DE2642056A1 - Compression ignition engine with antechamber - has antechamber formed as cylindrical insert pulled into position by fuel injector keeper - Google Patents

Compression ignition engine with antechamber - has antechamber formed as cylindrical insert pulled into position by fuel injector keeper

Info

Publication number
DE2642056A1
DE2642056A1 DE19762642056 DE2642056A DE2642056A1 DE 2642056 A1 DE2642056 A1 DE 2642056A1 DE 19762642056 DE19762642056 DE 19762642056 DE 2642056 A DE2642056 A DE 2642056A DE 2642056 A1 DE2642056 A1 DE 2642056A1
Authority
DE
Germany
Prior art keywords
insert
cylinder head
antechamber
keeper
fuel injector
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Withdrawn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
DE19762642056
Other languages
German (de)
Inventor
Heinrich Bockel
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 DE19762642056 priority Critical patent/DE2642056A1/en
Publication of DE2642056A1 publication Critical patent/DE2642056A1/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Withdrawn legal-status Critical Current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
    • F02B19/14—Engines characterised by precombustion chambers with compression ignition
    • 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
    • F02B19/08—Engines characterised by precombustion chambers the chamber being of air-swirl type
    • 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

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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)

Abstract

The cylinder head is provided with a boring (7) to receive a turbulence chamber insert (6). The insert is cylindrical and provided with a flame channel (5). The insert length is less than that of the cylinder head boring (7) so that a gap (15) is formed between the flame channel facing (14) and the cylinder head gasket (2) when the insert is pulled up as far as the stop (8). The insert is held in position by the fuel injector. The insert is suitably bored and threaded to receive the fuel injector keeper which is provided with a corresponding thread. The injector keeper (9) is formed as a union nut which supports itself on a collar (12) with a seal (12) in the cylinder head. A peg (16) locates the insert in the correct position.

Description

Daimler-Benz Aktiengesel <_s«:haft Daim 1 1 276/4 Daimler-Benz Aktiengesel <_s ": haft Daim 1 1 276/4

Stuttgart-Untertürkheim λ 17.0.γ6Stuttgart-Untertürkheim λ 17.0.γ6

Luftverdichtende Einspritzbrennkraftmaschine mit einer WirbelkammerAir-compressing injection internal combustion engine with a vortex chamber

Die Erfindung bezieht sich auf eine luftverdichtende Einspritzbrennkraftmaschine mit einer Wirbelkammer im Zylinderkopf, die über den Zylinderumfang hinausragend angeordnet ist und die ferner mit einer mit einem Düsenhalter am Zylinderkopf gehaltenen Einspritzdüse und gegebenenfalls mit einer Glühkerze versehen ist.The invention relates to an air-compressing injection internal combustion engine with a swirl chamber in the cylinder head, which is arranged protruding beyond the cylinder circumference and which furthermore provided with an injection nozzle held on the cylinder head with a nozzle holder and optionally with a glow plug is.

Bei einer bekannten Brennkraftmaschine dieser Art (DT-AS 1 526 291) wird der obere Teil der Wirbelkammer vom Zylinderkopf selbst gebildet, während der untere, den Schußkanal aufweisende Teil aus einem besonderen Einsatz besteht, der von unten in den Zylinderkopf eingesetzt ist. Die ebene Stirnfläche des Einsatzes liegt dabei in der Dichtebene des Zylinderkopfes, so daß der über den Zylinderumfang hinausragende Teil des Einsatzes an der Zyiriderkopf dichtung anliegt. Dadurch treten oft Beschädigungen der Zylinderkopfdichtung auf, die durch Wärmedehnungen, pulsierende Drücke und durch ein Kippen des Einsatzes in der kurzen Führung im Zylinderkopf hervorgerufen werden.In a known internal combustion engine of this type (DT-AS 1 526 291) the upper part of the swirl chamber is formed by the cylinder head itself, while the lower part, which has the firing channel consists of a special insert that is inserted into the cylinder head from below. The flat face of the insert lies in the sealing plane of the cylinder head, so that the part of the insert protruding beyond the cylinder circumference on the Zyiriderkopf seal rests. This often causes damage to the cylinder head gasket caused by thermal expansion, pulsating Pressures and caused by tilting the insert in the short guide in the cylinder head.

Der Erfindung liegt die Aufgabe zugrunde, die geschilderten Mangel bei der Ausbildung und Anordnung einer Wirbelkaaner zu vermeiden. Erfindungsgemäß wird die gestellte Aufgabe dadurch gelöst, daß die gesamte Wirbelkammer in einem zylindrischen Einsatz angeordnetThe invention is based on the problem described above to be avoided in the formation and arrangement of a vertebral kaaner. According to the invention the object is achieved in that the entire vortex chamber arranged in a cylindrical insert

009812/0282009812/0282

Daim 11 276/UDaim 11 276 / U

ist, der als Einheit von unten in eine entsprechende Bohrung im Zylinderkopf eingesetzt und durch Schraubmittel gegen einen festen Anschlag nach oben gezogen ist, derart, daß die brennraumseit:.ge Stirnfläche des zylindrischen Einsatzes gegenüber der Dichtfläche des Zylinderkopfes zurückgesetzt ist.is that as a unit from below into a corresponding hole used in the cylinder head and screwed against a fixed stop is pulled up, so that the combustion chamber side: .ge The end face of the cylindrical insert is set back from the sealing surface of the cylinder head.

Durch die Erfindung wird erreicht, daß die Zylinderkopfdichtung nicht mehr durch Wärmedehnungen des Einsatzes oder durch pulsierende Drücke beschädigt wird. Ein Kippen des Einsatzes tritt nicht mehr auf, weil durch die Anordnung der Wirbelkammer insgesamt in dem Einsatz eine sichere Führung des Einsatzes im Zylinderkopf erzielt wird. Darüber hinaus ergeben sich weniger Teile und eine einfachere Bearbeitung.The invention achieves that the cylinder head gasket is no longer damaged by thermal expansion of the insert or by pulsating pressures. A tilting of the insert no longer occurs because the arrangement of the swirl chamber in the insert ensures that the insert is safely guided in the cylinder head will. In addition, there are fewer parts and easier machining.

In vorteilhafter Ausgestaltung des Erfindungsgegenstandes können die Schraubmittel aus dem Düsenhalter der Einspritzdüse bestehen, das somit eine zusätzliche Aufgabe übernimmt.In an advantageous embodiment of the subject matter of the invention can the screw means consist of the nozzle holder of the injection nozzle, which thus takes on an additional task.

In der Zeichnung ist der Erfindungsgegenstand in einem Ausführungsbeispiel anhand eines Schnittes durch eine luftverdichtende Einspritzbrennkraftmaschine dargestellt.In the drawing, the subject matter of the invention is shown in an exemplary embodiment on the basis of a section through an air-compressing injection internal combustion engine shown.

Auf dem Zylinder 1 der gezeigten Brennkraftmaschine ist unter Zwischenschaltung einer Zylinderkopfdichtung 2 der Zylinderkopf befestigt, in dem eine Wirbelkammer h mit Schußkanal 5 über den Zylinderumfang seitlich hinausragend angeordnet ist. Die gesamte Wirbelkammer k liegt in einem zylindrischen Einsatz 6, der von unten her in eine Bohrung 7 im Zylinderkopf 3 eingesetzt 1st und der nach oben gegen einen festen Anschlag 8 durch den Düsenhalter Q für die Einspritzdüse 10 gezogen wird, deren Düsenmündung in der Wirbelkammer h liegt. Der Düsenhalter 9 ist als eine Art Überwurfmutter ausgebildet, die sich unter Zwischenschaltung einer Dichtung 11 mit einem Bund 12 auf dem Zylinderkopf 3 abstützt und die mit Gewinde 13 in ein entsprechendes Gewinde im Einsatz 6 eingreift.On the cylinder 1 of the internal combustion engine shown, the cylinder head is fastened with the interposition of a cylinder head gasket 2, in which a swirl chamber h with a firing channel 5 is arranged protruding laterally beyond the cylinder circumference. The entire vortex chamber k lies in a cylindrical insert 6 which is inserted from below into a bore 7 in the cylinder head 3 and which is pulled upwards against a fixed stop 8 through the nozzle holder Q for the injection nozzle 10, the nozzle opening of which in the vortex chamber h lies. The nozzle holder 9 is designed as a type of union nut which, with the interposition of a seal 11 with a collar 12, is supported on the cylinder head 3 and which engages with a thread 13 in a corresponding thread in the insert 6.

809812/0282 - 3 -809812/0282 - 3 -

Daim T 1Daim T 1

Die Gesamtlänge des Einsatzes 6 ist derart bemessen, daß bei
montiertem Einsatz zwischen dessen Stirnfläche I^ mit der Mündung des SchuQkanales "5 und der Zylinderkopfdichtung 2 ein
kleiner Abstand I1S vorhanden ist. Durch einen Paßstift 16 wird der Einsatz 6 in seiner richtigen Lage fixiert.The total length of the insert 6 is such that at
mounted insert between its end face I ^ with the mouth of the SchuQkanales "5 and the cylinder head gasket 2 a
small distance I 1 S is present. The insert 6 is fixed in its correct position by a dowel pin 16.

Sofern die Anordnung einer Glühkerze erforderlich ist, kann diese etwa gemäß der angedeuteten Linie 17 angeordnet werden.If the arrangement of a glow plug is required, this can be arranged approximately according to the indicated line 17.

Aus Herstellungsgründen kann der Einsatz 6 aus zwei Teilen gefertigt sein, die dann zu einer Einheit verbunden sind.For manufacturing reasons, the insert 6 can be made of two parts which are then connected to form a unit.

Gemäß der Zeichnung liegt die Mittellängsachse durch die Einspritzdüse 10 bzw. durch den Düsenhalter 9 in einem Winkel zur Mittellängsachse durch den Einsatz 6, die wiederum parallel zur Mittellängsachse durch den Zylinder 1 liegt. Die Anordnung kann auch derart getroffen sein, daß die Mittellängsachse durch die Einspritzdüse 10 parallel zur Mittellängsachse durch den Einsatz oder die Mittellängsachse des Einsatzes 6 unter einem Winkel
zur Mittellängsachse durch den Zylinder 1 liegt.According to the drawing, the central longitudinal axis through the injection nozzle 10 or through the nozzle holder 9 is at an angle to the central longitudinal axis through the insert 6, which in turn lies parallel to the central longitudinal axis through the cylinder 1. The arrangement can also be made such that the central longitudinal axis through the injection nozzle 10 is parallel to the central longitudinal axis through the insert or the central longitudinal axis of the insert 6 at an angle
to the central longitudinal axis through the cylinder 1.

809812/0282809812/0282

Claims (2)

-r- -r- Daim Π 276/4Daim Π 276/4 AnsprücheExpectations |1 . Luftverdichtende Einspritzbrennkraftmaschine mit einer Wirbelkammer im Zylinderkopf, die über den Zylinderumfang hinausragend angeordnet ist und die ferner mit einer mit einem Düsenhalter am Zylinderkopf gehaltenen Einspritzdüse und gegebenenfalls mit einer Glühkerze versehen ist, dadurch gekennzeichnet, daß die gesamte Wirbelkammer (U) in einem zylindrischen Einsatz (6) angeordnet ist, der als Einheit von unten in eine entsprechende Bohrung (7) im Zylinderkopf (3) eingesetzt und durch Schraubmittel gegen einen festen Anschlag (8) nach oben gezogen ist, derart, daß die brennraumseitige Stirnfläche (1Ί·) des zylindrischen Einsatzes gegenüber der Dichtfläche des Zylinderkopfes zurückgesetzt ist.| 1. Air-compressing injection internal combustion engine with a swirl chamber in the cylinder head, which is arranged protruding beyond the cylinder circumference and which is furthermore provided with an injection nozzle held by a nozzle holder on the cylinder head and possibly with a glow plug, characterized in that the entire swirl chamber (U) is in a cylindrical insert ( 6) is arranged, which is inserted as a unit from below into a corresponding bore (7) in the cylinder head (3) and is pulled upwards by screwing against a fixed stop (8), so that the combustion chamber-side end face (1Ί ·) of the cylindrical Insert is set back from the sealing surface of the cylinder head. 2. Brennkraftmaschine nach Anspruch. 1, dadurch gekennzeichnet, daß die Schraubmittel aus dem Düsenhalter (9) der Einspritzdüse (io) bestehen.2. Internal combustion engine according to claim. 1, characterized in that that the screw means from the nozzle holder (9) of the injection nozzle (io) exist. 8ubd1 2/02828ubd1 2/0282 ORIGINAL INSPECTEDORIGINAL INSPECTED
DE19762642056 1976-09-18 1976-09-18 Compression ignition engine with antechamber - has antechamber formed as cylindrical insert pulled into position by fuel injector keeper Withdrawn DE2642056A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19762642056 DE2642056A1 (en) 1976-09-18 1976-09-18 Compression ignition engine with antechamber - has antechamber formed as cylindrical insert pulled into position by fuel injector keeper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762642056 DE2642056A1 (en) 1976-09-18 1976-09-18 Compression ignition engine with antechamber - has antechamber formed as cylindrical insert pulled into position by fuel injector keeper

Publications (1)

Publication Number Publication Date
DE2642056A1 true DE2642056A1 (en) 1978-03-23

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ID=5988256

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19762642056 Withdrawn DE2642056A1 (en) 1976-09-18 1976-09-18 Compression ignition engine with antechamber - has antechamber formed as cylindrical insert pulled into position by fuel injector keeper

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DE (1) DE2642056A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2587756A1 (en) * 1985-09-20 1987-03-27 Inst Francais Du Petrole Method and device for thermally insulating a member with respect to the combustion gases contained in a cylinder of an internal combustion engine by means of thin layers of gas and layers of insulating material
FR2618848A1 (en) * 1987-07-30 1989-02-03 Renault Insulated prechamber for a diesel engine
FR2666849A2 (en) * 1987-07-30 1992-03-20 Renault Insulated prechamber for diesel engine
EP0636773A1 (en) * 1993-07-26 1995-02-01 Yamaha Hatsudoki Kabushiki Kaisha Cylinder head construction for an internal combustion engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2587756A1 (en) * 1985-09-20 1987-03-27 Inst Francais Du Petrole Method and device for thermally insulating a member with respect to the combustion gases contained in a cylinder of an internal combustion engine by means of thin layers of gas and layers of insulating material
FR2618848A1 (en) * 1987-07-30 1989-02-03 Renault Insulated prechamber for a diesel engine
FR2666849A2 (en) * 1987-07-30 1992-03-20 Renault Insulated prechamber for diesel engine
EP0636773A1 (en) * 1993-07-26 1995-02-01 Yamaha Hatsudoki Kabushiki Kaisha Cylinder head construction for an internal combustion engine

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