EP1998024B1 - Combustion engine with cylinder head and auxiliary generator and method for manufacturing such a combustion engine - Google Patents

Combustion engine with cylinder head and auxiliary generator and method for manufacturing such a combustion engine Download PDF

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Publication number
EP1998024B1
EP1998024B1 EP08006563.4A EP08006563A EP1998024B1 EP 1998024 B1 EP1998024 B1 EP 1998024B1 EP 08006563 A EP08006563 A EP 08006563A EP 1998024 B1 EP1998024 B1 EP 1998024B1
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EP
European Patent Office
Prior art keywords
combustion engine
cylinder head
internal combustion
pump
end plate
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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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Application number
EP08006563.4A
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German (de)
French (fr)
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EP1998024A2 (en
EP1998024A3 (en
Inventor
Matthias Krause
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
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Bayerische Motoren Werke AG
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Publication of EP1998024A2 publication Critical patent/EP1998024A2/en
Publication of EP1998024A3 publication Critical patent/EP1998024A3/en
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Publication of EP1998024B1 publication Critical patent/EP1998024B1/en
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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
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus

Definitions

  • the invention relates to an internal combustion engine comprising a cylinder head with bearing lanes for the storage of camshafts and at least one associated with the cylinder head accessory. Furthermore, the invention relates to a method for producing such an internal combustion engine.
  • a drive device for a liquid pump wherein arranged in a cylinder head, a rotating part of the liquid pump coaxial with a camshaft and rotatably connected to it.
  • the cylinder head has an outer wall which is separate from the pump, with the result that this arrangement has an additional element.
  • the object of the invention is therefore to develop an aforementioned internal combustion engine so that additional joints are avoided, a reliable and highly accurate assignment of camshafts and at least one accessory is guaranteed and a simplified assembly and a component reduction can be achieved.
  • a structurally separate bearing plate is provided, which also fulfills a flange function for the at least one accessory and with a method having the features of claim 6, in which Cylinder head and the bearing plate first processed separately and then joined together.
  • Particularly preferred embodiments and further developments of the invention are the subject of the dependent claims. It is particularly advantageous if the flange-forming end shield and a housing of the auxiliary unit are integrally formed integrally. Alternatively, the flange-forming end shield and a housing of the auxiliary unit can be non-positively and / or positively connected with each other.
  • the at least one accessory is a pump driven by a camshaft.
  • a particularly preferred embodiment of the method according to the invention is characterized in that the separate processing of the bearing plate comprises the production of an assembly bearing plate / accessory.
  • a cylinder head 100 of an internal combustion engine not shown here has two bearing lanes 102, 104 for supporting an intake and an exhaust camshaft.
  • a structurally separate bearing plate 106 is connected to the cylinder head 100.
  • the bearing plate 106 is screwed to the cylinder head 100, indicated in the drawing by bores 103.
  • the bearing plate 106 has two openings for further storage of the camshafts, wherein in the illustration only one opening 108 is visible, the other opening is from the housing 112 of a pump 110 hidden.
  • a pump 110 Connected to the bearing plate 106 is the housing 112 of a pump 110.
  • This may be a delivery pump, which may be designed, for example, as a gear pump, a high-pressure pump, which may be in the form of a piston pump or a vacuum pump.
  • the pump may be part of a fuel supply system of the internal combustion engine or provide a vacuum required for braking force assistance.
  • the Lagergasse 102 associated pump 110 is shown in the figure, of course, according to the invention, a further, the Lagergasse 104 associated pump can be provided.
  • the housing 112 of the pump 110 and the bearing plate 106 are integrally formed cohesively, the bearing plate 106 also forms a mounting flange of the pump 110.
  • the bearing plate 106 and the housing 112 of the pump 110 are non-positively and / or positively connected to each other, for example, by the housing 112 is placed on the bearing plate 106 and bolted from the inside to the bearing plate 106.
  • the bearing plate 106 and the housing 112 of the pump 110 can be glued together, welded, soldered or pressed. If necessary, provide a seal between bearing plate 106 and accessory 110.
  • the bearing plate 106 forms a mounting flange of the pump 110, a always required in known constructions separate pump flange is superfluous. In this way, space and material can be saved, the assembly is simplified. In addition, the number of components is reduced and the seal between the cylinder head 100 and bearing plate / pump 106/110 must not survive the stresses of chemical, thermal and / or mechanical nature of further processing of the cylinder head 100 and / or the bearing plate 106 and therefore can be targeted be adapted to the requirements of the tightness. The sealing of the cylinder head 100 can be made more robust.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Description

Die Erfindung betrifft eine Brennkraftmaschine umfassend einen Zylinderkopf mit Lagergassen zur Lagerung von Nockenwellen sowie wenigstens ein dem Zylinderkopf zugeordnetes Nebenaggregat. Ferner betrifft die Erfindung ein Verfahren zur Herstellung einer derartigen Brennkraftmaschine.The invention relates to an internal combustion engine comprising a cylinder head with bearing lanes for the storage of camshafts and at least one associated with the cylinder head accessory. Furthermore, the invention relates to a method for producing such an internal combustion engine.

Aus der DE 196 24 240 A1 ist eine Brennkraftmaschine mit stirnseitig am Zylinderkopf, in Verlängerung der Nockenwellen angeordneten Pumpen bekannt. Die Pumpen weisen jeweils einen Flansch auf, mit dem sie am Zylinderkopf befestigt sind. So ist eine zusätzliche Trennfuge gebildet, welche gesondert abgedichtet werden muss. Außerdem ist es problematisch, die Lagergassen zur Aufnahme der Nockenwellen und die Pumpenaufnahme so genau zu bearbeiten, dass die für die Pumpe geforderten Schnittstellenvorgaben erreicht werden. Aus diesem Grunde sind gemäß der DE 196 24 240 A1 Gleitstückkupplungen vorgesehen.From the DE 196 24 240 A1 is an internal combustion engine with the front side of the cylinder head, arranged in extension of the camshaft pumps known. The pumps each have a flange with which they are attached to the cylinder head. Thus, an additional parting line is formed, which must be sealed separately. In addition, it is problematic to edit the bearing lanes for receiving the camshaft and the pump intake so accurate that the required for the pump interface specifications are achieved. For this reason, according to the DE 196 24 240 A1 Slider clutches provided.

Aus der DE 42 42 871 ist eine Antriebsvorrichtung für eine Flüssigkeitspumpe bekannt, wobei in einem Zylinderkopfe ein rotierendes Teil der Flüssigkeitspumpe koaxial zu einer Nockenwelle angeordnet und drehfest mit ihr verbunden ist. Der Zylinderkopfe weist eine Außenwand auf, die von der Pumpe getrennt ist,was zur Folge hat, dass diese Anordnung ein zusätzliches Element aufweist.From the DE 42 42 871 a drive device for a liquid pump is known, wherein arranged in a cylinder head, a rotating part of the liquid pump coaxial with a camshaft and rotatably connected to it. The cylinder head has an outer wall which is separate from the pump, with the result that this arrangement has an additional element.

Aufgabe der Erfindung ist es daher, eine eingangs genannte Brennkraftmaschine so weiterzubilden, dass zusätzliche Trennfugen vermieden werden, eine prozesssichere und hochgenaue Zuordnung von Nockenwellen und wenigstens einem Nebenaggregat gewährleistet ist und eine vereinfachte Montage sowie eine Bauteilreduktion erreicht werden können.The object of the invention is therefore to develop an aforementioned internal combustion engine so that additional joints are avoided, a reliable and highly accurate assignment of camshafts and at least one accessory is guaranteed and a simplified assembly and a component reduction can be achieved.

Die Lösung der Aufgabe erfolgt mit einer Brennkraftmaschine mit den Merkmalen des Anspruchs 1, indem stirnseitig des Zylinderkopfes ein baulich gesondertes Lagerschild vorgesehen ist, das für das wenigstens eine Nebenaggregat zugleich eine Flanschfunktion erfüllt sowie mit einem Verfahren mit den Merkmalen des Anspruchs 6, in dem der Zylinderkopf und das Lagerschild zunächst gesondert bearbeitet und dann zusammengefügt werden. Besonders zu bevorzugende Ausführungsbeispiele und Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche. Von besonderem Vorteil ist es, wenn das flanschbildende Lagerschild und ein Gehäuse des Nebenaggregats stoffschlüssig einteilig ausgestaltet sind. Alternativ können das flanschbildende Lagerschild und ein Gehäuse des Nebenaggregates kraft- und/oder formschlüssig miteinander verbunden sein.The object is achieved with an internal combustion engine having the features of claim 1 by the end face of the cylinder head a structurally separate bearing plate is provided, which also fulfills a flange function for the at least one accessory and with a method having the features of claim 6, in which Cylinder head and the bearing plate first processed separately and then joined together. Particularly preferred embodiments and further developments of the invention are the subject of the dependent claims. It is particularly advantageous if the flange-forming end shield and a housing of the auxiliary unit are integrally formed integrally. Alternatively, the flange-forming end shield and a housing of the auxiliary unit can be non-positively and / or positively connected with each other.

Vorzugsweise ist das wenigstens eine Nebenaggregat eine von einer Nockenwelle angetriebene Pumpe.Preferably, the at least one accessory is a pump driven by a camshaft.

Eine besonders bevorzugte Weiterbildung des erfindungsgemäßen Verfahrens zeichnet sich dadurch aus, dass die gesonderte Bearbeitung des Lagerschilds die Herstellung einer Baugruppe Lagerschild/Nebenaggregat umfasst.A particularly preferred embodiment of the method according to the invention is characterized in that the separate processing of the bearing plate comprises the production of an assembly bearing plate / accessory.

Nachfolgend wird unter Bezugnahme auf die einzige Figur, welche schematisch und beispielhaft einen Zylinderkopf mit Lagerschild-Pumpeneinheit zeigt, ein besonders zu bevorzugendes Ausführungsbeispiel der Erfindung näher erläutert.Hereinafter, with reference to the single figure, which shows schematically and by way of example a cylinder head with bearing plate pump unit, a particularly preferable embodiment of the invention will be explained in more detail.

Ein Zylinderkopf 100 einer hier nicht näher dargestellten Brennkraftmaschine weist zwei Lagergassen 102, 104 zur Lagerung einer Einlass- und einer Auslassnockenwelle auf. An der Stirnseite 101 des Zylinderkopfes 100 ist mit dem Zylinderkopf 100 ein baulich gesondertes Lagerschild 106 verbunden.A cylinder head 100 of an internal combustion engine not shown here has two bearing lanes 102, 104 for supporting an intake and an exhaust camshaft. On the front side 101 of the cylinder head 100, a structurally separate bearing plate 106 is connected to the cylinder head 100.

Vorzugsweise ist das Lagerschild 106 mit dem Zylinderkopf 100 verschraubt, in der Zeichnung angedeutet durch Bohrungen 103. Das Lagerschild 106 weist zwei Öffnungen zur weiteren Lagerung der Nockenwellen auf, wobei in der Darstellung nur eine Öffnung 108 sichtbar ist, die andere Öffnung ist von dem Gehäuse 112 einer Pumpe 110 verdeckt.Preferably, the bearing plate 106 is screwed to the cylinder head 100, indicated in the drawing by bores 103. The bearing plate 106 has two openings for further storage of the camshafts, wherein in the illustration only one opening 108 is visible, the other opening is from the housing 112 of a pump 110 hidden.

Mit dem Lagerschild 106 verbunden ist das Gehäuse 112 einer Pumpe 110. Dabei kann es sich um eine Förderpumpe, die beispielsweise als Zahnradpumpe ausgeführt sein kann, eine Hochdruckpumpe, die als Kolbenpumpe ausgebildet sein kann oder eine Unterdruckpumpe handeln. Die Pumpe kann Bestandteil eines Kraftstoffversorgungssystems der Brennkraftmaschine sein oder einen zur Bremskraftunterstützung erforderlichen Unterdruck bereitstellen. Auch wenn vorliegend in der Figur nur eine einzige, der Lagergasse 102 zugeordnete Pumpe 110 dargestellt ist, kann erfindungsgemäß selbstverständlich auch eine weitere, der Lagergasse 104 zugeordnete Pumpe vorgesehen sein.Connected to the bearing plate 106 is the housing 112 of a pump 110. This may be a delivery pump, which may be designed, for example, as a gear pump, a high-pressure pump, which may be in the form of a piston pump or a vacuum pump. The pump may be part of a fuel supply system of the internal combustion engine or provide a vacuum required for braking force assistance. Although in the present case only a single, the Lagergasse 102 associated pump 110 is shown in the figure, of course, according to the invention, a further, the Lagergasse 104 associated pump can be provided.

Das Gehäuse 112 der Pumpe 110 und das Lagerschild 106 sind stoffschlüssig einteilig ausgestaltet, das Lagerschild 106 bildet zugleich einen Befestigungsflansch der Pumpe 110. Einem anderen Ausführungsbeispiel zufolge sind das Lagerschild 106 und das Gehäuse 112 der Pumpe 110 kraft- und/oder formschlüssig miteinander verbunden, beispielsweise indem das Gehäuse 112 auf das Lagerschild 106 aufgesetzt und von innen mit dem Lagerschild 106 verschraubt wird. Zusätzlich oder alternativ können das Lagerschild 106 und das Gehäuse 112 der Pumpe 110 miteinander verklebt, verschweißt, verlötet oder verpresst werden. Gegebenenfalls ist zwischen Lagerschild 106 und Nebenaggregat 110 eine Dichtung vorzusehen.The housing 112 of the pump 110 and the bearing plate 106 are integrally formed cohesively, the bearing plate 106 also forms a mounting flange of the pump 110. According to another embodiment, the bearing plate 106 and the housing 112 of the pump 110 are non-positively and / or positively connected to each other, for example, by the housing 112 is placed on the bearing plate 106 and bolted from the inside to the bearing plate 106. Additionally or alternatively, the bearing plate 106 and the housing 112 of the pump 110 can be glued together, welded, soldered or pressed. If necessary, provide a seal between bearing plate 106 and accessory 110.

Bei der Herstellung der Brennkraftmaschine wird zunächst der Zylinderkopf 100 ohne Lagerschild 106 und Pumpe 110 weitgehend oder sogar vollständig fertig bearbeitet. Gesondert wird eine Baugruppe Lagerschild/Nebenaggregat 106/110 hergestellt, welche dann mit dem bearbeiteten Zylinderkopf verbunden wird. Eine gemeinsame Bearbeitung von Zylinderkopf 100 und Lagerschild 106 ist nicht mehr erforderlich.In the manufacture of the internal combustion engine, first the cylinder head 100 without end shield 106 and pump 110 is largely or even completely finished. Separate is an assembly bearing plate / accessory 106/110, which is then connected to the machined cylinder head. A joint machining of cylinder head 100 and end plate 106 is no longer necessary.

Indem das Lagerschild 106 zugleich einen Befestigungsflansch der Pumpe 110 bildet, wird ein bei bekannten Konstruktionen immer erforderlicher separater Pumpenflansch überflüssig. Auf diese Weise können Bauraum und Material eingespart werden, die Montage vereinfacht sich. Außerdem wird die Anzahl der Bauteile verringert und die Dichtung zwischen Zylinderkopf 100 und Lagerschild/Pumpe 106/110 muss nicht die Belastungen chemischer, thermischer und/oder mechanischer Art einer im weiteren Bearbeitung des Zylinderkopfes 100 und/oder des Lagerschilds 106 überstehen und kann daher gezielt den Anforderungen an die Dichtheit entsprechend angepasst werden. Die Abdichtung des Zylinderkopfes 100 kann robuster gestaltet werden. By the bearing plate 106 at the same time forms a mounting flange of the pump 110, a always required in known constructions separate pump flange is superfluous. In this way, space and material can be saved, the assembly is simplified. In addition, the number of components is reduced and the seal between the cylinder head 100 and bearing plate / pump 106/110 must not survive the stresses of chemical, thermal and / or mechanical nature of further processing of the cylinder head 100 and / or the bearing plate 106 and therefore can be targeted be adapted to the requirements of the tightness. The sealing of the cylinder head 100 can be made more robust.

Claims (7)

  1. An internal combustion engine comprising a cylinder head (100) with bearing channels (102, 104) for mounting camshafts as well as at least one ancillary unit (110) associated with the cylinder head (100), characterised in that provided on the end face of the cylinder head (100) is a separately constructed end plate (106) which at the same time performs a flange function for the at least one ancillary unit (110).
  2. An internal combustion engine according to claim 1, characterised in that the flange-forming end plate (106) and a casing (112) of the ancillary unit (110) are firmly bonded in one piece.
  3. An internal combustion engine according to either one of the preceding claims, characterised in that the flange-forming end plate (106) and a casing (112) of the ancillary unit (110) are interconnected non-positively and/or positively.
  4. An internal combustion engine according to any one of the preceding claims, characterised in that the at least one ancillary unit (110) is driven by a camshaft.
  5. An internal combustion engine according to any one of the preceding claims, characterised in that the at least one ancillary unit (110) is a pump.
  6. A method for producing an internal combustion engine according to any one of the preceding claims, characterised in that the cylinder head (100) and the end plate (106) are firstly machined separately and then joined together.
  7. A method according to claim 6, characterised in that the separate machining of the end plate (106) comprises the production of an end plate/ancillary unit (106/110) assembly.
EP08006563.4A 2007-05-30 2008-03-31 Combustion engine with cylinder head and auxiliary generator and method for manufacturing such a combustion engine Active EP1998024B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007025148A DE102007025148A1 (en) 2007-05-30 2007-05-30 Internal combustion engine with cylinder head and ancillary unit and method for producing such a combustion engine

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EP1998024A2 EP1998024A2 (en) 2008-12-03
EP1998024A3 EP1998024A3 (en) 2014-05-07
EP1998024B1 true EP1998024B1 (en) 2016-03-23

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007025148A1 (en) * 2007-05-30 2008-12-04 Bayerische Motoren Werke Aktiengesellschaft Internal combustion engine with cylinder head and ancillary unit and method for producing such a combustion engine

Citations (1)

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Publication number Priority date Publication date Assignee Title
DE102007025148A1 (en) * 2007-05-30 2008-12-04 Bayerische Motoren Werke Aktiengesellschaft Internal combustion engine with cylinder head and ancillary unit and method for producing such a combustion engine

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DE102007025148A1 (en) * 2007-05-30 2008-12-04 Bayerische Motoren Werke Aktiengesellschaft Internal combustion engine with cylinder head and ancillary unit and method for producing such a combustion engine

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Publication number Publication date
DE102007025148A1 (en) 2008-12-04
EP1998024A2 (en) 2008-12-03
EP1998024A3 (en) 2014-05-07

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