DE898093C - Pre-chamber diesel engine - Google Patents

Pre-chamber diesel engine

Info

Publication number
DE898093C
DE898093C DED1727D DED0001727D DE898093C DE 898093 C DE898093 C DE 898093C DE D1727 D DED1727 D DE D1727D DE D0001727 D DED0001727 D DE D0001727D DE 898093 C DE898093 C DE 898093C
Authority
DE
Germany
Prior art keywords
antechamber
diesel engine
combustion chamber
main combustion
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.)
Expired
Application number
DED1727D
Other languages
German (de)
Inventor
Werner Von Dipl-I Mallinckrodt
Hans Dipl-Ing Scherenberg
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.)
Daimler Benz AG
Original Assignee
Daimler Benz 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 Daimler Benz AG filed Critical Daimler Benz AG
Priority to DED1727D priority Critical patent/DE898093C/en
Application granted granted Critical
Publication of DE898093C publication Critical patent/DE898093C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B19/00Engines characterised by precombustion chambers
    • F02B19/14Engines characterised by precombustion chambers with compression ignition
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

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)

Description

Es ist bei Vorkammer-Einspritzbrennkraftmaschinen bekannt, im Kolbenboden einen der Vorkammeröffnmng gegenüberliegenden, gegebenenfalls mit dem Kolben verschraubten Einsatz vorzusehen. Dieser Einsatz muß aus einem besonders hochwertigen Baustoff bestehen, da er betriebsmäßig von dem aus der Vorkammer ausblasenden Brennstoff-Luft-Gemisch getroffen wird. Dieses Gemisch wird an dem Einsatz umgelenkt und auf den über dem Arbeitskolben liegenden Brennraum verteilt.It is known in prechamber injection internal combustion engines, in the piston crown one opposite the antechamber opening, possibly screwed to the piston Use to be provided. This insert must be made from a particularly high-quality building material exist because it is operationally dependent on the fuel-air mixture blown out of the antechamber is hit. This mixture is deflected on the insert and on the above Distributed working piston lying combustion chamber.

Gegenstand eines älteren Rechtes und nicht zum Stande der Technik gehörig ist eine Vorkammerdieselmaschine, bei der der gesamte Brennstoff in eine mit dem Hauptbrennraum durch einen Kanal verbundene Vorkammer eingespritzt wird, in welcher ein mit einem Kernstück, versehenes Einsatzstück derart befestigt ist, daß der Vorkammerinhalt durch einen .düsenartig sich zum Austritt verjüngenden Ringkanal ohne scharfe Umlenkungen unmittelbar auf eine Prall- oder Ablenlcspitze des Kolbens auftrifft, durch welche er gleichmäßig über den Hauptbrennraum verteilt wird.Subject of an earlier law and not the state of the art What is needed is a pre-chamber diesel engine with all the fuel in one an antechamber connected to the main combustion chamber is injected through a duct, in which an insert piece provided with a core piece is fastened in such a way that that the antechamber contents through an annular channel tapering like a nozzle towards the outlet without sharp deflections directly onto a baffle or deflecting tip of the piston occurs, through which it is evenly distributed over the main combustion chamber.

Gemäß der Erfindung wird bei einer solchen Vorkammerdieselmaschine die Prall- oder Ablenkspitze durch einen :der Überströmöffnung sein abgerundetes Stirnende zukehrenden, aus korrosionsfestem Stahl oder einer siliziumhaltigen Kupfer-Nickel-Legierung bestehenden -Bolzen .gebildet.According to the invention, in such a pre-chamber diesel engine the baffle or deflection tip through one: the overflow opening is rounded Front facing, made of corrosion-resistant steel or a silicon-containing copper-nickel alloy existing bolts .formed.

Infolge dieser Anordnung wird der aus der Vorkammer ausblasende Vorkammerinhalt an zwei Wärmespeicherkernen, nämlich zuerst an dem Kern in der Vorkammer-Überströmöffnung und alsdann an dein durch den Bolzen gebildeten Speicherkern vorbeigeführt, bevor er in den Hauptbrennra@um bzw. in eine etwa vorhandene Kolbenbodenmulde übertritt. Dadurch erfährt der eingespritzte, flüssige Brennstoff eine besonders gute Auflockerung, was eine rauchlose Verbrennung begünstigt.As a result of this arrangement, the antechamber contents blown out of the antechamber on two heat storage cores, namely first on the core in the antechamber overflow opening and then passed your storage core formed by the bolt before it passes into the main combustion chamber or into any existing piston crown. As a result, the injected, liquid fuel experiences particularly good loosening, which favors smokeless combustion.

In :der Zeichnung ist eine Vorkammer.dieselmaschine mit den Merkmalen gemäß der Erfindung in einem dargestellt, und zwar zeigt die Abbildung einen Längsschnitt durch die Vorkammer und den oberen Teil des Zylinders einer Brennkraftmaschine.In: the drawing is a pre-chamber diesel engine with the characteristics according to the invention shown in one, namely the figure shows a longitudinal section through the prechamber and the upper part of the cylinder of an internal combustion engine.

In dem Kopf eines Zylinders i ist zwischen den aus der Zeichnung nicht ersichtlichen Ein- und Auslaßventilen eine zentrale Vorkammer 2 angeordnet. Den Vorkammerraum 2 schließt ein Einsatzstück 3 ein, welches an seinem dem Brennraum 4 zugekehrt liegenden Ende eine trichterförmige Überströmöffnung 5 aufweist. Zwischen der Überströmöffnung 5 und dem Vorkammerraum 2 ist ein Wärmespeicherkern 6 angeordnet, der gegen .die überströmöffnung 5 in eine Spitze 6a ausläuft. In Höhe des Wärmespeicherkernes ist ein Kranz von Längsbohrungen 7 angeordnet, welche .den Vorkammerraum 2 mit der trichterförmigen Überströmöffnung 5 verbinden. Die Brennstoffeinspritzdüse 8 liegt auf der gleichen Achse der überströmöffnung 5 gerade gegenüber.In the head of a cylinder i is not between those shown in the drawing apparent inlet and outlet valves a central pre-chamber 2 is arranged. The Antechamber space 2 includes an insert piece 3, which at its the combustion chamber 4 facing the end has a funnel-shaped overflow opening 5. Between a heat storage core 6 is arranged in the overflow opening 5 and the antechamber space 2, which runs out against .die overflow opening 5 in a tip 6a. At the level of the heat storage core a ring of longitudinal bores 7 is arranged, which .den antechamber space 2 with the Connect funnel-shaped overflow opening 5. The fuel injector 8 is located on the same axis of the overflow opening 5 just opposite.

Der Arbeitszylinder isst mit einer Laufbüchse 9 versehen, in welcher der Kolben i.o gleitet. Dieser weist einen mittleren, den Kolbenboden durchsetzenden, durchgehenden Bolzen i i auf. Dieser Bolzen ist mittels Gewinde in eine Kolbenbodenbohrung -eingeschraubt, gleichzeitig eingeschrumpft und an der Unterseite des Kolbenbodens verstemmt. Der Bolzen besteht aus einem korrosionsfesten Stahl oder einer siliziumhaltigen Kupfer-Nickel-Legierung. Weiterhin ist der Kolbenboden mit einer flachen Ringmulde 12 versehen, deren innerer Rand unmittelbar an .den Rand des pilzförmig abgerundeten Einsatzbolzens anschließt, derart, daß sich eine muldenartige Kolbenbodenfläche mit einer mittleren Erhebung ergibt.The working cylinder is provided with a liner 9 in which the piston slides OK. This has a central, the piston crown penetrating, through bolt i i. This bolt is threaded into a piston crown bore - screwed in, shrunk in at the same time and on the underside of the piston crown caulked. The bolt consists of a corrosion-resistant steel or a silicon-containing one Copper-nickel alloy. Furthermore, the piston crown has a flat annular bowl 12 provided, the inner edge of which is immediately on .den the edge of the mushroom-shaped rounded Insert bolt connects in such a way that there is a trough-like piston crown surface with a medium elevation results.

Claims (1)

PATENTANSPRUCH: Vorkammerdieselmaschine, bei welcher der gesamte Brennstoff in eine mit dem Hauptbrennraum durch einen Kanal verbundene Vorkammer eingespritzt wird, in welcher ein mit einem Kernstück versehenes Einsatzstück derart befestigt ist, daß zier Vorkammerinhalt durch einen düsenartig sich zum Austritt verjüngenden Ringkanal ohne scharfe Umlenkungen unmittelbar auf eine Prall- oder Ablenkspitze :des Kolbens. auftrifft, durch welche er gleichmäßig über den vorzugsweise ringmuldenartig ausgebildeten Häuptbrennraum verteilt wird, dadurch gekennzeichnet, daß die Prall-oder Ablenkspitze .durch einen der Überströmöffnung sein abgerundetes Stirnende zukehrenden, aus korrosionsfestem Stahl oder einer siliziumhaltigen Kupfer-Nickel-Legierung bestehenden Bolzen gebildet wird. Angezogene Druckschriften: Deutsche Patentschriften Nr. 498 699, 486 963, 568 9.6o, 624 529, 7o6 134; dänische Patentschrift Nr. 51 542.PATENT CLAIM: Pre-chamber diesel engine in which the entire fuel injected into an antechamber connected to the main combustion chamber by a duct in which a core piece provided with an insert piece is so attached is that ornamental antechamber contents tapering through a nozzle-like to the outlet Annular channel without sharp deflections directly onto an impact or deflection tip : of the piston. hits, through which it is evenly over the preferably annular trough-like trained main combustion chamber is distributed, characterized in that the impact or Deflection tip .through one of the overflow opening its rounded end facing, made of corrosion-resistant steel or a silicon-containing copper-nickel alloy Bolt is formed. Referred publications: German Patent Specifications No. 498 699, 486 963, 568 9.6o, 624 529, 7o6 134; Danish patent specification No. 51 542.
DED1727D 1938-02-13 1938-02-13 Pre-chamber diesel engine Expired DE898093C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED1727D DE898093C (en) 1938-02-13 1938-02-13 Pre-chamber diesel engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED1727D DE898093C (en) 1938-02-13 1938-02-13 Pre-chamber diesel engine

Publications (1)

Publication Number Publication Date
DE898093C true DE898093C (en) 1953-11-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DED1727D Expired DE898093C (en) 1938-02-13 1938-02-13 Pre-chamber diesel engine

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DE (1) DE898093C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111117A (en) * 1961-11-06 1963-11-19 Steyr Daimler Puch Ag Air-compressing, self-igniting, pre-combustion chamber injection type, internal-combustion engine
DE1292931B (en) * 1961-12-20 1969-04-17 Caterpillar Tractor Co Air-compressing internal combustion piston engine with fuel injection

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE486963C (en) * 1923-07-11 1929-11-28 Custav Mees Internal combustion engine with a combustion chamber and a gasification bowl attached to the piston and acting like a displacer
DE498699C (en) * 1930-05-26 Fried Deckel Pistons for internal combustion engines with self-ignition
DE568960C (en) * 1929-08-11 1933-01-26 Siemens & Halske Akt Ges Fuel nozzle
DE624529C (en) * 1933-11-09 1936-01-23 Daimler Benz Akt Ges Fuel injection device for internal combustion engines
DE706134C (en) * 1936-11-05 1941-05-19 Daimler Benz Akt Ges Pre-chamber diesel engine according to patent 608479, in which the entire fuel is injected into the pre-chamber

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE498699C (en) * 1930-05-26 Fried Deckel Pistons for internal combustion engines with self-ignition
DE486963C (en) * 1923-07-11 1929-11-28 Custav Mees Internal combustion engine with a combustion chamber and a gasification bowl attached to the piston and acting like a displacer
DE568960C (en) * 1929-08-11 1933-01-26 Siemens & Halske Akt Ges Fuel nozzle
DE624529C (en) * 1933-11-09 1936-01-23 Daimler Benz Akt Ges Fuel injection device for internal combustion engines
DE706134C (en) * 1936-11-05 1941-05-19 Daimler Benz Akt Ges Pre-chamber diesel engine according to patent 608479, in which the entire fuel is injected into the pre-chamber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111117A (en) * 1961-11-06 1963-11-19 Steyr Daimler Puch Ag Air-compressing, self-igniting, pre-combustion chamber injection type, internal-combustion engine
DE1292931B (en) * 1961-12-20 1969-04-17 Caterpillar Tractor Co Air-compressing internal combustion piston engine with fuel injection

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