DE556679C - Pre-chamber diesel engine with a cooled pre-chamber located in the cylinder cover - Google Patents

Pre-chamber diesel engine with a cooled pre-chamber located in the cylinder cover

Info

Publication number
DE556679C
DE556679C DEL74035D DEL0074035D DE556679C DE 556679 C DE556679 C DE 556679C DE L74035 D DEL74035 D DE L74035D DE L0074035 D DEL0074035 D DE L0074035D DE 556679 C DE556679 C DE 556679C
Authority
DE
Germany
Prior art keywords
chamber
cylinder
antechamber
diesel engine
cooled
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
DEL74035D
Other languages
German (de)
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.)
Alstom Transport Deutschland GmbH
Original Assignee
Linke Hofmann Busch GmbH
Publication date
Priority to DEL74035D priority Critical patent/DE556679C/en
Application granted granted Critical
Publication of DE556679C publication Critical patent/DE556679C/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
    • F02B19/08Engines characterised by precombustion chambers the chamber being of air-swirl type
    • 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

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  • 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

Vorkammerdieselmotor mit einer im Zylinderdeckel liegenden gekühlten Vorkammer Die Erfindung bezieht sich auf eine Vorkammerdieselmaschine mit einer im Zylinderdeckel liegenden, gekühlten Vorkammer, die mit dem Zylinderraum durch einen Kanal in unmittelbarer Verbindung steht und den größten Teil der Verbrennungsluft aufnimmt und in die am Ende des Verdichtungshubes der Brennstoff eingespritzt wird.Pre-chamber diesel engine with a cooled one located in the cylinder cover Pre-chamber The invention relates to a pre-chamber diesel engine with a The cooled prechamber located in the cylinder cover, which goes through with the cylinder chamber a duct is in direct connection and most of the combustion air receives and into which the fuel is injected at the end of the compression stroke.

Um bei derartigen Maschinen eine gute Verbrennung zu erzielen, -ist man bereits dazuübergegangen, den vom Zylinderraum kommenden Kanal tangential in die zweckmäßig hohlkugelförmig ausgebildete Vorkammer einmünden zu lassen, so daß die vom Zylinder her kommende Luft in der Vorkammer in eine kreisende Bewegung versetzt wird und sich gut mit dem eingespritzten Brennstoff vermischen kann. In Fortbildung dieser Bestrebungen, eine planmäßige Mischung des Brennstoffes mit der Luft zu erreichen, wird gemäß der Erfindung vorgeschlagen, den vom Zylinder kommenden, tangential in die Vorkammer einmündenden Kanal außerdem zur Vorkammer hin konisch zu verengen. Diese Ausbildung der Verbindung zwischen Zylinderraum und Vorkammer bringt den Vorteil mit sich, daß die Luft in genügendem Abstand vom Luftkern der Umwälzkammer in diese vom Zylinder her einströmt. Die konische Form des Verbindungskanals ist außerdem strömungstechnisch die bestgeeignete, weil mit möglichst geringem Druckgefälle zwischen Zylinder und Vorkammer eine hohe Eintrittsgeschwindigkeit am Kammerumfang erzielt werden soll. Je kleiner dieses Druckgefälle ist, um so größer ist die Sicherheit des Ingangsetzens der kalten Maschine ohne Vorheizung der Kammer.In order to achieve good combustion in such machines, -is one has already gone over to the channel coming from the cylinder chamber tangentially in to let the expediently hollow spherical antechamber open out, so that the air coming from the cylinder is set in a circular motion in the antechamber and can mix well with the injected fuel. In training these efforts to achieve a planned mixture of the fuel with the air, is proposed according to the invention, coming from the cylinder, tangentially in the channel opening into the antechamber also conically constricts towards the antechamber. This formation of the connection between the cylinder space and antechamber has the advantage with it that the air at a sufficient distance from the air core of the circulation chamber in this flows in from the cylinder. The conical shape of the connecting channel is also In terms of flow technology, the most suitable, because with the lowest possible pressure gradient between Cylinder and antechamber achieved a high entry speed at the chamber circumference shall be. The smaller this pressure gradient, the greater the safety starting the cold machine without preheating the chamber.

Die konische Verengung des Verbindungskanals vom Zylinderraum zu einer Vorkammer hin ist an sich bereits bekannt. Bei diesen Brennkraftmaschinen ist jedoch keine kreisende Bewegung der Luft in der Vorkammer vorhanden, sondern es handelt sich lediglich darum, zu erreichen, daß das Verbrennungsgemisch mit großer Geschwindigkeit aus der Vorkammer in den Zylinderraum eintritt. Die Erfindung besteht somit in der tangentialeh und gleichzeitig konischen Ausbildung des vom Zylinderraum in die Vorkammer einmündenden Kanals.The conical narrowing of the connecting channel from the cylinder space to one The antechamber is already known per se. In these internal combustion engines, however, is there is no circular movement of the air in the antechamber, but it acts is simply a matter of getting the combustion mixture to run at great speed enters the cylinder space from the antechamber. The invention thus consists in tangential and at the same time conical design of the cylinder space in the antechamber emptying canal.

Auf der Zeichnung ist die Erfindung beispielsweise dargestellt, und zwar zeigt Abb. i den oberen Teil eines Dieselmotors im Längsschnitt, Abb.2 einen Querschnitt nach der Linie B-C-D der Abb. r .In the drawing, the invention is shown, for example, and although Fig. i shows the upper part of a diesel engine in longitudinal section, Fig. 2 shows a Cross-section along the line B-C-D in Fig. R.

Mit i ist der Zylinder und mit 2 der Kolben der Dieselmaschine bezeichnet, der einen flachen Boden 3 hat. Im Deckel 4 ist die kugelförmig ausgebildete Vorkammer 7 angeordnet, sie steht mit dem Zylinderraum durch einen Kanal 5 in Verbindung, der tangential in die Vorkammer 7 einmündet und außerdem vom Zylinder her in seinem Querschnitt allmählich sich verengt. In dem Teil 6 des Deckels 4 sitzt die Brennstoff einspritzvorrichtung 8 mit dem Einspritzventil 9. io und ii bezeichnen das Einlaß- bzw. das Auslaßventil.With i is the cylinder and with 2 the piston of the diesel engine, which has a flat bottom 3. In the cover 4 is the spherical prechamber 7 arranged, it is in communication with the cylinder chamber through a channel 5, which opens tangentially into the prechamber 7 and also from the cylinder in his Cross-section gradually narrows. In the part 6 of the cover 4, the fuel sits injection device 8 with the injection valve 9.io and ii denote the inlet or the exhaust valve.

In Abb. i ist durch eingezeichnete Pfeile der Strömungsverlauf der Luft in der Vorkammer angedeutet, woraus zu erkennen ist, daß eine planmäßige Mischung der Luft mit den aus den Düsen 9 in die Kammer 7 eingespritzten Brennstoffstrahlen erfolgt.In Fig. I, the flow course is indicated by the arrows drawn Air in the antechamber indicated, from which it can be seen that a planned mixture the air with the fuel jets injected from the nozzles 9 into the chamber 7 he follows.

Claims (1)

PATENTANSPRUCFI: Vorkammerdieselmaschine mit einer im Zylinderdeckel liegenden, gekühlten Vorkammer, die mit dem Zylinderraum durch einen Kanal in unmittelbarer Verbindung steht und den größten Teil der Verbrennungsluft aufnimmt und in die am Ende des Verdichtungshubes der Brennstoff eingespritzt wird, dadurch gekennzeichnet, daß der die Vorkammer (7) mit dein Arbeitszylinder verbindende Kanal (5) vom Zylinder her in die Vorkammer in bekannter Weise tangential einmündet und gleichzeitig zu der Vorkammer (7) hin in seinem Querschnitt verengt ist.PATENT APPLICATION: Pre-chamber diesel engine with one in the cylinder cover lying, cooled antechamber, which is in direct contact with the cylinder space through a channel Connection and absorbs most of the combustion air and into the am At the end of the compression stroke the fuel is injected, characterized in that that the antechamber (7) with your working cylinder connecting channel (5) from the cylinder opens tangentially into the antechamber in a known manner and closes at the same time the prechamber (7) is narrowed in its cross section.
DEL74035D Pre-chamber diesel engine with a cooled pre-chamber located in the cylinder cover Expired DE556679C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL74035D DE556679C (en) Pre-chamber diesel engine with a cooled pre-chamber located in the cylinder cover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL74035D DE556679C (en) Pre-chamber diesel engine with a cooled pre-chamber located in the cylinder cover

Publications (1)

Publication Number Publication Date
DE556679C true DE556679C (en) 1932-08-12

Family

ID=7283368

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL74035D Expired DE556679C (en) Pre-chamber diesel engine with a cooled pre-chamber located in the cylinder cover

Country Status (1)

Country Link
DE (1) DE556679C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE873328C (en) * 1937-10-02 1953-04-13 Gueldner Motoren Werke Diesel engine
DE971928C (en) * 1937-05-23 1959-04-16 Max Georg Fiedler Working method and injection device for diesel engines operated with overload
DE976748C (en) * 1941-01-19 1964-04-09 Willy Lehmann Air-compressing internal combustion engine with compression ignition and a cooled disk-shaped rolling chamber

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971928C (en) * 1937-05-23 1959-04-16 Max Georg Fiedler Working method and injection device for diesel engines operated with overload
DE873328C (en) * 1937-10-02 1953-04-13 Gueldner Motoren Werke Diesel engine
DE976748C (en) * 1941-01-19 1964-04-09 Willy Lehmann Air-compressing internal combustion engine with compression ignition and a cooled disk-shaped rolling chamber

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