennbaren Kraftstoff-/Luftgemisches in dem Brennraum 6 einbringbar ist. Furthermore, a fuel injector 9 can be seen in FIG. 1, with which fuel can be introduced into the combustion chamber 6 of the floating piston internal combustion engine in order to produce a combustible fuel / air mixture in the combustion chamber 6.
Erfindungsgemäß weisen das Gehäuse 2 bzw. der Flohlraum 5 ein Volumen und der zumindest eine Durchbruch 8 einen Strahlquerschnitt auf, wobei das Verhältnis von Volumen zu Strahlquerschnitt größer als 100 und kleiner als 300, insbesondere größer als 150 und kleiner als 220 ist. In bevorzugterWeise ist der Durchbruch 8 von zumindest drei Einzeldurchbrüchen gebildet. According to the invention, the housing 2 or the flea space 5 have a volume and the at least one opening 8 has a jet cross section, the ratio of volume to jet cross section being greater than 100 and less than 300, in particular is greater than 150 and less than 220. The opening 8 is preferably formed by at least three individual openings.
Beispiel: Example:
Ein Hohlraum 5 eines Vorkammerzündsystems 1 hat beispielsweise ein Volumen V von 1848 mm3 und ist mit acht Durchbrüchen 8 in Form von Bohrungen mit einem Durchmesser D von je 1 ,3 mm versehen. A cavity 5 of an antechamber ignition system 1 has, for example, a volume V of 1848 mm 3 and is provided with eight openings 8 in the form of bores with a diameter D of 1.3 mm each.
Die Rechnung lautetet: The calculation reads:
Verhältnis = V [mm3] / (D2 * pi/4) [mm2] * Anzahl Durchbrüche = 1848 [mm3] / (1 ,32 * 3,14/4) [mm2] * 8 = 1848 [mm3] / 10,6 [mm2] Ratio = V [mm 3 ] / (D 2 * pi / 4) [mm 2 ] * number of openings = 1848 [mm 3 ] / (1, 3 2 * 3.14 / 4) [mm 2 ] * 8 = 1848 [mm 3 ] / 10.6 [mm 2 ]
= 174,3 [mm] = 174.3 [mm]
Abschließend sei noch gesagt, dass die erfindungsgemäße Ausgestaltung des Vorkammerzündsystems 1 sowohl für passive Vorkammerzündsysteme, wie hier dargestellt, als auch für aktive Vorkammerzündsysteme, mit eigener Einbringung von Kraftstoff in den Hohlraum 5, eingesetzt werden kann. Finally, it should be said that the embodiment of the prechamber ignition system 1 according to the invention can be used both for passive prechamber ignition systems, as shown here, and for active prechamber ignition systems with their own introduction of fuel into the cavity 5.
In einem weiteren Ausführungsbeispiel kann das Gehäuse 2 anstelle von dem Zylinderkopfmaterial gebildet, auch als ein separates Gehäuse 2, welches in den Zylinderkopf 3 eingebracht wird, dargestellt werden. In a further exemplary embodiment, the housing 2 can also be formed as a separate housing 2, which is introduced into the cylinder head 3, instead of the cylinder head material.
Bezugszeichenliste List of reference symbols
1. Vorkammerzündsystem1. Pre-chamber ignition system
2. Gehäuse 2. Housing
3. Zylinderkopf 3. cylinder head
4. Zündvorrichtung 4. Ignition device
5. Hohlraum 5. cavity
6. Brennraum 6. combustion chamber
7. Deckel 7. Lid
8. Durchbruch 8. Breakthrough
9. Kraftstoffinjektor 9. Fuel injector

Claims

Ansprüche Expectations
1. Fremd gezündete Hubkolben-Brennkraftmaschine mit einem Vorkammerzündsystem (1) mit einem Gehäuse (2), welches in einem Zylinderkopf (3) der Hubkolben-Brennkraftmaschine verbaubar ist und in dem eine Zündvorrichtung (4) angeordnet ist, die in einen Hohlraum (5) in dem Gehäuse (2) ragt, wobei der Hohlraum (5) gegenüber einem Brennraum (6) der Hubkolben-Brennkraftmaschine von einem Deckel (7) abgedeckt ist, wobei der Deckel (7) zumindest einen ersten Durchbruch (8) aufweist, der den Hohlraum (5) und den Brennraum (6) Gas führend miteinander verbindet, dadurch gekennzeichnet, dass das Gehäuse (2) ein Volumen und der zumindest eine Durchbruch (8) einen Strahlquerschnitt aufweist und das Verhältnis Volumen zu Strahlquerschnitt größer als 100 und kleiner als 300, insbesondere größer als 150 und kleiner als 220 ist. 1. Externally ignited reciprocating internal combustion engine with a prechamber ignition system (1) with a housing (2) which can be installed in a cylinder head (3) of the reciprocating internal combustion engine and in which an ignition device (4) is arranged which is inserted into a cavity (5 ) protrudes into the housing (2), the cavity (5) being covered by a cover (7) opposite a combustion chamber (6) of the reciprocating internal combustion engine, the cover (7) having at least one first opening (8) which connecting the cavity (5) and the combustion chamber (6) leading to gas, characterized in that the housing (2) has a volume and the at least one opening (8) has a jet cross-section and the ratio of volume to jet cross-section is greater than 100 and less than 300, in particular greater than 150 and less than 220.
2. Hubkolben-Brennkraftmaschine nach Anspruch 1 , dadurch gekennzeichnet, dass der Durchbruch (8) von zumindest drei Einzeldurchbrüchen gebildet ist. 2. Reciprocating internal combustion engine according to claim 1, characterized in that the opening (8) is formed by at least three individual openings.
EP21704210.0A 2020-03-05 2021-02-04 Spark-ignited reciprocating piston internal combustion engine comprising a pre-chamber ignition system Withdrawn EP4115064A1 (en)

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DE102020105921.3A DE102020105921A1 (en) 2020-03-05 2020-03-05 Externally ignited reciprocating internal combustion engine with a prechamber ignition system
PCT/EP2021/052646 WO2021175536A1 (en) 2020-03-05 2021-02-04 Spark-ignited reciprocating piston internal combustion engine comprising a pre-chamber ignition system

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Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5224608A (en) 1975-08-16 1977-02-24 Daihatsu Motor Co Ltd Single mixed gas type gasoline engine
DE3331116A1 (en) 1983-08-30 1985-03-14 Robert Bosch Gmbh, 7000 Stuttgart Method for the operation of an internal combustion engine with at least one main combustion chamber and an assigned ignition chamber and internal combustion engine for implementing the method
US4926818A (en) * 1989-02-24 1990-05-22 The Regents Of The University Of California Pulsed jet combustion generator for premixed charge engines
US4987868A (en) * 1989-05-08 1991-01-29 Caterpillar Inc. Spark plug having an encapsulated center firing electrode gap
US4924829A (en) * 1989-09-11 1990-05-15 General Motors Corporation Apparatus for torch jet assisted spark ignition
US5105780A (en) * 1990-08-08 1992-04-21 Caterpillar Inc. Ignition assisting device for internal combustion engines
FR2846044B1 (en) * 2002-10-18 2006-07-14 Peugeot Citroen Automobiles Sa PRECHAMBRE IGNITION DEVICE COATED WITH A REFRACTORY COATING, FOR AN INTERNAL COMBUSTION ENGINE, AND PRE-CHAMBER IGNITER
FR2846046B1 (en) 2002-10-18 2006-06-16 Peugeot Citroen Automobiles Sa PRE-CHAMBER IGNITION DEVICE FOR INTERNAL COMBUSTION ENGINE, PRE-CHAMBER IGNITER, AND IGNITION METHOD
JP2005090381A (en) * 2003-09-18 2005-04-07 Niigata Power Systems Co Ltd Pilot oil ignition gas engine
JP2007113536A (en) * 2005-10-24 2007-05-10 Nissan Motor Co Ltd Sub-chamber type internal-combustion engine
DE102006043593B3 (en) 2006-09-16 2008-04-10 Multitorch Gmbh spark plug
DE102007060560A1 (en) * 2007-12-15 2009-06-18 Man Diesel Se Gas engine i.e. mixture-compressing gas-petrol engine, for combustion of gaseous air-fuel mixture, has heating element actively initiating self ignition temperature for igniting gaseous fuel during starting process
WO2012061397A2 (en) * 2010-11-01 2012-05-10 Mahle Powertrain, Llc Turbulent jet ignition pre-chamber combustion system for spark ignition engines
US8350457B2 (en) * 2011-03-31 2013-01-08 Denso International America, Inc. Pre-chamber spark plug including a gas thread cavity
US9217360B2 (en) * 2011-12-01 2015-12-22 Cummins Intellectual Property, Inc. Prechamber device for internal combustion engine
US9797296B2 (en) * 2013-03-15 2017-10-24 Cummins Inc. Pre-chamber for internal combustion engine
DE102014111897B4 (en) 2013-10-31 2020-06-25 Borgwarner Ludwigsburg Gmbh Ignition device for igniting fuel-air mixtures in a combustion chamber of an internal combustion engine by means of a corona discharge
EP3173596B1 (en) * 2015-11-25 2020-04-01 Caterpillar Energy Solutions GmbH Pre-combustion chamber assembly for internal combustion engines
DE102016206992A1 (en) 2016-04-25 2017-10-26 Dkt Verwaltungs-Gmbh spark plug
DE102016218707A1 (en) * 2016-09-28 2018-03-29 Bayerische Motoren Werke Aktiengesellschaft Reciprocating internal combustion engine
DE102016120984B4 (en) 2016-11-03 2018-10-18 Federal-Mogul Ignition Gmbh Prechamber spark plug for a gas-fueled internal combustion engine and method for its production
AT519257B1 (en) 2016-11-04 2018-05-15 Avl List Gmbh Internal combustion engine
US10550757B2 (en) * 2017-01-12 2020-02-04 Vianney Rabhi Valve ignition prechamber
DE102018220177B4 (en) 2018-11-23 2020-09-03 Mtu Friedrichshafen Gmbh Pre-chamber arrangement for an internal combustion engine, internal combustion engine with such a pre-chamber arrangement, and method for operating such an internal combustion engine
DE102020110395A1 (en) * 2020-04-16 2021-10-21 Bayerische Motoren Werke Aktiengesellschaft Externally ignited reciprocating internal combustion engine with a prechamber ignition system
US11359537B1 (en) * 2021-06-30 2022-06-14 Saudi Arabian Oil Company Spark ignition engine, pre-chamber, and method for cooling a pre-chamber
JP2023084012A (en) * 2021-12-06 2023-06-16 マツダ株式会社 engine

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