DE102005005851A1 - Carburation and flow guidance improving method for prechamber engine, involves supplying fuel-air mixture to ignition spark section in form of mixture cloud and igniting mixture by ignition spark - Google Patents
Carburation and flow guidance improving method for prechamber engine, involves supplying fuel-air mixture to ignition spark section in form of mixture cloud and igniting mixture by ignition spark Download PDFInfo
- Publication number
- DE102005005851A1 DE102005005851A1 DE102005005851A DE102005005851A DE102005005851A1 DE 102005005851 A1 DE102005005851 A1 DE 102005005851A1 DE 102005005851 A DE102005005851 A DE 102005005851A DE 102005005851 A DE102005005851 A DE 102005005851A DE 102005005851 A1 DE102005005851 A1 DE 102005005851A1
- Authority
- DE
- Germany
- Prior art keywords
- mixture
- chamber
- antechamber
- ignition
- prechamber
- 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.)
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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
-
- 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
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Verbesserung der Gemischbildung und Strömungsführung bei einem Vorkammermotor mit Zündung in der Vorkammer, insbesondere bei einer Vorkammerzündkerze für mager betriebene Motoren. Dabei wird gasförmiger oder flüssiger Kraftstoff oder ein fettes oder mageres Kraftstoff-Luft-Gemisch während des Verdichtungstaktes der Vorkammer über Überströmkanäle oder separate Leitungen zugeführt. In der Vorkammer erfolgt vor einer Funkenzündung zumindest eine Vermischung ausgewählter zugeführter Stoffströme, wobei eine weitgehend homogene Gemischwolke erzeugt wird, die über die gezielte Strömung in Richtung auf die Zündstelle gelenkt wird, wobei sich am Zündort ein in einem weiten Zeitbereich zündfähiges Gemischs ergibt. The The invention relates to a method for improving mixture formation and flow guidance at a pre-chamber engine with ignition in the pre-chamber, in particular in a Vorkammerzündkerze for lean operated engines. This is gaseous or liquid fuel or a rich or lean fuel-air mixture during the compression stroke the antechamber via overflow or supplied separate lines. In the antechamber, at least one mixing takes place before a spark ignition selected supplied Material flows, wherein a largely homogeneous mixture cloud is generated, which over the targeted flow towards the ignition point is steered, being at the ignition a mixture ignitable in a wide range of times.
Vorkammerzündeinrichtungen, insbesondere Vorkammerzündkerzen, sind seit vielen Jahren bekannt (z.B. SAE-Paper 840455). In neuerer Zeit wurden hierzu Lösungen vorgeschlagen, bei denen durch Anreicherung des aus dem Hauptbrennraum über Überströmkanäle zugeführten mageren Gemischs mit Kraftstoff verbesserte Zündungs- und Entflammungseigenschaften erreicht wird.Vorkammerzündeinrichtungen, in particular pre-chamber spark plugs, have been known for many years (e.g., SAE paper 840455). In newer Time became solutions to this proposed in which by enrichment of supplied from the main combustion chamber via transfer channels lean Mixture with fuel improved ignition and ignition characteristics is reached.
In
In
Anlehnung an vorgenannte Lösung
wird in
Nach
Bei den genannten Verfahren wird das Ziel verfolgt, im Elektrodenspalt zum Zündzeitpunkt eine Luftzahl von näherungsweise Lambda=1,0 zu erhalten, da sich bei dieser Luftzahl besonders gute Zündbedingungen ergeben. Über Maßnahmen zur Verbesserung der Gemischbildung wurden aber keine Aussagen getroffen. Damit sich am Zündort in einem möglichst weiten Kurbelwinkelbereich ein solches, sicher zündfähiges Gemischs ergibt, sollte in der Vorkammer vor der Zündung ein möglichst großes und weitgehend homogenisiertes Gemischvolumen erzeugt werden, dass durch eine entsprechend gestaltete Strömung in der Vorkammer während des Kompressionstaktes in den Bereich der Zündstelle bzw. der Zündstellen transportiert wird, wobei das vor dem Kompressionstakt in der Vorkammer befindliche Restgas in Bereiche der Vorkammer abgedrängt werden muss, die deutlich entfernt von der Zündstelle liegen. Das wird erfahrungsgemäß durch die Abstimmung einer oder mehrerer zentraler und radialer, insbesondere auch tangentialer Überströmkanäle in die Vorkammer erreicht wird.at the said method, the goal is pursued in the electrode gap at the ignition point an air ratio of approximately Lambda = 1.0, since this air ratio is particularly good ignition conditions result. about activities but no statements were made to improve the mixture formation. So that at the ignition point in one possible wide crank angle range such a sure ignitable mixture results, should be in the antechamber before the ignition one possible great and largely homogenized mixture volume can be generated that by a correspondingly designed flow in the antechamber during the Compression cycle in the area of the ignition point or the ignition points being transported, taking that before the compression stroke in the antechamber Residual gas are pushed into areas of the antechamber must be located clearly removed from the ignition. This is experienced by the tuning of one or more central and radial, in particular also tangential transfer channels into the antechamber is reached.
Die Aufgabe der Erfindung besteht nach Vorstehendem darin, von den über verschiedene Überströmbohrungen und Zulaufbohrungen zuströmenden Gas- bzw. Kraftstoffströmen mindestens zwei Stoffströme auszuwählen und in kurzer Zeit möglichst vollständig zu vermischen um ein großes und weitgehend homogenisiertes Gemischvolumen mit bester Entflammungseigenschaften zu erzeugen, das nachfolgend mit der Strömung in der Vorkammer zur Zündstelle transportiert wird, wobei ein möglichst großes „Zündfenster" eine sicher Entflammung in allen Betriebsbereichen des Motors sicherstellt.The The object of the invention is according to the above, of the various overflow holes and inlet bores inflowing Gas or fuel flows at least two streams select and in a short time as possible Completely to mix a big one and largely homogenized mixture volume with best flammability properties subsequent to the flow in the prechamber to the ignition point is transported, with the largest possible "ignition" a safe ignition ensures in all operating ranges of the engine.
Diese
Aufgabe wird erfindungsgemäß durch ein
Verfahren gelöst,
bei dem mindestens zwei Gasströme
durch die Anordnung von mindestens zwei Überströmbohrungen bzw. Zulaufbohrungen
so gerichtet werden, dass die Strahlimpulse der in die Kammer strahlenförmig eintretenden
Strahlen:
möglichst
weitestgehend in eine effektive „Mischungsarbeit" umgesetzt werden.This object is achieved according to the invention by a method in which at least two gas streams are directed through the arrangement of at least two overflow bores or inlet bores such that the jet pulses of the rays radiantly entering the chamber occur:
as far as possible be translated into an effective "mixing work".
Zudem wird der Transport der erzeugten Gemischwolke zur Zündstelle durch eine angepasste, insbesondere zylindrische Geometrie der Vorkammer mit insbesondere seitlich angeordneten tangential und/oder radialen Überströmbohrungen bzw. Zulaufbohrungen sicher gestellt.In addition, the transport of the generated mixture cloud to the ignition point by an adapted, in particular cylindrical geometry of the antechamber with particular laterally arranged tangen tial and / or radial overflow or inlet holes ensured.
Einzelheitendetails
Ausführungsbeispiele der Erfindung sind in Zeichnungen dargestellt und werden nachfolgend näher erläutert. Es zeigen:embodiments The invention are illustrated in drawings and are explained in more detail below. It demonstrate:
Da
zudem die Impulse der Stoffströme über die
tangentialen Schusskanäle
(
Zur
Vergrößerung der
der Zündstelle
zuströmenden
Gemischwolke mit besonders zündwilligem Gemisch
werden als eine Variante zwischen dem vorderen Teil der Kammer mit
den tangentialen Schusskanälen
(
Die
Gemischzusammensetzung in der Vorkammer kann nach bekannten Verfahren (
Claims (19)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005005851A DE102005005851A1 (en) | 2005-02-08 | 2005-02-08 | Carburation and flow guidance improving method for prechamber engine, involves supplying fuel-air mixture to ignition spark section in form of mixture cloud and igniting mixture by ignition spark |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005005851A DE102005005851A1 (en) | 2005-02-08 | 2005-02-08 | Carburation and flow guidance improving method for prechamber engine, involves supplying fuel-air mixture to ignition spark section in form of mixture cloud and igniting mixture by ignition spark |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102005005851A1 true DE102005005851A1 (en) | 2006-08-17 |
Family
ID=36745972
Family Applications (1)
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---|---|---|---|
DE102005005851A Withdrawn DE102005005851A1 (en) | 2005-02-08 | 2005-02-08 | Carburation and flow guidance improving method for prechamber engine, involves supplying fuel-air mixture to ignition spark section in form of mixture cloud and igniting mixture by ignition spark |
Country Status (1)
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DE (1) | DE102005005851A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105525981A (en) * | 2014-10-21 | 2016-04-27 | 卡特彼勒能源方案有限公司 | Pre-Combustion Chamber Assembly For Internal Combustion Engines |
DE102017009613A1 (en) | 2017-10-17 | 2018-04-19 | Daimler Ag | Method for operating an internal combustion engine of a motor vehicle, in particular of a motor vehicle |
DE102017011209B3 (en) | 2017-12-05 | 2019-01-17 | Daimler Ag | Prechamber spark plug for a combustion chamber of an internal combustion engine, in particular of a motor vehicle, and internal combustion engine for a motor vehicle |
DE102017009607A1 (en) | 2017-10-17 | 2019-04-18 | Daimler Ag | Gas engine supply and ignition device and method of operating a gas engine supply and ignition device |
WO2020124102A1 (en) * | 2018-12-21 | 2020-06-25 | Innio Jenbacher Gmbh & Co Og | Cylinder head for an internal combustion engine |
DE102020117008A1 (en) | 2020-06-29 | 2021-12-30 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Internal combustion engine for a motor vehicle and prechamber spark plug |
DE102009050313B4 (en) | 2008-10-24 | 2022-06-30 | Altronic, Llc | Method and system for igniting a lean fuel mixture in a main chamber of an internal combustion engine |
US11680511B2 (en) | 2018-12-21 | 2023-06-20 | Innio Jenbacher Gmbh & Co Og | Cylinder head for an internal combustion engine |
-
2005
- 2005-02-08 DE DE102005005851A patent/DE102005005851A1/en not_active Withdrawn
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009050313B4 (en) | 2008-10-24 | 2022-06-30 | Altronic, Llc | Method and system for igniting a lean fuel mixture in a main chamber of an internal combustion engine |
CN105525981A (en) * | 2014-10-21 | 2016-04-27 | 卡特彼勒能源方案有限公司 | Pre-Combustion Chamber Assembly For Internal Combustion Engines |
CN105525981B (en) * | 2014-10-21 | 2020-06-09 | 卡特彼勒能源方案有限公司 | Pre-combustion chamber assembly for internal combustion engine |
DE102017009607A1 (en) | 2017-10-17 | 2019-04-18 | Daimler Ag | Gas engine supply and ignition device and method of operating a gas engine supply and ignition device |
WO2019076581A1 (en) | 2017-10-17 | 2019-04-25 | Daimler Ag | Supply and ignition device for a gas engine, and method for operating a supply and ignition device for a gas engine |
US11352982B2 (en) | 2017-10-17 | 2022-06-07 | Daimler Ag | Feed and ignition device for a gas engine and method for operating a feed and ignition device for a gas engine |
DE102017009613A1 (en) | 2017-10-17 | 2018-04-19 | Daimler Ag | Method for operating an internal combustion engine of a motor vehicle, in particular of a motor vehicle |
WO2019110381A1 (en) | 2017-12-05 | 2019-06-13 | Daimler Ag | Pre-chamber spark plug for the combustion chamber of an internal combustion engine, in particular of a motor vehicle, and internal combustion engine for a motor vehicle |
DE102017011209B3 (en) | 2017-12-05 | 2019-01-17 | Daimler Ag | Prechamber spark plug for a combustion chamber of an internal combustion engine, in particular of a motor vehicle, and internal combustion engine for a motor vehicle |
US11635017B2 (en) | 2017-12-05 | 2023-04-25 | Daimler Ag | Pre-chamber spark plug for a combustion chamber of an internal combustion engine, in particular of a motor vehicle, and an internal combustion engine for a motor vehicle |
WO2020124102A1 (en) * | 2018-12-21 | 2020-06-25 | Innio Jenbacher Gmbh & Co Og | Cylinder head for an internal combustion engine |
US11680511B2 (en) | 2018-12-21 | 2023-06-20 | Innio Jenbacher Gmbh & Co Og | Cylinder head for an internal combustion engine |
US11680513B2 (en) | 2018-12-21 | 2023-06-20 | Innio Jenbacher Gmbh & Co Og | Cylinder head for an internal combustion engine |
DE102020117008A1 (en) | 2020-06-29 | 2021-12-30 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Internal combustion engine for a motor vehicle and prechamber spark plug |
DE102020117008B4 (en) | 2020-06-29 | 2022-05-12 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Internal combustion engine for a motor vehicle and prechamber spark plug |
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Date | Code | Title | Description |
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8122 | Nonbinding interest in granting licences declared | ||
R005 | Application deemed withdrawn due to failure to request examination |
Effective date: 20120209 |